/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "zonecfg_impl.h" #define _PATH_TMPFILE "/zonecfg.XXXXXX" #define ZONE_CB_RETRY_COUNT 10 #define ZONE_EVENT_PING_SUBCLASS "ping" #define ZONE_EVENT_PING_PUBLISHER "solaris" /* Hard-code the DTD element/attribute/entity names just once, here. */ #define DTD_ELEM_ATTR (const xmlChar *) "attr" #define DTD_ELEM_COMMENT (const xmlChar *) "comment" #define DTD_ELEM_DEVICE (const xmlChar *) "device" #define DTD_ELEM_FS (const xmlChar *) "filesystem" #define DTD_ELEM_FSOPTION (const xmlChar *) "fsoption" #define DTD_ELEM_IPD (const xmlChar *) "inherited-pkg-dir" #define DTD_ELEM_NET (const xmlChar *) "network" #define DTD_ELEM_RCTL (const xmlChar *) "rctl" #define DTD_ELEM_RCTLVALUE (const xmlChar *) "rctl-value" #define DTD_ELEM_ZONE (const xmlChar *) "zone" #define DTD_ELEM_DATASET (const xmlChar *) "dataset" #define DTD_ELEM_TMPPOOL (const xmlChar *) "tmp_pool" #define DTD_ELEM_PSET (const xmlChar *) "pset" #define DTD_ELEM_MCAP (const xmlChar *) "mcap" #define DTD_ELEM_PACKAGE (const xmlChar *) "package" #define DTD_ELEM_PATCH (const xmlChar *) "patch" #define DTD_ELEM_OBSOLETES (const xmlChar *) "obsoletes" #define DTD_ELEM_DEV_PERM (const xmlChar *) "dev-perm" #define DTD_ATTR_ACTION (const xmlChar *) "action" #define DTD_ATTR_ADDRESS (const xmlChar *) "address" #define DTD_ATTR_AUTOBOOT (const xmlChar *) "autoboot" #define DTD_ATTR_IPTYPE (const xmlChar *) "ip-type" #define DTD_ATTR_DEFROUTER (const xmlChar *) "defrouter" #define DTD_ATTR_DIR (const xmlChar *) "directory" #define DTD_ATTR_LIMIT (const xmlChar *) "limit" #define DTD_ATTR_LIMITPRIV (const xmlChar *) "limitpriv" #define DTD_ATTR_BOOTARGS (const xmlChar *) "bootargs" #define DTD_ATTR_SCHED (const xmlChar *) "scheduling-class" #define DTD_ATTR_MATCH (const xmlChar *) "match" #define DTD_ATTR_NAME (const xmlChar *) "name" #define DTD_ATTR_PHYSICAL (const xmlChar *) "physical" #define DTD_ATTR_POOL (const xmlChar *) "pool" #define DTD_ATTR_PRIV (const xmlChar *) "priv" #define DTD_ATTR_RAW (const xmlChar *) "raw" #define DTD_ATTR_SPECIAL (const xmlChar *) "special" #define DTD_ATTR_TYPE (const xmlChar *) "type" #define DTD_ATTR_VALUE (const xmlChar *) "value" #define DTD_ATTR_ZONEPATH (const xmlChar *) "zonepath" #define DTD_ATTR_NCPU_MIN (const xmlChar *) "ncpu_min" #define DTD_ATTR_NCPU_MAX (const xmlChar *) "ncpu_max" #define DTD_ATTR_IMPORTANCE (const xmlChar *) "importance" #define DTD_ATTR_PHYSCAP (const xmlChar *) "physcap" #define DTD_ATTR_VERSION (const xmlChar *) "version" #define DTD_ATTR_ID (const xmlChar *) "id" #define DTD_ATTR_UID (const xmlChar *) "uid" #define DTD_ATTR_GID (const xmlChar *) "gid" #define DTD_ATTR_MODE (const xmlChar *) "mode" #define DTD_ATTR_ACL (const xmlChar *) "acl" #define DTD_ATTR_BRAND (const xmlChar *) "brand" #define DTD_ATTR_HOSTID (const xmlChar *) "hostid" #define DTD_ENTITY_BOOLEAN "boolean" #define DTD_ENTITY_DEVPATH "devpath" #define DTD_ENTITY_DRIVER "driver" #define DTD_ENTITY_DRVMIN "drv_min" #define DTD_ENTITY_FALSE "false" #define DTD_ENTITY_INT "int" #define DTD_ENTITY_STRING "string" #define DTD_ENTITY_TRUE "true" #define DTD_ENTITY_UINT "uint" #define DTD_ENTITY_BOOL_LEN 6 /* "false" */ #define ATTACH_FORCED "SUNWattached.xml" #define TMP_POOL_NAME "SUNWtmp_%s" #define MAX_TMP_POOL_NAME (ZONENAME_MAX + 9) #define RCAP_SERVICE "system/rcap:default" #define POOLD_SERVICE "system/pools/dynamic:default" /* * rctl alias definitions * * This holds the alias, the full rctl name, the default priv value, action * and lower limit. The functions that handle rctl aliases step through * this table, matching on the alias, and using the full values for setting * the rctl entry as well the limit for validation. */ static struct alias { char *shortname; char *realname; char *priv; char *action; uint64_t low_limit; } aliases[] = { {ALIAS_MAXLWPS, "zone.max-lwps", "privileged", "deny", 100}, {ALIAS_MAXSHMMEM, "zone.max-shm-memory", "privileged", "deny", 0}, {ALIAS_MAXSHMIDS, "zone.max-shm-ids", "privileged", "deny", 0}, {ALIAS_MAXMSGIDS, "zone.max-msg-ids", "privileged", "deny", 0}, {ALIAS_MAXSEMIDS, "zone.max-sem-ids", "privileged", "deny", 0}, {ALIAS_MAXLOCKEDMEM, "zone.max-locked-memory", "privileged", "deny", 0}, {ALIAS_MAXSWAP, "zone.max-swap", "privileged", "deny", 0}, {ALIAS_SHARES, "zone.cpu-shares", "privileged", "none", 0}, {ALIAS_CPUCAP, "zone.cpu-cap", "privileged", "deny", 0}, {NULL, NULL, NULL, NULL, 0} }; /* * Structure for applying rctls to a running zone. It allows important * process values to be passed together easily. */ typedef struct pr_info_handle { struct ps_prochandle *pr; pid_t pid; } pr_info_handle_t; struct zone_dochandle { char *zone_dh_rootdir; xmlDocPtr zone_dh_doc; xmlNodePtr zone_dh_cur; xmlNodePtr zone_dh_top; boolean_t zone_dh_newzone; boolean_t zone_dh_snapshot; boolean_t zone_dh_sw_inv; char zone_dh_delete_name[ZONENAME_MAX]; }; struct znotify { void * zn_private; evchan_t *zn_eventchan; int (*zn_callback)(const char *zonename, zoneid_t zid, const char *newstate, const char *oldstate, hrtime_t when, void *p); pthread_mutex_t zn_mutex; pthread_cond_t zn_cond; pthread_mutex_t zn_bigmutex; volatile enum {ZN_UNLOCKED, ZN_LOCKED, ZN_PING_INFLIGHT, ZN_PING_RECEIVED} zn_state; char zn_subscriber_id[MAX_SUBID_LEN]; volatile boolean_t zn_failed; int zn_failure_count; }; /* used to track nested zone-lock operations */ static int zone_lock_cnt = 0; /* used to communicate lock status to children */ #define LOCK_ENV_VAR "_ZONEADM_LOCK_HELD" static char zoneadm_lock_held[] = LOCK_ENV_VAR"=1"; static char zoneadm_lock_not_held[] = LOCK_ENV_VAR"=0"; char *zonecfg_root = ""; /* * For functions which return int, which is most of the functions herein, * the return values should be from the Z_foo set defined in . * In some instances, we take pains mapping some libc errno values to Z_foo * values from this set. */ /* * Set the root (/) path for all zonecfg configuration files. This is a * private interface used by Live Upgrade extensions to access zone * configuration inside mounted alternate boot environments. */ void zonecfg_set_root(const char *rootpath) { if (*zonecfg_root != '\0') free(zonecfg_root); if (rootpath == NULL || rootpath[0] == '\0' || rootpath[1] == '\0' || (zonecfg_root = strdup(rootpath)) == NULL) zonecfg_root = ""; } const char * zonecfg_get_root(void) { return (zonecfg_root); } boolean_t zonecfg_in_alt_root(void) { return (*zonecfg_root != '\0'); } /* * Callers of the _file_path() functions are expected to have the second * parameter be a (char foo[MAXPATHLEN]). */ static boolean_t config_file_path(const char *zonename, char *answer) { return (snprintf(answer, MAXPATHLEN, "%s%s/%s.xml", zonecfg_root, ZONE_CONFIG_ROOT, zonename) < MAXPATHLEN); } static boolean_t snap_file_path(const char *zonename, char *answer) { return (snprintf(answer, MAXPATHLEN, "%s%s/%s.snapshot.xml", zonecfg_root, ZONE_SNAPSHOT_ROOT, zonename) < MAXPATHLEN); } /*ARGSUSED*/ static void zonecfg_error_func(void *ctx, const char *msg, ...) { /* * This function does nothing by design. Its purpose is to prevent * libxml from dumping unwanted messages to stdout/stderr. */ } zone_dochandle_t zonecfg_init_handle(void) { zone_dochandle_t handle = calloc(1, sizeof (struct zone_dochandle)); if (handle == NULL) { errno = Z_NOMEM; return (NULL); } /* generic libxml initialization */ xmlLineNumbersDefault(1); xmlLoadExtDtdDefaultValue |= XML_DETECT_IDS; xmlDoValidityCheckingDefaultValue = 1; (void) xmlKeepBlanksDefault(0); xmlGetWarningsDefaultValue = 0; xmlSetGenericErrorFunc(NULL, zonecfg_error_func); return (handle); } int zonecfg_check_handle(zone_dochandle_t handle) { if (handle == NULL || handle->zone_dh_doc == NULL) return (Z_BAD_HANDLE); return (Z_OK); } void zonecfg_fini_handle(zone_dochandle_t handle) { if (zonecfg_check_handle(handle) == Z_OK) xmlFreeDoc(handle->zone_dh_doc); if (handle != NULL) free(handle); } static int zonecfg_destroy_impl(char *filename) { if (unlink(filename) == -1) { if (errno == EACCES) return (Z_ACCES); if (errno == ENOENT) return (Z_NO_ZONE); return (Z_MISC_FS); } return (Z_OK); } int zonecfg_destroy(const char *zonename, boolean_t force) { char path[MAXPATHLEN]; struct zoneent ze; int err, state_err; zone_state_t state; if (!config_file_path(zonename, path)) return (Z_MISC_FS); state_err = zone_get_state((char *)zonename, &state); err = access(path, W_OK); /* * If there is no file, and no index entry, reliably indicate that no * such zone exists. */ if ((state_err == Z_NO_ZONE) && (err == -1) && (errno == ENOENT)) return (Z_NO_ZONE); /* * Handle any other filesystem related errors (except if the XML * file is missing, which we treat silently), unless we're forcing, * in which case we plow on. */ if (err == -1 && errno != ENOENT) { if (errno == EACCES) return (Z_ACCES); else if (!force) return (Z_MISC_FS); } if (state > ZONE_STATE_INSTALLED) return (Z_BAD_ZONE_STATE); if (!force && state > ZONE_STATE_CONFIGURED) return (Z_BAD_ZONE_STATE); /* * Index deletion succeeds even if the entry doesn't exist. So this * will fail only if we've had some more severe problem. */ bzero(&ze, sizeof (ze)); (void) strlcpy(ze.zone_name, zonename, sizeof (ze.zone_name)); if ((err = putzoneent(&ze, PZE_REMOVE)) != Z_OK) if (!force) return (err); err = zonecfg_destroy_impl(path); /* * Treat failure to find the XML file silently, since, well, it's * gone, and with the index file cleaned up, we're done. */ if (err == Z_OK || err == Z_NO_ZONE) return (Z_OK); return (err); } int zonecfg_destroy_snapshot(const char *zonename) { char path[MAXPATHLEN]; if (!snap_file_path(zonename, path)) return (Z_MISC_FS); return (zonecfg_destroy_impl(path)); } static int getroot(zone_dochandle_t handle, xmlNodePtr *root) { if (zonecfg_check_handle(handle) == Z_BAD_HANDLE) return (Z_BAD_HANDLE); *root = xmlDocGetRootElement(handle->zone_dh_doc); if (*root == NULL) return (Z_EMPTY_DOCUMENT); if (xmlStrcmp((*root)->name, DTD_ELEM_ZONE)) return (Z_WRONG_DOC_TYPE); return (Z_OK); } static int operation_prep(zone_dochandle_t handle) { xmlNodePtr root; int err; if ((err = getroot(handle, &root)) != 0) return (err); handle->zone_dh_cur = root; handle->zone_dh_top = root; return (Z_OK); } static int fetchprop(xmlNodePtr cur, const xmlChar *propname, char *dst, size_t dstsize) { xmlChar *property; size_t srcsize; if ((property = xmlGetProp(cur, propname)) == NULL) return (Z_BAD_PROPERTY); srcsize = strlcpy(dst, (char *)property, dstsize); xmlFree(property); if (srcsize >= dstsize) return (Z_TOO_BIG); return (Z_OK); } static int fetch_alloc_prop(xmlNodePtr cur, const xmlChar *propname, char **dst) { xmlChar *property; if ((property = xmlGetProp(cur, propname)) == NULL) return (Z_BAD_PROPERTY); if ((*dst = strdup((char *)property)) == NULL) { xmlFree(property); return (Z_NOMEM); } xmlFree(property); return (Z_OK); } static int getrootattr(zone_dochandle_t handle, const xmlChar *propname, char *propval, size_t propsize) { xmlNodePtr root; int err; if ((err = getroot(handle, &root)) != 0) return (err); return (fetchprop(root, propname, propval, propsize)); } static int get_alloc_rootattr(zone_dochandle_t handle, const xmlChar *propname, char **propval) { xmlNodePtr root; int err; if ((err = getroot(handle, &root)) != 0) return (err); return (fetch_alloc_prop(root, propname, propval)); } static int setrootattr(zone_dochandle_t handle, const xmlChar *propname, const char *propval) { int err; xmlNodePtr root; if ((err = getroot(handle, &root)) != Z_OK) return (err); /* * If we get a null propval remove the property (ignore return since it * may not be set to begin with). */ if (propval == NULL) { (void) xmlUnsetProp(root, propname); } else { if (xmlSetProp(root, propname, (const xmlChar *) propval) == NULL) return (Z_INVAL); } return (Z_OK); } static void addcomment(zone_dochandle_t handle, const char *comment) { xmlNodePtr node; node = xmlNewComment((xmlChar *) comment); if (node != NULL) (void) xmlAddPrevSibling(handle->zone_dh_top, node); } static void stripcomments(zone_dochandle_t handle) { xmlDocPtr top; xmlNodePtr child, next; top = handle->zone_dh_doc; for (child = top->xmlChildrenNode; child != NULL; child = next) { next = child->next; if (child->name == NULL) continue; if (xmlStrcmp(child->name, DTD_ELEM_COMMENT) == 0) { next = child->next; xmlUnlinkNode(child); xmlFreeNode(child); } } } static void strip_sw_inv(zone_dochandle_t handle) { xmlNodePtr root, child, next; root = xmlDocGetRootElement(handle->zone_dh_doc); for (child = root->xmlChildrenNode; child != NULL; child = next) { next = child->next; if (child->name == NULL) continue; if (xmlStrcmp(child->name, DTD_ELEM_PACKAGE) == 0 || xmlStrcmp(child->name, DTD_ELEM_PATCH) == 0) { next = child->next; xmlUnlinkNode(child); xmlFreeNode(child); } } } static int zonecfg_get_handle_impl(const char *zonename, const char *filename, zone_dochandle_t handle) { xmlValidCtxtPtr cvp; struct stat statbuf; int valid; if (zonename == NULL) return (Z_NO_ZONE); if ((handle->zone_dh_doc = xmlParseFile(filename)) == NULL) { /* distinguish file not found vs. found but not parsed */ if (stat(filename, &statbuf) == 0) return (Z_INVALID_DOCUMENT); return (Z_NO_ZONE); } if ((cvp = xmlNewValidCtxt()) == NULL) return (Z_NOMEM); cvp->error = zonecfg_error_func; cvp->warning = zonecfg_error_func; valid = xmlValidateDocument(cvp, handle->zone_dh_doc); xmlFreeValidCtxt(cvp); if (valid == 0) return (Z_INVALID_DOCUMENT); /* delete any comments such as inherited Sun copyright / ident str */ stripcomments(handle); return (Z_OK); } int zonecfg_get_handle(const char *zonename, zone_dochandle_t handle) { char path[MAXPATHLEN]; if (!config_file_path(zonename, path)) return (Z_MISC_FS); handle->zone_dh_newzone = B_FALSE; return (zonecfg_get_handle_impl(zonename, path, handle)); } int zonecfg_get_attach_handle(const char *path, const char *fname, const char *zonename, boolean_t preserve_sw, zone_dochandle_t handle) { char migpath[MAXPATHLEN]; int err; struct stat buf; if (snprintf(migpath, sizeof (migpath), "%s/root", path) >= sizeof (migpath)) return (Z_NOMEM); if (stat(migpath, &buf) == -1 || !S_ISDIR(buf.st_mode)) return (Z_NO_ZONE); if (snprintf(migpath, sizeof (migpath), "%s/%s", path, fname) >= sizeof (migpath)) return (Z_NOMEM); if ((err = zonecfg_get_handle_impl(zonename, migpath, handle)) != Z_OK) return (err); if (!preserve_sw) strip_sw_inv(handle); handle->zone_dh_newzone = B_TRUE; if ((err = setrootattr(handle, DTD_ATTR_ZONEPATH, path)) != Z_OK) return (err); return (setrootattr(handle, DTD_ATTR_NAME, zonename)); } int zonecfg_get_snapshot_handle(const char *zonename, zone_dochandle_t handle) { char path[MAXPATHLEN]; if (!snap_file_path(zonename, path)) return (Z_MISC_FS); handle->zone_dh_newzone = B_FALSE; return (zonecfg_get_handle_impl(zonename, path, handle)); } int zonecfg_get_template_handle(const char *template, const char *zonename, zone_dochandle_t handle) { char path[MAXPATHLEN]; int err; if (!config_file_path(template, path)) return (Z_MISC_FS); if ((err = zonecfg_get_handle_impl(template, path, handle)) != Z_OK) return (err); handle->zone_dh_newzone = B_TRUE; return (setrootattr(handle, DTD_ATTR_NAME, zonename)); } int zonecfg_get_xml_handle(const char *path, zone_dochandle_t handle) { struct stat buf; int err; if (stat(path, &buf) == -1) return (Z_MISC_FS); if ((err = zonecfg_get_handle_impl("xml", path, handle)) != Z_OK) return (err); handle->zone_dh_newzone = B_TRUE; return (Z_OK); } /* * Initialize two handles from the manifest read on fd. The rem_handle * is initialized from the input file, including the sw inventory. The * local_handle is initialized with the same zone configuration but with * no sw inventory. */ int zonecfg_attach_manifest(int fd, zone_dochandle_t local_handle, zone_dochandle_t rem_handle) { xmlValidCtxtPtr cvp; int valid; /* load the manifest into the handle for the remote system */ if ((rem_handle->zone_dh_doc = xmlReadFd(fd, NULL, NULL, 0)) == NULL) { return (Z_INVALID_DOCUMENT); } if ((cvp = xmlNewValidCtxt()) == NULL) return (Z_NOMEM); cvp->error = zonecfg_error_func; cvp->warning = zonecfg_error_func; valid = xmlValidateDocument(cvp, rem_handle->zone_dh_doc); xmlFreeValidCtxt(cvp); if (valid == 0) return (Z_INVALID_DOCUMENT); /* delete any comments such as inherited Sun copyright / ident str */ stripcomments(rem_handle); rem_handle->zone_dh_newzone = B_TRUE; rem_handle->zone_dh_sw_inv = B_TRUE; /* * Now use the remote system handle to generate a local system handle * with an identical zones configuration but no sw inventory. */ if ((local_handle->zone_dh_doc = xmlCopyDoc(rem_handle->zone_dh_doc, 1)) == NULL) { return (Z_INVALID_DOCUMENT); } /* * We need to re-run xmlValidateDocument on local_handle to properly * update the in-core representation of the configuration. */ if ((cvp = xmlNewValidCtxt()) == NULL) return (Z_NOMEM); cvp->error = zonecfg_error_func; cvp->warning = zonecfg_error_func; valid = xmlValidateDocument(cvp, local_handle->zone_dh_doc); xmlFreeValidCtxt(cvp); if (valid == 0) return (Z_INVALID_DOCUMENT); strip_sw_inv(local_handle); local_handle->zone_dh_newzone = B_TRUE; local_handle->zone_dh_sw_inv = B_FALSE; return (Z_OK); } static boolean_t is_renaming(zone_dochandle_t handle) { if (handle->zone_dh_newzone) return (B_FALSE); if (strlen(handle->zone_dh_delete_name) > 0) return (B_TRUE); return (B_FALSE); } static boolean_t is_new(zone_dochandle_t handle) { return (handle->zone_dh_newzone || handle->zone_dh_snapshot); } static boolean_t is_snapshot(zone_dochandle_t handle) { return (handle->zone_dh_snapshot); } /* * It would be great to be able to use libc's ctype(3c) macros, but we * can't, as they are locale sensitive, and it would break our limited thread * safety if this routine had to change the app locale on the fly. */ int zonecfg_validate_zonename(const char *zone) { int i; if (strcmp(zone, GLOBAL_ZONENAME) == 0) return (Z_BOGUS_ZONE_NAME); if (strlen(zone) >= ZONENAME_MAX) return (Z_BOGUS_ZONE_NAME); if (!((zone[0] >= 'a' && zone[0] <= 'z') || (zone[0] >= 'A' && zone[0] <= 'Z') || (zone[0] >= '0' && zone[0] <= '9'))) return (Z_BOGUS_ZONE_NAME); for (i = 1; zone[i] != '\0'; i++) { if (!((zone[i] >= 'a' && zone[i] <= 'z') || (zone[i] >= 'A' && zone[i] <= 'Z') || (zone[i] >= '0' && zone[i] <= '9') || (zone[i] == '-') || (zone[i] == '_') || (zone[i] == '.'))) return (Z_BOGUS_ZONE_NAME); } return (Z_OK); } /* * Changing the zone name requires us to track both the old and new * name of the zone until commit time. */ int zonecfg_get_name(zone_dochandle_t handle, char *name, size_t namesize) { return (getrootattr(handle, DTD_ATTR_NAME, name, namesize)); } int zonecfg_set_name(zone_dochandle_t handle, char *name) { zone_state_t state; char curname[ZONENAME_MAX], old_delname[ZONENAME_MAX]; int err; if ((err = getrootattr(handle, DTD_ATTR_NAME, curname, sizeof (curname))) != Z_OK) return (err); if (strcmp(name, curname) == 0) return (Z_OK); /* * Switching zone names to one beginning with SUNW is not permitted. */ if (strncmp(name, "SUNW", 4) == 0) return (Z_BOGUS_ZONE_NAME); if ((err = zonecfg_validate_zonename(name)) != Z_OK) return (err); /* * Setting the name back to the original name (effectively a revert of * the name) is fine. But if we carry on, we'll falsely identify the * name as "in use," so special case here. */ if (strcmp(name, handle->zone_dh_delete_name) == 0) { err = setrootattr(handle, DTD_ATTR_NAME, name); handle->zone_dh_delete_name[0] = '\0'; return (err); } /* Check to see if new name chosen is already in use */ if (zone_get_state(name, &state) != Z_NO_ZONE) return (Z_NAME_IN_USE); /* * If this isn't already "new" or in a renaming transition, then * we're initiating a rename here; so stash the "delete name" * (i.e. the name of the zone we'll be removing) for the rename. */ (void) strlcpy(old_delname, handle->zone_dh_delete_name, sizeof (old_delname)); if (!is_new(handle) && !is_renaming(handle)) { /* * Name change is allowed only when the zone we're altering * is not ready or running. */ err = zone_get_state(curname, &state); if (err == Z_OK) { if (state > ZONE_STATE_INSTALLED) return (Z_BAD_ZONE_STATE); } else if (err != Z_NO_ZONE) { return (err); } (void) strlcpy(handle->zone_dh_delete_name, curname, sizeof (handle->zone_dh_delete_name)); assert(is_renaming(handle)); } else if (is_renaming(handle)) { err = zone_get_state(handle->zone_dh_delete_name, &state); if (err == Z_OK) { if (state > ZONE_STATE_INSTALLED) return (Z_BAD_ZONE_STATE); } else if (err != Z_NO_ZONE) { return (err); } } if ((err = setrootattr(handle, DTD_ATTR_NAME, name)) != Z_OK) { /* * Restore the deletename to whatever it was at the * top of the routine, since we've had a failure. */ (void) strlcpy(handle->zone_dh_delete_name, old_delname, sizeof (handle->zone_dh_delete_name)); return (err); } return (Z_OK); } int zonecfg_get_zonepath(zone_dochandle_t handle, char *path, size_t pathsize) { size_t len; if ((len = strlcpy(path, zonecfg_root, pathsize)) >= pathsize) return (Z_TOO_BIG); return (getrootattr(handle, DTD_ATTR_ZONEPATH, path + len, pathsize - len)); } int zonecfg_set_zonepath(zone_dochandle_t handle, char *zonepath) { size_t len; /* * The user deals in absolute paths in the running global zone, but the * internal configuration files deal with boot environment relative * paths. Strip out the alternate root when specified. */ len = strlen(zonecfg_root); if (strncmp(zonepath, zonecfg_root, len) != 0 || zonepath[len] != '/') return (Z_BAD_PROPERTY); zonepath += len; return (setrootattr(handle, DTD_ATTR_ZONEPATH, zonepath)); } static int i_zonecfg_get_brand(zone_dochandle_t handle, char *brand, size_t brandsize, boolean_t default_query) { int ret, sz; ret = getrootattr(handle, DTD_ATTR_BRAND, brand, brandsize); /* * If the lookup failed, or succeeded in finding a non-null brand * string then return. */ if (ret != Z_OK || brand[0] != '\0') return (ret); if (!default_query) { /* If the zone has no brand, it is the default brand. */ return (zonecfg_default_brand(brand, brandsize)); } /* if SUNWdefault didn't specify a brand, fallback to "native" */ sz = strlcpy(brand, NATIVE_BRAND_NAME, brandsize); if (sz >= brandsize) return (Z_TOO_BIG); return (Z_OK); } int zonecfg_get_brand(zone_dochandle_t handle, char *brand, size_t brandsize) { return (i_zonecfg_get_brand(handle, brand, brandsize, B_FALSE)); } int zonecfg_set_brand(zone_dochandle_t handle, char *brand) { return (setrootattr(handle, DTD_ATTR_BRAND, brand)); } int zonecfg_get_autoboot(zone_dochandle_t handle, boolean_t *autoboot) { char autobootstr[DTD_ENTITY_BOOL_LEN]; int ret; if ((ret = getrootattr(handle, DTD_ATTR_AUTOBOOT, autobootstr, sizeof (autobootstr))) != Z_OK) return (ret); if (strcmp(autobootstr, DTD_ENTITY_TRUE) == 0) *autoboot = B_TRUE; else if (strcmp(autobootstr, DTD_ENTITY_FALSE) == 0) *autoboot = B_FALSE; else ret = Z_BAD_PROPERTY; return (ret); } int zonecfg_set_autoboot(zone_dochandle_t handle, boolean_t autoboot) { return (setrootattr(handle, DTD_ATTR_AUTOBOOT, autoboot ? DTD_ENTITY_TRUE : DTD_ENTITY_FALSE)); } int zonecfg_get_pool(zone_dochandle_t handle, char *pool, size_t poolsize) { return (getrootattr(handle, DTD_ATTR_POOL, pool, poolsize)); } int zonecfg_set_pool(zone_dochandle_t handle, char *pool) { return (setrootattr(handle, DTD_ATTR_POOL, pool)); } int zonecfg_get_limitpriv(zone_dochandle_t handle, char **limitpriv) { return (get_alloc_rootattr(handle, DTD_ATTR_LIMITPRIV, limitpriv)); } int zonecfg_set_limitpriv(zone_dochandle_t handle, char *limitpriv) { return (setrootattr(handle, DTD_ATTR_LIMITPRIV, limitpriv)); } int zonecfg_get_bootargs(zone_dochandle_t handle, char *bargs, size_t bargssize) { return (getrootattr(handle, DTD_ATTR_BOOTARGS, bargs, bargssize)); } int zonecfg_set_bootargs(zone_dochandle_t handle, char *bargs) { return (setrootattr(handle, DTD_ATTR_BOOTARGS, bargs)); } int zonecfg_get_sched_class(zone_dochandle_t handle, char *sched, size_t schedsize) { return (getrootattr(handle, DTD_ATTR_SCHED, sched, schedsize)); } int zonecfg_set_sched(zone_dochandle_t handle, char *sched) { return (setrootattr(handle, DTD_ATTR_SCHED, sched)); } /* * /etc/zones/index caches a vital piece of information which is also * in the .xml file: the path to the zone. This is for performance, * since we need to walk all zonepath's in order to be able to detect conflicts * (see crosscheck_zonepaths() in the zoneadm command). * * An additional complexity is that when doing a rename, we'd like the entire * index update operation (rename, and potential state changes) to be atomic. * In general, the operation of this function should succeed or fail as * a unit. */ int zonecfg_refresh_index_file(zone_dochandle_t handle) { char name[ZONENAME_MAX], zonepath[MAXPATHLEN]; struct zoneent ze; int err; int opcode; char *zn; bzero(&ze, sizeof (ze)); ze.zone_state = -1; /* Preserve existing state in index */ if ((err = zonecfg_get_name(handle, name, sizeof (name))) != Z_OK) return (err); (void) strlcpy(ze.zone_name, name, sizeof (ze.zone_name)); if ((err = zonecfg_get_zonepath(handle, zonepath, sizeof (zonepath))) != Z_OK) return (err); (void) strlcpy(ze.zone_path, zonepath + strlen(zonecfg_root), sizeof (ze.zone_path)); if (is_renaming(handle)) { opcode = PZE_MODIFY; (void) strlcpy(ze.zone_name, handle->zone_dh_delete_name, sizeof (ze.zone_name)); (void) strlcpy(ze.zone_newname, name, sizeof (ze.zone_newname)); } else if (is_new(handle)) { FILE *cookie; /* * Be tolerant of the zone already existing in the index file, * since we might be forcibly overwriting an existing * configuration with a new one (for example 'create -F' * in zonecfg). */ opcode = PZE_ADD; cookie = setzoneent(); while ((zn = getzoneent(cookie)) != NULL) { if (strcmp(zn, name) == 0) { opcode = PZE_MODIFY; free(zn); break; } free(zn); } endzoneent(cookie); ze.zone_state = ZONE_STATE_CONFIGURED; } else { opcode = PZE_MODIFY; } if ((err = putzoneent(&ze, opcode)) != Z_OK) return (err); return (Z_OK); } /* * The goal of this routine is to cause the index file update and the * document save to happen as an atomic operation. We do the document * first, saving a backup copy using a hard link; if that succeeds, we go * on to the index. If that fails, we roll the document back into place. * * Strategy: * * New zone 'foo' configuration: * Create tmpfile (zonecfg.xxxxxx) * Write XML to tmpfile * Rename tmpfile to xmlfile (zonecfg.xxxxxx -> foo.xml) * Add entry to index file * If it fails, delete foo.xml, leaving nothing behind. * * Save existing zone 'foo': * Make backup of foo.xml -> .backup * Create tmpfile (zonecfg.xxxxxx) * Write XML to tmpfile * Rename tmpfile to xmlfile (zonecfg.xxxxxx -> foo.xml) * Modify index file as needed * If it fails, recover from .backup -> foo.xml * * Rename 'foo' to 'bar': * Create tmpfile (zonecfg.xxxxxx) * Write XML to tmpfile * Rename tmpfile to xmlfile (zonecfg.xxxxxx -> bar.xml) * Add entry for 'bar' to index file, Remove entry for 'foo' (refresh) * If it fails, delete bar.xml; foo.xml is left behind. */ static int zonecfg_save_impl(zone_dochandle_t handle, char *filename) { char tmpfile[MAXPATHLEN]; char bakdir[MAXPATHLEN], bakbase[MAXPATHLEN], bakfile[MAXPATHLEN]; int tmpfd, err, valid; xmlValidCtxt cvp = { NULL }; boolean_t backup; (void) strlcpy(tmpfile, filename, sizeof (tmpfile)); (void) dirname(tmpfile); (void) strlcat(tmpfile, _PATH_TMPFILE, sizeof (tmpfile)); tmpfd = mkstemp(tmpfile); if (tmpfd == -1) { (void) unlink(tmpfile); return (Z_TEMP_FILE); } (void) close(tmpfd); cvp.error = zonecfg_error_func; cvp.warning = zonecfg_error_func; /* * We do a final validation of the document. Since the library has * malfunctioned if it fails to validate, we follow-up with an * assert() that the doc is valid. */ valid = xmlValidateDocument(&cvp, handle->zone_dh_doc); assert(valid != 0); if (xmlSaveFormatFile(tmpfile, handle->zone_dh_doc, 1) <= 0) goto err; (void) chmod(tmpfile, 0644); /* * In the event we are doing a standard save, hard link a copy of the * original file in .backup..filename so we can restore it if * something goes wrong. */ if (!is_new(handle) && !is_renaming(handle)) { backup = B_TRUE; (void) strlcpy(bakdir, filename, sizeof (bakdir)); (void) strlcpy(bakbase, filename, sizeof (bakbase)); (void) snprintf(bakfile, sizeof (bakfile), "%s/.backup.%d.%s", dirname(bakdir), getpid(), basename(bakbase)); if (link(filename, bakfile) == -1) { err = errno; (void) unlink(tmpfile); if (errno == EACCES) return (Z_ACCES); return (Z_MISC_FS); } } /* * Move the new document over top of the old. * i.e.: zonecfg.XXXXXX -> myzone.xml */ if (rename(tmpfile, filename) == -1) { err = errno; (void) unlink(tmpfile); if (backup) (void) unlink(bakfile); if (err == EACCES) return (Z_ACCES); return (Z_MISC_FS); } /* * If this is a snapshot, we're done-- don't add an index entry. */ if (is_snapshot(handle)) return (Z_OK); /* now update the index file to reflect whatever we just did */ if ((err = zonecfg_refresh_index_file(handle)) != Z_OK) { if (backup) { /* * Try to restore from our backup. */ (void) unlink(filename); (void) rename(bakfile, filename); } else { /* * Either the zone is new, in which case we can delete * new.xml, or we're doing a rename, so ditto. */ assert(is_new(handle) || is_renaming(handle)); (void) unlink(filename); } return (Z_UPDATING_INDEX); } if (backup) (void) unlink(bakfile); return (Z_OK); err: (void) unlink(tmpfile); return (Z_SAVING_FILE); } int zonecfg_save(zone_dochandle_t handle) { char zname[ZONENAME_MAX], path[MAXPATHLEN]; char delpath[MAXPATHLEN]; int err = Z_SAVING_FILE; if (zonecfg_check_handle(handle) != Z_OK) return (Z_BAD_HANDLE); /* * We don't support saving snapshots or a tree containing a sw * inventory at this time. */ if (handle->zone_dh_snapshot || handle->zone_dh_sw_inv) return (Z_INVAL); if ((err = zonecfg_get_name(handle, zname, sizeof (zname))) != Z_OK) return (err); if (!config_file_path(zname, path)) return (Z_MISC_FS); addcomment(handle, "\n DO NOT EDIT THIS " "FILE. Use zonecfg(1M) instead.\n"); err = zonecfg_save_impl(handle, path); stripcomments(handle); if (err != Z_OK) return (err); handle->zone_dh_newzone = B_FALSE; if (is_renaming(handle)) { if (config_file_path(handle->zone_dh_delete_name, delpath)) (void) unlink(delpath); handle->zone_dh_delete_name[0] = '\0'; } return (Z_OK); } int zonecfg_verify_save(zone_dochandle_t handle, char *filename) { int valid; xmlValidCtxt cvp = { NULL }; if (zonecfg_check_handle(handle) != Z_OK) return (Z_BAD_HANDLE); cvp.error = zonecfg_error_func; cvp.warning = zonecfg_error_func; /* * We do a final validation of the document. Since the library has * malfunctioned if it fails to validate, we follow-up with an * assert() that the doc is valid. */ valid = xmlValidateDocument(&cvp, handle->zone_dh_doc); assert(valid != 0); if (xmlSaveFormatFile(filename, handle->zone_dh_doc, 1) <= 0) return (Z_SAVING_FILE); return (Z_OK); } int zonecfg_detach_save(zone_dochandle_t handle, uint_t flags) { char zname[ZONENAME_MAX]; char path[MAXPATHLEN]; char migpath[MAXPATHLEN]; xmlValidCtxt cvp = { NULL }; int err = Z_SAVING_FILE; int valid; if (zonecfg_check_handle(handle) != Z_OK) return (Z_BAD_HANDLE); if (flags & ZONE_DRY_RUN) { (void) strlcpy(migpath, "-", sizeof (migpath)); } else { if ((err = zonecfg_get_name(handle, zname, sizeof (zname))) != Z_OK) return (err); if ((err = zone_get_zonepath(zname, path, sizeof (path))) != Z_OK) return (err); if (snprintf(migpath, sizeof (migpath), "%s/%s", path, ZONE_DETACHED) >= sizeof (migpath)) return (Z_NOMEM); } if ((err = operation_prep(handle)) != Z_OK) return (err); addcomment(handle, "\n DO NOT EDIT THIS FILE. " "Use zonecfg(1M) and zoneadm(1M) attach.\n"); cvp.error = zonecfg_error_func; cvp.warning = zonecfg_error_func; /* * We do a final validation of the document. Since the library has * malfunctioned if it fails to validate, we follow-up with an * assert() that the doc is valid. */ valid = xmlValidateDocument(&cvp, handle->zone_dh_doc); assert(valid != 0); if (xmlSaveFormatFile(migpath, handle->zone_dh_doc, 1) <= 0) return (Z_SAVING_FILE); if (!(flags & ZONE_DRY_RUN)) (void) chmod(migpath, 0644); stripcomments(handle); handle->zone_dh_newzone = B_FALSE; return (Z_OK); } boolean_t zonecfg_detached(const char *path) { char migpath[MAXPATHLEN]; struct stat buf; if (snprintf(migpath, sizeof (migpath), "%s/%s", path, ZONE_DETACHED) >= sizeof (migpath)) return (B_FALSE); if (stat(migpath, &buf) != -1) return (B_TRUE); return (B_FALSE); } void zonecfg_rm_detached(zone_dochandle_t handle, boolean_t forced) { char zname[ZONENAME_MAX]; char path[MAXPATHLEN]; char detached[MAXPATHLEN]; char attached[MAXPATHLEN]; if (zonecfg_check_handle(handle) != Z_OK) return; if (zonecfg_get_name(handle, zname, sizeof (zname)) != Z_OK) return; if (zone_get_zonepath(zname, path, sizeof (path)) != Z_OK) return; (void) snprintf(detached, sizeof (detached), "%s/%s", path, ZONE_DETACHED); (void) snprintf(attached, sizeof (attached), "%s/%s", path, ATTACH_FORCED); if (forced) { (void) rename(detached, attached); } else { (void) unlink(attached); (void) unlink(detached); } } /* * Special case: if access(2) fails with ENOENT, then try again using * ZONE_CONFIG_ROOT instead of config_file_path(zonename). This is how we * work around the case of a config file which has not been created yet: * the user will need access to the directory so use that as a heuristic. */ int zonecfg_access(const char *zonename, int amode) { char path[MAXPATHLEN]; if (!config_file_path(zonename, path)) return (Z_INVAL); if (access(path, amode) == 0) return (Z_OK); if (errno == ENOENT) { if (snprintf(path, sizeof (path), "%s%s", zonecfg_root, ZONE_CONFIG_ROOT) >= sizeof (path)) return (Z_INVAL); if (access(path, amode) == 0) return (Z_OK); } if (errno == EACCES) return (Z_ACCES); if (errno == EINVAL) return (Z_INVAL); return (Z_MISC_FS); } int zonecfg_create_snapshot(const char *zonename) { zone_dochandle_t handle; char path[MAXPATHLEN], zonepath[MAXPATHLEN], rpath[MAXPATHLEN]; int error = Z_OK, res; if ((handle = zonecfg_init_handle()) == NULL) { return (Z_NOMEM); } handle->zone_dh_newzone = B_TRUE; handle->zone_dh_snapshot = B_TRUE; if ((error = zonecfg_get_handle(zonename, handle)) != Z_OK) goto out; if ((error = operation_prep(handle)) != Z_OK) goto out; error = zonecfg_get_zonepath(handle, zonepath, sizeof (zonepath)); if (error != Z_OK) goto out; if ((res = resolvepath(zonepath, rpath, sizeof (rpath))) == -1) { error = Z_RESOLVED_PATH; goto out; } /* * If the resolved path is not the same as the original path, then * save the resolved path in the snapshot, thus preventing any * potential problems down the line when zoneadmd goes to unmount * file systems and depends on initial string matches with resolved * paths. */ rpath[res] = '\0'; if (strcmp(zonepath, rpath) != 0) { if ((error = zonecfg_set_zonepath(handle, rpath)) != Z_OK) goto out; } if (snprintf(path, sizeof (path), "%s%s", zonecfg_root, ZONE_SNAPSHOT_ROOT) >= sizeof (path)) { error = Z_MISC_FS; goto out; } if ((mkdir(path, S_IRWXU) == -1) && (errno != EEXIST)) { error = Z_MISC_FS; goto out; } if (!snap_file_path(zonename, path)) { error = Z_MISC_FS; goto out; } addcomment(handle, "\n DO NOT EDIT THIS FILE. " "It is a snapshot of running zone state.\n"); error = zonecfg_save_impl(handle, path); stripcomments(handle); out: zonecfg_fini_handle(handle); return (error); } int zonecfg_get_iptype(zone_dochandle_t handle, zone_iptype_t *iptypep) { char property[10]; /* 10 is big enough for "shared"/"exclusive" */ int err; err = getrootattr(handle, DTD_ATTR_IPTYPE, property, sizeof (property)); if (err == Z_BAD_PROPERTY) { /* Return default value */ *iptypep = ZS_SHARED; return (Z_OK); } else if (err != Z_OK) { return (err); } if (strlen(property) == 0 || strcmp(property, "shared") == 0) *iptypep = ZS_SHARED; else if (strcmp(property, "exclusive") == 0) *iptypep = ZS_EXCLUSIVE; else return (Z_INVAL); return (Z_OK); } int zonecfg_set_iptype(zone_dochandle_t handle, zone_iptype_t iptype) { xmlNodePtr cur; if (handle == NULL) return (Z_INVAL); cur = xmlDocGetRootElement(handle->zone_dh_doc); if (cur == NULL) { return (Z_EMPTY_DOCUMENT); } if (xmlStrcmp(cur->name, DTD_ELEM_ZONE) != 0) { return (Z_WRONG_DOC_TYPE); } switch (iptype) { case ZS_SHARED: /* * Since "shared" is the default, we don't write it to the * configuration file, so that it's easier to migrate those * zones elsewhere, eg., to systems which are not IP-Instances * aware. * xmlUnsetProp only fails when the attribute doesn't exist, * which we don't care. */ (void) xmlUnsetProp(cur, DTD_ATTR_IPTYPE); break; case ZS_EXCLUSIVE: if (xmlSetProp(cur, DTD_ATTR_IPTYPE, (const xmlChar *) "exclusive") == NULL) return (Z_INVAL); break; } return (Z_OK); } static int newprop(xmlNodePtr node, const xmlChar *attrname, char *src) { xmlAttrPtr newattr; newattr = xmlNewProp(node, attrname, (xmlChar *)src); if (newattr == NULL) { xmlUnlinkNode(node); xmlFreeNode(node); return (Z_BAD_PROPERTY); } return (Z_OK); } static int zonecfg_add_filesystem_core(zone_dochandle_t handle, struct zone_fstab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur, options_node; zone_fsopt_t *ptr; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_FS, NULL); if ((err = newprop(newnode, DTD_ATTR_SPECIAL, tabptr->zone_fs_special)) != Z_OK) return (err); if (tabptr->zone_fs_raw[0] != '\0' && (err = newprop(newnode, DTD_ATTR_RAW, tabptr->zone_fs_raw)) != Z_OK) return (err); if ((err = newprop(newnode, DTD_ATTR_DIR, tabptr->zone_fs_dir)) != Z_OK) return (err); if ((err = newprop(newnode, DTD_ATTR_TYPE, tabptr->zone_fs_type)) != Z_OK) return (err); if (tabptr->zone_fs_options != NULL) { for (ptr = tabptr->zone_fs_options; ptr != NULL; ptr = ptr->zone_fsopt_next) { options_node = xmlNewTextChild(newnode, NULL, DTD_ELEM_FSOPTION, NULL); if ((err = newprop(options_node, DTD_ATTR_NAME, ptr->zone_fsopt_opt)) != Z_OK) return (err); } } return (Z_OK); } int zonecfg_add_filesystem(zone_dochandle_t handle, struct zone_fstab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_add_filesystem_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } static int zonecfg_add_ipd_core(zone_dochandle_t handle, struct zone_fstab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_IPD, NULL); if ((err = newprop(newnode, DTD_ATTR_DIR, tabptr->zone_fs_dir)) != Z_OK) return (err); return (Z_OK); } int zonecfg_add_ipd(zone_dochandle_t handle, struct zone_fstab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_add_ipd_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_add_fs_option(struct zone_fstab *tabptr, char *option) { zone_fsopt_t *last, *old, *new; last = tabptr->zone_fs_options; for (old = last; old != NULL; old = old->zone_fsopt_next) last = old; /* walk to the end of the list */ new = (zone_fsopt_t *)malloc(sizeof (zone_fsopt_t)); if (new == NULL) return (Z_NOMEM); (void) strlcpy(new->zone_fsopt_opt, option, sizeof (new->zone_fsopt_opt)); new->zone_fsopt_next = NULL; if (last == NULL) tabptr->zone_fs_options = new; else last->zone_fsopt_next = new; return (Z_OK); } int zonecfg_remove_fs_option(struct zone_fstab *tabptr, char *option) { zone_fsopt_t *last, *this, *next; last = tabptr->zone_fs_options; for (this = last; this != NULL; this = this->zone_fsopt_next) { if (strcmp(this->zone_fsopt_opt, option) == 0) { next = this->zone_fsopt_next; if (this == tabptr->zone_fs_options) tabptr->zone_fs_options = next; else last->zone_fsopt_next = next; free(this); return (Z_OK); } else last = this; } return (Z_NO_PROPERTY_ID); } void zonecfg_free_fs_option_list(zone_fsopt_t *list) { zone_fsopt_t *this, *next; for (this = list; this != NULL; this = next) { next = this->zone_fsopt_next; free(this); } } void zonecfg_free_rctl_value_list(struct zone_rctlvaltab *valtab) { if (valtab == NULL) return; zonecfg_free_rctl_value_list(valtab->zone_rctlval_next); free(valtab); } static boolean_t match_prop(xmlNodePtr cur, const xmlChar *attr, char *user_prop) { xmlChar *gotten_prop; int prop_result; gotten_prop = xmlGetProp(cur, attr); if (gotten_prop == NULL) /* shouldn't happen */ return (B_FALSE); prop_result = xmlStrcmp(gotten_prop, (const xmlChar *) user_prop); xmlFree(gotten_prop); return ((prop_result == 0)); } static int zonecfg_delete_filesystem_core(zone_dochandle_t handle, struct zone_fstab *tabptr) { xmlNodePtr cur = handle->zone_dh_cur; boolean_t dir_match, spec_match, raw_match, type_match; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_FS)) continue; dir_match = match_prop(cur, DTD_ATTR_DIR, tabptr->zone_fs_dir); spec_match = match_prop(cur, DTD_ATTR_SPECIAL, tabptr->zone_fs_special); raw_match = match_prop(cur, DTD_ATTR_RAW, tabptr->zone_fs_raw); type_match = match_prop(cur, DTD_ATTR_TYPE, tabptr->zone_fs_type); if (dir_match && spec_match && raw_match && type_match) { xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } } return (Z_NO_RESOURCE_ID); } int zonecfg_delete_filesystem(zone_dochandle_t handle, struct zone_fstab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_filesystem_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_modify_filesystem( zone_dochandle_t handle, struct zone_fstab *oldtabptr, struct zone_fstab *newtabptr) { int err; if (oldtabptr == NULL || newtabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_filesystem_core(handle, oldtabptr)) != Z_OK) return (err); if ((err = zonecfg_add_filesystem_core(handle, newtabptr)) != Z_OK) return (err); return (Z_OK); } static int zonecfg_delete_ipd_core(zone_dochandle_t handle, struct zone_fstab *tabptr) { xmlNodePtr cur = handle->zone_dh_cur; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_IPD)) continue; if (match_prop(cur, DTD_ATTR_DIR, tabptr->zone_fs_dir)) { xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } } return (Z_NO_RESOURCE_ID); } int zonecfg_delete_ipd(zone_dochandle_t handle, struct zone_fstab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_ipd_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_modify_ipd(zone_dochandle_t handle, struct zone_fstab *oldtabptr, struct zone_fstab *newtabptr) { int err; if (oldtabptr == NULL || newtabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_ipd_core(handle, oldtabptr)) != Z_OK) return (err); if ((err = zonecfg_add_ipd_core(handle, newtabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_lookup_filesystem( zone_dochandle_t handle, struct zone_fstab *tabptr) { xmlNodePtr cur, options, firstmatch; int err; char dirname[MAXPATHLEN], special[MAXPATHLEN], raw[MAXPATHLEN]; char type[FSTYPSZ]; char options_str[MAX_MNTOPT_STR]; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); /* * Walk the list of children looking for matches on any properties * specified in the fstab parameter. If more than one resource * matches, we return Z_INSUFFICIENT_SPEC; if none match, we return * Z_NO_RESOURCE_ID. */ cur = handle->zone_dh_cur; firstmatch = NULL; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_FS)) continue; if (strlen(tabptr->zone_fs_dir) > 0) { if ((fetchprop(cur, DTD_ATTR_DIR, dirname, sizeof (dirname)) == Z_OK) && (strcmp(tabptr->zone_fs_dir, dirname) == 0)) { if (firstmatch == NULL) firstmatch = cur; else return (Z_INSUFFICIENT_SPEC); } } if (strlen(tabptr->zone_fs_special) > 0) { if ((fetchprop(cur, DTD_ATTR_SPECIAL, special, sizeof (special)) == Z_OK)) { if (strcmp(tabptr->zone_fs_special, special) == 0) { if (firstmatch == NULL) firstmatch = cur; else if (firstmatch != cur) return (Z_INSUFFICIENT_SPEC); } else { /* * If another property matched but this * one doesn't then reset firstmatch. */ if (firstmatch == cur) firstmatch = NULL; } } } if (strlen(tabptr->zone_fs_raw) > 0) { if ((fetchprop(cur, DTD_ATTR_RAW, raw, sizeof (raw)) == Z_OK)) { if (strcmp(tabptr->zone_fs_raw, raw) == 0) { if (firstmatch == NULL) firstmatch = cur; else if (firstmatch != cur) return (Z_INSUFFICIENT_SPEC); } else { /* * If another property matched but this * one doesn't then reset firstmatch. */ if (firstmatch == cur) firstmatch = NULL; } } } if (strlen(tabptr->zone_fs_type) > 0) { if ((fetchprop(cur, DTD_ATTR_TYPE, type, sizeof (type)) == Z_OK)) { if (strcmp(tabptr->zone_fs_type, type) == 0) { if (firstmatch == NULL) firstmatch = cur; else if (firstmatch != cur) return (Z_INSUFFICIENT_SPEC); } else { /* * If another property matched but this * one doesn't then reset firstmatch. */ if (firstmatch == cur) firstmatch = NULL; } } } } if (firstmatch == NULL) return (Z_NO_RESOURCE_ID); cur = firstmatch; if ((err = fetchprop(cur, DTD_ATTR_DIR, tabptr->zone_fs_dir, sizeof (tabptr->zone_fs_dir))) != Z_OK) return (err); if ((err = fetchprop(cur, DTD_ATTR_SPECIAL, tabptr->zone_fs_special, sizeof (tabptr->zone_fs_special))) != Z_OK) return (err); if ((err = fetchprop(cur, DTD_ATTR_RAW, tabptr->zone_fs_raw, sizeof (tabptr->zone_fs_raw))) != Z_OK) return (err); if ((err = fetchprop(cur, DTD_ATTR_TYPE, tabptr->zone_fs_type, sizeof (tabptr->zone_fs_type))) != Z_OK) return (err); /* options are optional */ tabptr->zone_fs_options = NULL; for (options = cur->xmlChildrenNode; options != NULL; options = options->next) { if ((fetchprop(options, DTD_ATTR_NAME, options_str, sizeof (options_str)) != Z_OK)) break; if (zonecfg_add_fs_option(tabptr, options_str) != Z_OK) break; } return (Z_OK); } int zonecfg_lookup_ipd(zone_dochandle_t handle, struct zone_fstab *tabptr) { xmlNodePtr cur, match; int err; char dirname[MAXPATHLEN]; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); /* * General algorithm: * Walk the list of children looking for matches on any properties * specified in the fstab parameter. If more than one resource * matches, we return Z_INSUFFICIENT_SPEC; if none match, we return * Z_NO_RESOURCE_ID. */ cur = handle->zone_dh_cur; match = NULL; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_IPD)) continue; if (strlen(tabptr->zone_fs_dir) > 0) { if ((fetchprop(cur, DTD_ATTR_DIR, dirname, sizeof (dirname)) == Z_OK) && (strcmp(tabptr->zone_fs_dir, dirname) == 0)) { if (match == NULL) match = cur; else return (Z_INSUFFICIENT_SPEC); } } } if (match == NULL) return (Z_NO_RESOURCE_ID); cur = match; if ((err = fetchprop(cur, DTD_ATTR_DIR, tabptr->zone_fs_dir, sizeof (tabptr->zone_fs_dir))) != Z_OK) return (err); return (Z_OK); } /* * Compare two IP addresses in string form. Allow for the possibility that * one might have "/" at the end: allow a match on just the * IP address (or host name) part. */ boolean_t zonecfg_same_net_address(char *a1, char *a2) { char *slashp, *slashp1, *slashp2; int result; if (strcmp(a1, a2) == 0) return (B_TRUE); /* * If neither has a slash or both do, they need to match to be * considered the same, but they did not match above, so fail. */ slashp1 = strchr(a1, '/'); slashp2 = strchr(a2, '/'); if ((slashp1 == NULL && slashp2 == NULL) || (slashp1 != NULL && slashp2 != NULL)) return (B_FALSE); /* * Only one had a slash: pick that one, zero out the slash, compare * the "address only" strings, restore the slash, and return the * result of the comparison. */ slashp = (slashp1 == NULL) ? slashp2 : slashp1; *slashp = '\0'; result = strcmp(a1, a2); *slashp = '/'; return ((result == 0)); } int zonecfg_valid_net_address(char *address, struct lifreq *lifr) { struct sockaddr_in *sin4; struct sockaddr_in6 *sin6; struct addrinfo hints, *result; char *slashp = strchr(address, '/'); bzero(lifr, sizeof (struct lifreq)); sin4 = (struct sockaddr_in *)&lifr->lifr_addr; sin6 = (struct sockaddr_in6 *)&lifr->lifr_addr; if (slashp != NULL) *slashp = '\0'; if (inet_pton(AF_INET, address, &sin4->sin_addr) == 1) { sin4->sin_family = AF_INET; } else if (inet_pton(AF_INET6, address, &sin6->sin6_addr) == 1) { if (slashp == NULL) return (Z_IPV6_ADDR_PREFIX_LEN); sin6->sin6_family = AF_INET6; } else { /* "address" may be a host name */ (void) memset(&hints, 0, sizeof (hints)); hints.ai_family = PF_INET; if (getaddrinfo(address, NULL, &hints, &result) != 0) return (Z_BOGUS_ADDRESS); sin4->sin_family = result->ai_family; (void) memcpy(&sin4->sin_addr, /* LINTED E_BAD_PTR_CAST_ALIGN */ &((struct sockaddr_in *)result->ai_addr)->sin_addr, sizeof (struct in_addr)); freeaddrinfo(result); } return (Z_OK); } boolean_t zonecfg_ifname_exists(sa_family_t af, char *ifname) { struct lifreq lifr; int so; int save_errno; (void) memset(&lifr, 0, sizeof (lifr)); (void) strlcpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); lifr.lifr_addr.ss_family = af; if ((so = socket(af, SOCK_DGRAM, 0)) < 0) { /* Odd - can't tell if the ifname exists */ return (B_FALSE); } if (ioctl(so, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { save_errno = errno; (void) close(so); errno = save_errno; return (B_FALSE); } (void) close(so); return (B_TRUE); } /* * Determines if the physical interface and IP address specified by 'tabptr' * are in the zone document to which 'handle' refers. 'tabptr' must have an * interface or an address or both. If it contains both, then Z_OK is * returned iff there is exactly one match. If it contains an interface * or an address, but not both, then Z_OK is returned iff there is exactly * one entry with that interface or address. If there are multiple entries * matching the query, then Z_INSUFFICIENT_SPEC is returned. If there * are no matches, then Z_NO_RESOURCE_ID is returned. * * Errors might also be returned if the entry that exactly matches the * query lacks critical network resource information. * * If there is a single exact match, then the matching entry's physical * interface, IP address, and router information is stored in 'tabptr'. */ int zonecfg_lookup_nwif(zone_dochandle_t handle, struct zone_nwiftab *tabptr) { xmlNodePtr cur; xmlNodePtr firstmatch; boolean_t physfound; int err; char address[INET6_ADDRSTRLEN]; char physical[LIFNAMSIZ]; size_t addrspec; /* nonzero if tabptr has IP addr */ size_t physspec; /* nonzero if tabptr has interface */ if (tabptr == NULL) return (Z_INVAL); /* * zone_nwif_address and zone_nwif_physical are arrays, so no NULL * checks are necessary. */ addrspec = strlen(tabptr->zone_nwif_address); physspec = strlen(tabptr->zone_nwif_physical); assert(addrspec > 0 || physspec > 0); if ((err = operation_prep(handle)) != Z_OK) return (err); firstmatch = NULL; cur = handle->zone_dh_cur; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { /* Skip non-net elements */ if (xmlStrcmp(cur->name, DTD_ELEM_NET)) continue; /* * If an interface is specified, then first check if the current * element's interface matches the query's interface. */ if (physspec > 0) { physfound = B_FALSE; if ((fetchprop(cur, DTD_ATTR_PHYSICAL, physical, sizeof (physical)) == Z_OK) && (strcmp(tabptr->zone_nwif_physical, physical) == 0)) { if (addrspec == 0) { if (firstmatch == NULL) firstmatch = cur; else return (Z_INSUFFICIENT_SPEC); } else { /* * We're also matching based on IP * address, so we can't say that the * current element matches the query * yet. Indicate that the interfaces * match. */ physfound = B_TRUE; } } } if (addrspec > 0) { if ((fetchprop(cur, DTD_ATTR_ADDRESS, address, sizeof (address)) == Z_OK) && (zonecfg_same_net_address( tabptr->zone_nwif_address, address))) { if (physspec == 0) { /* We're only matching IP addresses. */ if (firstmatch == NULL) firstmatch = cur; else return (Z_INSUFFICIENT_SPEC); } else if (physfound) { /* * Both the interfaces and the addresses * match. */ if (firstmatch == NULL) firstmatch = cur; else return (Z_INSUFFICIENT_SPEC); } } } } if (firstmatch == NULL) return (Z_NO_RESOURCE_ID); cur = firstmatch; if ((err = fetchprop(cur, DTD_ATTR_PHYSICAL, tabptr->zone_nwif_physical, sizeof (tabptr->zone_nwif_physical))) != Z_OK) return (err); if ((err = fetchprop(cur, DTD_ATTR_ADDRESS, tabptr->zone_nwif_address, sizeof (tabptr->zone_nwif_address))) != Z_OK) return (err); if ((err = fetchprop(cur, DTD_ATTR_DEFROUTER, tabptr->zone_nwif_defrouter, sizeof (tabptr->zone_nwif_defrouter))) != Z_OK) return (err); return (Z_OK); } static int zonecfg_add_nwif_core(zone_dochandle_t handle, struct zone_nwiftab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_NET, NULL); if ((err = newprop(newnode, DTD_ATTR_ADDRESS, tabptr->zone_nwif_address)) != Z_OK) return (err); if ((err = newprop(newnode, DTD_ATTR_PHYSICAL, tabptr->zone_nwif_physical)) != Z_OK) return (err); /* * Do not add this property when it is not set, for backwards * compatibility and because it is optional. */ if ((strlen(tabptr->zone_nwif_defrouter) > 0) && ((err = newprop(newnode, DTD_ATTR_DEFROUTER, tabptr->zone_nwif_defrouter)) != Z_OK)) return (err); return (Z_OK); } int zonecfg_add_nwif(zone_dochandle_t handle, struct zone_nwiftab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_add_nwif_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } static int zonecfg_delete_nwif_core(zone_dochandle_t handle, struct zone_nwiftab *tabptr) { xmlNodePtr cur = handle->zone_dh_cur; boolean_t addr_match, phys_match; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_NET)) continue; addr_match = match_prop(cur, DTD_ATTR_ADDRESS, tabptr->zone_nwif_address); phys_match = match_prop(cur, DTD_ATTR_PHYSICAL, tabptr->zone_nwif_physical); if (addr_match && phys_match) { xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } } return (Z_NO_RESOURCE_ID); } int zonecfg_delete_nwif(zone_dochandle_t handle, struct zone_nwiftab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_nwif_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_modify_nwif( zone_dochandle_t handle, struct zone_nwiftab *oldtabptr, struct zone_nwiftab *newtabptr) { int err; if (oldtabptr == NULL || newtabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_nwif_core(handle, oldtabptr)) != Z_OK) return (err); if ((err = zonecfg_add_nwif_core(handle, newtabptr)) != Z_OK) return (err); return (Z_OK); } /* * Gets the zone hostid string stored in the specified zone configuration * document. This function returns Z_OK on success. Z_BAD_PROPERTY is returned * if the config file doesn't specify a hostid or if the hostid is blank. * * Note that buflen should be at least HW_HOSTID_LEN. */ int zonecfg_get_hostid(zone_dochandle_t handle, char *bufp, size_t buflen) { int err; if ((err = getrootattr(handle, DTD_ATTR_HOSTID, bufp, buflen)) != Z_OK) return (err); if (bufp[0] == '\0') return (Z_BAD_PROPERTY); return (Z_OK); } /* * Sets the hostid string in the specified zone config document to the given * string value. If 'hostidp' is NULL, then the config document's hostid * attribute is cleared. Non-NULL hostids are validated. This function returns * Z_OK on success. Any other return value indicates failure. */ int zonecfg_set_hostid(zone_dochandle_t handle, const char *hostidp) { int err; /* * A NULL hostid string is interpreted as a request to clear the * hostid. */ if (hostidp == NULL || (err = zonecfg_valid_hostid(hostidp)) == Z_OK) return (setrootattr(handle, DTD_ATTR_HOSTID, hostidp)); return (err); } /* * Determines if the specified string is a valid hostid string. This function * returns Z_OK if the string is a valid hostid string. It returns Z_INVAL if * 'hostidp' is NULL, Z_TOO_BIG if 'hostidp' refers to a string buffer * containing a hex string with more than 8 digits, and Z_HOSTID_FUBAR if the * string has an invalid format. */ int zonecfg_valid_hostid(const char *hostidp) { char *currentp; u_longlong_t hostidval; size_t len; if (hostidp == NULL) return (Z_INVAL); /* Empty strings and strings with whitespace are invalid. */ if (*hostidp == '\0') return (Z_HOSTID_FUBAR); for (currentp = (char *)hostidp; *currentp != '\0'; ++currentp) { if (isspace(*currentp)) return (Z_HOSTID_FUBAR); } len = (size_t)(currentp - hostidp); /* * The caller might pass a hostid that is larger than the maximum * unsigned 32-bit integral value. Check for this! Also, make sure * that the whole string is converted (this helps us find illegal * characters) and that the whole string fits within a buffer of size * HW_HOSTID_LEN. */ currentp = (char *)hostidp; if (strncmp(hostidp, "0x", 2) == 0 || strncmp(hostidp, "0X", 2) == 0) currentp += 2; hostidval = strtoull(currentp, ¤tp, 16); if ((size_t)(currentp - hostidp) >= HW_HOSTID_LEN) return (Z_TOO_BIG); if (hostidval > UINT_MAX || hostidval == HW_INVALID_HOSTID || currentp != hostidp + len) return (Z_HOSTID_FUBAR); return (Z_OK); } int zonecfg_lookup_dev(zone_dochandle_t handle, struct zone_devtab *tabptr) { xmlNodePtr cur, firstmatch; int err; char match[MAXPATHLEN]; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; firstmatch = NULL; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_DEVICE)) continue; if (strlen(tabptr->zone_dev_match) == 0) continue; if ((fetchprop(cur, DTD_ATTR_MATCH, match, sizeof (match)) == Z_OK)) { if (strcmp(tabptr->zone_dev_match, match) == 0) { if (firstmatch == NULL) firstmatch = cur; else if (firstmatch != cur) return (Z_INSUFFICIENT_SPEC); } else { /* * If another property matched but this * one doesn't then reset firstmatch. */ if (firstmatch == cur) firstmatch = NULL; } } } if (firstmatch == NULL) return (Z_NO_RESOURCE_ID); cur = firstmatch; if ((err = fetchprop(cur, DTD_ATTR_MATCH, tabptr->zone_dev_match, sizeof (tabptr->zone_dev_match))) != Z_OK) return (err); return (Z_OK); } static int zonecfg_add_dev_core(zone_dochandle_t handle, struct zone_devtab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_DEVICE, NULL); if ((err = newprop(newnode, DTD_ATTR_MATCH, tabptr->zone_dev_match)) != Z_OK) return (err); return (Z_OK); } int zonecfg_add_dev(zone_dochandle_t handle, struct zone_devtab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_add_dev_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } static int zonecfg_delete_dev_core(zone_dochandle_t handle, struct zone_devtab *tabptr) { xmlNodePtr cur = handle->zone_dh_cur; int match_match; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_DEVICE)) continue; match_match = match_prop(cur, DTD_ATTR_MATCH, tabptr->zone_dev_match); if (match_match) { xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } } return (Z_NO_RESOURCE_ID); } int zonecfg_delete_dev(zone_dochandle_t handle, struct zone_devtab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_dev_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_modify_dev( zone_dochandle_t handle, struct zone_devtab *oldtabptr, struct zone_devtab *newtabptr) { int err; if (oldtabptr == NULL || newtabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_dev_core(handle, oldtabptr)) != Z_OK) return (err); if ((err = zonecfg_add_dev_core(handle, newtabptr)) != Z_OK) return (err); return (Z_OK); } /* Lock to serialize all devwalks */ static pthread_mutex_t zonecfg_devwalk_lock = PTHREAD_MUTEX_INITIALIZER; /* * Global variables used to pass data from zonecfg_dev_manifest to the nftw * call-back (zonecfg_devwalk_cb). g_devwalk_data is really the void* * parameter and g_devwalk_cb is really the *cb parameter from * zonecfg_dev_manifest. */ typedef struct __g_devwalk_data *g_devwalk_data_t; static g_devwalk_data_t g_devwalk_data; static int (*g_devwalk_cb)(const char *, uid_t, gid_t, mode_t, const char *, void *); static size_t g_devwalk_skip_prefix; /* * zonecfg_dev_manifest call-back function used during detach to generate the * dev info in the manifest. */ static int get_detach_dev_entry(const char *name, uid_t uid, gid_t gid, mode_t mode, const char *acl, void *hdl) { zone_dochandle_t handle = (zone_dochandle_t)hdl; xmlNodePtr newnode; xmlNodePtr cur; int err; char buf[128]; if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_DEV_PERM, NULL); if ((err = newprop(newnode, DTD_ATTR_NAME, (char *)name)) != Z_OK) return (err); (void) snprintf(buf, sizeof (buf), "%lu", uid); if ((err = newprop(newnode, DTD_ATTR_UID, buf)) != Z_OK) return (err); (void) snprintf(buf, sizeof (buf), "%lu", gid); if ((err = newprop(newnode, DTD_ATTR_GID, buf)) != Z_OK) return (err); (void) snprintf(buf, sizeof (buf), "%o", mode); if ((err = newprop(newnode, DTD_ATTR_MODE, buf)) != Z_OK) return (err); if ((err = newprop(newnode, DTD_ATTR_ACL, (char *)acl)) != Z_OK) return (err); return (Z_OK); } /* * This is the nftw call-back function used by zonecfg_dev_manifest. It is * responsible for calling the actual call-back. */ /* ARGSUSED2 */ static int zonecfg_devwalk_cb(const char *path, const struct stat *st, int f, struct FTW *ftw) { acl_t *acl; char *acl_txt = NULL; /* skip all but character and block devices */ if (!S_ISBLK(st->st_mode) && !S_ISCHR(st->st_mode)) return (0); if ((acl_get(path, ACL_NO_TRIVIAL, &acl) == 0) && acl != NULL) { acl_txt = acl_totext(acl, ACL_NORESOLVE); acl_free(acl); } if (strlen(path) <= g_devwalk_skip_prefix) return (0); g_devwalk_cb(path + g_devwalk_skip_prefix, st->st_uid, st->st_gid, st->st_mode & S_IAMB, acl_txt != NULL ? acl_txt : "", g_devwalk_data); free(acl_txt); return (0); } /* * Walk the dev tree for the zone specified by hdl and call the * get_detach_dev_entry call-back function for each entry in the tree. The * call-back will be passed the name, uid, gid, mode, acl string and the * handle input parameter for each dev entry. * * Data is passed to get_detach_dev_entry through the global variables * g_devwalk_data, *g_devwalk_cb, and g_devwalk_skip_prefix. The * zonecfg_devwalk_cb function will actually call get_detach_dev_entry. */ int zonecfg_dev_manifest(zone_dochandle_t hdl) { char path[MAXPATHLEN]; int ret; if ((ret = zonecfg_get_zonepath(hdl, path, sizeof (path))) != Z_OK) return (ret); if (strlcat(path, "/dev", sizeof (path)) >= sizeof (path)) return (Z_TOO_BIG); /* * We have to serialize all devwalks in the same process * (which should be fine), since nftw() is so badly designed. */ (void) pthread_mutex_lock(&zonecfg_devwalk_lock); g_devwalk_skip_prefix = strlen(path) + 1; g_devwalk_data = (g_devwalk_data_t)hdl; g_devwalk_cb = get_detach_dev_entry; (void) nftw(path, zonecfg_devwalk_cb, 0, FTW_PHYS); (void) pthread_mutex_unlock(&zonecfg_devwalk_lock); return (Z_OK); } /* * Update the owner, group, mode and acl on the specified dev (inpath) for * the zone (hdl). This function can be used to fix up the dev tree after * attaching a migrated zone. */ int zonecfg_devperms_apply(zone_dochandle_t hdl, const char *inpath, uid_t owner, gid_t group, mode_t mode, const char *acltxt) { int ret; char path[MAXPATHLEN]; struct stat st; acl_t *aclp; if ((ret = zonecfg_get_zonepath(hdl, path, sizeof (path))) != Z_OK) return (ret); if (strlcat(path, "/dev/", sizeof (path)) >= sizeof (path)) return (Z_TOO_BIG); if (strlcat(path, inpath, sizeof (path)) >= sizeof (path)) return (Z_TOO_BIG); if (stat(path, &st) == -1) return (Z_INVAL); /* make sure we're only touching device nodes */ if (!S_ISCHR(st.st_mode) && !S_ISBLK(st.st_mode)) return (Z_INVAL); if (chown(path, owner, group) == -1) return (Z_SYSTEM); if (chmod(path, mode) == -1) return (Z_SYSTEM); if ((acltxt == NULL) || (strcmp(acltxt, "") == 0)) return (Z_OK); if (acl_fromtext(acltxt, &aclp) != 0) { errno = EINVAL; return (Z_SYSTEM); } errno = 0; if (acl_set(path, aclp) == -1) { free(aclp); return (Z_SYSTEM); } free(aclp); return (Z_OK); } /* * This function finds everything mounted under a zone's rootpath. * This returns the number of mounts under rootpath, or -1 on error. * callback is called once per mount found with the first argument * pointing to the mount point. * * If the callback function returns non-zero zonecfg_find_mounts * aborts with an error. */ int zonecfg_find_mounts(char *rootpath, int (*callback)(const char *, void *), void *priv) { FILE *mnttab; struct mnttab m; size_t l; int zfsl; int rv = 0; char zfs_path[MAXPATHLEN]; assert(rootpath != NULL); if ((zfsl = snprintf(zfs_path, sizeof (zfs_path), "%s/.zfs/", rootpath)) >= sizeof (zfs_path)) return (-1); l = strlen(rootpath); mnttab = fopen("/etc/mnttab", "r"); if (mnttab == NULL) return (-1); if (ioctl(fileno(mnttab), MNTIOC_SHOWHIDDEN, NULL) < 0) { rv = -1; goto out; } while (!getmntent(mnttab, &m)) { if ((strncmp(rootpath, m.mnt_mountp, l) == 0) && (m.mnt_mountp[l] == '/') && (strncmp(zfs_path, m.mnt_mountp, zfsl) != 0)) { rv++; if (callback == NULL) continue; if (callback(m.mnt_mountp, priv)) { rv = -1; goto out; } } } out: (void) fclose(mnttab); return (rv); } int zonecfg_lookup_attr(zone_dochandle_t handle, struct zone_attrtab *tabptr) { xmlNodePtr cur, firstmatch; int err; char name[MAXNAMELEN], type[MAXNAMELEN], value[MAXNAMELEN]; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; firstmatch = NULL; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_ATTR)) continue; if (strlen(tabptr->zone_attr_name) > 0) { if ((fetchprop(cur, DTD_ATTR_NAME, name, sizeof (name)) == Z_OK) && (strcmp(tabptr->zone_attr_name, name) == 0)) { if (firstmatch == NULL) firstmatch = cur; else return (Z_INSUFFICIENT_SPEC); } } if (strlen(tabptr->zone_attr_type) > 0) { if ((fetchprop(cur, DTD_ATTR_TYPE, type, sizeof (type)) == Z_OK)) { if (strcmp(tabptr->zone_attr_type, type) == 0) { if (firstmatch == NULL) firstmatch = cur; else if (firstmatch != cur) return (Z_INSUFFICIENT_SPEC); } else { /* * If another property matched but this * one doesn't then reset firstmatch. */ if (firstmatch == cur) firstmatch = NULL; } } } if (strlen(tabptr->zone_attr_value) > 0) { if ((fetchprop(cur, DTD_ATTR_VALUE, value, sizeof (value)) == Z_OK)) { if (strcmp(tabptr->zone_attr_value, value) == 0) { if (firstmatch == NULL) firstmatch = cur; else if (firstmatch != cur) return (Z_INSUFFICIENT_SPEC); } else { /* * If another property matched but this * one doesn't then reset firstmatch. */ if (firstmatch == cur) firstmatch = NULL; } } } } if (firstmatch == NULL) return (Z_NO_RESOURCE_ID); cur = firstmatch; if ((err = fetchprop(cur, DTD_ATTR_NAME, tabptr->zone_attr_name, sizeof (tabptr->zone_attr_name))) != Z_OK) return (err); if ((err = fetchprop(cur, DTD_ATTR_TYPE, tabptr->zone_attr_type, sizeof (tabptr->zone_attr_type))) != Z_OK) return (err); if ((err = fetchprop(cur, DTD_ATTR_VALUE, tabptr->zone_attr_value, sizeof (tabptr->zone_attr_value))) != Z_OK) return (err); return (Z_OK); } static int zonecfg_add_attr_core(zone_dochandle_t handle, struct zone_attrtab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_ATTR, NULL); err = newprop(newnode, DTD_ATTR_NAME, tabptr->zone_attr_name); if (err != Z_OK) return (err); err = newprop(newnode, DTD_ATTR_TYPE, tabptr->zone_attr_type); if (err != Z_OK) return (err); err = newprop(newnode, DTD_ATTR_VALUE, tabptr->zone_attr_value); if (err != Z_OK) return (err); return (Z_OK); } int zonecfg_add_attr(zone_dochandle_t handle, struct zone_attrtab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_add_attr_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } static int zonecfg_delete_attr_core(zone_dochandle_t handle, struct zone_attrtab *tabptr) { xmlNodePtr cur = handle->zone_dh_cur; int name_match, type_match, value_match; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_ATTR)) continue; name_match = match_prop(cur, DTD_ATTR_NAME, tabptr->zone_attr_name); type_match = match_prop(cur, DTD_ATTR_TYPE, tabptr->zone_attr_type); value_match = match_prop(cur, DTD_ATTR_VALUE, tabptr->zone_attr_value); if (name_match && type_match && value_match) { xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } } return (Z_NO_RESOURCE_ID); } int zonecfg_delete_attr(zone_dochandle_t handle, struct zone_attrtab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_attr_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_modify_attr( zone_dochandle_t handle, struct zone_attrtab *oldtabptr, struct zone_attrtab *newtabptr) { int err; if (oldtabptr == NULL || newtabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_attr_core(handle, oldtabptr)) != Z_OK) return (err); if ((err = zonecfg_add_attr_core(handle, newtabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_get_attr_boolean(const struct zone_attrtab *attr, boolean_t *value) { if (attr == NULL) return (Z_INVAL); if (strcmp(attr->zone_attr_type, DTD_ENTITY_BOOLEAN) != 0) return (Z_INVAL); if (strcmp(attr->zone_attr_value, DTD_ENTITY_TRUE) == 0) { *value = B_TRUE; return (Z_OK); } if (strcmp(attr->zone_attr_value, DTD_ENTITY_FALSE) == 0) { *value = B_FALSE; return (Z_OK); } return (Z_INVAL); } int zonecfg_get_attr_int(const struct zone_attrtab *attr, int64_t *value) { long long result; char *endptr; if (attr == NULL) return (Z_INVAL); if (strcmp(attr->zone_attr_type, DTD_ENTITY_INT) != 0) return (Z_INVAL); errno = 0; result = strtoll(attr->zone_attr_value, &endptr, 10); if (errno != 0 || *endptr != '\0') return (Z_INVAL); *value = result; return (Z_OK); } int zonecfg_get_attr_string(const struct zone_attrtab *attr, char *value, size_t val_sz) { if (attr == NULL) return (Z_INVAL); if (strcmp(attr->zone_attr_type, DTD_ENTITY_STRING) != 0) return (Z_INVAL); if (strlcpy(value, attr->zone_attr_value, val_sz) >= val_sz) return (Z_TOO_BIG); return (Z_OK); } int zonecfg_get_attr_uint(const struct zone_attrtab *attr, uint64_t *value) { unsigned long long result; long long neg_result; char *endptr; if (attr == NULL) return (Z_INVAL); if (strcmp(attr->zone_attr_type, DTD_ENTITY_UINT) != 0) return (Z_INVAL); errno = 0; result = strtoull(attr->zone_attr_value, &endptr, 10); if (errno != 0 || *endptr != '\0') return (Z_INVAL); errno = 0; neg_result = strtoll(attr->zone_attr_value, &endptr, 10); /* * Incredibly, strtoull("", ...) will not fail but * return whatever (negative) number cast as a u_longlong_t, so we * need to look for this here. */ if (errno == 0 && neg_result < 0) return (Z_INVAL); *value = result; return (Z_OK); } int zonecfg_lookup_rctl(zone_dochandle_t handle, struct zone_rctltab *tabptr) { xmlNodePtr cur, val; char savedname[MAXNAMELEN]; struct zone_rctlvaltab *valptr; int err; if (strlen(tabptr->zone_rctl_name) == 0) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_RCTL)) continue; if ((fetchprop(cur, DTD_ATTR_NAME, savedname, sizeof (savedname)) == Z_OK) && (strcmp(savedname, tabptr->zone_rctl_name) == 0)) { tabptr->zone_rctl_valptr = NULL; for (val = cur->xmlChildrenNode; val != NULL; val = val->next) { valptr = (struct zone_rctlvaltab *)malloc( sizeof (struct zone_rctlvaltab)); if (valptr == NULL) return (Z_NOMEM); if ((fetchprop(val, DTD_ATTR_PRIV, valptr->zone_rctlval_priv, sizeof (valptr->zone_rctlval_priv)) != Z_OK)) break; if ((fetchprop(val, DTD_ATTR_LIMIT, valptr->zone_rctlval_limit, sizeof (valptr->zone_rctlval_limit)) != Z_OK)) break; if ((fetchprop(val, DTD_ATTR_ACTION, valptr->zone_rctlval_action, sizeof (valptr->zone_rctlval_action)) != Z_OK)) break; if (zonecfg_add_rctl_value(tabptr, valptr) != Z_OK) break; } return (Z_OK); } } return (Z_NO_RESOURCE_ID); } static int zonecfg_add_rctl_core(zone_dochandle_t handle, struct zone_rctltab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur, valnode; struct zone_rctlvaltab *valptr; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_RCTL, NULL); err = newprop(newnode, DTD_ATTR_NAME, tabptr->zone_rctl_name); if (err != Z_OK) return (err); for (valptr = tabptr->zone_rctl_valptr; valptr != NULL; valptr = valptr->zone_rctlval_next) { valnode = xmlNewTextChild(newnode, NULL, DTD_ELEM_RCTLVALUE, NULL); err = newprop(valnode, DTD_ATTR_PRIV, valptr->zone_rctlval_priv); if (err != Z_OK) return (err); err = newprop(valnode, DTD_ATTR_LIMIT, valptr->zone_rctlval_limit); if (err != Z_OK) return (err); err = newprop(valnode, DTD_ATTR_ACTION, valptr->zone_rctlval_action); if (err != Z_OK) return (err); } return (Z_OK); } int zonecfg_add_rctl(zone_dochandle_t handle, struct zone_rctltab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_add_rctl_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } static int zonecfg_delete_rctl_core(zone_dochandle_t handle, struct zone_rctltab *tabptr) { xmlNodePtr cur = handle->zone_dh_cur; xmlChar *savedname; int name_result; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_RCTL)) continue; savedname = xmlGetProp(cur, DTD_ATTR_NAME); if (savedname == NULL) /* shouldn't happen */ continue; name_result = xmlStrcmp(savedname, (const xmlChar *) tabptr->zone_rctl_name); xmlFree(savedname); if (name_result == 0) { xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } } return (Z_NO_RESOURCE_ID); } int zonecfg_delete_rctl(zone_dochandle_t handle, struct zone_rctltab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_rctl_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_modify_rctl( zone_dochandle_t handle, struct zone_rctltab *oldtabptr, struct zone_rctltab *newtabptr) { int err; if (oldtabptr == NULL || newtabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_rctl_core(handle, oldtabptr)) != Z_OK) return (err); if ((err = zonecfg_add_rctl_core(handle, newtabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_add_rctl_value( struct zone_rctltab *tabptr, struct zone_rctlvaltab *valtabptr) { struct zone_rctlvaltab *last, *old, *new; rctlblk_t *rctlblk = alloca(rctlblk_size()); last = tabptr->zone_rctl_valptr; for (old = last; old != NULL; old = old->zone_rctlval_next) last = old; /* walk to the end of the list */ new = valtabptr; /* alloc'd by caller */ new->zone_rctlval_next = NULL; if (zonecfg_construct_rctlblk(valtabptr, rctlblk) != Z_OK) return (Z_INVAL); if (!zonecfg_valid_rctlblk(rctlblk)) return (Z_INVAL); if (last == NULL) tabptr->zone_rctl_valptr = new; else last->zone_rctlval_next = new; return (Z_OK); } int zonecfg_remove_rctl_value( struct zone_rctltab *tabptr, struct zone_rctlvaltab *valtabptr) { struct zone_rctlvaltab *last, *this, *next; last = tabptr->zone_rctl_valptr; for (this = last; this != NULL; this = this->zone_rctlval_next) { if (strcmp(this->zone_rctlval_priv, valtabptr->zone_rctlval_priv) == 0 && strcmp(this->zone_rctlval_limit, valtabptr->zone_rctlval_limit) == 0 && strcmp(this->zone_rctlval_action, valtabptr->zone_rctlval_action) == 0) { next = this->zone_rctlval_next; if (this == tabptr->zone_rctl_valptr) tabptr->zone_rctl_valptr = next; else last->zone_rctlval_next = next; free(this); return (Z_OK); } else last = this; } return (Z_NO_PROPERTY_ID); } void zonecfg_set_swinv(zone_dochandle_t handle) { handle->zone_dh_sw_inv = B_TRUE; } /* * Add the pkg to the sw inventory on the handle. */ int zonecfg_add_pkg(zone_dochandle_t handle, char *name, char *version) { xmlNodePtr newnode; xmlNodePtr cur; int err; if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_PACKAGE, NULL); if ((err = newprop(newnode, DTD_ATTR_NAME, name)) != Z_OK) return (err); if ((err = newprop(newnode, DTD_ATTR_VERSION, version)) != Z_OK) return (err); return (Z_OK); } int zonecfg_add_patch(zone_dochandle_t handle, char *id, void **pnode) { xmlNodePtr node = (xmlNodePtr)*pnode; xmlNodePtr cur; int err; if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; node = xmlNewTextChild(cur, NULL, DTD_ELEM_PATCH, NULL); if ((err = newprop(node, DTD_ATTR_ID, id)) != Z_OK) return (err); *pnode = (void *)node; return (Z_OK); } int zonecfg_add_patch_obs(char *id, void *cur) { xmlNodePtr node; int err; node = xmlNewTextChild((xmlNodePtr)cur, NULL, DTD_ELEM_OBSOLETES, NULL); if ((err = newprop(node, DTD_ATTR_ID, id)) != Z_OK) return (err); return (Z_OK); } char * zonecfg_strerror(int errnum) { switch (errnum) { case Z_OK: return (dgettext(TEXT_DOMAIN, "OK")); case Z_EMPTY_DOCUMENT: return (dgettext(TEXT_DOMAIN, "Empty document")); case Z_WRONG_DOC_TYPE: return (dgettext(TEXT_DOMAIN, "Wrong document type")); case Z_BAD_PROPERTY: return (dgettext(TEXT_DOMAIN, "Bad document property")); case Z_TEMP_FILE: return (dgettext(TEXT_DOMAIN, "Problem creating temporary file")); case Z_SAVING_FILE: return (dgettext(TEXT_DOMAIN, "Problem saving file")); case Z_NO_ENTRY: return (dgettext(TEXT_DOMAIN, "No such entry")); case Z_BOGUS_ZONE_NAME: return (dgettext(TEXT_DOMAIN, "Bogus zone name")); case Z_REQD_RESOURCE_MISSING: return (dgettext(TEXT_DOMAIN, "Required resource missing")); case Z_REQD_PROPERTY_MISSING: return (dgettext(TEXT_DOMAIN, "Required property missing")); case Z_BAD_HANDLE: return (dgettext(TEXT_DOMAIN, "Bad handle")); case Z_NOMEM: return (dgettext(TEXT_DOMAIN, "Out of memory")); case Z_INVAL: return (dgettext(TEXT_DOMAIN, "Invalid argument")); case Z_ACCES: return (dgettext(TEXT_DOMAIN, "Permission denied")); case Z_TOO_BIG: return (dgettext(TEXT_DOMAIN, "Argument list too long")); case Z_MISC_FS: return (dgettext(TEXT_DOMAIN, "Miscellaneous file system error")); case Z_NO_ZONE: return (dgettext(TEXT_DOMAIN, "No such zone configured")); case Z_NO_RESOURCE_TYPE: return (dgettext(TEXT_DOMAIN, "No such resource type")); case Z_NO_RESOURCE_ID: return (dgettext(TEXT_DOMAIN, "No such resource with that id")); case Z_NO_PROPERTY_TYPE: return (dgettext(TEXT_DOMAIN, "No such property type")); case Z_NO_PROPERTY_ID: return (dgettext(TEXT_DOMAIN, "No such property with that id")); case Z_BAD_ZONE_STATE: return (dgettext(TEXT_DOMAIN, "Zone state is invalid for the requested operation")); case Z_INVALID_DOCUMENT: return (dgettext(TEXT_DOMAIN, "Invalid document")); case Z_NAME_IN_USE: return (dgettext(TEXT_DOMAIN, "Zone name already in use")); case Z_NO_SUCH_ID: return (dgettext(TEXT_DOMAIN, "No such zone ID")); case Z_UPDATING_INDEX: return (dgettext(TEXT_DOMAIN, "Problem updating index file")); case Z_LOCKING_FILE: return (dgettext(TEXT_DOMAIN, "Locking index file")); case Z_UNLOCKING_FILE: return (dgettext(TEXT_DOMAIN, "Unlocking index file")); case Z_INSUFFICIENT_SPEC: return (dgettext(TEXT_DOMAIN, "Insufficient specification")); case Z_RESOLVED_PATH: return (dgettext(TEXT_DOMAIN, "Resolved path mismatch")); case Z_IPV6_ADDR_PREFIX_LEN: return (dgettext(TEXT_DOMAIN, "IPv6 address missing required prefix length")); case Z_BOGUS_ADDRESS: return (dgettext(TEXT_DOMAIN, "Neither an IPv4 nor an IPv6 address nor a host name")); case Z_PRIV_PROHIBITED: return (dgettext(TEXT_DOMAIN, "Specified privilege is prohibited")); case Z_PRIV_REQUIRED: return (dgettext(TEXT_DOMAIN, "Required privilege is missing")); case Z_PRIV_UNKNOWN: return (dgettext(TEXT_DOMAIN, "Specified privilege is unknown")); case Z_BRAND_ERROR: return (dgettext(TEXT_DOMAIN, "Brand-specific error")); case Z_INCOMPATIBLE: return (dgettext(TEXT_DOMAIN, "Incompatible settings")); case Z_ALIAS_DISALLOW: return (dgettext(TEXT_DOMAIN, "An incompatible rctl already exists for this property")); case Z_CLEAR_DISALLOW: return (dgettext(TEXT_DOMAIN, "Clearing this property is not allowed")); case Z_POOL: return (dgettext(TEXT_DOMAIN, "libpool(3LIB) error")); case Z_POOLS_NOT_ACTIVE: return (dgettext(TEXT_DOMAIN, "Pools facility not active; " "zone will not be bound to pool")); case Z_POOL_ENABLE: return (dgettext(TEXT_DOMAIN, "Could not enable pools facility")); case Z_NO_POOL: return (dgettext(TEXT_DOMAIN, "Pool not found; using default pool")); case Z_POOL_CREATE: return (dgettext(TEXT_DOMAIN, "Could not create a temporary pool")); case Z_POOL_BIND: return (dgettext(TEXT_DOMAIN, "Could not bind zone to pool")); case Z_HOSTID_FUBAR: return (dgettext(TEXT_DOMAIN, "Specified hostid is invalid")); case Z_SYSTEM: return (strerror(errno)); default: return (dgettext(TEXT_DOMAIN, "Unknown error")); } } /* * Note that the zonecfg_setXent() and zonecfg_endXent() calls are all the * same, as they just turn around and call zonecfg_setent() / zonecfg_endent(). */ static int zonecfg_setent(zone_dochandle_t handle) { xmlNodePtr cur; int err; if (handle == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) { handle->zone_dh_cur = NULL; return (err); } cur = handle->zone_dh_cur; cur = cur->xmlChildrenNode; handle->zone_dh_cur = cur; return (Z_OK); } static int zonecfg_endent(zone_dochandle_t handle) { if (handle == NULL) return (Z_INVAL); handle->zone_dh_cur = handle->zone_dh_top; return (Z_OK); } /* * Do the work required to manipulate a process through libproc. * If grab_process() returns no errors (0), then release_process() * must eventually be called. * * Return values: * 0 Successful creation of agent thread * 1 Error grabbing * 2 Error creating agent */ static int grab_process(pr_info_handle_t *p) { int ret; if ((p->pr = Pgrab(p->pid, 0, &ret)) != NULL) { if (Psetflags(p->pr, PR_RLC) != 0) { Prelease(p->pr, 0); return (1); } if (Pcreate_agent(p->pr) == 0) { return (0); } else { Prelease(p->pr, 0); return (2); } } else { return (1); } } /* * Release the specified process. This destroys the agent * and releases the process. If the process is NULL, nothing * is done. This function should only be called if grab_process() * has previously been called and returned success. * * This function is Pgrab-safe. */ static void release_process(struct ps_prochandle *Pr) { if (Pr == NULL) return; Pdestroy_agent(Pr); Prelease(Pr, 0); } static boolean_t grab_zone_proc(char *zonename, pr_info_handle_t *p) { DIR *dirp; struct dirent *dentp; zoneid_t zoneid; int pid_self; psinfo_t psinfo; if (zone_get_id(zonename, &zoneid) != 0) return (B_FALSE); pid_self = getpid(); if ((dirp = opendir("/proc")) == NULL) return (B_FALSE); while (dentp = readdir(dirp)) { p->pid = atoi(dentp->d_name); /* Skip self */ if (p->pid == pid_self) continue; if (proc_get_psinfo(p->pid, &psinfo) != 0) continue; if (psinfo.pr_zoneid != zoneid) continue; /* attempt to grab process */ if (grab_process(p) != 0) continue; if (pr_getzoneid(p->pr) != zoneid) { release_process(p->pr); continue; } (void) closedir(dirp); return (B_TRUE); } (void) closedir(dirp); return (B_FALSE); } static boolean_t get_priv_rctl(struct ps_prochandle *pr, char *name, rctlblk_t *rblk) { if (pr_getrctl(pr, name, NULL, rblk, RCTL_FIRST)) return (B_FALSE); if (rctlblk_get_privilege(rblk) == RCPRIV_PRIVILEGED) return (B_TRUE); while (pr_getrctl(pr, name, rblk, rblk, RCTL_NEXT) == 0) { if (rctlblk_get_privilege(rblk) == RCPRIV_PRIVILEGED) return (B_TRUE); } return (B_FALSE); } /* * Apply the current rctl settings to the specified, running zone. */ int zonecfg_apply_rctls(char *zone_name, zone_dochandle_t handle) { int err; int res = Z_OK; rctlblk_t *rblk; pr_info_handle_t p; struct zone_rctltab rctl; if ((err = zonecfg_setrctlent(handle)) != Z_OK) return (err); if ((rblk = (rctlblk_t *)malloc(rctlblk_size())) == NULL) { (void) zonecfg_endrctlent(handle); return (Z_NOMEM); } if (!grab_zone_proc(zone_name, &p)) { (void) zonecfg_endrctlent(handle); free(rblk); return (Z_SYSTEM); } while (zonecfg_getrctlent(handle, &rctl) == Z_OK) { char *rname; struct zone_rctlvaltab *valptr; rname = rctl.zone_rctl_name; /* first delete all current privileged settings for this rctl */ while (get_priv_rctl(p.pr, rname, rblk)) { if (pr_setrctl(p.pr, rname, NULL, rblk, RCTL_DELETE) != 0) { res = Z_SYSTEM; goto done; } } /* now set each new value for the rctl */ for (valptr = rctl.zone_rctl_valptr; valptr != NULL; valptr = valptr->zone_rctlval_next) { if ((err = zonecfg_construct_rctlblk(valptr, rblk)) != Z_OK) { res = errno = err; goto done; } if (pr_setrctl(p.pr, rname, NULL, rblk, RCTL_INSERT)) { res = Z_SYSTEM; goto done; } } } done: release_process(p.pr); free(rblk); (void) zonecfg_endrctlent(handle); return (res); } static const xmlChar * nm_to_dtd(char *nm) { if (strcmp(nm, "device") == 0) return (DTD_ELEM_DEVICE); if (strcmp(nm, "fs") == 0) return (DTD_ELEM_FS); if (strcmp(nm, "inherit-pkg-dir") == 0) return (DTD_ELEM_IPD); if (strcmp(nm, "net") == 0) return (DTD_ELEM_NET); if (strcmp(nm, "attr") == 0) return (DTD_ELEM_ATTR); if (strcmp(nm, "rctl") == 0) return (DTD_ELEM_RCTL); if (strcmp(nm, "dataset") == 0) return (DTD_ELEM_DATASET); return (NULL); } int zonecfg_num_resources(zone_dochandle_t handle, char *rsrc) { int num = 0; const xmlChar *dtd; xmlNodePtr cur; if ((dtd = nm_to_dtd(rsrc)) == NULL) return (num); if (zonecfg_setent(handle) != Z_OK) return (num); for (cur = handle->zone_dh_cur; cur != NULL; cur = cur->next) if (xmlStrcmp(cur->name, dtd) == 0) num++; (void) zonecfg_endent(handle); return (num); } int zonecfg_del_all_resources(zone_dochandle_t handle, char *rsrc) { int err; const xmlChar *dtd; xmlNodePtr cur; if ((dtd = nm_to_dtd(rsrc)) == NULL) return (Z_NO_RESOURCE_TYPE); if ((err = zonecfg_setent(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; while (cur != NULL) { xmlNodePtr tmp; if (xmlStrcmp(cur->name, dtd)) { cur = cur->next; continue; } tmp = cur->next; xmlUnlinkNode(cur); xmlFreeNode(cur); cur = tmp; } (void) zonecfg_endent(handle); return (Z_OK); } static boolean_t valid_uint(char *s, uint64_t *n) { char *endp; /* strtoull accepts '-'?! so we want to flag that as an error */ if (strchr(s, '-') != NULL) return (B_FALSE); errno = 0; *n = strtoull(s, &endp, 10); if (errno != 0 || *endp != '\0') return (B_FALSE); return (B_TRUE); } /* * Convert a string representing a number (possibly a fraction) into an integer. * The string can have a modifier (K, M, G or T). The modifiers are treated * as powers of two (not 10). */ int zonecfg_str_to_bytes(char *str, uint64_t *bytes) { long double val; char *unitp; uint64_t scale; if ((val = strtold(str, &unitp)) < 0) return (-1); /* remove any leading white space from units string */ while (isspace(*unitp) != 0) ++unitp; /* if no units explicitly set, error */ if (unitp == NULL || *unitp == '\0') { scale = 1; } else { int i; char *units[] = {"K", "M", "G", "T", NULL}; scale = 1024; /* update scale based on units */ for (i = 0; units[i] != NULL; i++) { if (strcasecmp(unitp, units[i]) == 0) break; scale <<= 10; } if (units[i] == NULL) return (-1); } *bytes = (uint64_t)(val * scale); return (0); } boolean_t zonecfg_valid_ncpus(char *lowstr, char *highstr) { uint64_t low, high; if (!valid_uint(lowstr, &low) || !valid_uint(highstr, &high) || low < 1 || low > high) return (B_FALSE); return (B_TRUE); } boolean_t zonecfg_valid_importance(char *impstr) { uint64_t num; if (!valid_uint(impstr, &num)) return (B_FALSE); return (B_TRUE); } boolean_t zonecfg_valid_alias_limit(char *name, char *limitstr, uint64_t *limit) { int i; for (i = 0; aliases[i].shortname != NULL; i++) if (strcmp(name, aliases[i].shortname) == 0) break; if (aliases[i].shortname == NULL) return (B_FALSE); if (!valid_uint(limitstr, limit) || *limit < aliases[i].low_limit) return (B_FALSE); return (B_TRUE); } boolean_t zonecfg_valid_memlimit(char *memstr, uint64_t *mem_val) { if (zonecfg_str_to_bytes(memstr, mem_val) != 0) return (B_FALSE); return (B_TRUE); } static int zerr_pool(char *pool_err, int err_size, int res) { (void) strlcpy(pool_err, pool_strerror(pool_error()), err_size); return (res); } static int create_tmp_pset(char *pool_err, int err_size, pool_conf_t *pconf, pool_t *pool, char *name, int min, int max) { pool_resource_t *res; pool_elem_t *elem; pool_value_t *val; if ((res = pool_resource_create(pconf, "pset", name)) == NULL) return (zerr_pool(pool_err, err_size, Z_POOL)); if (pool_associate(pconf, pool, res) != PO_SUCCESS) return (zerr_pool(pool_err, err_size, Z_POOL)); if ((elem = pool_resource_to_elem(pconf, res)) == NULL) return (zerr_pool(pool_err, err_size, Z_POOL)); if ((val = pool_value_alloc()) == NULL) return (zerr_pool(pool_err, err_size, Z_POOL)); /* set the maximum number of cpus for the pset */ pool_value_set_uint64(val, (uint64_t)max); if (pool_put_property(pconf, elem, "pset.max", val) != PO_SUCCESS) { pool_value_free(val); return (zerr_pool(pool_err, err_size, Z_POOL)); } /* set the minimum number of cpus for the pset */ pool_value_set_uint64(val, (uint64_t)min); if (pool_put_property(pconf, elem, "pset.min", val) != PO_SUCCESS) { pool_value_free(val); return (zerr_pool(pool_err, err_size, Z_POOL)); } pool_value_free(val); return (Z_OK); } static int create_tmp_pool(char *pool_err, int err_size, pool_conf_t *pconf, char *name, struct zone_psettab *pset_tab) { pool_t *pool; int res = Z_OK; /* create a temporary pool configuration */ if (pool_conf_open(pconf, NULL, PO_TEMP) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL); return (res); } if ((pool = pool_create(pconf, name)) == NULL) { res = zerr_pool(pool_err, err_size, Z_POOL_CREATE); goto done; } /* set pool importance */ if (pset_tab->zone_importance[0] != '\0') { pool_elem_t *elem; pool_value_t *val; if ((elem = pool_to_elem(pconf, pool)) == NULL) { res = zerr_pool(pool_err, err_size, Z_POOL); goto done; } if ((val = pool_value_alloc()) == NULL) { res = zerr_pool(pool_err, err_size, Z_POOL); goto done; } pool_value_set_int64(val, (int64_t)atoi(pset_tab->zone_importance)); if (pool_put_property(pconf, elem, "pool.importance", val) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL); pool_value_free(val); goto done; } pool_value_free(val); } if ((res = create_tmp_pset(pool_err, err_size, pconf, pool, name, atoi(pset_tab->zone_ncpu_min), atoi(pset_tab->zone_ncpu_max))) != Z_OK) goto done; /* validation */ if (pool_conf_status(pconf) == POF_INVALID) { res = zerr_pool(pool_err, err_size, Z_POOL); goto done; } /* * This validation is the one we expect to fail if the user specified * an invalid configuration (too many cpus) for this system. */ if (pool_conf_validate(pconf, POV_RUNTIME) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL_CREATE); goto done; } /* * Commit the dynamic configuration but not the pool configuration * file. */ if (pool_conf_commit(pconf, 1) != PO_SUCCESS) res = zerr_pool(pool_err, err_size, Z_POOL); done: (void) pool_conf_close(pconf); return (res); } static int get_running_tmp_pset(pool_conf_t *pconf, pool_t *pool, pool_resource_t *pset, struct zone_psettab *pset_tab) { int nfound = 0; pool_elem_t *pe; pool_value_t *pv = pool_value_alloc(); uint64_t val_uint; if (pool != NULL) { pe = pool_to_elem(pconf, pool); if (pool_get_property(pconf, pe, "pool.importance", pv) != POC_INVAL) { int64_t val_int; (void) pool_value_get_int64(pv, &val_int); (void) snprintf(pset_tab->zone_importance, sizeof (pset_tab->zone_importance), "%d", val_int); nfound++; } } if (pset != NULL) { pe = pool_resource_to_elem(pconf, pset); if (pool_get_property(pconf, pe, "pset.min", pv) != POC_INVAL) { (void) pool_value_get_uint64(pv, &val_uint); (void) snprintf(pset_tab->zone_ncpu_min, sizeof (pset_tab->zone_ncpu_min), "%u", val_uint); nfound++; } if (pool_get_property(pconf, pe, "pset.max", pv) != POC_INVAL) { (void) pool_value_get_uint64(pv, &val_uint); (void) snprintf(pset_tab->zone_ncpu_max, sizeof (pset_tab->zone_ncpu_max), "%u", val_uint); nfound++; } } pool_value_free(pv); if (nfound == 3) return (PO_SUCCESS); return (PO_FAIL); } /* * Determine if a tmp pool is configured and if so, if the configuration is * still valid or if it has been changed since the tmp pool was created. * If the tmp pool configuration is no longer valid, delete the tmp pool. * * Set *valid=B_TRUE if there is an existing, valid tmp pool configuration. */ static int verify_del_tmp_pool(pool_conf_t *pconf, char *tmp_name, char *pool_err, int err_size, struct zone_psettab *pset_tab, boolean_t *exists) { int res = Z_OK; pool_t *pool; pool_resource_t *pset; struct zone_psettab pset_current; *exists = B_FALSE; if (pool_conf_open(pconf, pool_dynamic_location(), PO_RDWR) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL); return (res); } pool = pool_get_pool(pconf, tmp_name); pset = pool_get_resource(pconf, "pset", tmp_name); if (pool == NULL && pset == NULL) { /* no tmp pool configured */ goto done; } /* * If an existing tmp pool for this zone is configured with the proper * settings, then the tmp pool is valid. */ if (get_running_tmp_pset(pconf, pool, pset, &pset_current) == PO_SUCCESS && strcmp(pset_tab->zone_ncpu_min, pset_current.zone_ncpu_min) == 0 && strcmp(pset_tab->zone_ncpu_max, pset_current.zone_ncpu_max) == 0 && strcmp(pset_tab->zone_importance, pset_current.zone_importance) == 0) { *exists = B_TRUE; } else { /* * An out-of-date tmp pool configuration exists. Delete it * so that we can create the correct tmp pool config. */ if (pset != NULL && pool_resource_destroy(pconf, pset) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL); goto done; } if (pool != NULL && pool_destroy(pconf, pool) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL); goto done; } /* commit dynamic config */ if (pool_conf_commit(pconf, 0) != PO_SUCCESS) res = zerr_pool(pool_err, err_size, Z_POOL); } done: (void) pool_conf_close(pconf); return (res); } /* * Destroy any existing tmp pool. */ int zonecfg_destroy_tmp_pool(char *zone_name, char *pool_err, int err_size) { int status; int res = Z_OK; pool_conf_t *pconf; pool_t *pool; pool_resource_t *pset; char tmp_name[MAX_TMP_POOL_NAME]; /* if pools not enabled then nothing to do */ if (pool_get_status(&status) != PO_SUCCESS || status != POOL_ENABLED) return (Z_OK); if ((pconf = pool_conf_alloc()) == NULL) return (zerr_pool(pool_err, err_size, Z_POOL)); (void) snprintf(tmp_name, sizeof (tmp_name), TMP_POOL_NAME, zone_name); if (pool_conf_open(pconf, pool_dynamic_location(), PO_RDWR) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL); pool_conf_free(pconf); return (res); } pool = pool_get_pool(pconf, tmp_name); pset = pool_get_resource(pconf, "pset", tmp_name); if (pool == NULL && pset == NULL) { /* nothing to destroy, we're done */ goto done; } if (pset != NULL && pool_resource_destroy(pconf, pset) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL); goto done; } if (pool != NULL && pool_destroy(pconf, pool) != PO_SUCCESS) { res = zerr_pool(pool_err, err_size, Z_POOL); goto done; } /* commit dynamic config */ if (pool_conf_commit(pconf, 0) != PO_SUCCESS) res = zerr_pool(pool_err, err_size, Z_POOL); done: (void) pool_conf_close(pconf); pool_conf_free(pconf); return (res); } /* * Attempt to bind to a tmp pool for this zone. If there is no tmp pool * configured, we just return Z_OK. * * We either attempt to create the tmp pool for this zone or rebind to an * existing tmp pool for this zone. * * Rebinding is used when a zone with a tmp pool reboots so that we don't have * to recreate the tmp pool. To do this we need to be sure we work correctly * for the following cases: * * - there is an existing, properly configured tmp pool. * - zonecfg added tmp pool after zone was booted, must now create. * - zonecfg updated tmp pool config after zone was booted, in this case * we destroy the old tmp pool and create a new one. */ int zonecfg_bind_tmp_pool(zone_dochandle_t handle, zoneid_t zoneid, char *pool_err, int err_size) { struct zone_psettab pset_tab; int err; int status; pool_conf_t *pconf; boolean_t exists; char zone_name[ZONENAME_MAX]; char tmp_name[MAX_TMP_POOL_NAME]; (void) getzonenamebyid(zoneid, zone_name, sizeof (zone_name)); err = zonecfg_lookup_pset(handle, &pset_tab); /* if no temporary pool configured, we're done */ if (err == Z_NO_ENTRY) return (Z_OK); /* * importance might not have a value but we need to validate it here, * so set the default. */ if (pset_tab.zone_importance[0] == '\0') (void) strlcpy(pset_tab.zone_importance, "1", sizeof (pset_tab.zone_importance)); /* if pools not enabled, enable them now */ if (pool_get_status(&status) != PO_SUCCESS || status != POOL_ENABLED) { if (pool_set_status(POOL_ENABLED) != PO_SUCCESS) return (Z_POOL_ENABLE); } if ((pconf = pool_conf_alloc()) == NULL) return (zerr_pool(pool_err, err_size, Z_POOL)); (void) snprintf(tmp_name, sizeof (tmp_name), TMP_POOL_NAME, zone_name); /* * Check if a valid tmp pool/pset already exists. If so, we just * reuse it. */ if ((err = verify_del_tmp_pool(pconf, tmp_name, pool_err, err_size, &pset_tab, &exists)) != Z_OK) { pool_conf_free(pconf); return (err); } if (!exists) err = create_tmp_pool(pool_err, err_size, pconf, tmp_name, &pset_tab); pool_conf_free(pconf); if (err != Z_OK) return (err); /* Bind the zone to the pool. */ if (pool_set_binding(tmp_name, P_ZONEID, zoneid) != PO_SUCCESS) return (zerr_pool(pool_err, err_size, Z_POOL_BIND)); return (Z_OK); } /* * Attempt to bind to a permanent pool for this zone. If there is no * permanent pool configured, we just return Z_OK. */ int zonecfg_bind_pool(zone_dochandle_t handle, zoneid_t zoneid, char *pool_err, int err_size) { pool_conf_t *poolconf; pool_t *pool; char poolname[MAXPATHLEN]; int status; int error; /* * Find the pool mentioned in the zone configuration, and bind to it. */ error = zonecfg_get_pool(handle, poolname, sizeof (poolname)); if (error == Z_NO_ENTRY || (error == Z_OK && strlen(poolname) == 0)) { /* * The property is not set on the zone, so the pool * should be bound to the default pool. But that's * already done by the kernel, so we can just return. */ return (Z_OK); } if (error != Z_OK) { /* * Not an error, even though it shouldn't be happening. */ return (Z_OK); } /* * Don't do anything if pools aren't enabled. */ if (pool_get_status(&status) != PO_SUCCESS || status != POOL_ENABLED) return (Z_POOLS_NOT_ACTIVE); /* * Try to provide a sane error message if the requested pool doesn't * exist. */ if ((poolconf = pool_conf_alloc()) == NULL) return (zerr_pool(pool_err, err_size, Z_POOL)); if (pool_conf_open(poolconf, pool_dynamic_location(), PO_RDONLY) != PO_SUCCESS) { pool_conf_free(poolconf); return (zerr_pool(pool_err, err_size, Z_POOL)); } pool = pool_get_pool(poolconf, poolname); (void) pool_conf_close(poolconf); pool_conf_free(poolconf); if (pool == NULL) return (Z_NO_POOL); /* * Bind the zone to the pool. */ if (pool_set_binding(poolname, P_ZONEID, zoneid) != PO_SUCCESS) { /* if bind fails, return poolname for the error msg */ (void) strlcpy(pool_err, poolname, err_size); return (Z_POOL_BIND); } return (Z_OK); } static boolean_t svc_enabled(char *svc_name) { scf_simple_prop_t *prop; boolean_t found = B_FALSE; prop = scf_simple_prop_get(NULL, svc_name, SCF_PG_GENERAL, SCF_PROPERTY_ENABLED); if (scf_simple_prop_numvalues(prop) == 1 && *scf_simple_prop_next_boolean(prop) != 0) found = B_TRUE; scf_simple_prop_free(prop); return (found); } /* * If the zone has capped-memory, make sure the rcap service is enabled. */ int zonecfg_enable_rcapd(char *err, int size) { if (!svc_enabled(RCAP_SERVICE) && smf_enable_instance(RCAP_SERVICE, 0) == -1) { (void) strlcpy(err, scf_strerror(scf_error()), size); return (Z_SYSTEM); } return (Z_OK); } /* * Return true if pset has cpu range specified and poold is not enabled. */ boolean_t zonecfg_warn_poold(zone_dochandle_t handle) { struct zone_psettab pset_tab; int min, max; int err; err = zonecfg_lookup_pset(handle, &pset_tab); /* if no temporary pool configured, we're done */ if (err == Z_NO_ENTRY) return (B_FALSE); min = atoi(pset_tab.zone_ncpu_min); max = atoi(pset_tab.zone_ncpu_max); /* range not specified, no need for poold */ if (min == max) return (B_FALSE); /* we have a range, check if poold service is enabled */ if (svc_enabled(POOLD_SERVICE)) return (B_FALSE); return (B_TRUE); } static int get_pool_sched_class(char *poolname, char *class, int clsize) { int status; pool_conf_t *poolconf; pool_t *pool; pool_elem_t *pe; pool_value_t *pv = pool_value_alloc(); const char *sched_str; if (pool_get_status(&status) != PO_SUCCESS || status != POOL_ENABLED) return (Z_NO_POOL); if ((poolconf = pool_conf_alloc()) == NULL) return (Z_NO_POOL); if (pool_conf_open(poolconf, pool_dynamic_location(), PO_RDONLY) != PO_SUCCESS) { pool_conf_free(poolconf); return (Z_NO_POOL); } if ((pool = pool_get_pool(poolconf, poolname)) == NULL) { (void) pool_conf_close(poolconf); pool_conf_free(poolconf); return (Z_NO_POOL); } pe = pool_to_elem(poolconf, pool); if (pool_get_property(poolconf, pe, "pool.scheduler", pv) != POC_INVAL) { (void) pool_value_get_string(pv, &sched_str); if (strlcpy(class, sched_str, clsize) >= clsize) return (Z_TOO_BIG); } (void) pool_conf_close(poolconf); pool_conf_free(poolconf); return (Z_OK); } /* * Get the default scheduling class for the zone. This will either be the * class set on the zone's pool or the system default scheduling class. */ int zonecfg_get_dflt_sched_class(zone_dochandle_t handle, char *class, int clsize) { char poolname[MAXPATHLEN]; if (zonecfg_get_pool(handle, poolname, sizeof (poolname)) == Z_OK) { /* check if the zone's pool specified a sched class */ if (get_pool_sched_class(poolname, class, clsize) == Z_OK) return (Z_OK); } if (priocntl(0, 0, PC_GETDFLCL, class, (uint64_t)clsize) == -1) return (Z_TOO_BIG); return (Z_OK); } int zonecfg_setfsent(zone_dochandle_t handle) { return (zonecfg_setent(handle)); } int zonecfg_getfsent(zone_dochandle_t handle, struct zone_fstab *tabptr) { xmlNodePtr cur, options; char options_str[MAX_MNTOPT_STR]; int err; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (!xmlStrcmp(cur->name, DTD_ELEM_FS)) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_SPECIAL, tabptr->zone_fs_special, sizeof (tabptr->zone_fs_special))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_RAW, tabptr->zone_fs_raw, sizeof (tabptr->zone_fs_raw))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_DIR, tabptr->zone_fs_dir, sizeof (tabptr->zone_fs_dir))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_TYPE, tabptr->zone_fs_type, sizeof (tabptr->zone_fs_type))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } /* OK for options to be NULL */ tabptr->zone_fs_options = NULL; for (options = cur->xmlChildrenNode; options != NULL; options = options->next) { if (fetchprop(options, DTD_ATTR_NAME, options_str, sizeof (options_str)) != Z_OK) break; if (zonecfg_add_fs_option(tabptr, options_str) != Z_OK) break; } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_endfsent(zone_dochandle_t handle) { return (zonecfg_endent(handle)); } int zonecfg_setipdent(zone_dochandle_t handle) { return (zonecfg_setent(handle)); } int zonecfg_getipdent(zone_dochandle_t handle, struct zone_fstab *tabptr) { xmlNodePtr cur; int err; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (!xmlStrcmp(cur->name, DTD_ELEM_IPD)) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_DIR, tabptr->zone_fs_dir, sizeof (tabptr->zone_fs_dir))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_endipdent(zone_dochandle_t handle) { return (zonecfg_endent(handle)); } int zonecfg_setnwifent(zone_dochandle_t handle) { return (zonecfg_setent(handle)); } int zonecfg_getnwifent(zone_dochandle_t handle, struct zone_nwiftab *tabptr) { xmlNodePtr cur; int err; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (!xmlStrcmp(cur->name, DTD_ELEM_NET)) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_ADDRESS, tabptr->zone_nwif_address, sizeof (tabptr->zone_nwif_address))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_PHYSICAL, tabptr->zone_nwif_physical, sizeof (tabptr->zone_nwif_physical))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_DEFROUTER, tabptr->zone_nwif_defrouter, sizeof (tabptr->zone_nwif_defrouter))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_endnwifent(zone_dochandle_t handle) { return (zonecfg_endent(handle)); } int zonecfg_setdevent(zone_dochandle_t handle) { return (zonecfg_setent(handle)); } int zonecfg_getdevent(zone_dochandle_t handle, struct zone_devtab *tabptr) { xmlNodePtr cur; int err; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (!xmlStrcmp(cur->name, DTD_ELEM_DEVICE)) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_MATCH, tabptr->zone_dev_match, sizeof (tabptr->zone_dev_match))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_enddevent(zone_dochandle_t handle) { return (zonecfg_endent(handle)); } int zonecfg_setrctlent(zone_dochandle_t handle) { return (zonecfg_setent(handle)); } int zonecfg_getrctlent(zone_dochandle_t handle, struct zone_rctltab *tabptr) { xmlNodePtr cur, val; struct zone_rctlvaltab *valptr; int err; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (!xmlStrcmp(cur->name, DTD_ELEM_RCTL)) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_NAME, tabptr->zone_rctl_name, sizeof (tabptr->zone_rctl_name))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } tabptr->zone_rctl_valptr = NULL; for (val = cur->xmlChildrenNode; val != NULL; val = val->next) { valptr = (struct zone_rctlvaltab *)malloc( sizeof (struct zone_rctlvaltab)); if (valptr == NULL) return (Z_NOMEM); if (fetchprop(val, DTD_ATTR_PRIV, valptr->zone_rctlval_priv, sizeof (valptr->zone_rctlval_priv)) != Z_OK) break; if (fetchprop(val, DTD_ATTR_LIMIT, valptr->zone_rctlval_limit, sizeof (valptr->zone_rctlval_limit)) != Z_OK) break; if (fetchprop(val, DTD_ATTR_ACTION, valptr->zone_rctlval_action, sizeof (valptr->zone_rctlval_action)) != Z_OK) break; if (zonecfg_add_rctl_value(tabptr, valptr) != Z_OK) break; } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_endrctlent(zone_dochandle_t handle) { return (zonecfg_endent(handle)); } int zonecfg_setattrent(zone_dochandle_t handle) { return (zonecfg_setent(handle)); } int zonecfg_getattrent(zone_dochandle_t handle, struct zone_attrtab *tabptr) { xmlNodePtr cur; int err; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (!xmlStrcmp(cur->name, DTD_ELEM_ATTR)) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_NAME, tabptr->zone_attr_name, sizeof (tabptr->zone_attr_name))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_TYPE, tabptr->zone_attr_type, sizeof (tabptr->zone_attr_type))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_VALUE, tabptr->zone_attr_value, sizeof (tabptr->zone_attr_value))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_endattrent(zone_dochandle_t handle) { return (zonecfg_endent(handle)); } /* * The privileges available on the system and described in privileges(5) * fall into four categories with respect to non-global zones: * * Default set of privileges considered safe for all non-global * zones. These privileges are "safe" in the sense that a * privileged process in the zone cannot affect processes in any * other zone on the system. * * Set of privileges not currently permitted within a non-global * zone. These privileges are considered by default, "unsafe," * and include ones which affect global resources (such as the * system clock or physical memory) or are overly broad and cover * more than one mechanism in the system. In other cases, there * has not been sufficient virtualization in the parts of the * system the privilege covers to allow its use within a * non-global zone. * * Set of privileges required in order to get a zone booted and * init(1M) started. These cannot be removed from the zone's * privilege set. * * All other privileges are optional and are potentially useful for * processes executing inside a non-global zone. * * When privileges are added to the system, a determination needs to be * made as to which category the privilege belongs to. Ideally, * privileges should be fine-grained enough and the mechanisms they cover * virtualized enough so that they can be made available to non-global * zones. */ /* * Define some of the tokens that priv_str_to_set(3C) recognizes. Since * the privilege string separator can be any character, although it is * usually a comma character, define these here as well in the event that * they change or are augmented in the future. */ #define BASIC_TOKEN "basic" #define DEFAULT_TOKEN "default" #define ZONE_TOKEN "zone" #define TOKEN_PRIV_CHAR ',' #define TOKEN_PRIV_STR "," typedef struct priv_node { struct priv_node *pn_next; /* Next privilege */ char *pn_priv; /* Privileges name */ } priv_node_t; /* Privileges lists can differ across brands */ typedef struct priv_lists { /* Privileges considered safe for all non-global zones of a brand */ struct priv_node *pl_default; /* Privileges not permitted for all non-global zones of a brand */ struct priv_node *pl_prohibited; /* Privileges required for all non-global zones of a brand */ struct priv_node *pl_required; /* * ip-type of the zone these privileges lists apply to. * It is used to pass ip-type to the callback function, * priv_lists_cb, which has no way of getting the ip-type. */ const char *pl_iptype; } priv_lists_t; static int priv_lists_cb(void *data, priv_iter_t *priv_iter) { priv_lists_t *plp = (priv_lists_t *)data; priv_node_t *pnp; /* Skip this privilege if ip-type does not match */ if ((strcmp(priv_iter->pi_iptype, "all") != 0) && (strcmp(priv_iter->pi_iptype, plp->pl_iptype) != 0)) return (0); /* Allocate a new priv list node. */ if ((pnp = malloc(sizeof (*pnp))) == NULL) return (-1); if ((pnp->pn_priv = strdup(priv_iter->pi_name)) == NULL) { free(pnp); return (-1); } /* Insert the new priv list node into the right list */ if (strcmp(priv_iter->pi_set, "default") == 0) { pnp->pn_next = plp->pl_default; plp->pl_default = pnp; } else if (strcmp(priv_iter->pi_set, "prohibited") == 0) { pnp->pn_next = plp->pl_prohibited; plp->pl_prohibited = pnp; } else if (strcmp(priv_iter->pi_set, "required") == 0) { pnp->pn_next = plp->pl_required; plp->pl_required = pnp; } else { free(pnp->pn_priv); free(pnp); return (-1); } return (0); } static void priv_lists_destroy(priv_lists_t *plp) { priv_node_t *pnp; assert(plp != NULL); while ((pnp = plp->pl_default) != NULL) { plp->pl_default = pnp->pn_next; free(pnp->pn_priv); free(pnp); } while ((pnp = plp->pl_prohibited) != NULL) { plp->pl_prohibited = pnp->pn_next; free(pnp->pn_priv); free(pnp); } while ((pnp = plp->pl_required) != NULL) { plp->pl_required = pnp->pn_next; free(pnp->pn_priv); free(pnp); } free(plp); } static int priv_lists_create(zone_dochandle_t handle, char *brand, priv_lists_t **plpp, const char *curr_iptype) { priv_lists_t *plp; brand_handle_t bh; char brand_str[MAXNAMELEN]; /* handle or brand must be set, but never both */ assert((handle != NULL) || (brand != NULL)); assert((handle == NULL) || (brand == NULL)); if (handle != NULL) { brand = brand_str; if (zonecfg_get_brand(handle, brand, sizeof (brand_str)) != 0) return (Z_BRAND_ERROR); } if ((bh = brand_open(brand)) == NULL) return (Z_BRAND_ERROR); if ((plp = calloc(1, sizeof (priv_lists_t))) == NULL) { brand_close(bh); return (Z_NOMEM); } plp->pl_iptype = curr_iptype; /* construct the privilege lists */ if (brand_config_iter_privilege(bh, priv_lists_cb, plp) != 0) { priv_lists_destroy(plp); brand_close(bh); return (Z_BRAND_ERROR); } brand_close(bh); *plpp = plp; return (Z_OK); } static int get_default_privset(priv_set_t *privs, priv_lists_t *plp) { priv_node_t *pnp; priv_set_t *basic; basic = priv_str_to_set(BASIC_TOKEN, TOKEN_PRIV_STR, NULL); if (basic == NULL) return (errno == ENOMEM ? Z_NOMEM : Z_INVAL); priv_union(basic, privs); priv_freeset(basic); for (pnp = plp->pl_default; pnp != NULL; pnp = pnp->pn_next) { if (priv_addset(privs, pnp->pn_priv) != 0) return (Z_INVAL); } return (Z_OK); } int zonecfg_default_brand(char *brand, size_t brandsize) { zone_dochandle_t handle; int ret; if ((handle = zonecfg_init_handle()) == NULL) return (Z_NOMEM); if ((ret = zonecfg_get_handle("SUNWdefault", handle)) == Z_OK) { ret = i_zonecfg_get_brand(handle, brand, brandsize, B_TRUE); zonecfg_fini_handle(handle); return (ret); } return (ret); } int zonecfg_default_privset(priv_set_t *privs, const char *curr_iptype) { priv_lists_t *plp; char buf[MAXNAMELEN]; int ret; if ((ret = zonecfg_default_brand(buf, sizeof (buf))) != Z_OK) return (ret); if ((ret = priv_lists_create(NULL, buf, &plp, curr_iptype)) != Z_OK) return (ret); ret = get_default_privset(privs, plp); priv_lists_destroy(plp); return (ret); } void append_priv_token(char *priv, char *str, size_t strlen) { if (*str != '\0') (void) strlcat(str, TOKEN_PRIV_STR, strlen); (void) strlcat(str, priv, strlen); } /* * Verify that the supplied string is a valid privilege limit set for a * non-global zone. This string must not only be acceptable to * priv_str_to_set(3C) which parses it, but it also must resolve to a * privilege set that includes certain required privileges and lacks * certain prohibited privileges. */ static int verify_privset(char *privbuf, priv_set_t *privs, char **privname, boolean_t add_default, priv_lists_t *plp) { priv_node_t *pnp; char *tmp, *cp, *lasts; size_t len; priv_set_t *mergeset; const char *token; /* * The verification of the privilege string occurs in several * phases. In the first phase, the supplied string is scanned for * the ZONE_TOKEN token which is not support as part of the * "limitpriv" property. * * Duplicate the supplied privilege string since strtok_r(3C) * tokenizes its input by null-terminating the tokens. */ if ((tmp = strdup(privbuf)) == NULL) return (Z_NOMEM); for (cp = strtok_r(tmp, TOKEN_PRIV_STR, &lasts); cp != NULL; cp = strtok_r(NULL, TOKEN_PRIV_STR, &lasts)) { if (strcmp(cp, ZONE_TOKEN) == 0) { free(tmp); if ((*privname = strdup(ZONE_TOKEN)) == NULL) return (Z_NOMEM); else return (Z_PRIV_UNKNOWN); } } free(tmp); if (add_default) { /* * If DEFAULT_TOKEN was specified, a string needs to be * built containing the privileges from the default, safe * set along with those of the "limitpriv" property. */ len = strlen(privbuf) + sizeof (BASIC_TOKEN) + 2; for (pnp = plp->pl_default; pnp != NULL; pnp = pnp->pn_next) len += strlen(pnp->pn_priv) + 1; tmp = alloca(len); *tmp = '\0'; append_priv_token(BASIC_TOKEN, tmp, len); for (pnp = plp->pl_default; pnp != NULL; pnp = pnp->pn_next) append_priv_token(pnp->pn_priv, tmp, len); (void) strlcat(tmp, TOKEN_PRIV_STR, len); (void) strlcat(tmp, privbuf, len); } else { tmp = privbuf; } /* * In the next phase, attempt to convert the merged privilege * string into a privilege set. In the case of an error, either * there was a memory allocation failure or there was an invalid * privilege token in the string. In either case, return an * appropriate error code but in the event of an invalid token, * allocate a string containing its name and return that back to * the caller. */ mergeset = priv_str_to_set(tmp, TOKEN_PRIV_STR, &token); if (mergeset == NULL) { if (token == NULL) return (Z_NOMEM); if ((cp = strchr(token, TOKEN_PRIV_CHAR)) != NULL) *cp = '\0'; if ((*privname = strdup(token)) == NULL) return (Z_NOMEM); else return (Z_PRIV_UNKNOWN); } /* * Next, verify that none of the prohibited zone privileges are * present in the merged privilege set. */ for (pnp = plp->pl_prohibited; pnp != NULL; pnp = pnp->pn_next) { if (priv_ismember(mergeset, pnp->pn_priv)) { priv_freeset(mergeset); if ((*privname = strdup(pnp->pn_priv)) == NULL) return (Z_NOMEM); else return (Z_PRIV_PROHIBITED); } } /* * Finally, verify that all of the required zone privileges are * present in the merged privilege set. */ for (pnp = plp->pl_required; pnp != NULL; pnp = pnp->pn_next) { if (!priv_ismember(mergeset, pnp->pn_priv)) { priv_freeset(mergeset); if ((*privname = strdup(pnp->pn_priv)) == NULL) return (Z_NOMEM); else return (Z_PRIV_REQUIRED); } } priv_copyset(mergeset, privs); priv_freeset(mergeset); return (Z_OK); } /* * Fill in the supplied privilege set with either the default, safe set of * privileges suitable for a non-global zone, or one based on the * "limitpriv" property in the zone's configuration. * * In the event of an invalid privilege specification in the * configuration, a string is allocated and returned containing the * "privilege" causing the issue. It is the caller's responsibility to * free this memory when it is done with it. */ int zonecfg_get_privset(zone_dochandle_t handle, priv_set_t *privs, char **privname) { priv_lists_t *plp; char *cp, *limitpriv = NULL; int err, limitlen; zone_iptype_t iptype; const char *curr_iptype; /* * Attempt to lookup the "limitpriv" property. If it does not * exist or matches the string DEFAULT_TOKEN exactly, then the * default, safe privilege set is returned. */ if ((err = zonecfg_get_limitpriv(handle, &limitpriv)) != Z_OK) return (err); if ((err = zonecfg_get_iptype(handle, &iptype)) != Z_OK) return (err); switch (iptype) { case ZS_SHARED: curr_iptype = "shared"; break; case ZS_EXCLUSIVE: curr_iptype = "exclusive"; break; } if ((err = priv_lists_create(handle, NULL, &plp, curr_iptype)) != Z_OK) return (err); limitlen = strlen(limitpriv); if (limitlen == 0 || strcmp(limitpriv, DEFAULT_TOKEN) == 0) { free(limitpriv); err = get_default_privset(privs, plp); priv_lists_destroy(plp); return (err); } /* * Check if the string DEFAULT_TOKEN is the first token in a list * of privileges. */ cp = strchr(limitpriv, TOKEN_PRIV_CHAR); if (cp != NULL && strncmp(limitpriv, DEFAULT_TOKEN, cp - limitpriv) == 0) err = verify_privset(cp + 1, privs, privname, B_TRUE, plp); else err = verify_privset(limitpriv, privs, privname, B_FALSE, plp); free(limitpriv); priv_lists_destroy(plp); return (err); } int zone_get_zonepath(char *zone_name, char *zonepath, size_t rp_sz) { zone_dochandle_t handle; boolean_t found = B_FALSE; struct zoneent *ze; FILE *cookie; int err; char *cp; if (zone_name == NULL) return (Z_INVAL); (void) strlcpy(zonepath, zonecfg_root, rp_sz); cp = zonepath + strlen(zonepath); while (cp > zonepath && cp[-1] == '/') *--cp = '\0'; if (strcmp(zone_name, GLOBAL_ZONENAME) == 0) { if (zonepath[0] == '\0') (void) strlcpy(zonepath, "/", rp_sz); return (Z_OK); } /* * First check the index file. Because older versions did not have * a copy of the zone path, allow for it to be zero length, in which * case we ignore this result and fall back to the XML files. */ cookie = setzoneent(); while ((ze = getzoneent_private(cookie)) != NULL) { if (strcmp(ze->zone_name, zone_name) == 0) { found = B_TRUE; if (ze->zone_path[0] != '\0') (void) strlcpy(cp, ze->zone_path, rp_sz - (cp - zonepath)); } free(ze); if (found) break; } endzoneent(cookie); if (found && *cp != '\0') return (Z_OK); /* Fall back to the XML files. */ if ((handle = zonecfg_init_handle()) == NULL) return (Z_NOMEM); /* * Check the snapshot first: if a zone is running, its zonepath * may have changed. */ if (zonecfg_get_snapshot_handle(zone_name, handle) != Z_OK) { if ((err = zonecfg_get_handle(zone_name, handle)) != Z_OK) { zonecfg_fini_handle(handle); return (err); } } err = zonecfg_get_zonepath(handle, zonepath, rp_sz); zonecfg_fini_handle(handle); return (err); } int zone_get_rootpath(char *zone_name, char *rootpath, size_t rp_sz) { int err; /* This function makes sense for non-global zones only. */ if (strcmp(zone_name, GLOBAL_ZONENAME) == 0) return (Z_BOGUS_ZONE_NAME); if ((err = zone_get_zonepath(zone_name, rootpath, rp_sz)) != Z_OK) return (err); if (strlcat(rootpath, "/root", rp_sz) >= rp_sz) return (Z_TOO_BIG); return (Z_OK); } int zone_get_brand(char *zone_name, char *brandname, size_t rp_sz) { int err; zone_dochandle_t handle; char myzone[MAXNAMELEN]; int myzoneid = getzoneid(); /* * If we are not in the global zone, then we don't have the zone * .xml files with the brand name available. Thus, we are going to * have to ask the kernel for the information. */ if (myzoneid != GLOBAL_ZONEID) { if (is_system_labeled()) { (void) strlcpy(brandname, NATIVE_BRAND_NAME, rp_sz); return (Z_OK); } if (zone_getattr(myzoneid, ZONE_ATTR_NAME, myzone, sizeof (myzone)) < 0) return (Z_NO_ZONE); if (!zonecfg_is_scratch(myzone)) { if (strncmp(zone_name, myzone, MAXNAMELEN) != 0) return (Z_NO_ZONE); } err = zone_getattr(myzoneid, ZONE_ATTR_BRAND, brandname, rp_sz); if (err < 0) return ((errno == EFAULT) ? Z_TOO_BIG : Z_INVAL); return (Z_OK); } if (strcmp(zone_name, "global") == 0) return (zonecfg_default_brand(brandname, rp_sz)); if ((handle = zonecfg_init_handle()) == NULL) return (Z_NOMEM); err = zonecfg_get_handle((char *)zone_name, handle); if (err == Z_OK) err = zonecfg_get_brand(handle, brandname, rp_sz); zonecfg_fini_handle(handle); return (err); } /* * Return the appropriate root for the active /dev. * For normal zone, the path is $ZONEPATH/root; * for scratch zone, the dev path is $ZONEPATH/lu. */ int zone_get_devroot(char *zone_name, char *devroot, size_t rp_sz) { int err; char *suffix; zone_state_t state; /* This function makes sense for non-global zones only. */ if (strcmp(zone_name, GLOBAL_ZONENAME) == 0) return (Z_BOGUS_ZONE_NAME); if ((err = zone_get_zonepath(zone_name, devroot, rp_sz)) != Z_OK) return (err); if (zone_get_state(zone_name, &state) == Z_OK && state == ZONE_STATE_MOUNTED) suffix = "/lu"; else suffix = "/root"; if (strlcat(devroot, suffix, rp_sz) >= rp_sz) return (Z_TOO_BIG); return (Z_OK); } static zone_state_t kernel_state_to_user_state(zoneid_t zoneid, zone_status_t kernel_state) { char zoneroot[MAXPATHLEN]; size_t zlen; assert(kernel_state <= ZONE_MAX_STATE); switch (kernel_state) { case ZONE_IS_UNINITIALIZED: case ZONE_IS_INITIALIZED: /* The kernel will not return these two states */ return (ZONE_STATE_READY); case ZONE_IS_READY: /* * If the zone's root is mounted on $ZONEPATH/lu, then * it's a mounted scratch zone. */ if (zone_getattr(zoneid, ZONE_ATTR_ROOT, zoneroot, sizeof (zoneroot)) >= 0) { zlen = strlen(zoneroot); if (zlen > 3 && strcmp(zoneroot + zlen - 3, "/lu") == 0) return (ZONE_STATE_MOUNTED); } return (ZONE_STATE_READY); case ZONE_IS_BOOTING: case ZONE_IS_RUNNING: return (ZONE_STATE_RUNNING); case ZONE_IS_SHUTTING_DOWN: case ZONE_IS_EMPTY: return (ZONE_STATE_SHUTTING_DOWN); case ZONE_IS_DOWN: case ZONE_IS_DYING: case ZONE_IS_DEAD: default: return (ZONE_STATE_DOWN); } /* NOTREACHED */ } int zone_get_state(char *zone_name, zone_state_t *state_num) { zone_status_t status; zoneid_t zone_id; struct zoneent *ze; boolean_t found = B_FALSE; FILE *cookie; char kernzone[ZONENAME_MAX]; FILE *fp; if (zone_name == NULL) return (Z_INVAL); /* * If we're looking at an alternate root, then we need to query the * kernel using the scratch zone name. */ zone_id = -1; if (*zonecfg_root != '\0' && !zonecfg_is_scratch(zone_name)) { if ((fp = zonecfg_open_scratch("", B_FALSE)) != NULL) { if (zonecfg_find_scratch(fp, zone_name, zonecfg_root, kernzone, sizeof (kernzone)) == 0) zone_id = getzoneidbyname(kernzone); zonecfg_close_scratch(fp); } } else { zone_id = getzoneidbyname(zone_name); } /* check to see if zone is running */ if (zone_id != -1 && zone_getattr(zone_id, ZONE_ATTR_STATUS, &status, sizeof (status)) >= 0) { *state_num = kernel_state_to_user_state(zone_id, status); return (Z_OK); } cookie = setzoneent(); while ((ze = getzoneent_private(cookie)) != NULL) { if (strcmp(ze->zone_name, zone_name) == 0) { found = B_TRUE; *state_num = ze->zone_state; } free(ze); if (found) break; } endzoneent(cookie); return ((found) ? Z_OK : Z_NO_ZONE); } int zone_set_state(char *zone, zone_state_t state) { struct zoneent ze; if (state != ZONE_STATE_CONFIGURED && state != ZONE_STATE_INSTALLED && state != ZONE_STATE_INCOMPLETE) return (Z_INVAL); bzero(&ze, sizeof (ze)); (void) strlcpy(ze.zone_name, zone, sizeof (ze.zone_name)); ze.zone_state = state; (void) strlcpy(ze.zone_path, "", sizeof (ze.zone_path)); return (putzoneent(&ze, PZE_MODIFY)); } /* * Get id (if any) for specified zone. There are four possible outcomes: * - If the string corresponds to the numeric id of an active (booted) * zone, sets *zip to the zone id and returns 0. * - If the string corresponds to the name of an active (booted) zone, * sets *zip to the zone id and returns 0. * - If the string is a name in the configuration but is not booted, * sets *zip to ZONE_ID_UNDEFINED and returns 0. * - Otherwise, leaves *zip unchanged and returns -1. * * This function acts as an auxiliary filter on the function of the same * name in libc; the linker binds to this version if libzonecfg exists, * and the libc version if it doesn't. Any changes to this version of * the function should probably be reflected in the libc version as well. */ int zone_get_id(const char *str, zoneid_t *zip) { zone_dochandle_t hdl; zoneid_t zoneid; char *cp; int err; /* first try looking for active zone by id */ errno = 0; zoneid = (zoneid_t)strtol(str, &cp, 0); if (errno == 0 && cp != str && *cp == '\0' && getzonenamebyid(zoneid, NULL, 0) != -1) { *zip = zoneid; return (0); } /* then look for active zone by name */ if ((zoneid = getzoneidbyname(str)) != -1) { *zip = zoneid; return (0); } /* if in global zone, try looking up name in configuration database */ if (getzoneid() != GLOBAL_ZONEID || (hdl = zonecfg_init_handle()) == NULL) return (-1); if (zonecfg_get_handle(str, hdl) == Z_OK) { /* zone exists but isn't active */ *zip = ZONE_ID_UNDEFINED; err = 0; } else { err = -1; } zonecfg_fini_handle(hdl); return (err); } char * zone_state_str(zone_state_t state_num) { switch (state_num) { case ZONE_STATE_CONFIGURED: return (ZONE_STATE_STR_CONFIGURED); case ZONE_STATE_INCOMPLETE: return (ZONE_STATE_STR_INCOMPLETE); case ZONE_STATE_INSTALLED: return (ZONE_STATE_STR_INSTALLED); case ZONE_STATE_READY: return (ZONE_STATE_STR_READY); case ZONE_STATE_MOUNTED: return (ZONE_STATE_STR_MOUNTED); case ZONE_STATE_RUNNING: return (ZONE_STATE_STR_RUNNING); case ZONE_STATE_SHUTTING_DOWN: return (ZONE_STATE_STR_SHUTTING_DOWN); case ZONE_STATE_DOWN: return (ZONE_STATE_STR_DOWN); default: return ("unknown"); } } /* * Given a UUID value, find an associated zone name. This is intended to be * used by callers who set up some 'default' name (corresponding to the * expected name for the zone) in the zonename buffer, and thus the function * doesn't touch this buffer on failure. */ int zonecfg_get_name_by_uuid(const uuid_t uuidin, char *zonename, size_t namelen) { FILE *fp; struct zoneent *ze; uchar_t *uuid; /* * A small amount of subterfuge via casts is necessary here because * libuuid doesn't use const correctly, but we don't want to export * this brokenness to our clients. */ uuid = (uchar_t *)uuidin; if (uuid_is_null(uuid)) return (Z_NO_ZONE); if ((fp = setzoneent()) == NULL) return (Z_NO_ZONE); while ((ze = getzoneent_private(fp)) != NULL) { if (uuid_compare(uuid, ze->zone_uuid) == 0) break; free(ze); } endzoneent(fp); if (ze != NULL) { (void) strlcpy(zonename, ze->zone_name, namelen); free(ze); return (Z_OK); } else { return (Z_NO_ZONE); } } /* * Given a zone name, get its UUID. Returns a "NULL" UUID value if the zone * exists but the file doesn't have a value set yet. Returns an error if the * zone cannot be located. */ int zonecfg_get_uuid(const char *zonename, uuid_t uuid) { FILE *fp; struct zoneent *ze; if ((fp = setzoneent()) == NULL) return (Z_NO_ZONE); while ((ze = getzoneent_private(fp)) != NULL) { if (strcmp(ze->zone_name, zonename) == 0) break; free(ze); } endzoneent(fp); if (ze != NULL) { uuid_copy(uuid, ze->zone_uuid); free(ze); return (Z_OK); } else { return (Z_NO_ZONE); } } /* * File-system convenience functions. */ boolean_t zonecfg_valid_fs_type(const char *type) { /* * We already know which FS types don't work. */ if (strcmp(type, "proc") == 0 || strcmp(type, "mntfs") == 0 || strcmp(type, "autofs") == 0 || strncmp(type, "nfs", sizeof ("nfs") - 1) == 0 || strcmp(type, "cachefs") == 0) return (B_FALSE); /* * The caller may do more detailed verification to make sure other * aspects of this filesystem type make sense. */ return (B_TRUE); } /* * Generally uninteresting rctl convenience functions. */ int zonecfg_construct_rctlblk(const struct zone_rctlvaltab *rctlval, rctlblk_t *rctlblk) { unsigned long long ull; char *endp; rctl_priv_t priv; rctl_qty_t limit; uint_t action; /* Get the privilege */ if (strcmp(rctlval->zone_rctlval_priv, "basic") == 0) { priv = RCPRIV_BASIC; } else if (strcmp(rctlval->zone_rctlval_priv, "privileged") == 0) { priv = RCPRIV_PRIVILEGED; } else { /* Invalid privilege */ return (Z_INVAL); } /* deal with negative input; strtoull(3c) doesn't do what we want */ if (rctlval->zone_rctlval_limit[0] == '-') return (Z_INVAL); /* Get the limit */ errno = 0; ull = strtoull(rctlval->zone_rctlval_limit, &endp, 0); if (errno != 0 || *endp != '\0') { /* parse failed */ return (Z_INVAL); } limit = (rctl_qty_t)ull; /* Get the action */ if (strcmp(rctlval->zone_rctlval_action, "none") == 0) { action = RCTL_LOCAL_NOACTION; } else if (strcmp(rctlval->zone_rctlval_action, "signal") == 0) { action = RCTL_LOCAL_SIGNAL; } else if (strcmp(rctlval->zone_rctlval_action, "deny") == 0) { action = RCTL_LOCAL_DENY; } else { /* Invalid Action */ return (Z_INVAL); } rctlblk_set_local_action(rctlblk, action, 0); rctlblk_set_privilege(rctlblk, priv); rctlblk_set_value(rctlblk, limit); return (Z_OK); } static int rctl_check(const char *rctlname, void *arg) { const char *attrname = arg; /* * Returning 1 here is our signal to zonecfg_is_rctl() that it is * indeed an rctl name recognized by the system. */ return (strcmp(rctlname, attrname) == 0 ? 1 : 0); } boolean_t zonecfg_is_rctl(const char *name) { return (rctl_walk(rctl_check, (void *)name) == 1); } boolean_t zonecfg_valid_rctlname(const char *name) { const char *c; if (strncmp(name, "zone.", sizeof ("zone.") - 1) != 0) return (B_FALSE); if (strlen(name) == sizeof ("zone.") - 1) return (B_FALSE); for (c = name + sizeof ("zone.") - 1; *c != '\0'; c++) { if (!isalpha(*c) && *c != '-') return (B_FALSE); } return (B_TRUE); } boolean_t zonecfg_valid_rctlblk(const rctlblk_t *rctlblk) { rctl_priv_t priv = rctlblk_get_privilege((rctlblk_t *)rctlblk); uint_t action = rctlblk_get_local_action((rctlblk_t *)rctlblk, NULL); if (priv != RCPRIV_PRIVILEGED) return (B_FALSE); if (action != RCTL_LOCAL_NOACTION && action != RCTL_LOCAL_DENY) return (B_FALSE); return (B_TRUE); } boolean_t zonecfg_valid_rctl(const char *name, const rctlblk_t *rctlblk) { rctlblk_t *current, *next; rctl_qty_t limit = rctlblk_get_value((rctlblk_t *)rctlblk); uint_t action = rctlblk_get_local_action((rctlblk_t *)rctlblk, NULL); uint_t global_flags; if (!zonecfg_valid_rctlblk(rctlblk)) return (B_FALSE); if (!zonecfg_valid_rctlname(name)) return (B_FALSE); current = alloca(rctlblk_size()); if (getrctl(name, NULL, current, RCTL_FIRST) != 0) return (B_TRUE); /* not an rctl on this system */ /* * Make sure the proposed value isn't greater than the current system * value. */ next = alloca(rctlblk_size()); while (rctlblk_get_privilege(current) != RCPRIV_SYSTEM) { rctlblk_t *tmp; if (getrctl(name, current, next, RCTL_NEXT) != 0) return (B_FALSE); /* shouldn't happen */ tmp = current; current = next; next = tmp; } if (limit > rctlblk_get_value(current)) return (B_FALSE); /* * Make sure the proposed action is allowed. */ global_flags = rctlblk_get_global_flags(current); if ((global_flags & RCTL_GLOBAL_DENY_NEVER) && action == RCTL_LOCAL_DENY) return (B_FALSE); if ((global_flags & RCTL_GLOBAL_DENY_ALWAYS) && action == RCTL_LOCAL_NOACTION) return (B_FALSE); return (B_TRUE); } /* * There is always a race condition between reading the initial copy of * a zones state and its state changing. We address this by providing * zonecfg_notify_critical_enter and zonecfg_noticy_critical_exit functions. * When zonecfg_critical_enter is called, sets the state field to LOCKED * and aquires biglock. Biglock protects against other threads executing * critical_enter and the state field protects against state changes during * the critical period. * * If any state changes occur, zn_cb will set the failed field of the znotify * structure. This will cause the critical_exit function to re-lock the * channel and return an error. Since evsnts may be delayed, the critical_exit * function "flushes" the queue by putting an event on the queue and waiting for * zn_cb to notify critical_exit that it received the ping event. */ static const char * string_get_tok(const char *in, char delim, int num) { int i = 0; for (; i < num; in++) { if (*in == delim) i++; if (*in == 0) return (NULL); } return (in); } static boolean_t is_ping(sysevent_t *ev) { if (strcmp(sysevent_get_subclass_name(ev), ZONE_EVENT_PING_SUBCLASS) == 0) { return (B_TRUE); } else { return (B_FALSE); } } static boolean_t is_my_ping(sysevent_t *ev) { const char *sender; char mypid[sizeof (pid_t) * 3 + 1]; (void) snprintf(mypid, sizeof (mypid), "%i", getpid()); sender = string_get_tok(sysevent_get_pub(ev), ':', 3); if (sender == NULL) return (B_FALSE); if (strcmp(sender, mypid) != 0) return (B_FALSE); return (B_TRUE); } static int do_callback(struct znotify *zevtchan, sysevent_t *ev) { nvlist_t *l; int zid; char *zonename; char *newstate; char *oldstate; int ret; hrtime_t when; if (strcmp(sysevent_get_subclass_name(ev), ZONE_EVENT_STATUS_SUBCLASS) == 0) { if (sysevent_get_attr_list(ev, &l) != 0) { if (errno == ENOMEM) { zevtchan->zn_failure_count++; return (EAGAIN); } return (0); } ret = 0; if ((nvlist_lookup_string(l, ZONE_CB_NAME, &zonename) == 0) && (nvlist_lookup_string(l, ZONE_CB_NEWSTATE, &newstate) == 0) && (nvlist_lookup_string(l, ZONE_CB_OLDSTATE, &oldstate) == 0) && (nvlist_lookup_uint64(l, ZONE_CB_TIMESTAMP, (uint64_t *)&when) == 0) && (nvlist_lookup_int32(l, ZONE_CB_ZONEID, &zid) == 0)) { ret = zevtchan->zn_callback(zonename, zid, newstate, oldstate, when, zevtchan->zn_private); } zevtchan->zn_failure_count = 0; nvlist_free(l); return (ret); } else { /* * We have received an event in an unknown subclass. Ignore. */ zevtchan->zn_failure_count = 0; return (0); } } static int zn_cb(sysevent_t *ev, void *p) { struct znotify *zevtchan = p; int error; (void) pthread_mutex_lock(&(zevtchan->zn_mutex)); if (is_ping(ev) && !is_my_ping(ev)) { (void) pthread_mutex_unlock((&zevtchan->zn_mutex)); return (0); } if (zevtchan->zn_state == ZN_LOCKED) { assert(!is_ping(ev)); zevtchan->zn_failed = B_TRUE; (void) pthread_mutex_unlock(&(zevtchan->zn_mutex)); return (0); } if (zevtchan->zn_state == ZN_PING_INFLIGHT) { if (is_ping(ev)) { zevtchan->zn_state = ZN_PING_RECEIVED; (void) pthread_cond_signal(&(zevtchan->zn_cond)); (void) pthread_mutex_unlock(&(zevtchan->zn_mutex)); return (0); } else { zevtchan->zn_failed = B_TRUE; (void) pthread_mutex_unlock(&(zevtchan->zn_mutex)); return (0); } } if (zevtchan->zn_state == ZN_UNLOCKED) { error = do_callback(zevtchan, ev); (void) pthread_mutex_unlock(&(zevtchan->zn_mutex)); /* * Every ENOMEM failure causes do_callback to increment * zn_failure_count and every success causes it to * set zn_failure_count to zero. If we got EAGAIN, * we will sleep for zn_failure_count seconds and return * EAGAIN to gpec to try again. * * After 55 seconds, or 10 try's we give up and drop the * event. */ if (error == EAGAIN) { if (zevtchan->zn_failure_count > ZONE_CB_RETRY_COUNT) { return (0); } (void) sleep(zevtchan->zn_failure_count); } return (error); } if (zevtchan->zn_state == ZN_PING_RECEIVED) { (void) pthread_mutex_unlock(&(zevtchan->zn_mutex)); return (0); } abort(); return (0); } void zonecfg_notify_critical_enter(void *h) { struct znotify *zevtchan = h; (void) pthread_mutex_lock(&(zevtchan->zn_bigmutex)); zevtchan->zn_state = ZN_LOCKED; } int zonecfg_notify_critical_exit(void * h) { struct znotify *zevtchan = h; if (zevtchan->zn_state == ZN_UNLOCKED) return (0); (void) pthread_mutex_lock(&(zevtchan->zn_mutex)); zevtchan->zn_state = ZN_PING_INFLIGHT; (void) sysevent_evc_publish(zevtchan->zn_eventchan, ZONE_EVENT_STATUS_CLASS, ZONE_EVENT_PING_SUBCLASS, ZONE_EVENT_PING_PUBLISHER, zevtchan->zn_subscriber_id, NULL, EVCH_SLEEP); while (zevtchan->zn_state != ZN_PING_RECEIVED) { (void) pthread_cond_wait(&(zevtchan->zn_cond), &(zevtchan->zn_mutex)); } if (zevtchan->zn_failed == B_TRUE) { zevtchan->zn_state = ZN_LOCKED; zevtchan->zn_failed = B_FALSE; (void) pthread_mutex_unlock(&(zevtchan->zn_mutex)); return (1); } zevtchan->zn_state = ZN_UNLOCKED; (void) pthread_mutex_unlock(&(zevtchan->zn_mutex)); (void) pthread_mutex_unlock(&(zevtchan->zn_bigmutex)); return (0); } void zonecfg_notify_critical_abort(void *h) { struct znotify *zevtchan = h; zevtchan->zn_state = ZN_UNLOCKED; zevtchan->zn_failed = B_FALSE; /* * Don't do anything about zn_lock. If it is held, it could only be * held by zn_cb and it will be unlocked soon. */ (void) pthread_mutex_unlock(&(zevtchan->zn_bigmutex)); } void * zonecfg_notify_bind(int(*func)(const char *zonename, zoneid_t zid, const char *newstate, const char *oldstate, hrtime_t when, void *p), void *p) { struct znotify *zevtchan; int i = 1; int r; zevtchan = malloc(sizeof (struct znotify)); if (zevtchan == NULL) return (NULL); zevtchan->zn_private = p; zevtchan->zn_callback = func; zevtchan->zn_state = ZN_UNLOCKED; zevtchan->zn_failed = B_FALSE; if (pthread_mutex_init(&(zevtchan->zn_mutex), NULL)) goto out3; if (pthread_cond_init(&(zevtchan->zn_cond), NULL)) { (void) pthread_mutex_destroy(&(zevtchan->zn_mutex)); goto out3; } if (pthread_mutex_init(&(zevtchan->zn_bigmutex), NULL)) { (void) pthread_mutex_destroy(&(zevtchan->zn_mutex)); (void) pthread_cond_destroy(&(zevtchan->zn_cond)); goto out3; } if (sysevent_evc_bind(ZONE_EVENT_CHANNEL, &(zevtchan->zn_eventchan), 0) != 0) goto out2; do { /* * At 4 digits the subscriber ID gets too long and we have * no chance of successfully registering. */ if (i > 999) goto out1; (void) sprintf(zevtchan->zn_subscriber_id, "zone_%li_%i", getpid() % 999999l, i); r = sysevent_evc_subscribe(zevtchan->zn_eventchan, zevtchan->zn_subscriber_id, ZONE_EVENT_STATUS_CLASS, zn_cb, zevtchan, 0); i++; } while (r); return (zevtchan); out1: (void) sysevent_evc_unbind(zevtchan->zn_eventchan); out2: (void) pthread_mutex_destroy(&zevtchan->zn_mutex); (void) pthread_cond_destroy(&zevtchan->zn_cond); (void) pthread_mutex_destroy(&(zevtchan->zn_bigmutex)); out3: free(zevtchan); return (NULL); } void zonecfg_notify_unbind(void *handle) { int ret; (void) sysevent_evc_unbind(((struct znotify *)handle)->zn_eventchan); /* * Check that all evc threads have gone away. This should be * enforced by sysevent_evc_unbind. */ ret = pthread_mutex_trylock(&((struct znotify *)handle)->zn_mutex); if (ret) abort(); (void) pthread_mutex_unlock(&((struct znotify *)handle)->zn_mutex); (void) pthread_mutex_destroy(&((struct znotify *)handle)->zn_mutex); (void) pthread_cond_destroy(&((struct znotify *)handle)->zn_cond); (void) pthread_mutex_destroy(&((struct znotify *)handle)->zn_bigmutex); free(handle); } static int zonecfg_add_ds_core(zone_dochandle_t handle, struct zone_dstab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_DATASET, NULL); if ((err = newprop(newnode, DTD_ATTR_NAME, tabptr->zone_dataset_name)) != Z_OK) return (err); return (Z_OK); } int zonecfg_add_ds(zone_dochandle_t handle, struct zone_dstab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_add_ds_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } static int zonecfg_delete_ds_core(zone_dochandle_t handle, struct zone_dstab *tabptr) { xmlNodePtr cur = handle->zone_dh_cur; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_DATASET)) continue; if (match_prop(cur, DTD_ATTR_NAME, tabptr->zone_dataset_name)) { xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } } return (Z_NO_RESOURCE_ID); } int zonecfg_delete_ds(zone_dochandle_t handle, struct zone_dstab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_ds_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_modify_ds( zone_dochandle_t handle, struct zone_dstab *oldtabptr, struct zone_dstab *newtabptr) { int err; if (oldtabptr == NULL || newtabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = zonecfg_delete_ds_core(handle, oldtabptr)) != Z_OK) return (err); if ((err = zonecfg_add_ds_core(handle, newtabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_lookup_ds(zone_dochandle_t handle, struct zone_dstab *tabptr) { xmlNodePtr cur, firstmatch; int err; char dataset[MAXNAMELEN]; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; firstmatch = NULL; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_DATASET)) continue; if (strlen(tabptr->zone_dataset_name) > 0) { if ((fetchprop(cur, DTD_ATTR_NAME, dataset, sizeof (dataset)) == Z_OK) && (strcmp(tabptr->zone_dataset_name, dataset) == 0)) { if (firstmatch == NULL) firstmatch = cur; else return (Z_INSUFFICIENT_SPEC); } } } if (firstmatch == NULL) return (Z_NO_RESOURCE_ID); cur = firstmatch; if ((err = fetchprop(cur, DTD_ATTR_NAME, tabptr->zone_dataset_name, sizeof (tabptr->zone_dataset_name))) != Z_OK) return (err); return (Z_OK); } int zonecfg_setdsent(zone_dochandle_t handle) { return (zonecfg_setent(handle)); } int zonecfg_getdsent(zone_dochandle_t handle, struct zone_dstab *tabptr) { xmlNodePtr cur; int err; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (!xmlStrcmp(cur->name, DTD_ELEM_DATASET)) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_NAME, tabptr->zone_dataset_name, sizeof (tabptr->zone_dataset_name))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_enddsent(zone_dochandle_t handle) { return (zonecfg_endent(handle)); } /* * Support for aliased rctls; that is, rctls that have simplified names in * zonecfg. For example, max-lwps is an alias for a well defined zone.max-lwps * rctl. If there are multiple existing values for one of these rctls or if * there is a single value that does not match the well defined template (i.e. * it has a different action) then we cannot treat the rctl as having an alias * so we return Z_ALIAS_DISALLOW. That means that the rctl cannot be * managed in zonecfg via an alias and that the standard rctl syntax must be * used. * * The possible return values are: * Z_NO_PROPERTY_ID - invalid alias name * Z_ALIAS_DISALLOW - pre-existing, incompatible rctl definition * Z_NO_ENTRY - no rctl is configured for this alias * Z_OK - we got a valid rctl for the specified alias */ int zonecfg_get_aliased_rctl(zone_dochandle_t handle, char *name, uint64_t *rval) { boolean_t found = B_FALSE; boolean_t found_val = B_FALSE; xmlNodePtr cur, val; char savedname[MAXNAMELEN]; struct zone_rctlvaltab rctl; int i; int err; for (i = 0; aliases[i].shortname != NULL; i++) if (strcmp(name, aliases[i].shortname) == 0) break; if (aliases[i].shortname == NULL) return (Z_NO_PROPERTY_ID); if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_RCTL) != 0) continue; if ((fetchprop(cur, DTD_ATTR_NAME, savedname, sizeof (savedname)) == Z_OK) && (strcmp(savedname, aliases[i].realname) == 0)) { /* * If we already saw one of these, we can't have an * alias since we just found another. */ if (found) return (Z_ALIAS_DISALLOW); found = B_TRUE; for (val = cur->xmlChildrenNode; val != NULL; val = val->next) { /* * If we already have one value, we can't have * an alias since we just found another. */ if (found_val) return (Z_ALIAS_DISALLOW); found_val = B_TRUE; if ((fetchprop(val, DTD_ATTR_PRIV, rctl.zone_rctlval_priv, sizeof (rctl.zone_rctlval_priv)) != Z_OK)) break; if ((fetchprop(val, DTD_ATTR_LIMIT, rctl.zone_rctlval_limit, sizeof (rctl.zone_rctlval_limit)) != Z_OK)) break; if ((fetchprop(val, DTD_ATTR_ACTION, rctl.zone_rctlval_action, sizeof (rctl.zone_rctlval_action)) != Z_OK)) break; } /* check priv and action match the expected vals */ if (strcmp(rctl.zone_rctlval_priv, aliases[i].priv) != 0 || strcmp(rctl.zone_rctlval_action, aliases[i].action) != 0) return (Z_ALIAS_DISALLOW); } } if (found) { *rval = strtoull(rctl.zone_rctlval_limit, NULL, 10); return (Z_OK); } return (Z_NO_ENTRY); } int zonecfg_rm_aliased_rctl(zone_dochandle_t handle, char *name) { int i; uint64_t val; struct zone_rctltab rctltab; /* * First check that we have a valid aliased rctl to remove. * This will catch an rctl entry with non-standard values or * multiple rctl values for this name. We need to ignore those * rctl entries. */ if (zonecfg_get_aliased_rctl(handle, name, &val) != Z_OK) return (Z_OK); for (i = 0; aliases[i].shortname != NULL; i++) if (strcmp(name, aliases[i].shortname) == 0) break; if (aliases[i].shortname == NULL) return (Z_NO_RESOURCE_ID); (void) strlcpy(rctltab.zone_rctl_name, aliases[i].realname, sizeof (rctltab.zone_rctl_name)); return (zonecfg_delete_rctl(handle, &rctltab)); } boolean_t zonecfg_aliased_rctl_ok(zone_dochandle_t handle, char *name) { uint64_t tmp_val; switch (zonecfg_get_aliased_rctl(handle, name, &tmp_val)) { case Z_OK: /*FALLTHRU*/ case Z_NO_ENTRY: return (B_TRUE); default: return (B_FALSE); } } int zonecfg_set_aliased_rctl(zone_dochandle_t handle, char *name, uint64_t val) { int i; int err; struct zone_rctltab rctltab; struct zone_rctlvaltab *rctlvaltab; char buf[128]; if (!zonecfg_aliased_rctl_ok(handle, name)) return (Z_ALIAS_DISALLOW); for (i = 0; aliases[i].shortname != NULL; i++) if (strcmp(name, aliases[i].shortname) == 0) break; if (aliases[i].shortname == NULL) return (Z_NO_RESOURCE_ID); /* remove any pre-existing definition for this rctl */ (void) zonecfg_rm_aliased_rctl(handle, name); (void) strlcpy(rctltab.zone_rctl_name, aliases[i].realname, sizeof (rctltab.zone_rctl_name)); rctltab.zone_rctl_valptr = NULL; if ((rctlvaltab = calloc(1, sizeof (struct zone_rctlvaltab))) == NULL) return (Z_NOMEM); (void) snprintf(buf, sizeof (buf), "%llu", (long long)val); (void) strlcpy(rctlvaltab->zone_rctlval_priv, aliases[i].priv, sizeof (rctlvaltab->zone_rctlval_priv)); (void) strlcpy(rctlvaltab->zone_rctlval_limit, buf, sizeof (rctlvaltab->zone_rctlval_limit)); (void) strlcpy(rctlvaltab->zone_rctlval_action, aliases[i].action, sizeof (rctlvaltab->zone_rctlval_action)); rctlvaltab->zone_rctlval_next = NULL; if ((err = zonecfg_add_rctl_value(&rctltab, rctlvaltab)) != Z_OK) return (err); return (zonecfg_add_rctl(handle, &rctltab)); } static int delete_tmp_pool(zone_dochandle_t handle) { int err; xmlNodePtr cur = handle->zone_dh_cur; if ((err = operation_prep(handle)) != Z_OK) return (err); for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_TMPPOOL) == 0) { xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } } return (Z_NO_RESOURCE_ID); } static int modify_tmp_pool(zone_dochandle_t handle, char *pool_importance) { int err; xmlNodePtr cur = handle->zone_dh_cur; xmlNodePtr newnode; err = delete_tmp_pool(handle); if (err != Z_OK && err != Z_NO_RESOURCE_ID) return (err); if (*pool_importance != '\0') { if ((err = operation_prep(handle)) != Z_OK) return (err); newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_TMPPOOL, NULL); if ((err = newprop(newnode, DTD_ATTR_IMPORTANCE, pool_importance)) != Z_OK) return (err); } return (Z_OK); } static int add_pset_core(zone_dochandle_t handle, struct zone_psettab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_PSET, NULL); if ((err = newprop(newnode, DTD_ATTR_NCPU_MIN, tabptr->zone_ncpu_min)) != Z_OK) return (err); if ((err = newprop(newnode, DTD_ATTR_NCPU_MAX, tabptr->zone_ncpu_max)) != Z_OK) return (err); if ((err = modify_tmp_pool(handle, tabptr->zone_importance)) != Z_OK) return (err); return (Z_OK); } int zonecfg_add_pset(zone_dochandle_t handle, struct zone_psettab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); if ((err = add_pset_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_delete_pset(zone_dochandle_t handle) { int err; int res = Z_NO_RESOURCE_ID; xmlNodePtr cur = handle->zone_dh_cur; if ((err = operation_prep(handle)) != Z_OK) return (err); for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_PSET) == 0) { xmlUnlinkNode(cur); xmlFreeNode(cur); res = Z_OK; break; } } /* * Once we have msets, we should check that a mset * do not exist before we delete the tmp_pool data. */ err = delete_tmp_pool(handle); if (err != Z_OK && err != Z_NO_RESOURCE_ID) return (err); return (res); } int zonecfg_modify_pset(zone_dochandle_t handle, struct zone_psettab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); if ((err = zonecfg_delete_pset(handle)) != Z_OK) return (err); if ((err = add_pset_core(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_lookup_pset(zone_dochandle_t handle, struct zone_psettab *tabptr) { xmlNodePtr cur; int err; int res = Z_NO_ENTRY; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); /* this is an optional component */ tabptr->zone_importance[0] = '\0'; cur = handle->zone_dh_cur; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_PSET) == 0) { if ((err = fetchprop(cur, DTD_ATTR_NCPU_MIN, tabptr->zone_ncpu_min, sizeof (tabptr->zone_ncpu_min))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_NCPU_MAX, tabptr->zone_ncpu_max, sizeof (tabptr->zone_ncpu_max))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } res = Z_OK; } else if (xmlStrcmp(cur->name, DTD_ELEM_TMPPOOL) == 0) { if ((err = fetchprop(cur, DTD_ATTR_IMPORTANCE, tabptr->zone_importance, sizeof (tabptr->zone_importance))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } } } return (res); } int zonecfg_getpsetent(zone_dochandle_t handle, struct zone_psettab *tabptr) { int err; if ((err = zonecfg_setent(handle)) != Z_OK) return (err); err = zonecfg_lookup_pset(handle, tabptr); (void) zonecfg_endent(handle); return (err); } static int add_mcap(zone_dochandle_t handle, struct zone_mcaptab *tabptr) { xmlNodePtr newnode, cur = handle->zone_dh_cur; int err; newnode = xmlNewTextChild(cur, NULL, DTD_ELEM_MCAP, NULL); if ((err = newprop(newnode, DTD_ATTR_PHYSCAP, tabptr->zone_physmem_cap)) != Z_OK) return (err); return (Z_OK); } int zonecfg_delete_mcap(zone_dochandle_t handle) { int err; xmlNodePtr cur = handle->zone_dh_cur; if ((err = operation_prep(handle)) != Z_OK) return (err); for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_MCAP) != 0) continue; xmlUnlinkNode(cur); xmlFreeNode(cur); return (Z_OK); } return (Z_NO_RESOURCE_ID); } int zonecfg_modify_mcap(zone_dochandle_t handle, struct zone_mcaptab *tabptr) { int err; if (tabptr == NULL) return (Z_INVAL); err = zonecfg_delete_mcap(handle); /* it is ok if there is no mcap entry */ if (err != Z_OK && err != Z_NO_RESOURCE_ID) return (err); if ((err = add_mcap(handle, tabptr)) != Z_OK) return (err); return (Z_OK); } int zonecfg_lookup_mcap(zone_dochandle_t handle, struct zone_mcaptab *tabptr) { xmlNodePtr cur; int err; if (tabptr == NULL) return (Z_INVAL); if ((err = operation_prep(handle)) != Z_OK) return (err); cur = handle->zone_dh_cur; for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_MCAP) != 0) continue; if ((err = fetchprop(cur, DTD_ATTR_PHYSCAP, tabptr->zone_physmem_cap, sizeof (tabptr->zone_physmem_cap))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } return (Z_OK); } return (Z_NO_ENTRY); } static int getmcapent_core(zone_dochandle_t handle, struct zone_mcaptab *tabptr) { xmlNodePtr cur; int err; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (xmlStrcmp(cur->name, DTD_ELEM_MCAP) == 0) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_PHYSCAP, tabptr->zone_physmem_cap, sizeof (tabptr->zone_physmem_cap))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_getmcapent(zone_dochandle_t handle, struct zone_mcaptab *tabptr) { int err; if ((err = zonecfg_setent(handle)) != Z_OK) return (err); err = getmcapent_core(handle, tabptr); (void) zonecfg_endent(handle); return (err); } /* * Get the full tree of pkg/patch metadata in a set of nested AVL trees. * pkgs_avl is an AVL tree of pkgs. Each pkg element contains a * zpe_patches_avl member which holds an AVL tree of patches for that pkg. * The patch elements have the same zpe_patches_avl member, each of which can * hold an AVL tree of patches that are obsoleted by the patch. * * The zone xml data contains DTD_ELEM_PACKAGE elements, followed by * DTD_ELEM_PATCH elements. The DTD_ELEM_PATCH patch element applies to the * DTD_ELEM_PACKAGE that precedes it. The DTD_ELEM_PATCH element may have * child DTD_ELEM_OBSOLETES nodes associated with it. The DTD_ELEM_PACKAGE * really should have had the DTD_ELEM_PATCH elements as children but it * was not defined that way initially so we are stuck with the DTD definition * now. However, we can safely assume the ordering for compatibility. */ int zonecfg_getpkgdata(zone_dochandle_t handle, uu_avl_pool_t *pkg_pool, uu_avl_t *pkgs_avl) { xmlNodePtr cur; int res; zone_pkg_entry_t *pkg; char name[MAXNAMELEN]; char version[ZONE_PKG_VERSMAX]; if (handle == NULL) return (Z_INVAL); if ((res = zonecfg_setent(handle)) != Z_OK) return (res); if ((cur = handle->zone_dh_cur) == NULL) { res = Z_NO_ENTRY; goto done; } for (; cur != NULL; cur = cur->next) { if (xmlStrcmp(cur->name, DTD_ELEM_PACKAGE) == 0) { uu_avl_index_t where; if ((res = fetchprop(cur, DTD_ATTR_NAME, name, sizeof (name))) != Z_OK) goto done; if ((res = fetchprop(cur, DTD_ATTR_VERSION, version, sizeof (version))) != Z_OK) goto done; if ((pkg = (zone_pkg_entry_t *) malloc(sizeof (zone_pkg_entry_t))) == NULL) { res = Z_NOMEM; goto done; } if ((pkg->zpe_name = strdup(name)) == NULL) { free(pkg); res = Z_NOMEM; goto done; } if ((pkg->zpe_vers = strdup(version)) == NULL) { free(pkg->zpe_name); free(pkg); res = Z_NOMEM; goto done; } pkg->zpe_patches_avl = NULL; uu_avl_node_init(pkg, &pkg->zpe_entry, pkg_pool); if (uu_avl_find(pkgs_avl, pkg, NULL, &where) != NULL) { free(pkg->zpe_name); free(pkg->zpe_vers); free(pkg); } else { uu_avl_insert(pkgs_avl, pkg, where); } } else if (xmlStrcmp(cur->name, DTD_ELEM_PATCH) == 0) { zone_pkg_entry_t *patch; uu_avl_index_t where; char *p; char *dashp = NULL; xmlNodePtr child; if ((res = fetchprop(cur, DTD_ATTR_ID, name, sizeof (name))) != Z_OK) goto done; if ((patch = (zone_pkg_entry_t *) malloc(sizeof (zone_pkg_entry_t))) == NULL) { res = Z_NOMEM; goto done; } if ((p = strchr(name, '-')) != NULL) { dashp = p; *p++ = '\0'; } else { p = ""; } if ((patch->zpe_name = strdup(name)) == NULL) { free(patch); res = Z_NOMEM; goto done; } if ((patch->zpe_vers = strdup(p)) == NULL) { free(patch->zpe_name); free(patch); res = Z_NOMEM; goto done; } if (dashp != NULL) *dashp = '-'; patch->zpe_patches_avl = NULL; if (pkg->zpe_patches_avl == NULL) { pkg->zpe_patches_avl = uu_avl_create(pkg_pool, NULL, UU_DEFAULT); if (pkg->zpe_patches_avl == NULL) { free(patch->zpe_name); free(patch->zpe_vers); free(patch); res = Z_NOMEM; goto done; } } uu_avl_node_init(patch, &patch->zpe_entry, pkg_pool); if (uu_avl_find(pkg->zpe_patches_avl, patch, NULL, &where) != NULL) { free(patch->zpe_name); free(patch->zpe_vers); free(patch); } else { uu_avl_insert(pkg->zpe_patches_avl, patch, where); } /* Add any patches this patch obsoletes. */ for (child = cur->xmlChildrenNode; child != NULL; child = child->next) { zone_pkg_entry_t *obs; if (xmlStrcmp(child->name, DTD_ELEM_OBSOLETES) != 0) continue; if ((res = fetchprop(child, DTD_ATTR_ID, name, sizeof (name))) != Z_OK) goto done; if ((obs = (zone_pkg_entry_t *)malloc( sizeof (zone_pkg_entry_t))) == NULL) { res = Z_NOMEM; goto done; } if ((obs->zpe_name = strdup(name)) == NULL) { free(obs); res = Z_NOMEM; goto done; } /* * The version doesn't matter for obsoleted * patches. */ obs->zpe_vers = NULL; obs->zpe_patches_avl = NULL; /* * If this is the first obsolete patch, add an * AVL tree to the parent patch element. */ if (patch->zpe_patches_avl == NULL) { patch->zpe_patches_avl = uu_avl_create(pkg_pool, NULL, UU_DEFAULT); if (patch->zpe_patches_avl == NULL) { free(obs->zpe_name); free(obs); res = Z_NOMEM; goto done; } } /* Insert obsolete patch into the AVL tree. */ uu_avl_node_init(obs, &obs->zpe_entry, pkg_pool); if (uu_avl_find(patch->zpe_patches_avl, obs, NULL, &where) != NULL) { free(obs->zpe_name); free(obs); } else { uu_avl_insert(patch->zpe_patches_avl, obs, where); } } } } done: (void) zonecfg_endent(handle); return (res); } int zonecfg_setdevperment(zone_dochandle_t handle) { return (zonecfg_setent(handle)); } int zonecfg_getdevperment(zone_dochandle_t handle, struct zone_devpermtab *tabptr) { xmlNodePtr cur; int err; char buf[128]; tabptr->zone_devperm_acl = NULL; if (handle == NULL) return (Z_INVAL); if ((cur = handle->zone_dh_cur) == NULL) return (Z_NO_ENTRY); for (; cur != NULL; cur = cur->next) if (!xmlStrcmp(cur->name, DTD_ELEM_DEV_PERM)) break; if (cur == NULL) { handle->zone_dh_cur = handle->zone_dh_top; return (Z_NO_ENTRY); } if ((err = fetchprop(cur, DTD_ATTR_NAME, tabptr->zone_devperm_name, sizeof (tabptr->zone_devperm_name))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } if ((err = fetchprop(cur, DTD_ATTR_UID, buf, sizeof (buf))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } tabptr->zone_devperm_uid = (uid_t)atol(buf); if ((err = fetchprop(cur, DTD_ATTR_GID, buf, sizeof (buf))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } tabptr->zone_devperm_gid = (gid_t)atol(buf); if ((err = fetchprop(cur, DTD_ATTR_MODE, buf, sizeof (buf))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } tabptr->zone_devperm_mode = (mode_t)strtol(buf, (char **)NULL, 8); if ((err = fetch_alloc_prop(cur, DTD_ATTR_ACL, &(tabptr->zone_devperm_acl))) != Z_OK) { handle->zone_dh_cur = handle->zone_dh_top; return (err); } handle->zone_dh_cur = cur->next; return (Z_OK); } int zonecfg_enddevperment(zone_dochandle_t handle) { return (zonecfg_endent(handle)); } /* PRINTFLIKE1 */ static void zerror(const char *zone_name, const char *fmt, ...) { va_list alist; va_start(alist, fmt); (void) fprintf(stderr, "zone '%s': ", zone_name); (void) vfprintf(stderr, fmt, alist); (void) fprintf(stderr, "\n"); va_end(alist); } static void zperror(const char *str) { (void) fprintf(stderr, "%s: %s\n", str, strerror(errno)); } /* * The following three routines implement a simple locking mechanism to * ensure that only one instance of zoneadm at a time is able to manipulate * a given zone. The lock is built on top of an fcntl(2) lock of * []/var/run/zones/.zoneadm.lock. If a zoneadm instance * can grab that lock, it is allowed to manipulate the zone. * * Since zoneadm may call external applications which in turn invoke * zoneadm again, we introduce the notion of "lock inheritance". Any * instance of zoneadm that has another instance in its ancestry is assumed * to be acting on behalf of the original zoneadm, and is thus allowed to * manipulate its zone. * * This inheritance is implemented via the _ZONEADM_LOCK_HELD environment * variable. When zoneadm is granted a lock on its zone, this environment * variable is set to 1. When it releases the lock, the variable is set to * 0. Since a child process inherits its parent's environment, checking * the state of this variable indicates whether or not any ancestor owns * the lock. */ void zonecfg_init_lock_file(const char *zone_name, char **lock_env) { *lock_env = getenv(LOCK_ENV_VAR); if (*lock_env == NULL) { if (putenv(zoneadm_lock_not_held) != 0) { zerror(zone_name, gettext("could not set env: %s"), strerror(errno)); exit(1); } } else { if (atoi(*lock_env) == 1) zone_lock_cnt = 1; } } void zonecfg_release_lock_file(const char *zone_name, int lockfd) { /* * If we are cleaning up from a failed attempt to lock the zone for * the first time, we might have a zone_lock_cnt of 0. In that * error case, we don't want to do anything but close the lock * file. */ assert(zone_lock_cnt >= 0); if (zone_lock_cnt > 0) { assert(getenv(LOCK_ENV_VAR) != NULL); assert(atoi(getenv(LOCK_ENV_VAR)) == 1); if (--zone_lock_cnt > 0) { assert(lockfd == -1); return; } if (putenv(zoneadm_lock_not_held) != 0) { zerror(zone_name, gettext("could not set env: %s"), strerror(errno)); exit(1); } } assert(lockfd >= 0); (void) close(lockfd); } int zonecfg_grab_lock_file(const char *zone_name, int *lockfd) { char pathbuf[PATH_MAX]; struct flock flock; /* * If we already have the lock, we can skip this expensive song * and dance. */ assert(zone_lock_cnt >= 0); assert(getenv(LOCK_ENV_VAR) != NULL); if (zone_lock_cnt > 0) { assert(atoi(getenv(LOCK_ENV_VAR)) == 1); zone_lock_cnt++; *lockfd = -1; return (Z_OK); } assert(getenv(LOCK_ENV_VAR) != NULL); assert(atoi(getenv(LOCK_ENV_VAR)) == 0); if (snprintf(pathbuf, sizeof (pathbuf), "%s%s", zonecfg_get_root(), ZONES_TMPDIR) >= sizeof (pathbuf)) { zerror(zone_name, gettext("alternate root path is too long")); return (-1); } if (mkdir(pathbuf, S_IRWXU) < 0 && errno != EEXIST) { zerror(zone_name, gettext("could not mkdir %s: %s"), pathbuf, strerror(errno)); return (-1); } (void) chmod(pathbuf, S_IRWXU); /* * One of these lock files is created for each zone (when needed). * The lock files are not cleaned up (except on system reboot), * but since there is only one per zone, there is no resource * starvation issue. */ if (snprintf(pathbuf, sizeof (pathbuf), "%s%s/%s.zoneadm.lock", zonecfg_get_root(), ZONES_TMPDIR, zone_name) >= sizeof (pathbuf)) { zerror(zone_name, gettext("alternate root path is too long")); return (-1); } if ((*lockfd = open(pathbuf, O_RDWR|O_CREAT, S_IRUSR|S_IWUSR)) < 0) { zerror(zone_name, gettext("could not open %s: %s"), pathbuf, strerror(errno)); return (-1); } /* * Lock the file to synchronize with other zoneadmds */ flock.l_type = F_WRLCK; flock.l_whence = SEEK_SET; flock.l_start = (off_t)0; flock.l_len = (off_t)0; if ((fcntl(*lockfd, F_SETLKW, &flock) < 0) || (putenv(zoneadm_lock_held) != 0)) { zerror(zone_name, gettext("unable to lock %s: %s"), pathbuf, strerror(errno)); zonecfg_release_lock_file(zone_name, *lockfd); return (-1); } zone_lock_cnt = 1; return (Z_OK); } boolean_t zonecfg_lock_file_held(int *lockfd) { if (*lockfd >= 0 || zone_lock_cnt > 0) return (B_TRUE); return (B_FALSE); } static boolean_t get_doorname(const char *zone_name, char *buffer) { return (snprintf(buffer, PATH_MAX, "%s" ZONE_DOOR_PATH, zonecfg_get_root(), zone_name) < PATH_MAX); } /* * system daemons are not audited. For the global zone, this occurs * "naturally" since init is started with the default audit * characteristics. Since zoneadmd is a system daemon and it starts * init for a zone, it is necessary to clear out the audit * characteristics inherited from whomever started zoneadmd. This is * indicated by the audit id, which is set from the ruid parameter of * adt_set_user(), below. */ static void prepare_audit_context(const char *zone_name) { adt_session_data_t *ah; char *failure = gettext("audit failure: %s"); if (adt_start_session(&ah, NULL, 0)) { zerror(zone_name, failure, strerror(errno)); return; } if (adt_set_user(ah, ADT_NO_AUDIT, ADT_NO_AUDIT, ADT_NO_AUDIT, ADT_NO_AUDIT, NULL, ADT_NEW)) { zerror(zone_name, failure, strerror(errno)); (void) adt_end_session(ah); return; } if (adt_set_proc(ah)) zerror(zone_name, failure, strerror(errno)); (void) adt_end_session(ah); } static int start_zoneadmd(const char *zone_name, boolean_t lock) { char doorpath[PATH_MAX]; pid_t child_pid; int error = -1; int doorfd, lockfd; struct door_info info; if (!get_doorname(zone_name, doorpath)) return (-1); if (lock) if (zonecfg_grab_lock_file(zone_name, &lockfd) != Z_OK) return (-1); /* * Now that we have the lock, re-confirm that the daemon is * *not* up and working fine. If it is still down, we have a green * light to start it. */ if ((doorfd = open(doorpath, O_RDONLY)) < 0) { if (errno != ENOENT) { zperror(doorpath); goto out; } } else { if (door_info(doorfd, &info) == 0 && ((info.di_attributes & DOOR_REVOKED) == 0)) { error = Z_OK; (void) close(doorfd); goto out; } (void) close(doorfd); } if ((child_pid = fork()) == -1) { zperror(gettext("could not fork")); goto out; } if (child_pid == 0) { const char *argv[6], **ap; /* child process */ prepare_audit_context(zone_name); ap = argv; *ap++ = "zoneadmd"; *ap++ = "-z"; *ap++ = zone_name; if (zonecfg_in_alt_root()) { *ap++ = "-R"; *ap++ = zonecfg_get_root(); } *ap = NULL; (void) execv("/usr/lib/zones/zoneadmd", (char * const *)argv); /* * TRANSLATION_NOTE * zoneadmd is a literal that should not be translated. */ zperror(gettext("could not exec zoneadmd")); _exit(1); } else { /* parent process */ pid_t retval; int pstatus = 0; do { retval = waitpid(child_pid, &pstatus, 0); } while (retval != child_pid); if (WIFSIGNALED(pstatus) || (WIFEXITED(pstatus) && WEXITSTATUS(pstatus) != 0)) { zerror(zone_name, gettext("could not start %s"), "zoneadmd"); goto out; } } error = Z_OK; out: if (lock) zonecfg_release_lock_file(zone_name, lockfd); return (error); } int zonecfg_ping_zoneadmd(const char *zone_name) { char doorpath[PATH_MAX]; int doorfd; struct door_info info; if (!get_doorname(zone_name, doorpath)) return (-1); if ((doorfd = open(doorpath, O_RDONLY)) < 0) { return (-1); } if (door_info(doorfd, &info) == 0 && ((info.di_attributes & DOOR_REVOKED) == 0)) { (void) close(doorfd); return (Z_OK); } (void) close(doorfd); return (-1); } int zonecfg_call_zoneadmd(const char *zone_name, zone_cmd_arg_t *arg, char *locale, boolean_t lock) { char doorpath[PATH_MAX]; int doorfd, result; door_arg_t darg; zoneid_t zoneid; uint64_t uniqid = 0; zone_cmd_rval_t *rvalp; size_t rlen; char *cp, *errbuf; rlen = getpagesize(); if ((rvalp = malloc(rlen)) == NULL) { zerror(zone_name, gettext("failed to allocate %lu bytes: %s"), rlen, strerror(errno)); return (-1); } if ((zoneid = getzoneidbyname(zone_name)) != ZONE_ID_UNDEFINED) { (void) zone_getattr(zoneid, ZONE_ATTR_UNIQID, &uniqid, sizeof (uniqid)); } arg->uniqid = uniqid; (void) strlcpy(arg->locale, locale, sizeof (arg->locale)); if (!get_doorname(zone_name, doorpath)) { zerror(zone_name, gettext("alternate root path is too long")); free(rvalp); return (-1); } /* * Loop trying to start zoneadmd; if something goes seriously * wrong we break out and fail. */ for (;;) { if (start_zoneadmd(zone_name, lock) != Z_OK) break; if ((doorfd = open(doorpath, O_RDONLY)) < 0) { zperror(gettext("failed to open zone door")); break; } darg.data_ptr = (char *)arg; darg.data_size = sizeof (*arg); darg.desc_ptr = NULL; darg.desc_num = 0; darg.rbuf = (char *)rvalp; darg.rsize = rlen; if (door_call(doorfd, &darg) != 0) { (void) close(doorfd); /* * We'll get EBADF if the door has been revoked. */ if (errno != EBADF) { zperror(gettext("door_call failed")); break; } continue; /* take another lap */ } (void) close(doorfd); if (darg.data_size == 0) { /* Door server is going away; kick it again. */ continue; } errbuf = rvalp->errbuf; while (*errbuf != '\0') { /* * Remove any newlines since zerror() * will append one automatically. */ cp = strchr(errbuf, '\n'); if (cp != NULL) *cp = '\0'; zerror(zone_name, "%s", errbuf); if (cp == NULL) break; errbuf = cp + 1; } result = rvalp->rval == 0 ? 0 : -1; free(rvalp); return (result); } free(rvalp); return (-1); }