diff options
Diffstat (limited to 'contrib/opensolaris/cmd/zfs/zfs_main.c')
| -rw-r--r-- | contrib/opensolaris/cmd/zfs/zfs_main.c | 3253 |
1 files changed, 0 insertions, 3253 deletions
diff --git a/contrib/opensolaris/cmd/zfs/zfs_main.c b/contrib/opensolaris/cmd/zfs/zfs_main.c deleted file mode 100644 index de15b00..0000000 --- a/contrib/opensolaris/cmd/zfs/zfs_main.c +++ /dev/null @@ -1,3253 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ - -/* - * Copyright 2007 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#pragma ident "%Z%%M% %I% %E% SMI" - -#include <assert.h> -#include <ctype.h> -#include <errno.h> -#include <libgen.h> -#include <libintl.h> -#include <libuutil.h> -#include <locale.h> -#include <stddef.h> -#include <stdio.h> -#include <stdlib.h> -#include <strings.h> -#include <unistd.h> -#include <fcntl.h> -#include <zone.h> -#include <sys/mntent.h> -#include <sys/mnttab.h> -#include <sys/mount.h> -#include <sys/stat.h> - -#include <libzfs.h> - -#include "zfs_iter.h" -#include "zfs_util.h" - -libzfs_handle_t *g_zfs; - -static FILE *mnttab_file; - -static int zfs_do_clone(int argc, char **argv); -static int zfs_do_create(int argc, char **argv); -static int zfs_do_destroy(int argc, char **argv); -static int zfs_do_get(int argc, char **argv); -static int zfs_do_inherit(int argc, char **argv); -static int zfs_do_list(int argc, char **argv); -static int zfs_do_mount(int argc, char **argv); -static int zfs_do_rename(int argc, char **argv); -static int zfs_do_rollback(int argc, char **argv); -static int zfs_do_set(int argc, char **argv); -static int zfs_do_snapshot(int argc, char **argv); -static int zfs_do_unmount(int argc, char **argv); -static int zfs_do_share(int argc, char **argv); -static int zfs_do_unshare(int argc, char **argv); -static int zfs_do_send(int argc, char **argv); -static int zfs_do_receive(int argc, char **argv); -static int zfs_do_promote(int argc, char **argv); -static int zfs_do_jail(int argc, char **argv); -static int zfs_do_unjail(int argc, char **argv); - -/* - * These libumem hooks provide a reasonable set of defaults for the allocator's - * debugging facilities. - */ -const char * -_umem_debug_init(void) -{ - return ("default,verbose"); /* $UMEM_DEBUG setting */ -} - -const char * -_umem_logging_init(void) -{ - return ("fail,contents"); /* $UMEM_LOGGING setting */ -} - -typedef enum { - HELP_CLONE, - HELP_CREATE, - HELP_DESTROY, - HELP_GET, - HELP_INHERIT, - HELP_JAIL, - HELP_UNJAIL, - HELP_LIST, - HELP_MOUNT, - HELP_PROMOTE, - HELP_RECEIVE, - HELP_RENAME, - HELP_ROLLBACK, - HELP_SEND, - HELP_SET, - HELP_SHARE, - HELP_SNAPSHOT, - HELP_UNMOUNT, - HELP_UNSHARE -} zfs_help_t; - -typedef struct zfs_command { - const char *name; - int (*func)(int argc, char **argv); - zfs_help_t usage; -} zfs_command_t; - -/* - * Master command table. Each ZFS command has a name, associated function, and - * usage message. The usage messages need to be internationalized, so we have - * to have a function to return the usage message based on a command index. - * - * These commands are organized according to how they are displayed in the usage - * message. An empty command (one with a NULL name) indicates an empty line in - * the generic usage message. - */ -static zfs_command_t command_table[] = { - { "create", zfs_do_create, HELP_CREATE }, - { "destroy", zfs_do_destroy, HELP_DESTROY }, - { NULL }, - { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT }, - { "rollback", zfs_do_rollback, HELP_ROLLBACK }, - { "clone", zfs_do_clone, HELP_CLONE }, - { "promote", zfs_do_promote, HELP_PROMOTE }, - { "rename", zfs_do_rename, HELP_RENAME }, - { NULL }, - { "list", zfs_do_list, HELP_LIST }, - { NULL }, - { "set", zfs_do_set, HELP_SET }, - { "get", zfs_do_get, HELP_GET }, - { "inherit", zfs_do_inherit, HELP_INHERIT }, - { NULL }, - { "mount", zfs_do_mount, HELP_MOUNT }, - { NULL }, - { "unmount", zfs_do_unmount, HELP_UNMOUNT }, - { NULL }, - { "share", zfs_do_share, HELP_SHARE }, - { NULL }, - { "unshare", zfs_do_unshare, HELP_UNSHARE }, - { NULL }, - { "send", zfs_do_send, HELP_SEND }, - { "receive", zfs_do_receive, HELP_RECEIVE }, - { NULL }, - { "jail", zfs_do_jail, HELP_JAIL }, - { "unjail", zfs_do_unjail, HELP_UNJAIL }, -}; - -#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0])) - -zfs_command_t *current_command; - -static const char * -get_usage(zfs_help_t idx) -{ - switch (idx) { - case HELP_CLONE: - return (gettext("\tclone <snapshot> <filesystem|volume>\n")); - case HELP_CREATE: - return (gettext("\tcreate [[-o property=value] ... ] " - "<filesystem>\n" - "\tcreate [-s] [-b blocksize] [[-o property=value] ...]\n" - "\t -V <size> <volume>\n")); - case HELP_DESTROY: - return (gettext("\tdestroy [-rRf] " - "<filesystem|volume|snapshot>\n")); - case HELP_GET: - return (gettext("\tget [-rHp] [-o field[,field]...] " - "[-s source[,source]...]\n" - "\t <all | property[,property]...> " - "[filesystem|volume|snapshot] ...\n")); - case HELP_INHERIT: - return (gettext("\tinherit [-r] <property> " - "<filesystem|volume> ...\n")); - case HELP_JAIL: - return (gettext("\tjail <jailid> <filesystem>\n")); - case HELP_UNJAIL: - return (gettext("\tunjail <jailid> <filesystem>\n")); - case HELP_LIST: - return (gettext("\tlist [-rH] [-o property[,property]...] " - "[-t type[,type]...]\n" - "\t [-s property [-s property]...]" - " [-S property [-S property]...]\n" - "\t [filesystem|volume|snapshot] ...\n")); - case HELP_MOUNT: - return (gettext("\tmount\n" - "\tmount [-o opts] [-O] -a\n" - "\tmount [-o opts] [-O] <filesystem>\n")); - case HELP_PROMOTE: - return (gettext("\tpromote <clone filesystem>\n")); - case HELP_RECEIVE: - return (gettext("\treceive [-vnF] <filesystem|volume|" - "snapshot>\n" - "\treceive [-vnF] -d <filesystem>\n")); - case HELP_RENAME: - return (gettext("\trename <filesystem|volume|snapshot> " - "<filesystem|volume|snapshot>\n" - "\trename -r <snapshot> <snapshot>")); - case HELP_ROLLBACK: - return (gettext("\trollback [-rRf] <snapshot>\n")); - case HELP_SEND: - return (gettext("\tsend [-i <snapshot>] <snapshot>\n")); - case HELP_SET: - return (gettext("\tset <property=value> " - "<filesystem|volume> ...\n")); - case HELP_SHARE: - return (gettext("\tshare -a\n" - "\tshare <filesystem>\n")); - case HELP_SNAPSHOT: - return (gettext("\tsnapshot [-r] " - "<filesystem@name|volume@name>\n")); - case HELP_UNMOUNT: - return (gettext("\tunmount [-f] -a\n" - "\tunmount [-f] <filesystem|mountpoint>\n")); - case HELP_UNSHARE: - return (gettext("\tunshare [-f] -a\n" - "\tunshare [-f] <filesystem|mountpoint>\n")); - } - - abort(); - /* NOTREACHED */ -} - -/* - * Utility function to guarantee malloc() success. - */ -void * -safe_malloc(size_t size) -{ - void *data; - - if ((data = calloc(1, size)) == NULL) { - (void) fprintf(stderr, "internal error: out of memory\n"); - exit(1); - } - - return (data); -} - -/* - * Callback routinue that will print out information for each of the - * the properties. - */ -static zfs_prop_t -usage_prop_cb(zfs_prop_t prop, void *cb) -{ - FILE *fp = cb; - - (void) fprintf(fp, "\t%-13s ", zfs_prop_to_name(prop)); - - if (zfs_prop_readonly(prop)) - (void) fprintf(fp, " NO "); - else - (void) fprintf(fp, " YES "); - - if (zfs_prop_inheritable(prop)) - (void) fprintf(fp, " YES "); - else - (void) fprintf(fp, " NO "); - - if (zfs_prop_values(prop) == NULL) - (void) fprintf(fp, "-\n"); - else - (void) fprintf(fp, "%s\n", zfs_prop_values(prop)); - - return (ZFS_PROP_CONT); -} - -/* - * Display usage message. If we're inside a command, display only the usage for - * that command. Otherwise, iterate over the entire command table and display - * a complete usage message. - */ -static void -usage(boolean_t requested) -{ - int i; - boolean_t show_properties = B_FALSE; - FILE *fp = requested ? stdout : stderr; - - if (current_command == NULL) { - - (void) fprintf(fp, gettext("usage: zfs command args ...\n")); - (void) fprintf(fp, - gettext("where 'command' is one of the following:\n\n")); - - for (i = 0; i < NCOMMAND; i++) { - if (command_table[i].name == NULL) - (void) fprintf(fp, "\n"); - else - (void) fprintf(fp, "%s", - get_usage(command_table[i].usage)); - } - - (void) fprintf(fp, gettext("\nEach dataset is of the form: " - "pool/[dataset/]*dataset[@name]\n")); - } else { - (void) fprintf(fp, gettext("usage:\n")); - (void) fprintf(fp, "%s", get_usage(current_command->usage)); - } - - if (current_command != NULL && - (strcmp(current_command->name, "set") == 0 || - strcmp(current_command->name, "get") == 0 || - strcmp(current_command->name, "inherit") == 0 || - strcmp(current_command->name, "list") == 0)) - show_properties = B_TRUE; - - if (show_properties) { - - (void) fprintf(fp, - gettext("\nThe following properties are supported:\n")); - - (void) fprintf(fp, "\n\t%-13s %s %s %s\n\n", - "PROPERTY", "EDIT", "INHERIT", "VALUES"); - - /* Iterate over all properties */ - (void) zfs_prop_iter(usage_prop_cb, fp, B_FALSE); - - (void) fprintf(fp, gettext("\nSizes are specified in bytes " - "with standard units such as K, M, G, etc.\n")); - (void) fprintf(fp, gettext("\n\nUser-defined properties can " - "be specified by using a name containing a colon (:).\n")); - } else { - /* - * TRANSLATION NOTE: - * "zfs set|get" must not be localised this is the - * command name and arguments. - */ - (void) fprintf(fp, - gettext("\nFor the property list, run: zfs set|get\n")); - } - - /* - * See comments at end of main(). - */ - if (getenv("ZFS_ABORT") != NULL) { - (void) printf("dumping core by request\n"); - abort(); - } - - exit(requested ? 0 : 2); -} - -/* - * zfs clone <fs, snap, vol> fs - * - * Given an existing dataset, create a writable copy whose initial contents - * are the same as the source. The newly created dataset maintains a - * dependency on the original; the original cannot be destroyed so long as - * the clone exists. - */ -static int -zfs_do_clone(int argc, char **argv) -{ - zfs_handle_t *zhp; - int ret; - - /* check options */ - if (argc > 1 && argv[1][0] == '-') { - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - argv[1][1]); - usage(B_FALSE); - } - - /* check number of arguments */ - if (argc < 2) { - (void) fprintf(stderr, gettext("missing source dataset " - "argument\n")); - usage(B_FALSE); - } - if (argc < 3) { - (void) fprintf(stderr, gettext("missing target dataset " - "argument\n")); - usage(B_FALSE); - } - if (argc > 3) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - /* open the source dataset */ - if ((zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_SNAPSHOT)) == NULL) - return (1); - - /* pass to libzfs */ - ret = zfs_clone(zhp, argv[2], NULL); - - /* create the mountpoint if necessary */ - if (ret == 0) { - zfs_handle_t *clone = zfs_open(g_zfs, argv[2], ZFS_TYPE_ANY); - if (clone != NULL) { - if ((ret = zfs_mount(clone, NULL, 0)) == 0) - ret = zfs_share(clone); - zfs_close(clone); - } - zpool_log_history(g_zfs, argc, argv, argv[2], B_FALSE, B_FALSE); - } - - zfs_close(zhp); - - return (ret == 0 ? 0 : 1); -} - -/* - * zfs create [-o prop=value] ... fs - * zfs create [-s] [-b blocksize] [-o prop=value] ... -V vol size - * - * Create a new dataset. This command can be used to create filesystems - * and volumes. Snapshot creation is handled by 'zfs snapshot'. - * For volumes, the user must specify a size to be used. - * - * The '-s' flag applies only to volumes, and indicates that we should not try - * to set the reservation for this volume. By default we set a reservation - * equal to the size for any volume. - */ -static int -zfs_do_create(int argc, char **argv) -{ - zfs_type_t type = ZFS_TYPE_FILESYSTEM; - zfs_handle_t *zhp = NULL; - uint64_t volsize; - int c; - boolean_t noreserve = B_FALSE; - int ret = 1; - nvlist_t *props = NULL; - uint64_t intval; - char *propname; - char *propval = NULL; - char *strval; - - if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { - (void) fprintf(stderr, gettext("internal error: " - "out of memory\n")); - return (1); - } - - /* check options */ - while ((c = getopt(argc, argv, ":V:b:so:")) != -1) { - switch (c) { - case 'V': - type = ZFS_TYPE_VOLUME; - if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { - (void) fprintf(stderr, gettext("bad volume " - "size '%s': %s\n"), optarg, - libzfs_error_description(g_zfs)); - goto error; - } - - if (nvlist_add_uint64(props, - zfs_prop_to_name(ZFS_PROP_VOLSIZE), - intval) != 0) { - (void) fprintf(stderr, gettext("internal " - "error: out of memory\n")); - goto error; - } - volsize = intval; - break; - case 'b': - if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { - (void) fprintf(stderr, gettext("bad volume " - "block size '%s': %s\n"), optarg, - libzfs_error_description(g_zfs)); - goto error; - } - - if (nvlist_add_uint64(props, - zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), - intval) != 0) { - (void) fprintf(stderr, gettext("internal " - "error: out of memory\n")); - goto error; - } - break; - case 'o': - propname = optarg; - if ((propval = strchr(propname, '=')) == NULL) { - (void) fprintf(stderr, gettext("missing " - "'=' for -o option\n")); - goto error; - } - *propval = '\0'; - propval++; - if (nvlist_lookup_string(props, propname, - &strval) == 0) { - (void) fprintf(stderr, gettext("property '%s' " - "specified multiple times\n"), propname); - goto error; - } - if (nvlist_add_string(props, propname, propval) != 0) { - (void) fprintf(stderr, gettext("internal " - "error: out of memory\n")); - goto error; - } - break; - case 's': - noreserve = B_TRUE; - break; - case ':': - (void) fprintf(stderr, gettext("missing size " - "argument\n")); - goto badusage; - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - goto badusage; - } - } - - if (noreserve && type != ZFS_TYPE_VOLUME) { - (void) fprintf(stderr, gettext("'-s' can only be used when " - "creating a volume\n")); - goto badusage; - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (argc == 0) { - (void) fprintf(stderr, gettext("missing %s argument\n"), - zfs_type_to_name(type)); - goto badusage; - } - if (argc > 1) { - (void) fprintf(stderr, gettext("too many arguments\n")); - goto badusage; - } - - if (type == ZFS_TYPE_VOLUME && !noreserve && - nvlist_lookup_string(props, zfs_prop_to_name(ZFS_PROP_RESERVATION), - &strval) != 0) { - if (nvlist_add_uint64(props, - zfs_prop_to_name(ZFS_PROP_RESERVATION), - volsize) != 0) { - (void) fprintf(stderr, gettext("internal " - "error: out of memory\n")); - nvlist_free(props); - return (1); - } - } - - /* pass to libzfs */ - if (zfs_create(g_zfs, argv[0], type, props) != 0) - goto error; - - if (propval != NULL) - *(propval - 1) = '='; - zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0], - B_FALSE, B_FALSE); - - if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_ANY)) == NULL) - goto error; - - /* - * Mount and/or share the new filesystem as appropriate. We provide a - * verbose error message to let the user know that their filesystem was - * in fact created, even if we failed to mount or share it. - */ - if (zfs_mount(zhp, NULL, 0) != 0) { - (void) fprintf(stderr, gettext("filesystem successfully " - "created, but not mounted\n")); - ret = 1; - } else if (zfs_share(zhp) != 0) { - (void) fprintf(stderr, gettext("filesystem successfully " - "created, but not shared\n")); - ret = 1; - } else { - ret = 0; - } - -error: - if (zhp) - zfs_close(zhp); - nvlist_free(props); - return (ret); -badusage: - nvlist_free(props); - usage(B_FALSE); - return (2); -} - -/* - * zfs destroy [-rf] <fs, snap, vol> - * - * -r Recursively destroy all children - * -R Recursively destroy all dependents, including clones - * -f Force unmounting of any dependents - * - * Destroys the given dataset. By default, it will unmount any filesystems, - * and refuse to destroy a dataset that has any dependents. A dependent can - * either be a child, or a clone of a child. - */ -typedef struct destroy_cbdata { - boolean_t cb_first; - int cb_force; - int cb_recurse; - int cb_error; - int cb_needforce; - int cb_doclones; - boolean_t cb_closezhp; - zfs_handle_t *cb_target; - char *cb_snapname; -} destroy_cbdata_t; - -/* - * Check for any dependents based on the '-r' or '-R' flags. - */ -static int -destroy_check_dependent(zfs_handle_t *zhp, void *data) -{ - destroy_cbdata_t *cbp = data; - const char *tname = zfs_get_name(cbp->cb_target); - const char *name = zfs_get_name(zhp); - - if (strncmp(tname, name, strlen(tname)) == 0 && - (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { - /* - * This is a direct descendant, not a clone somewhere else in - * the hierarchy. - */ - if (cbp->cb_recurse) - goto out; - - if (cbp->cb_first) { - (void) fprintf(stderr, gettext("cannot destroy '%s': " - "%s has children\n"), - zfs_get_name(cbp->cb_target), - zfs_type_to_name(zfs_get_type(cbp->cb_target))); - (void) fprintf(stderr, gettext("use '-r' to destroy " - "the following datasets:\n")); - cbp->cb_first = B_FALSE; - cbp->cb_error = 1; - } - - (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); - } else { - /* - * This is a clone. We only want to report this if the '-r' - * wasn't specified, or the target is a snapshot. - */ - if (!cbp->cb_recurse && - zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) - goto out; - - if (cbp->cb_first) { - (void) fprintf(stderr, gettext("cannot destroy '%s': " - "%s has dependent clones\n"), - zfs_get_name(cbp->cb_target), - zfs_type_to_name(zfs_get_type(cbp->cb_target))); - (void) fprintf(stderr, gettext("use '-R' to destroy " - "the following datasets:\n")); - cbp->cb_first = B_FALSE; - cbp->cb_error = 1; - } - - (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); - } - -out: - zfs_close(zhp); - return (0); -} - -static int -destroy_callback(zfs_handle_t *zhp, void *data) -{ - destroy_cbdata_t *cbp = data; - - /* - * Ignore pools (which we've already flagged as an error before getting - * here. - */ - if (strchr(zfs_get_name(zhp), '/') == NULL && - zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { - zfs_close(zhp); - return (0); - } - - /* - * Bail out on the first error. - */ - if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || - zfs_destroy(zhp) != 0) { - zfs_close(zhp); - return (-1); - } - - zfs_close(zhp); - return (0); -} - -static int -destroy_snap_clones(zfs_handle_t *zhp, void *arg) -{ - destroy_cbdata_t *cbp = arg; - char thissnap[MAXPATHLEN]; - zfs_handle_t *szhp; - boolean_t closezhp = cbp->cb_closezhp; - int rv; - - (void) snprintf(thissnap, sizeof (thissnap), - "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); - - libzfs_print_on_error(g_zfs, B_FALSE); - szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); - libzfs_print_on_error(g_zfs, B_TRUE); - if (szhp) { - /* - * Destroy any clones of this snapshot - */ - if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, - cbp) != 0) { - zfs_close(szhp); - if (closezhp) - zfs_close(zhp); - return (-1); - } - zfs_close(szhp); - } - - cbp->cb_closezhp = B_TRUE; - rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); - if (closezhp) - zfs_close(zhp); - return (rv); -} - -static int -zfs_do_destroy(int argc, char **argv) -{ - destroy_cbdata_t cb = { 0 }; - int c; - zfs_handle_t *zhp; - char *cp; - - /* check options */ - while ((c = getopt(argc, argv, "frR")) != -1) { - switch (c) { - case 'f': - cb.cb_force = 1; - break; - case 'r': - cb.cb_recurse = 1; - break; - case 'R': - cb.cb_recurse = 1; - cb.cb_doclones = 1; - break; - case '?': - default: - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (argc == 0) { - (void) fprintf(stderr, gettext("missing path argument\n")); - usage(B_FALSE); - } - if (argc > 1) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - /* - * If we are doing recursive destroy of a snapshot, then the - * named snapshot may not exist. Go straight to libzfs. - */ - if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { - int ret; - - *cp = '\0'; - if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_ANY)) == NULL) - return (1); - *cp = '@'; - cp++; - - if (cb.cb_doclones) { - cb.cb_snapname = cp; - if (destroy_snap_clones(zhp, &cb) != 0) { - zfs_close(zhp); - return (1); - } - } - - ret = zfs_destroy_snaps(zhp, cp); - zfs_close(zhp); - if (ret) { - (void) fprintf(stderr, - gettext("no snapshots destroyed\n")); - } else { - zpool_log_history(g_zfs, argc + optind, argv - optind, - argv[0], B_FALSE, B_FALSE); - } - return (ret != 0); - } - - - /* Open the given dataset */ - if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_ANY)) == NULL) - return (1); - - cb.cb_target = zhp; - - /* - * Perform an explicit check for pools before going any further. - */ - if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && - zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { - (void) fprintf(stderr, gettext("cannot destroy '%s': " - "operation does not apply to pools\n"), - zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("use 'zfs destroy -r " - "%s' to destroy all datasets in the pool\n"), - zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("use 'zpool destroy %s' " - "to destroy the pool itself\n"), zfs_get_name(zhp)); - zfs_close(zhp); - return (1); - } - - /* - * Check for any dependents and/or clones. - */ - cb.cb_first = B_TRUE; - if (!cb.cb_doclones && - zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, - &cb) != 0) { - zfs_close(zhp); - return (1); - } - - - if (cb.cb_error || - zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) { - zfs_close(zhp); - return (1); - } - - /* - * Do the real thing. The callback will close the handle regardless of - * whether it succeeds or not. - */ - if (destroy_callback(zhp, &cb) != 0) - return (1); - - zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0], - B_FALSE, B_FALSE); - - return (0); -} - -/* - * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] - * < all | property[,property]... > < fs | snap | vol > ... - * - * -r recurse over any child datasets - * -H scripted mode. Headers are stripped, and fields are separated - * by tabs instead of spaces. - * -o Set of fields to display. One of "name,property,value,source". - * Default is all four. - * -s Set of sources to allow. One of - * "local,default,inherited,temporary,none". Default is all - * five. - * -p Display values in parsable (literal) format. - * - * Prints properties for the given datasets. The user can control which - * columns to display as well as which property types to allow. - */ - -/* - * Invoked to display the properties for a single dataset. - */ -static int -get_callback(zfs_handle_t *zhp, void *data) -{ - char buf[ZFS_MAXPROPLEN]; - zfs_source_t sourcetype; - char source[ZFS_MAXNAMELEN]; - libzfs_get_cbdata_t *cbp = data; - nvlist_t *userprop = zfs_get_user_props(zhp); - zfs_proplist_t *pl = cbp->cb_proplist; - nvlist_t *propval; - char *strval; - char *sourceval; - - for (; pl != NULL; pl = pl->pl_next) { - /* - * Skip the special fake placeholder. This will also skip over - * the name property when 'all' is specified. - */ - if (pl->pl_prop == ZFS_PROP_NAME && - pl == cbp->cb_proplist) - continue; - - if (pl->pl_prop != ZFS_PROP_INVAL) { - if (zfs_prop_get(zhp, pl->pl_prop, buf, - sizeof (buf), &sourcetype, source, - sizeof (source), - cbp->cb_literal) != 0) { - if (pl->pl_all) - continue; - if (!zfs_prop_valid_for_type(pl->pl_prop, - ZFS_TYPE_ANY)) { - (void) fprintf(stderr, - gettext("No such property '%s'\n"), - zfs_prop_to_name(pl->pl_prop)); - continue; - } - sourcetype = ZFS_SRC_NONE; - (void) strlcpy(buf, "-", sizeof (buf)); - } - - libzfs_print_one_property(zfs_get_name(zhp), cbp, - zfs_prop_to_name(pl->pl_prop), - buf, sourcetype, source); - } else { - if (nvlist_lookup_nvlist(userprop, - pl->pl_user_prop, &propval) != 0) { - if (pl->pl_all) - continue; - sourcetype = ZFS_SRC_NONE; - strval = "-"; - } else { - verify(nvlist_lookup_string(propval, - ZFS_PROP_VALUE, &strval) == 0); - verify(nvlist_lookup_string(propval, - ZFS_PROP_SOURCE, &sourceval) == 0); - - if (strcmp(sourceval, - zfs_get_name(zhp)) == 0) { - sourcetype = ZFS_SRC_LOCAL; - } else { - sourcetype = ZFS_SRC_INHERITED; - (void) strlcpy(source, - sourceval, sizeof (source)); - } - } - - libzfs_print_one_property(zfs_get_name(zhp), cbp, - pl->pl_user_prop, strval, sourcetype, - source); - } - } - - return (0); -} - -static int -zfs_do_get(int argc, char **argv) -{ - libzfs_get_cbdata_t cb = { 0 }; - boolean_t recurse = B_FALSE; - int i, c; - char *value, *fields; - int ret; - zfs_proplist_t fake_name = { 0 }; - - /* - * Set up default columns and sources. - */ - cb.cb_sources = ZFS_SRC_ALL; - cb.cb_columns[0] = GET_COL_NAME; - cb.cb_columns[1] = GET_COL_PROPERTY; - cb.cb_columns[2] = GET_COL_VALUE; - cb.cb_columns[3] = GET_COL_SOURCE; - - /* check options */ - while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) { - switch (c) { - case 'p': - cb.cb_literal = B_TRUE; - break; - case 'r': - recurse = B_TRUE; - break; - case 'H': - cb.cb_scripted = B_TRUE; - break; - case ':': - (void) fprintf(stderr, gettext("missing argument for " - "'%c' option\n"), optopt); - usage(B_FALSE); - break; - case 'o': - /* - * Process the set of columns to display. We zero out - * the structure to give us a blank slate. - */ - bzero(&cb.cb_columns, sizeof (cb.cb_columns)); - i = 0; - while (*optarg != '\0') { - static char *col_subopts[] = - { "name", "property", "value", "source", - NULL }; - - if (i == 4) { - (void) fprintf(stderr, gettext("too " - "many fields given to -o " - "option\n")); - usage(B_FALSE); - } - - switch (getsubopt(&optarg, col_subopts, - &value)) { - case 0: - cb.cb_columns[i++] = GET_COL_NAME; - break; - case 1: - cb.cb_columns[i++] = GET_COL_PROPERTY; - break; - case 2: - cb.cb_columns[i++] = GET_COL_VALUE; - break; - case 3: - cb.cb_columns[i++] = GET_COL_SOURCE; - break; - default: - (void) fprintf(stderr, - gettext("invalid column name " - "'%s'\n"), value); - usage(B_FALSE); - } - } - break; - - case 's': - cb.cb_sources = 0; - while (*optarg != '\0') { - static char *source_subopts[] = { - "local", "default", "inherited", - "temporary", "none", NULL }; - - switch (getsubopt(&optarg, source_subopts, - &value)) { - case 0: - cb.cb_sources |= ZFS_SRC_LOCAL; - break; - case 1: - cb.cb_sources |= ZFS_SRC_DEFAULT; - break; - case 2: - cb.cb_sources |= ZFS_SRC_INHERITED; - break; - case 3: - cb.cb_sources |= ZFS_SRC_TEMPORARY; - break; - case 4: - cb.cb_sources |= ZFS_SRC_NONE; - break; - default: - (void) fprintf(stderr, - gettext("invalid source " - "'%s'\n"), value); - usage(B_FALSE); - } - } - break; - - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - if (argc < 1) { - (void) fprintf(stderr, gettext("missing property " - "argument\n")); - usage(B_FALSE); - } - - fields = argv[0]; - - if (zfs_get_proplist(g_zfs, fields, &cb.cb_proplist) != 0) - usage(B_FALSE); - - argc--; - argv++; - - /* - * As part of zfs_expand_proplist(), we keep track of the maximum column - * width for each property. For the 'NAME' (and 'SOURCE') columns, we - * need to know the maximum name length. However, the user likely did - * not specify 'name' as one of the properties to fetch, so we need to - * make sure we always include at least this property for - * print_get_headers() to work properly. - */ - if (cb.cb_proplist != NULL) { - fake_name.pl_prop = ZFS_PROP_NAME; - fake_name.pl_width = strlen(gettext("NAME")); - fake_name.pl_next = cb.cb_proplist; - cb.cb_proplist = &fake_name; - } - - cb.cb_first = B_TRUE; - - /* run for each object */ - ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_ANY, NULL, - &cb.cb_proplist, get_callback, &cb, B_FALSE); - - if (cb.cb_proplist == &fake_name) - zfs_free_proplist(fake_name.pl_next); - else - zfs_free_proplist(cb.cb_proplist); - - return (ret); -} - -/* - * inherit [-r] <property> <fs|vol> ... - * - * -r Recurse over all children - * - * For each dataset specified on the command line, inherit the given property - * from its parent. Inheriting a property at the pool level will cause it to - * use the default value. The '-r' flag will recurse over all children, and is - * useful for setting a property on a hierarchy-wide basis, regardless of any - * local modifications for each dataset. - */ -typedef struct inherit_cbdata { - char *cb_propname; - boolean_t cb_any_successful; -} inherit_cbdata_t; - -static int -inherit_callback(zfs_handle_t *zhp, void *data) -{ - inherit_cbdata_t *cbp = data; - int ret; - - ret = zfs_prop_inherit(zhp, cbp->cb_propname); - if (ret == 0) - cbp->cb_any_successful = B_TRUE; - return (ret != 0); -} - -static int -zfs_do_inherit(int argc, char **argv) -{ - boolean_t recurse = B_FALSE; - int c; - zfs_prop_t prop; - inherit_cbdata_t cb; - int ret; - - /* check options */ - while ((c = getopt(argc, argv, "r")) != -1) { - switch (c) { - case 'r': - recurse = B_TRUE; - break; - case '?': - default: - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (argc < 1) { - (void) fprintf(stderr, gettext("missing property argument\n")); - usage(B_FALSE); - } - if (argc < 2) { - (void) fprintf(stderr, gettext("missing dataset argument\n")); - usage(B_FALSE); - } - - cb.cb_propname = argv[0]; - argc--; - argv++; - - if ((prop = zfs_name_to_prop(cb.cb_propname)) != ZFS_PROP_INVAL) { - if (zfs_prop_readonly(prop)) { - (void) fprintf(stderr, gettext( - "%s property is read-only\n"), - cb.cb_propname); - return (1); - } - if (!zfs_prop_inheritable(prop)) { - (void) fprintf(stderr, gettext("'%s' property cannot " - "be inherited\n"), cb.cb_propname); - if (prop == ZFS_PROP_QUOTA || - prop == ZFS_PROP_RESERVATION) - (void) fprintf(stderr, gettext("use 'zfs set " - "%s=none' to clear\n"), cb.cb_propname); - return (1); - } - } else if (!zfs_prop_user(cb.cb_propname)) { - (void) fprintf(stderr, gettext( - "invalid property '%s'\n"), - cb.cb_propname); - usage(B_FALSE); - } - - cb.cb_any_successful = B_FALSE; - - ret = zfs_for_each(argc, argv, recurse, - ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, NULL, NULL, - inherit_callback, &cb, B_FALSE); - - if (cb.cb_any_successful) { - zpool_log_history(g_zfs, argc + optind + 1, argv - optind - 1, - argv[0], B_FALSE, B_FALSE); - } - - return (ret); -} - -/* - * list [-rH] [-o property[,property]...] [-t type[,type]...] - * [-s property [-s property]...] [-S property [-S property]...] - * <dataset> ... - * - * -r Recurse over all children - * -H Scripted mode; elide headers and separate colums by tabs - * -o Control which fields to display. - * -t Control which object types to display. - * -s Specify sort columns, descending order. - * -S Specify sort columns, ascending order. - * - * When given no arguments, lists all filesystems in the system. - * Otherwise, list the specified datasets, optionally recursing down them if - * '-r' is specified. - */ -typedef struct list_cbdata { - boolean_t cb_first; - boolean_t cb_scripted; - zfs_proplist_t *cb_proplist; -} list_cbdata_t; - -/* - * Given a list of columns to display, output appropriate headers for each one. - */ -static void -print_header(zfs_proplist_t *pl) -{ - char headerbuf[ZFS_MAXPROPLEN]; - const char *header; - int i; - boolean_t first = B_TRUE; - boolean_t right_justify; - - for (; pl != NULL; pl = pl->pl_next) { - if (!first) { - (void) printf(" "); - } else { - first = B_FALSE; - } - - right_justify = B_FALSE; - if (pl->pl_prop != ZFS_PROP_INVAL) { - header = zfs_prop_column_name(pl->pl_prop); - right_justify = zfs_prop_align_right(pl->pl_prop); - } else { - for (i = 0; pl->pl_user_prop[i] != '\0'; i++) - headerbuf[i] = toupper(pl->pl_user_prop[i]); - headerbuf[i] = '\0'; - header = headerbuf; - } - - if (pl->pl_next == NULL && !right_justify) - (void) printf("%s", header); - else if (right_justify) - (void) printf("%*s", pl->pl_width, header); - else - (void) printf("%-*s", pl->pl_width, header); - } - - (void) printf("\n"); -} - -/* - * Given a dataset and a list of fields, print out all the properties according - * to the described layout. - */ -static void -print_dataset(zfs_handle_t *zhp, zfs_proplist_t *pl, int scripted) -{ - boolean_t first = B_TRUE; - char property[ZFS_MAXPROPLEN]; - nvlist_t *userprops = zfs_get_user_props(zhp); - nvlist_t *propval; - char *propstr; - boolean_t right_justify; - int width; - - for (; pl != NULL; pl = pl->pl_next) { - if (!first) { - if (scripted) - (void) printf("\t"); - else - (void) printf(" "); - } else { - first = B_FALSE; - } - - right_justify = B_FALSE; - if (pl->pl_prop != ZFS_PROP_INVAL) { - if (zfs_prop_get(zhp, pl->pl_prop, property, - sizeof (property), NULL, NULL, 0, B_FALSE) != 0) - propstr = "-"; - else - propstr = property; - - right_justify = zfs_prop_align_right(pl->pl_prop); - } else { - if (nvlist_lookup_nvlist(userprops, - pl->pl_user_prop, &propval) != 0) - propstr = "-"; - else - verify(nvlist_lookup_string(propval, - ZFS_PROP_VALUE, &propstr) == 0); - } - - width = pl->pl_width; - - /* - * If this is being called in scripted mode, or if this is the - * last column and it is left-justified, don't include a width - * format specifier. - */ - if (scripted || (pl->pl_next == NULL && !right_justify)) - (void) printf("%s", propstr); - else if (right_justify) - (void) printf("%*s", width, propstr); - else - (void) printf("%-*s", width, propstr); - } - - (void) printf("\n"); -} - -/* - * Generic callback function to list a dataset or snapshot. - */ -static int -list_callback(zfs_handle_t *zhp, void *data) -{ - list_cbdata_t *cbp = data; - - if (cbp->cb_first) { - if (!cbp->cb_scripted) - print_header(cbp->cb_proplist); - cbp->cb_first = B_FALSE; - } - - print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); - - return (0); -} - -static int -zfs_do_list(int argc, char **argv) -{ - int c; - boolean_t recurse = B_FALSE; - boolean_t scripted = B_FALSE; - static char default_fields[] = - "name,used,available,referenced,mountpoint"; - int types = ZFS_TYPE_ANY; - char *fields = NULL; - char *basic_fields = default_fields; - list_cbdata_t cb = { 0 }; - char *value; - int ret; - char *type_subopts[] = { "filesystem", "volume", "snapshot", NULL }; - zfs_sort_column_t *sortcol = NULL; - - /* check options */ - while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) { - switch (c) { - case 'o': - fields = optarg; - break; - case 'r': - recurse = B_TRUE; - break; - case 'H': - scripted = B_TRUE; - break; - case 's': - if (zfs_add_sort_column(&sortcol, optarg, - B_FALSE) != 0) { - (void) fprintf(stderr, - gettext("invalid property '%s'\n"), optarg); - usage(B_FALSE); - } - break; - case 'S': - if (zfs_add_sort_column(&sortcol, optarg, - B_TRUE) != 0) { - (void) fprintf(stderr, - gettext("invalid property '%s'\n"), optarg); - usage(B_FALSE); - } - break; - case 't': - types = 0; - while (*optarg != '\0') { - switch (getsubopt(&optarg, type_subopts, - &value)) { - case 0: - types |= ZFS_TYPE_FILESYSTEM; - break; - case 1: - types |= ZFS_TYPE_VOLUME; - break; - case 2: - types |= ZFS_TYPE_SNAPSHOT; - break; - default: - (void) fprintf(stderr, - gettext("invalid type '%s'\n"), - value); - usage(B_FALSE); - } - } - break; - case ':': - (void) fprintf(stderr, gettext("missing argument for " - "'%c' option\n"), optopt); - usage(B_FALSE); - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - if (fields == NULL) - fields = basic_fields; - - /* - * If the user specifies '-o all', the zfs_get_proplist() doesn't - * normally include the name of the dataset. For 'zfs list', we always - * want this property to be first. - */ - if (zfs_get_proplist(g_zfs, fields, &cb.cb_proplist) != 0) - usage(B_FALSE); - - cb.cb_scripted = scripted; - cb.cb_first = B_TRUE; - - ret = zfs_for_each(argc, argv, recurse, types, sortcol, &cb.cb_proplist, - list_callback, &cb, B_TRUE); - - zfs_free_proplist(cb.cb_proplist); - zfs_free_sort_columns(sortcol); - - if (ret == 0 && cb.cb_first) - (void) printf(gettext("no datasets available\n")); - - return (ret); -} - -/* - * zfs rename [-r] <fs | snap | vol> <fs | snap | vol> - * - * Renames the given dataset to another of the same type. - */ -/* ARGSUSED */ -static int -zfs_do_rename(int argc, char **argv) -{ - zfs_handle_t *zhp; - int c; - int ret; - int recurse = 0; - - /* check options */ - while ((c = getopt(argc, argv, "r")) != -1) { - switch (c) { - case 'r': - recurse = 1; - break; - case '?': - default: - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (argc < 1) { - (void) fprintf(stderr, gettext("missing source dataset " - "argument\n")); - usage(B_FALSE); - } - if (argc < 2) { - (void) fprintf(stderr, gettext("missing target dataset " - "argument\n")); - usage(B_FALSE); - } - if (argc > 2) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - if (recurse && strchr(argv[0], '@') == 0) { - (void) fprintf(stderr, gettext("source dataset for recursive " - "rename must be a snapshot\n")); - usage(B_FALSE); - } - - if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_ANY)) == NULL) - return (1); - - ret = (zfs_rename(zhp, argv[1], recurse) != 0); - - if (!ret) - zpool_log_history(g_zfs, argc + optind, argv - optind, argv[1], - B_FALSE, B_FALSE); - - zfs_close(zhp); - return (ret); -} - -/* - * zfs promote <fs> - * - * Promotes the given clone fs to be the parent - */ -/* ARGSUSED */ -static int -zfs_do_promote(int argc, char **argv) -{ - zfs_handle_t *zhp; - int ret; - - /* check options */ - if (argc > 1 && argv[1][0] == '-') { - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - argv[1][1]); - usage(B_FALSE); - } - - /* check number of arguments */ - if (argc < 2) { - (void) fprintf(stderr, gettext("missing clone filesystem" - " argument\n")); - usage(B_FALSE); - } - if (argc > 2) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); - if (zhp == NULL) - return (1); - - ret = (zfs_promote(zhp) != 0); - - if (!ret) - zpool_log_history(g_zfs, argc, argv, argv[1], B_FALSE, B_FALSE); - - zfs_close(zhp); - return (ret); -} - -/* - * zfs rollback [-rfR] <snapshot> - * - * -r Delete any intervening snapshots before doing rollback - * -R Delete any snapshots and their clones - * -f Force unmount filesystems, even if they are in use. - * - * Given a filesystem, rollback to a specific snapshot, discarding any changes - * since then and making it the active dataset. If more recent snapshots exist, - * the command will complain unless the '-r' flag is given. - */ -typedef struct rollback_cbdata { - uint64_t cb_create; - boolean_t cb_first; - int cb_doclones; - char *cb_target; - int cb_error; - boolean_t cb_recurse; - boolean_t cb_dependent; -} rollback_cbdata_t; - -/* - * Report any snapshots more recent than the one specified. Used when '-r' is - * not specified. We reuse this same callback for the snapshot dependents - if - * 'cb_dependent' is set, then this is a dependent and we should report it - * without checking the transaction group. - */ -static int -rollback_check(zfs_handle_t *zhp, void *data) -{ - rollback_cbdata_t *cbp = data; - - if (cbp->cb_doclones) { - zfs_close(zhp); - return (0); - } - - if (!cbp->cb_dependent) { - if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && - zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && - zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > - cbp->cb_create) { - - if (cbp->cb_first && !cbp->cb_recurse) { - (void) fprintf(stderr, gettext("cannot " - "rollback to '%s': more recent snapshots " - "exist\n"), - cbp->cb_target); - (void) fprintf(stderr, gettext("use '-r' to " - "force deletion of the following " - "snapshots:\n")); - cbp->cb_first = 0; - cbp->cb_error = 1; - } - - if (cbp->cb_recurse) { - cbp->cb_dependent = B_TRUE; - if (zfs_iter_dependents(zhp, B_TRUE, - rollback_check, cbp) != 0) { - zfs_close(zhp); - return (-1); - } - cbp->cb_dependent = B_FALSE; - } else { - (void) fprintf(stderr, "%s\n", - zfs_get_name(zhp)); - } - } - } else { - if (cbp->cb_first && cbp->cb_recurse) { - (void) fprintf(stderr, gettext("cannot rollback to " - "'%s': clones of previous snapshots exist\n"), - cbp->cb_target); - (void) fprintf(stderr, gettext("use '-R' to " - "force deletion of the following clones and " - "dependents:\n")); - cbp->cb_first = 0; - cbp->cb_error = 1; - } - - (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); - } - - zfs_close(zhp); - return (0); -} - -static int -zfs_do_rollback(int argc, char **argv) -{ - int ret; - int c; - rollback_cbdata_t cb = { 0 }; - zfs_handle_t *zhp, *snap; - char parentname[ZFS_MAXNAMELEN]; - char *delim; - int force = 0; - - /* check options */ - while ((c = getopt(argc, argv, "rfR")) != -1) { - switch (c) { - case 'f': - force = 1; - break; - case 'r': - cb.cb_recurse = 1; - break; - case 'R': - cb.cb_recurse = 1; - cb.cb_doclones = 1; - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (argc < 1) { - (void) fprintf(stderr, gettext("missing dataset argument\n")); - usage(B_FALSE); - } - if (argc > 1) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - /* open the snapshot */ - if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) - return (1); - - /* open the parent dataset */ - (void) strlcpy(parentname, argv[0], sizeof (parentname)); - verify((delim = strrchr(parentname, '@')) != NULL); - *delim = '\0'; - if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_ANY)) == NULL) { - zfs_close(snap); - return (1); - } - - /* - * Check for more recent snapshots and/or clones based on the presence - * of '-r' and '-R'. - */ - cb.cb_target = argv[0]; - cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); - cb.cb_first = B_TRUE; - cb.cb_error = 0; - if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) - goto out; - - if ((ret = cb.cb_error) != 0) - goto out; - - /* - * Rollback parent to the given snapshot. - */ - ret = zfs_rollback(zhp, snap, force); - - if (!ret) { - zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0], - B_FALSE, B_FALSE); - } - -out: - zfs_close(snap); - zfs_close(zhp); - - if (ret == 0) - return (0); - else - return (1); -} - -/* - * zfs set property=value { fs | snap | vol } ... - * - * Sets the given property for all datasets specified on the command line. - */ -typedef struct set_cbdata { - char *cb_propname; - char *cb_value; - boolean_t cb_any_successful; -} set_cbdata_t; - -static int -set_callback(zfs_handle_t *zhp, void *data) -{ - set_cbdata_t *cbp = data; - - if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { - switch (libzfs_errno(g_zfs)) { - case EZFS_MOUNTFAILED: - (void) fprintf(stderr, gettext("property may be set " - "but unable to remount filesystem\n")); - break; - case EZFS_SHARENFSFAILED: - (void) fprintf(stderr, gettext("property may be set " - "but unable to reshare filesystem\n")); - break; - } - return (1); - } - cbp->cb_any_successful = B_TRUE; - return (0); -} - -static int -zfs_do_set(int argc, char **argv) -{ - set_cbdata_t cb; - int ret; - - /* check for options */ - if (argc > 1 && argv[1][0] == '-') { - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - argv[1][1]); - usage(B_FALSE); - } - - /* check number of arguments */ - if (argc < 2) { - (void) fprintf(stderr, gettext("missing property=value " - "argument\n")); - usage(B_FALSE); - } - if (argc < 3) { - (void) fprintf(stderr, gettext("missing dataset name\n")); - usage(B_FALSE); - } - - /* validate property=value argument */ - cb.cb_propname = argv[1]; - if ((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) { - (void) fprintf(stderr, gettext("missing value in " - "property=value argument\n")); - usage(B_FALSE); - } - - *cb.cb_value = '\0'; - cb.cb_value++; - cb.cb_any_successful = B_FALSE; - - if (*cb.cb_propname == '\0') { - (void) fprintf(stderr, - gettext("missing property in property=value argument\n")); - usage(B_FALSE); - } - - ret = zfs_for_each(argc - 2, argv + 2, B_FALSE, - ZFS_TYPE_ANY, NULL, NULL, set_callback, &cb, B_FALSE); - - if (cb.cb_any_successful) { - *(cb.cb_value - 1) = '='; - zpool_log_history(g_zfs, argc, argv, argv[2], B_FALSE, B_FALSE); - } - - return (ret); -} - -/* - * zfs snapshot [-r] <fs@snap> - * - * Creates a snapshot with the given name. While functionally equivalent to - * 'zfs create', it is a separate command to diffferentiate intent. - */ -static int -zfs_do_snapshot(int argc, char **argv) -{ - int recursive = B_FALSE; - int ret; - char c; - - /* check options */ - while ((c = getopt(argc, argv, ":r")) != -1) { - switch (c) { - case 'r': - recursive = B_TRUE; - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (argc < 1) { - (void) fprintf(stderr, gettext("missing snapshot argument\n")); - usage(B_FALSE); - } - if (argc > 1) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - ret = zfs_snapshot(g_zfs, argv[0], recursive); - if (ret && recursive) - (void) fprintf(stderr, gettext("no snapshots were created\n")); - if (!ret) { - zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0], - B_FALSE, B_FALSE); - } - return (ret != 0); -} - -/* - * zfs send [-i <@snap>] <fs@snap> - * - * Send a backup stream to stdout. - */ -static int -zfs_do_send(int argc, char **argv) -{ - char *fromname = NULL; - char *cp; - zfs_handle_t *zhp; - int c, err; - - /* check options */ - while ((c = getopt(argc, argv, ":i:")) != -1) { - switch (c) { - case 'i': - if (fromname) - usage(B_FALSE); - fromname = optarg; - break; - case ':': - (void) fprintf(stderr, gettext("missing argument for " - "'%c' option\n"), optopt); - usage(B_FALSE); - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (argc < 1) { - (void) fprintf(stderr, gettext("missing snapshot argument\n")); - usage(B_FALSE); - } - if (argc > 1) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - if (isatty(STDOUT_FILENO)) { - (void) fprintf(stderr, - gettext("Error: Stream can not be written to a terminal.\n" - "You must redirect standard output.\n")); - return (1); - } - - if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) - return (1); - - /* - * If they specified the full path to the snapshot, chop off - * everything except the short name of the snapshot. - */ - if (fromname && (cp = strchr(fromname, '@')) != NULL) { - if (cp != fromname && - strncmp(argv[0], fromname, cp - fromname + 1)) { - (void) fprintf(stderr, - gettext("incremental source must be " - "in same filesystem\n")); - usage(B_FALSE); - } - fromname = cp + 1; - if (strchr(fromname, '@') || strchr(fromname, '/')) { - (void) fprintf(stderr, - gettext("invalid incremental source\n")); - usage(B_FALSE); - } - } - - err = zfs_send(zhp, fromname, STDOUT_FILENO); - zfs_close(zhp); - - return (err != 0); -} - -/* - * zfs receive <fs@snap> - * - * Restore a backup stream from stdin. - */ -static int -zfs_do_receive(int argc, char **argv) -{ - int c, err; - boolean_t isprefix = B_FALSE; - boolean_t dryrun = B_FALSE; - boolean_t verbose = B_FALSE; - boolean_t force = B_FALSE; - - /* check options */ - while ((c = getopt(argc, argv, ":dnvF")) != -1) { - switch (c) { - case 'd': - isprefix = B_TRUE; - break; - case 'n': - dryrun = B_TRUE; - break; - case 'v': - verbose = B_TRUE; - break; - case 'F': - force = B_TRUE; - break; - case ':': - (void) fprintf(stderr, gettext("missing argument for " - "'%c' option\n"), optopt); - usage(B_FALSE); - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (argc < 1) { - (void) fprintf(stderr, gettext("missing snapshot argument\n")); - usage(B_FALSE); - } - if (argc > 1) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - if (isatty(STDIN_FILENO)) { - (void) fprintf(stderr, - gettext("Error: Backup stream can not be read " - "from a terminal.\n" - "You must redirect standard input.\n")); - return (1); - } - - err = zfs_receive(g_zfs, argv[0], isprefix, verbose, dryrun, force, - STDIN_FILENO); - - if (!err) { - zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0], - B_FALSE, B_FALSE); - } - - return (err != 0); -} - -typedef struct get_all_cbdata { - zfs_handle_t **cb_handles; - size_t cb_alloc; - size_t cb_used; - uint_t cb_types; -} get_all_cbdata_t; - -static int -get_one_dataset(zfs_handle_t *zhp, void *data) -{ - get_all_cbdata_t *cbp = data; - zfs_type_t type = zfs_get_type(zhp); - - /* - * Interate over any nested datasets. - */ - if (type == ZFS_TYPE_FILESYSTEM && - zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { - zfs_close(zhp); - return (1); - } - - /* - * Skip any datasets whose type does not match. - */ - if ((type & cbp->cb_types) == 0) { - zfs_close(zhp); - return (0); - } - - if (cbp->cb_alloc == cbp->cb_used) { - zfs_handle_t **handles; - - if (cbp->cb_alloc == 0) - cbp->cb_alloc = 64; - else - cbp->cb_alloc *= 2; - - handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); - - if (cbp->cb_handles) { - bcopy(cbp->cb_handles, handles, - cbp->cb_used * sizeof (void *)); - free(cbp->cb_handles); - } - - cbp->cb_handles = handles; - } - - cbp->cb_handles[cbp->cb_used++] = zhp; - - return (0); -} - -static void -get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count) -{ - get_all_cbdata_t cb = { 0 }; - cb.cb_types = types; - - (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); - - *dslist = cb.cb_handles; - *count = cb.cb_used; -} - -static int -dataset_cmp(const void *a, const void *b) -{ - zfs_handle_t **za = (zfs_handle_t **)a; - zfs_handle_t **zb = (zfs_handle_t **)b; - char mounta[MAXPATHLEN]; - char mountb[MAXPATHLEN]; - boolean_t gota, gotb; - - if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) - verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, - sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); - if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) - verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, - sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); - - if (gota && gotb) - return (strcmp(mounta, mountb)); - - if (gota) - return (-1); - if (gotb) - return (1); - - return (strcmp(zfs_get_name(a), zfs_get_name(b))); -} - -/* - * Generic callback for sharing or mounting filesystems. Because the code is so - * similar, we have a common function with an extra parameter to determine which - * mode we are using. - */ -#define OP_SHARE 0x1 -#define OP_MOUNT 0x2 - -/* - * Share or mount a dataset. - */ -static int -share_mount_one(zfs_handle_t *zhp, int op, int flags, boolean_t explicit, - const char *options) -{ - char mountpoint[ZFS_MAXPROPLEN]; - char shareopts[ZFS_MAXPROPLEN]; - const char *cmdname = op == OP_SHARE ? "share" : "mount"; - struct mnttab mnt; - uint64_t zoned, canmount; - zfs_type_t type = zfs_get_type(zhp); - - assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); - - if (type == ZFS_TYPE_FILESYSTEM) { - /* - * Check to make sure we can mount/share this dataset. If we - * are in the global zone and the filesystem is exported to a - * local zone, or if we are in a local zone and the - * filesystem is not exported, then it is an error. - */ - zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); - - if (zoned && getzoneid() == GLOBAL_ZONEID) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot %s '%s': " - "dataset is exported to a local zone\n"), cmdname, - zfs_get_name(zhp)); - return (1); - - } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot %s '%s': " - "permission denied\n"), cmdname, - zfs_get_name(zhp)); - return (1); - } - - /* - * Ignore any filesystems which don't apply to us. This - * includes those with a legacy mountpoint, or those with - * legacy share options. - */ - verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, - sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); - verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, - sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); - canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); - - if (op == OP_SHARE && strcmp(shareopts, "off") == 0) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot share '%s': " - "legacy share\n"), zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("use share(1M) to " - "share this filesystem\n")); - return (1); - } - - /* - * We cannot share or mount legacy filesystems. If the - * shareopts is non-legacy but the mountpoint is legacy, we - * treat it as a legacy share. - */ - if (strcmp(mountpoint, "legacy") == 0) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot %s '%s': " - "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("use %s to " - "%s this filesystem\n"), op == OP_SHARE ? - "share(1M)" : "mount(1M)", cmdname); - return (1); - } - - if (strcmp(mountpoint, "none") == 0) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot %s '%s': no " - "mountpoint set\n"), cmdname, zfs_get_name(zhp)); - return (1); - } - - if (!canmount) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot %s '%s': " - "'canmount' property is set to 'off'\n"), cmdname, - zfs_get_name(zhp)); - return (1); - } - - /* - * At this point, we have verified that the mountpoint and/or - * shareopts are appropriate for auto management. If the - * filesystem is already mounted or shared, return (failing - * for explicit requests); otherwise mount or share the - * filesystem. - */ - switch (op) { - case OP_SHARE: - if (zfs_is_shared_nfs(zhp, NULL)) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot share " - "'%s': filesystem already shared\n"), - zfs_get_name(zhp)); - return (1); - } - - if (!zfs_is_mounted(zhp, NULL) && - zfs_mount(zhp, NULL, 0) != 0) - return (1); - - if (zfs_share_nfs(zhp) != 0) - return (1); - break; - - case OP_MOUNT: - if (options == NULL) - mnt.mnt_mntopts = ""; - else - mnt.mnt_mntopts = (char *)options; - - if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && - zfs_is_mounted(zhp, NULL)) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot mount " - "'%s': filesystem already mounted\n"), - zfs_get_name(zhp)); - return (1); - } - - if (zfs_mount(zhp, options, flags) != 0) - return (1); - break; - } - } else { - assert(op == OP_SHARE); - - /* - * Ignore any volumes that aren't shared. - */ - verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, - sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); - - if (strcmp(shareopts, "off") == 0) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot share '%s': " - "'shareiscsi' property not set\n"), - zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("set 'shareiscsi' " - "property or use iscsitadm(1M) to share this " - "volume\n")); - return (1); - } - - if (zfs_is_shared_iscsi(zhp)) { - if (!explicit) - return (0); - - (void) fprintf(stderr, gettext("cannot share " - "'%s': volume already shared\n"), - zfs_get_name(zhp)); - return (1); - } - - if (zfs_share_iscsi(zhp) != 0) - return (1); - } - - return (0); -} - -static int -share_mount(int op, int argc, char **argv) -{ - int do_all = 0; - int c, ret = 0; - const char *options = NULL; - int types, flags = 0; - - /* check options */ - while ((c = getopt(argc, argv, op == OP_MOUNT ? ":ao:O" : "a")) - != -1) { - switch (c) { - case 'a': - do_all = 1; - break; - case 'o': - options = optarg; - break; - case 'O': - warnx("no overlay mounts support on FreeBSD, ignoring"); - break; - case ':': - (void) fprintf(stderr, gettext("missing argument for " - "'%c' option\n"), optopt); - usage(B_FALSE); - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - /* check number of arguments */ - if (do_all) { - zfs_handle_t **dslist = NULL; - size_t i, count = 0; - - if (op == OP_MOUNT) { - types = ZFS_TYPE_FILESYSTEM; - } else if (argc > 0) { - if (strcmp(argv[0], "nfs") == 0) { - types = ZFS_TYPE_FILESYSTEM; - } else if (strcmp(argv[0], "iscsi") == 0) { - types = ZFS_TYPE_VOLUME; - } else { - (void) fprintf(stderr, gettext("share type " - "must be 'nfs' or 'iscsi'\n")); - usage(B_FALSE); - } - - argc--; - argv++; - } else { - types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; - } - - if (argc != 0) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - get_all_datasets(types, &dslist, &count); - - if (count == 0) - return (0); - - qsort(dslist, count, sizeof (void *), dataset_cmp); - - for (i = 0; i < count; i++) { - if (share_mount_one(dslist[i], op, flags, B_FALSE, - options) != 0) - ret = 1; - zfs_close(dslist[i]); - } - - free(dslist); - } else if (argc == 0) { - struct statfs *sfs; - int i, n; - - if (op == OP_SHARE) { - (void) fprintf(stderr, gettext("missing filesystem " - "argument\n")); - usage(B_FALSE); - } - - /* - * When mount is given no arguments, go through /etc/mnttab and - * display any active ZFS mounts. We hide any snapshots, since - * they are controlled automatically. - */ - if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) { - fprintf(stderr, "getmntinfo(): %s\n", strerror(errno)); - return (0); - } - for (i = 0; i < n; i++) { - if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0 || - strchr(sfs[i].f_mntfromname, '@') != NULL) - continue; - - (void) printf("%-30s %s\n", sfs[i].f_mntfromname, - sfs[i].f_mntonname); - } - - } else { - zfs_handle_t *zhp; - - types = ZFS_TYPE_FILESYSTEM; - if (op == OP_SHARE) - types |= ZFS_TYPE_VOLUME; - - if (argc > 1) { - (void) fprintf(stderr, - gettext("too many arguments\n")); - usage(B_FALSE); - } - - if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { - ret = 1; - } else { - ret = share_mount_one(zhp, op, flags, B_TRUE, - options); - zfs_close(zhp); - } - } - - return (ret); -} - -/* - * zfs mount -a [nfs | iscsi] - * zfs mount filesystem - * - * Mount all filesystems, or mount the given filesystem. - */ -static int -zfs_do_mount(int argc, char **argv) -{ - return (share_mount(OP_MOUNT, argc, argv)); -} - -/* - * zfs share -a [nfs | iscsi] - * zfs share filesystem - * - * Share all filesystems, or share the given filesystem. - */ -static int -zfs_do_share(int argc, char **argv) -{ - return (share_mount(OP_SHARE, argc, argv)); -} - -typedef struct unshare_unmount_node { - zfs_handle_t *un_zhp; - char *un_mountp; - uu_avl_node_t un_avlnode; -} unshare_unmount_node_t; - -/* ARGSUSED */ -static int -unshare_unmount_compare(const void *larg, const void *rarg, void *unused) -{ - const unshare_unmount_node_t *l = larg; - const unshare_unmount_node_t *r = rarg; - - return (strcmp(l->un_mountp, r->un_mountp)); -} - -/* - * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an - * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, - * and unmount it appropriately. - */ -static int -unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) -{ - zfs_handle_t *zhp; - int ret; - struct mnttab search = { 0 }, entry; - const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; - char property[ZFS_MAXPROPLEN]; - - /* - * Search for the given (major,minor) pair in the mount table. - */ - search.mnt_mountp = path; - rewind(mnttab_file); - if (getmntany(mnttab_file, &entry, &search) != 0) { - (void) fprintf(stderr, gettext("cannot %s '%s': not " - "currently mounted\n"), cmdname, path); - return (1); - } - - if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { - (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " - "filesystem\n"), cmdname, path); - return (1); - } - - if ((zhp = zfs_open(g_zfs, entry.mnt_special, - ZFS_TYPE_FILESYSTEM)) == NULL) - return (1); - - verify(zfs_prop_get(zhp, op == OP_SHARE ? - ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, property, - sizeof (property), NULL, NULL, 0, B_FALSE) == 0); - - if (op == OP_SHARE) { - if (strcmp(property, "off") == 0) { - (void) fprintf(stderr, gettext("cannot unshare " - "'%s': legacy share\n"), path); - (void) fprintf(stderr, gettext("use " - "unshare(1M) to unshare this filesystem\n")); - ret = 1; - } else if (!zfs_is_shared_nfs(zhp, NULL)) { - (void) fprintf(stderr, gettext("cannot unshare '%s': " - "not currently shared\n"), path); - ret = 1; - } else { - ret = zfs_unshareall_nfs(zhp); - } - } else { - if (is_manual) { - ret = zfs_unmount(zhp, NULL, flags); - } else if (strcmp(property, "legacy") == 0) { - (void) fprintf(stderr, gettext("cannot unmount " - "'%s': legacy mountpoint\n"), - zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("use umount(1M) " - "to unmount this filesystem\n")); - ret = 1; - } else { - ret = zfs_unmountall(zhp, flags); - } - } - - zfs_close(zhp); - - return (ret != 0); -} - -/* - * Generic callback for unsharing or unmounting a filesystem. - */ -static int -unshare_unmount(int op, int argc, char **argv) -{ - int do_all = 0; - int flags = 0; - int ret = 0; - int types, c; - zfs_handle_t *zhp; - char property[ZFS_MAXPROPLEN]; - - /* check options */ - while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { - switch (c) { - case 'a': - do_all = 1; - break; - case 'f': - flags = MS_FORCE; - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - usage(B_FALSE); - } - } - - argc -= optind; - argv += optind; - - if (do_all) { - /* - * We could make use of zfs_for_each() to walk all datasets in - * the system, but this would be very inefficient, especially - * since we would have to linearly search /etc/mnttab for each - * one. Instead, do one pass through /etc/mnttab looking for - * zfs entries and call zfs_unmount() for each one. - * - * Things get a little tricky if the administrator has created - * mountpoints beneath other ZFS filesystems. In this case, we - * have to unmount the deepest filesystems first. To accomplish - * this, we place all the mountpoints in an AVL tree sorted by - * the special type (dataset name), and walk the result in - * reverse to make sure to get any snapshots first. - */ - uu_avl_pool_t *pool; - uu_avl_t *tree; - unshare_unmount_node_t *node; - uu_avl_index_t idx; - uu_avl_walk_t *walk; - struct statfs *sfs; - int i, n; - - if (argc != 0) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - if ((pool = uu_avl_pool_create("unmount_pool", - sizeof (unshare_unmount_node_t), - offsetof(unshare_unmount_node_t, un_avlnode), - unshare_unmount_compare, - UU_DEFAULT)) == NULL) { - (void) fprintf(stderr, gettext("internal error: " - "out of memory\n")); - exit(1); - } - - if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { - (void) fprintf(stderr, gettext("internal error: " - "out of memory\n")); - exit(1); - } - - if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) { - (void) fprintf(stderr, gettext("internal error: " - "getmntinfo() failed\n")); - exit(1); - } - for (i = 0; i < n; i++) { - - /* ignore non-ZFS entries */ - if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0) - continue; - - /* ignore snapshots */ - if (strchr(sfs[i].f_mntfromname, '@') != NULL) - continue; - - if ((zhp = zfs_open(g_zfs, sfs[i].f_mntfromname, - ZFS_TYPE_FILESYSTEM)) == NULL) { - ret = 1; - continue; - } - - verify(zfs_prop_get(zhp, op == OP_SHARE ? - ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, - property, sizeof (property), NULL, NULL, - 0, B_FALSE) == 0); - - /* Ignore legacy mounts and shares */ - if ((op == OP_SHARE && - strcmp(property, "off") == 0) || - (op == OP_MOUNT && - strcmp(property, "legacy") == 0)) { - zfs_close(zhp); - continue; - } - - node = safe_malloc(sizeof (unshare_unmount_node_t)); - node->un_zhp = zhp; - - if ((node->un_mountp = strdup(sfs[i].f_mntonname)) == - NULL) { - (void) fprintf(stderr, gettext("internal error:" - " out of memory\n")); - exit(1); - } - - uu_avl_node_init(node, &node->un_avlnode, pool); - - if (uu_avl_find(tree, node, NULL, &idx) == NULL) { - uu_avl_insert(tree, node, idx); - } else { - zfs_close(node->un_zhp); - free(node->un_mountp); - free(node); - } - } - - /* - * Walk the AVL tree in reverse, unmounting each filesystem and - * removing it from the AVL tree in the process. - */ - if ((walk = uu_avl_walk_start(tree, - UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { - (void) fprintf(stderr, - gettext("internal error: out of memory")); - exit(1); - } - - while ((node = uu_avl_walk_next(walk)) != NULL) { - uu_avl_remove(tree, node); - - switch (op) { - case OP_SHARE: - if (zfs_unshare_nfs(node->un_zhp, - node->un_mountp) != 0) - ret = 1; - break; - - case OP_MOUNT: - if (zfs_unmount(node->un_zhp, - node->un_mountp, flags) != 0) - ret = 1; - break; - } - - zfs_close(node->un_zhp); - free(node->un_mountp); - free(node); - } - - uu_avl_walk_end(walk); - uu_avl_destroy(tree); - uu_avl_pool_destroy(pool); - - if (op == OP_SHARE) { - /* - * Finally, unshare any volumes shared via iSCSI. - */ - zfs_handle_t **dslist = NULL; - size_t i, count = 0; - - get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count); - - if (count != 0) { - qsort(dslist, count, sizeof (void *), - dataset_cmp); - - for (i = 0; i < count; i++) { - if (zfs_unshare_iscsi(dslist[i]) != 0) - ret = 1; - zfs_close(dslist[i]); - } - - free(dslist); - } - } - } else { - if (argc != 1) { - if (argc == 0) - (void) fprintf(stderr, - gettext("missing filesystem argument\n")); - else - (void) fprintf(stderr, - gettext("too many arguments\n")); - usage(B_FALSE); - } - - /* - * We have an argument, but it may be a full path or a ZFS - * filesystem. Pass full paths off to unmount_path() (shared by - * manual_unmount), otherwise open the filesystem and pass to - * zfs_unmount(). - */ - if (argv[0][0] == '/') - return (unshare_unmount_path(op, argv[0], - flags, B_FALSE)); - - types = ZFS_TYPE_FILESYSTEM; - if (op == OP_SHARE) - types |= ZFS_TYPE_VOLUME; - - if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) - return (1); - - if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { - verify(zfs_prop_get(zhp, op == OP_SHARE ? - ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, property, - sizeof (property), NULL, NULL, 0, B_FALSE) == 0); - - switch (op) { - case OP_SHARE: - if (strcmp(property, "off") == 0) { - (void) fprintf(stderr, gettext("cannot " - "unshare '%s': legacy share\n"), - zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("use " - "unshare(1M) to unshare this " - "filesystem\n")); - ret = 1; - } else if (!zfs_is_shared_nfs(zhp, NULL)) { - (void) fprintf(stderr, gettext("cannot " - "unshare '%s': not currently " - "shared\n"), zfs_get_name(zhp)); - ret = 1; - } else if (zfs_unshareall_nfs(zhp) != 0) { - ret = 1; - } - break; - - case OP_MOUNT: - if (strcmp(property, "legacy") == 0) { - (void) fprintf(stderr, gettext("cannot " - "unmount '%s': legacy " - "mountpoint\n"), zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("use " - "umount(1M) to unmount this " - "filesystem\n")); - ret = 1; - } else if (!zfs_is_mounted(zhp, NULL)) { - (void) fprintf(stderr, gettext("cannot " - "unmount '%s': not currently " - "mounted\n"), - zfs_get_name(zhp)); - ret = 1; - } else if (zfs_unmountall(zhp, flags) != 0) { - ret = 1; - } - break; - } - } else { - assert(op == OP_SHARE); - - verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, property, - sizeof (property), NULL, NULL, 0, B_FALSE) == 0); - - if (strcmp(property, "off") == 0) { - (void) fprintf(stderr, gettext("cannot unshare " - "'%s': 'shareiscsi' property not set\n"), - zfs_get_name(zhp)); - (void) fprintf(stderr, gettext("set " - "'shareiscsi' property or use " - "iscsitadm(1M) to share this volume\n")); - ret = 1; - } else if (!zfs_is_shared_iscsi(zhp)) { - (void) fprintf(stderr, gettext("cannot " - "unshare '%s': not currently shared\n"), - zfs_get_name(zhp)); - ret = 1; - } else if (zfs_unshare_iscsi(zhp) != 0) { - ret = 1; - } - } - - zfs_close(zhp); - } - - return (ret); -} - -/* - * zfs unmount -a - * zfs unmount filesystem - * - * Unmount all filesystems, or a specific ZFS filesystem. - */ -static int -zfs_do_unmount(int argc, char **argv) -{ - return (unshare_unmount(OP_MOUNT, argc, argv)); -} - -/* - * zfs unshare -a - * zfs unshare filesystem - * - * Unshare all filesystems, or a specific ZFS filesystem. - */ -static int -zfs_do_unshare(int argc, char **argv) -{ - return (unshare_unmount(OP_SHARE, argc, argv)); -} - -/* - * Attach/detach the given dataset to/from the given jail - */ -/* ARGSUSED */ -static int -do_jail(int argc, char **argv, int attach) -{ - zfs_handle_t *zhp; - int jailid, ret; - - /* check number of arguments */ - if (argc < 3) { - (void) fprintf(stderr, gettext("missing argument(s)\n")); - usage(B_FALSE); - } - if (argc > 3) { - (void) fprintf(stderr, gettext("too many arguments\n")); - usage(B_FALSE); - } - - jailid = atoi(argv[1]); - if (jailid == 0) { - (void) fprintf(stderr, gettext("invalid jailid\n")); - usage(B_FALSE); - } - - zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM); - if (zhp == NULL) - return (1); - - ret = (zfs_jail(zhp, jailid, attach) != 0); - - if (!ret) - zpool_log_history(g_zfs, argc, argv, argv[2], B_FALSE, B_FALSE); - - zfs_close(zhp); - return (ret); -} - -/* - * zfs jail jailid filesystem - * - * Attach the given dataset to the given jail - */ -/* ARGSUSED */ -static int -zfs_do_jail(int argc, char **argv) -{ - - return (do_jail(argc, argv, 1)); -} - -/* - * zfs unjail jailid filesystem - * - * Detach the given dataset from the given jail - */ -/* ARGSUSED */ -static int -zfs_do_unjail(int argc, char **argv) -{ - - return (do_jail(argc, argv, 0)); -} - -/* - * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is - * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. - */ -static int -manual_mount(int argc, char **argv) -{ - zfs_handle_t *zhp; - char mountpoint[ZFS_MAXPROPLEN]; - char mntopts[MNT_LINE_MAX] = { '\0' }; - int ret; - int c; - int flags = 0; - char *dataset, *path; - - /* check options */ - while ((c = getopt(argc, argv, ":mo:O")) != -1) { - switch (c) { - case 'o': - (void) strlcpy(mntopts, optarg, sizeof (mntopts)); - break; - case 'O': -#if 0 /* FreeBSD: No support for MS_OVERLAY. */ - flags |= MS_OVERLAY; -#endif - break; - case 'm': -#if 0 /* FreeBSD: No support for MS_NOMNTTAB. */ - flags |= MS_NOMNTTAB; -#endif - break; - case ':': - (void) fprintf(stderr, gettext("missing argument for " - "'%c' option\n"), optopt); - usage(B_FALSE); - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - (void) fprintf(stderr, gettext("usage: mount [-o opts] " - "<path>\n")); - return (2); - } - } - - argc -= optind; - argv += optind; - - /* check that we only have two arguments */ - if (argc != 2) { - if (argc == 0) - (void) fprintf(stderr, gettext("missing dataset " - "argument\n")); - else if (argc == 1) - (void) fprintf(stderr, - gettext("missing mountpoint argument\n")); - else - (void) fprintf(stderr, gettext("too many arguments\n")); - (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); - return (2); - } - - dataset = argv[0]; - path = argv[1]; - - /* try to open the dataset */ - if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) - return (1); - - (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, - sizeof (mountpoint), NULL, NULL, 0, B_FALSE); - - /* check for legacy mountpoint and complain appropriately */ - ret = 0; - if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { - if (zmount(dataset, path, flags, MNTTYPE_ZFS, - NULL, 0, mntopts, sizeof (mntopts)) != 0) { - (void) fprintf(stderr, gettext("mount failed: %s\n"), - strerror(errno)); - ret = 1; - } - } else { - (void) fprintf(stderr, gettext("filesystem '%s' cannot be " - "mounted using 'mount -F zfs'\n"), dataset); - (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " - "instead.\n"), path); - (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " - "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); - (void) fprintf(stderr, gettext("See zfs(1M) for more " - "information.\n")); - ret = 1; - } - - return (ret); -} - -/* - * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow - * unmounts of non-legacy filesystems, as this is the dominant administrative - * interface. - */ -static int -manual_unmount(int argc, char **argv) -{ - int flags = 0; - int c; - - /* check options */ - while ((c = getopt(argc, argv, "f")) != -1) { - switch (c) { - case 'f': - flags = MS_FORCE; - break; - case '?': - (void) fprintf(stderr, gettext("invalid option '%c'\n"), - optopt); - (void) fprintf(stderr, gettext("usage: unmount [-f] " - "<path>\n")); - return (2); - } - } - - argc -= optind; - argv += optind; - - /* check arguments */ - if (argc != 1) { - if (argc == 0) - (void) fprintf(stderr, gettext("missing path " - "argument\n")); - else - (void) fprintf(stderr, gettext("too many arguments\n")); - (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); - return (2); - } - - return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); -} - -static int -volcheck(zpool_handle_t *zhp, void *data) -{ - boolean_t isinit = *((boolean_t *)data); - - if (isinit) - return (zpool_create_zvol_links(zhp)); - else - return (zpool_remove_zvol_links(zhp)); -} - -/* - * Iterate over all pools in the system and either create or destroy /dev/zvol - * links, depending on the value of 'isinit'. - */ -static int -do_volcheck(boolean_t isinit) -{ - return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); -} - -int -main(int argc, char **argv) -{ - int ret; - int i; - char *progname; - char *cmdname; - - (void) setlocale(LC_ALL, ""); - (void) textdomain(TEXT_DOMAIN); - - opterr = 0; - - if ((g_zfs = libzfs_init()) == NULL) { - (void) fprintf(stderr, gettext("internal error: failed to " - "initialize ZFS library\n")); - return (1); - } - - libzfs_print_on_error(g_zfs, B_TRUE); - - if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { - (void) fprintf(stderr, gettext("internal error: unable to " - "open %s\n"), MNTTAB); - return (1); - } - - /* - * This command also doubles as the /etc/fs mount and unmount program. - * Determine if we should take this behavior based on argv[0]. - */ - progname = basename(argv[0]); - if (strcmp(progname, "mount") == 0) { - ret = manual_mount(argc, argv); - } else if (strcmp(progname, "umount") == 0) { - ret = manual_unmount(argc, argv); - } else { - /* - * Make sure the user has specified some command. - */ - if (argc < 2) { - (void) fprintf(stderr, gettext("missing command\n")); - usage(B_FALSE); - } - - cmdname = argv[1]; - - /* - * The 'umount' command is an alias for 'unmount' - */ - if (strcmp(cmdname, "umount") == 0) - cmdname = "unmount"; - - /* - * The 'recv' command is an alias for 'receive' - */ - if (strcmp(cmdname, "recv") == 0) - cmdname = "receive"; - - /* - * Special case '-?' - */ - if (strcmp(cmdname, "-?") == 0) - usage(B_TRUE); - - /* - * 'volinit' and 'volfini' do not appear in the usage message, - * so we have to special case them here. - */ - if (strcmp(cmdname, "volinit") == 0) - return (do_volcheck(B_TRUE)); - else if (strcmp(cmdname, "volfini") == 0) - return (do_volcheck(B_FALSE)); - - /* - * Run the appropriate command. - */ - for (i = 0; i < NCOMMAND; i++) { - if (command_table[i].name == NULL) - continue; - - if (strcmp(cmdname, command_table[i].name) == 0) { - current_command = &command_table[i]; - ret = command_table[i].func(argc - 1, argv + 1); - break; - } - } - - if (i == NCOMMAND) { - (void) fprintf(stderr, gettext("unrecognized " - "command '%s'\n"), cmdname); - usage(B_FALSE); - } - } - - (void) fclose(mnttab_file); - - libzfs_fini(g_zfs); - - /* - * The 'ZFS_ABORT' environment variable causes us to dump core on exit - * for the purposes of running ::findleaks. - */ - if (getenv("ZFS_ABORT") != NULL) { - (void) printf("dumping core by request\n"); - abort(); - } - - return (ret); -} |
