libzonecfg.c revision cf8f45c7690afabe63bdb8066b11db58d708ad09
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <libsysevent.h>
#include <pthread.h>
#include <stdlib.h>
#include <errno.h>
#include <fnmatch.h>
#include <strings.h>
#include <unistd.h>
#include <sys/stat.h>
#include <assert.h>
#include <libgen.h>
#include <libintl.h>
#include <alloca.h>
#include <ctype.h>
#include <sys/mntio.h>
#include <sys/mnttab.h>
#include <sys/types.h>
#include <sys/nvpair.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <priv.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libdevinfo.h>
#include <uuid/uuid.h>
#include <libzonecfg.h>
#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_ATTR_ACTION (const xmlChar *) "action"
#define DTD_ATTR_ADDRESS (const xmlChar *) "address"
#define DTD_ATTR_AUTOBOOT (const xmlChar *) "autoboot"
#define DTD_ATTR_DIR (const xmlChar *) "directory"
#define DTD_ATTR_LIMIT (const xmlChar *) "limit"
#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_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" */
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;
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;
};
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 <libzonecfg.h>.
* 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
getrootattr(zone_dochandle_t handle, const xmlChar *propname,
char *propval, size_t propsize)
{
xmlNodePtr root;
xmlChar *property;
size_t srcsize;
int err;
if ((err = getroot(handle, &root)) != 0)
return (err);
if ((property = xmlGetProp(root, propname)) == NULL)
return (Z_BAD_PROPERTY);
srcsize = strlcpy(propval, (char *)property, propsize);
xmlFree(property);
if (srcsize >= propsize)
return (Z_TOO_BIG);
return (Z_OK);
}
static int
setrootattr(zone_dochandle_t handle, const xmlChar *propname,
const char *propval)
{
int err;
xmlNodePtr root;
if (propval == NULL)
return (Z_INVAL);
if ((err = getroot(handle, &root)) != Z_OK)
return (err);
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 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_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));
}
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)
{
return (setrootattr(handle, DTD_ATTR_ZONEPATH, zonepath));
}
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));
}
/*
* /etc/zones/index caches a vital piece of information which is also
* in the <zonename>.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, 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;
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-- but the library has
* malfunctioned if it fails to validate, so it's an assert.
*/
assert(xmlValidateDocument(&cvp, handle->zone_dh_doc) != 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.<pid>.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 at this time.
*/
if (handle->zone_dh_snapshot)
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);
}
/*
* 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);
}
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);
}
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);
}
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 "/<prefix-length>" 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);
}
int
zonecfg_lookup_nwif(zone_dochandle_t handle, struct zone_nwiftab *tabptr)
{
xmlNodePtr cur, firstmatch;
int err;
char address[INET6_ADDRSTRLEN], physical[LIFNAMSIZ];
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_NET))
continue;
if (strlen(tabptr->zone_nwif_physical) > 0) {
if ((fetchprop(cur, DTD_ATTR_PHYSICAL, physical,
sizeof (physical)) == Z_OK) &&
(strcmp(tabptr->zone_nwif_physical,
physical) == 0)) {
if (firstmatch == NULL)
firstmatch = cur;
else
return (Z_INSUFFICIENT_SPEC);
}
}
if (strlen(tabptr->zone_nwif_address) > 0) {
if ((fetchprop(cur, DTD_ATTR_ADDRESS, address,
sizeof (address)) == Z_OK)) {
if (zonecfg_same_net_address(
tabptr->zone_nwif_address, address)) {
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_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);
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);
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);
}
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);
}
/*
* This is the set of devices which must be present in every zone. Users
* can augment this list with additional device rules in their zone
* configuration, but at present cannot remove any of the this set of
* standard devices. All matching is done by /dev pathname (the "/dev"
* part is implicit. Try to keep rules which match a large number of
* devices (like the pts rule) first.
*/
static const char *standard_devs[] = {
"pts/*",
"ptmx",
"random",
"urandom",
"poll",
"pool",
"kstat",
"zero",
"null",
"crypto",
"cryptoadm",
"ticots",
"ticotsord",
"ticlts",
"lo0",
"lo1",
"lo2",
"lo3",
"sad/user",
"tty",
"logindmux",
"log",
"conslog",
"arp",
"tcp",
"tcp6",
"udp",
"udp6",
"sysevent",
#ifdef __sparc
"openprom",
#endif
"cpu/self/cpuid",
"dtrace/helper",
"zfs",
NULL
};
/*
* 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 rv = 0;
assert(rootpath != NULL);
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] == '/')) {
rv++;
if (callback == NULL)
continue;
if (callback(m.mnt_mountp, priv)) {
rv = -1;
goto out;
}
}
}
out:
(void) fclose(mnttab);
return (rv);
}
/*
* This routine is used to determine if a given device should appear in the
* zone represented by 'handle'. First it consults the list of "standard"
* zone devices. Then it scans the user-supplied device entries.
*/
int
zonecfg_match_dev(zone_dochandle_t handle, char *devpath,
struct zone_devtab *out_match)
{
int err;
boolean_t found = B_FALSE;
char match[MAXPATHLEN];
const char **stdmatch;
xmlNodePtr cur;
if (handle == NULL || devpath == NULL)
return (Z_INVAL);
/*
* Check the "standard" devices which we require to be present.
*/
for (stdmatch = &standard_devs[0]; *stdmatch != NULL; stdmatch++) {
/*
* fnmatch gives us simple but powerful shell-style matching.
*/
if (fnmatch(*stdmatch, devpath, FNM_PATHNAME) == 0) {
if (!out_match)
return (Z_OK);
(void) snprintf(out_match->zone_dev_match,
sizeof (out_match->zone_dev_match),
"/dev/%s", *stdmatch);
return (Z_OK);
}
}
/*
* We got no hits in the set of standard devices. On to the user
* supplied ones.
*/
if ((err = operation_prep(handle)) != Z_OK) {
handle->zone_dh_cur = NULL;
return (err);
}
cur = handle->zone_dh_cur;
cur = cur->xmlChildrenNode;
if (cur == NULL)
return (Z_NO_ENTRY);
handle->zone_dh_cur = cur;
for (; cur != NULL; cur = cur->next) {
char *m;
if (xmlStrcmp(cur->name, DTD_ELEM_DEVICE) != 0)
continue;
if ((err = fetchprop(cur, DTD_ATTR_MATCH, match,
sizeof (match))) != Z_OK) {
handle->zone_dh_cur = handle->zone_dh_top;
return (err);
}
m = match;
/*
* fnmatch gives us simple but powerful shell-style matching;
* but first, we need to strip out /dev/ from the matching rule.
*/
if (strncmp(m, "/dev/", 5) == 0)
m += 5;
if (fnmatch(m, devpath, FNM_PATHNAME) == 0) {
found = B_TRUE;
break;
}
}
if (!found)
return (Z_NO_ENTRY);
if (!out_match)
return (Z_OK);
(void) strlcpy(out_match->zone_dev_match, match,
sizeof (out_match->zone_dev_match));
return (Z_OK);
}
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("<negative number>", ...) 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 (tabptr->zone_rctl_name == NULL ||
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 || tabptr->zone_rctl_name == 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 || tabptr->zone_rctl_name == 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 || oldtabptr->zone_rctl_name == NULL ||
newtabptr == NULL || newtabptr->zone_rctl_name == 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);
}
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"));
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);
}
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);
}
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));
}
/* This will ultimately be configurable. */
static const char *priv_list[] = {
PRIV_FILE_CHOWN,
PRIV_FILE_CHOWN_SELF,
PRIV_FILE_DAC_EXECUTE,
PRIV_FILE_DAC_READ,
PRIV_FILE_DAC_SEARCH,
PRIV_FILE_DAC_WRITE,
PRIV_FILE_OWNER,
PRIV_FILE_SETID,
PRIV_IPC_DAC_READ,
PRIV_IPC_DAC_WRITE,
PRIV_IPC_OWNER,
PRIV_NET_ICMPACCESS,
PRIV_NET_PRIVADDR,
PRIV_PROC_CHROOT,
PRIV_SYS_AUDIT,
PRIV_PROC_AUDIT,
PRIV_PROC_OWNER,
PRIV_PROC_SETID,
PRIV_PROC_TASKID,
PRIV_SYS_ACCT,
PRIV_SYS_ADMIN,
PRIV_SYS_MOUNT,
PRIV_SYS_NFS,
PRIV_SYS_RESOURCE,
PRIV_CONTRACT_EVENT,
PRIV_CONTRACT_OBSERVER,
NULL
};
int
zonecfg_get_privset(priv_set_t *privs)
{
const char **strp;
priv_set_t *basic = priv_str_to_set("basic", ",", NULL);
if (basic == NULL)
return (Z_INVAL);
priv_union(basic, privs);
priv_freeset(basic);
for (strp = priv_list; *strp != NULL; strp++) {
if (priv_addset(privs, *strp) != 0) {
return (Z_INVAL);
}
}
return (Z_OK);
}
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)
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);
}
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:
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 uuid, char *zonename, size_t namelen)
{
FILE *fp;
struct zoneent *ze;
/*
* 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.
*/
if (uuid_is_null(*(uuid_t *)&uuid))
return (Z_NO_ZONE);
if ((fp = setzoneent()) == NULL)
return (Z_NO_ZONE);
while ((ze = getzoneent_private(fp)) != NULL) {
if (uuid_compare(*(uuid_t *)&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;
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 out2;
if (pthread_cond_init(&(zevtchan->zn_cond), NULL)) {
(void) pthread_mutex_destroy(&(zevtchan->zn_mutex));
goto out2;
}
if (pthread_mutex_init(&(zevtchan->zn_bigmutex), NULL)) {
(void) pthread_mutex_destroy(&(zevtchan->zn_mutex));
(void) pthread_cond_destroy(&(zevtchan->zn_cond));
goto out2;
}
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 out;
(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);
out:
sysevent_evc_unbind(zevtchan->zn_eventchan);
(void) pthread_mutex_destroy(&zevtchan->zn_mutex);
(void) pthread_cond_destroy(&zevtchan->zn_cond);
(void) pthread_mutex_destroy(&(zevtchan->zn_bigmutex));
out2:
free(zevtchan);
return (NULL);
}
void
zonecfg_notify_unbind(void *handle)
{
int ret;
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));
}