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 2008 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 61 /* 0755 is the default directory mode. */ 62 #define DEFAULT_DIR_MODE \ 63 (S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) 64 #define DEFAULT_DIR_USER -1 /* user ID for chown: -1 means don't change */ 65 #define DEFAULT_DIR_GROUP -1 /* grp ID for chown: -1 means don't change */ 66 67 68 typedef struct zlog { 69 FILE *logfile; /* file to log to */ 70 71 /* 72 * The following are used if logging to a buffer. 73 */ 74 char *log; /* remaining log */ 75 size_t loglen; /* size of remaining log */ 76 char *buf; /* underlying storage */ 77 size_t buflen; /* total len of 'buf' */ 78 char *locale; /* locale to use for gettext() */ 79 } zlog_t; 80 81 extern zlog_t logsys; 82 83 extern mutex_t lock; 84 extern mutex_t msglock; 85 extern boolean_t in_death_throes; 86 extern boolean_t bringup_failure_recovery; 87 extern char *zone_name; 88 extern char boot_args[BOOTARGS_MAX]; 89 extern char bad_boot_arg[BOOTARGS_MAX]; 90 extern boolean_t zone_isnative; 91 extern boolean_t zone_iscluster; 92 extern dladm_handle_t dld_handle; 93 94 extern void zerror(zlog_t *, boolean_t, const char *, ...); 95 extern char *localize_msg(char *locale, const char *msg); 96 97 /* 98 * Eventstream interfaces. 99 */ 100 typedef enum { 101 Z_EVT_NULL = 0, 102 Z_EVT_ZONE_BOOTING, 103 Z_EVT_ZONE_REBOOTING, 104 Z_EVT_ZONE_HALTED, 105 Z_EVT_ZONE_READIED, 106 Z_EVT_ZONE_UNINSTALLING, 107 Z_EVT_ZONE_BOOTFAILED, 108 Z_EVT_ZONE_BADARGS 109 } zone_evt_t; 110 111 extern int eventstream_init(); 112 extern void eventstream_write(zone_evt_t evt); 113 114 /* 115 * Zone mount styles. Boot is the standard mount we do when booting the zone, 116 * scratch is the standard scratch zone mount for upgrade and update is a 117 * variation on the scratch zone where we don't lofs mount the zone's /etc 118 * and /var back into the scratch zone so that we can then do an 119 * 'update on attach' within the scratch zone. 120 */ 121 typedef enum { 122 Z_MNT_BOOT = 0, 123 Z_MNT_SCRATCH, 124 Z_MNT_UPDATE 125 } zone_mnt_t; 126 127 /* 128 * Virtual platform interfaces. 129 */ 130 extern zoneid_t vplat_create(zlog_t *, zone_mnt_t); 131 extern int vplat_bringup(zlog_t *, zone_mnt_t, zoneid_t); 132 extern int vplat_teardown(zlog_t *, boolean_t, boolean_t); 133 134 /* 135 * Filesystem mounting interfaces. 136 */ 137 extern int valid_mount_path(zlog_t *, const char *, const char *, 138 const char *, const char *); 139 extern int make_one_dir(zlog_t *, const char *, const char *, 140 mode_t, uid_t, gid_t); 141 extern void resolve_lofs(zlog_t *zlogp, char *path, size_t pathlen); 142 143 /* 144 * Console subsystem routines. 145 */ 146 extern int init_console_slave(zlog_t *); 147 extern void destroy_console_slave(void); 148 extern void reset_slave_terminal(zlog_t *); 149 extern int init_console(zlog_t *); 150 extern void serve_console(zlog_t *); 151 152 /* 153 * Contract handling. 154 */ 155 extern int init_template(void); 156 157 /* 158 * Routine to manage child processes. 159 */ 160 extern int do_subproc(zlog_t *, char *, char **); 161 162 #ifdef __cplusplus 163 } 164 #endif 165 166 #endif /* _ZONEADMD_H */ 167