1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _ZONEADMD_H 28 #define _ZONEADMD_H 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 #include <libdladm.h> 35 36 /* 37 * Multi-threaded programs should avoid MT-unsafe library calls (i.e., any- 38 * thing which could try to acquire a user-level lock unprotected by an atfork 39 * handler) between fork(2) and exec(2). See the pthread_atfork(3THR) man 40 * page for details. In particular, we want to avoid calls to zerror() in 41 * such situations, as it calls setlocale(3c) which is susceptible to such 42 * problems. So instead we have the child use one of the special exit codes 43 * below when needed, and the parent look out for such possibilities and call 44 * zerror() there. 45 * 46 * Since 0, 1 and 2 are generally used for success, general error, and usage, 47 * we start with 3. 48 */ 49 #define ZEXIT_FORK 3 50 #define ZEXIT_EXEC 4 51 #define ZEXIT_ZONE_ENTER 5 52 53 #define DEVFSADM "devfsadm" 54 #define DEVFSADM_PATH "/usr/sbin/devfsadm" 55 56 #define EXEC_PREFIX "exec " 57 #define EXEC_LEN (strlen(EXEC_PREFIX)) 58 59 #define CLUSTER_BRAND_NAME "cluster" 60 #define LABELED_BRAND_NAME "labeled" 61 62 /* 0755 is the default directory mode. */ 63 #define DEFAULT_DIR_MODE \ 64 (S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) 65 #define DEFAULT_DIR_USER -1 /* user ID for chown: -1 means don't change */ 66 #define DEFAULT_DIR_GROUP -1 /* grp ID for chown: -1 means don't change */ 67 68 69 typedef struct zlog { 70 FILE *logfile; /* file to log to */ 71 72 /* 73 * The following are used if logging to a buffer. 74 */ 75 char *log; /* remaining log */ 76 size_t loglen; /* size of remaining log */ 77 char *buf; /* underlying storage */ 78 size_t buflen; /* total len of 'buf' */ 79 char *locale; /* locale to use for gettext() */ 80 } zlog_t; 81 82 extern zlog_t logsys; 83 84 extern mutex_t lock; 85 extern mutex_t msglock; 86 extern boolean_t in_death_throes; 87 extern boolean_t bringup_failure_recovery; 88 extern char *zone_name; 89 extern char boot_args[BOOTARGS_MAX]; 90 extern char bad_boot_arg[BOOTARGS_MAX]; 91 extern boolean_t zone_isnative; 92 extern boolean_t zone_iscluster; 93 extern dladm_handle_t dld_handle; 94 95 extern void zerror(zlog_t *, boolean_t, const char *, ...); 96 extern char *localize_msg(char *locale, const char *msg); 97 98 /* 99 * Eventstream interfaces. 100 */ 101 typedef enum { 102 Z_EVT_NULL = 0, 103 Z_EVT_ZONE_BOOTING, 104 Z_EVT_ZONE_REBOOTING, 105 Z_EVT_ZONE_HALTED, 106 Z_EVT_ZONE_READIED, 107 Z_EVT_ZONE_UNINSTALLING, 108 Z_EVT_ZONE_BOOTFAILED, 109 Z_EVT_ZONE_BADARGS 110 } zone_evt_t; 111 112 extern int eventstream_init(); 113 extern void eventstream_write(zone_evt_t evt); 114 115 /* 116 * Zone mount styles. Boot is the standard mount we do when booting the zone, 117 * scratch is the standard scratch zone mount for upgrade and update is a 118 * variation on the scratch zone where we don't lofs mount the zone's /etc 119 * and /var back into the scratch zone so that we can then do an 120 * 'update on attach' within the scratch zone. 121 */ 122 typedef enum { 123 Z_MNT_BOOT = 0, 124 Z_MNT_SCRATCH, 125 Z_MNT_UPDATE 126 } zone_mnt_t; 127 128 /* 129 * Virtual platform interfaces. 130 */ 131 extern zoneid_t vplat_create(zlog_t *, zone_mnt_t); 132 extern int vplat_bringup(zlog_t *, zone_mnt_t, zoneid_t); 133 extern int vplat_teardown(zlog_t *, boolean_t, boolean_t); 134 135 /* 136 * Filesystem mounting interfaces. 137 */ 138 extern int valid_mount_path(zlog_t *, const char *, const char *, 139 const char *, const char *); 140 extern int make_one_dir(zlog_t *, const char *, const char *, 141 mode_t, uid_t, gid_t); 142 extern void resolve_lofs(zlog_t *zlogp, char *path, size_t pathlen); 143 144 /* 145 * Console subsystem routines. 146 */ 147 extern int init_console(zlog_t *); 148 extern void serve_console(zlog_t *); 149 150 /* 151 * Contract handling. 152 */ 153 extern int init_template(void); 154 155 /* 156 * Routine to manage child processes. 157 */ 158 extern int do_subproc(zlog_t *, char *, char **); 159 160 #ifdef __cplusplus 161 } 162 #endif 163 164 #endif /* _ZONEADMD_H */ 165