diff options
Diffstat (limited to 'usr/src/lib/libzfs/common/libzfs_dataset.c')
| -rw-r--r-- | usr/src/lib/libzfs/common/libzfs_dataset.c | 123 |
1 files changed, 108 insertions, 15 deletions
diff --git a/usr/src/lib/libzfs/common/libzfs_dataset.c b/usr/src/lib/libzfs/common/libzfs_dataset.c index da80c41623..bbb0acaa3d 100644 --- a/usr/src/lib/libzfs/common/libzfs_dataset.c +++ b/usr/src/lib/libzfs/common/libzfs_dataset.c @@ -105,7 +105,7 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, char what; (void) zfs_prop_get_table(); - if (dataset_namecheck(path, &why, &what) != 0) { + if (entity_namecheck(path, &why, &what) != 0) { if (hdl != NULL) { switch (why) { case NAME_ERR_TOOLONG: @@ -134,9 +134,10 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, "'%c' in name"), what); break; - case NAME_ERR_MULTIPLE_AT: + case NAME_ERR_MULTIPLE_DELIMITERS: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, - "multiple '@' delimiters in name")); + "multiple '@' and/or '#' delimiters in " + "name")); break; case NAME_ERR_NOLETTER: @@ -167,7 +168,7 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { if (hdl != NULL) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, - "snapshot delimiter '@' in filesystem name")); + "snapshot delimiter '@' is not expected here")); return (0); } @@ -178,6 +179,20 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, return (0); } + if (!(type & ZFS_TYPE_BOOKMARK) && strchr(path, '#') != NULL) { + if (hdl != NULL) + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "bookmark delimiter '#' is not expected here")); + return (0); + } + + if (type == ZFS_TYPE_BOOKMARK && strchr(path, '#') == NULL) { + if (hdl != NULL) + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "missing '#' delimiter in bookmark name")); + return (0); + } + if (modifying && strchr(path, '%') != NULL) { if (hdl != NULL) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, @@ -619,8 +634,36 @@ make_bookmark_handle(zfs_handle_t *parent, const char *path, return (zhp); } +struct zfs_open_bookmarks_cb_data { + const char *path; + zfs_handle_t *zhp; +}; + +static int +zfs_open_bookmarks_cb(zfs_handle_t *zhp, void *data) +{ + struct zfs_open_bookmarks_cb_data *dp = data; + + /* + * Is it the one we are looking for? + */ + if (strcmp(dp->path, zfs_get_name(zhp)) == 0) { + /* + * We found it. Save it and let the caller know we are done. + */ + dp->zhp = zhp; + return (EEXIST); + } + + /* + * Not found. Close the handle and ask for another one. + */ + zfs_close(zhp); + return (0); +} + /* - * Opens the given snapshot, filesystem, or volume. The 'types' + * Opens the given snapshot, bookmark, filesystem, or volume. The 'types' * argument is a mask of acceptable types. The function will print an * appropriate error message and return NULL if it can't be opened. */ @@ -629,6 +672,7 @@ zfs_open(libzfs_handle_t *hdl, const char *path, int types) { zfs_handle_t *zhp; char errbuf[1024]; + char *bookp; (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); @@ -636,20 +680,68 @@ zfs_open(libzfs_handle_t *hdl, const char *path, int types) /* * Validate the name before we even try to open it. */ - if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { - zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, - "invalid dataset name")); + if (!zfs_validate_name(hdl, path, types, B_FALSE)) { (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); return (NULL); } /* - * Try to get stats for the dataset, which will tell us if it exists. + * Bookmarks needs to be handled separately. */ - errno = 0; - if ((zhp = make_dataset_handle(hdl, path)) == NULL) { - (void) zfs_standard_error(hdl, errno, errbuf); - return (NULL); + bookp = strchr(path, '#'); + if (bookp == NULL) { + /* + * Try to get stats for the dataset, which will tell us if it + * exists. + */ + errno = 0; + if ((zhp = make_dataset_handle(hdl, path)) == NULL) { + (void) zfs_standard_error(hdl, errno, errbuf); + return (NULL); + } + } else { + char dsname[ZFS_MAX_DATASET_NAME_LEN]; + zfs_handle_t *pzhp; + struct zfs_open_bookmarks_cb_data cb_data = {path, NULL}; + + /* + * We need to cut out '#' and everything after '#' + * to get the parent dataset name only. + */ + assert(bookp - path < sizeof (dsname)); + (void) strncpy(dsname, path, bookp - path); + dsname[bookp - path] = '\0'; + + /* + * Create handle for the parent dataset. + */ + errno = 0; + if ((pzhp = make_dataset_handle(hdl, dsname)) == NULL) { + (void) zfs_standard_error(hdl, errno, errbuf); + return (NULL); + } + + /* + * Iterate bookmarks to find the right one. + */ + errno = 0; + if ((zfs_iter_bookmarks(pzhp, zfs_open_bookmarks_cb, + &cb_data) == 0) && (cb_data.zhp == NULL)) { + (void) zfs_error(hdl, EZFS_NOENT, errbuf); + zfs_close(pzhp); + return (NULL); + } + if (cb_data.zhp == NULL) { + (void) zfs_standard_error(hdl, errno, errbuf); + zfs_close(pzhp); + return (NULL); + } + zhp = cb_data.zhp; + + /* + * Cleanup. + */ + zfs_close(pzhp); } if (!(types & zhp->zfs_type)) { @@ -1601,8 +1693,9 @@ zfs_prop_set_list(zfs_handle_t *zhp, nvlist_t *props) * its canmount property to 'on' or 'noauto'. We only use * the changelist logic to unmount when setting canmount=off. */ - if (!(prop == ZFS_PROP_CANMOUNT && - fnvpair_value_uint64(elem) != ZFS_CANMOUNT_OFF)) { + if (prop != ZFS_PROP_CANMOUNT || + (fnvpair_value_uint64(elem) == ZFS_CANMOUNT_OFF && + zfs_is_mounted(zhp, NULL))) { cls[cl_idx] = changelist_gather(zhp, prop, 0, 0); if (cls[cl_idx] == NULL) goto error; |