* Boston, MA 021110-1307, USA.
*/
+#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "utils.h"
#include "help.h"
-static int is_subvolume_cleaned(int fd, u64 subvolid)
+static int wait_for_subvolume_cleaning(int fd, size_t count, uint64_t *ids,
+ int sleep_interval)
{
- int ret;
- struct btrfs_ioctl_search_args args;
- struct btrfs_ioctl_search_key *sk = &args.key;
-
- sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
- sk->min_objectid = subvolid;
- sk->max_objectid = subvolid;
- sk->min_type = BTRFS_ROOT_ITEM_KEY;
- sk->max_type = BTRFS_ROOT_ITEM_KEY;
- sk->min_offset = 0;
- sk->max_offset = (u64)-1;
- sk->min_transid = 0;
- sk->max_transid = (u64)-1;
- sk->nr_items = 1;
-
- ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
- if (ret < 0)
- return -errno;
-
- if (sk->nr_items == 0)
- return 1;
-
- return 0;
-}
-
-static int wait_for_subvolume_cleaning(int fd, int count, u64 *ids,
- int sleep_interval)
-{
- int ret;
- int i;
+ size_t i;
+ enum btrfs_util_error err;
while (1) {
int clean = 1;
for (i = 0; i < count; i++) {
if (!ids[i])
continue;
- ret = is_subvolume_cleaned(fd, ids[i]);
- if (ret < 0) {
- error(
- "cannot read status of dead subvolume %llu: %s",
- (unsigned long long)ids[i], strerror(-ret));
- return ret;
- }
- if (ret) {
- printf("Subvolume id %llu is gone\n", ids[i]);
+ err = btrfs_util_subvolume_info_fd(fd, ids[i], NULL);
+ if (err == BTRFS_UTIL_ERROR_SUBVOLUME_NOT_FOUND) {
+ printf("Subvolume id %" PRIu64 " is gone\n",
+ ids[i]);
ids[i] = 0;
+ } else if (err) {
+ error_btrfs_util(err);
+ return -errno;
} else {
clean = 0;
}
int res, ret = 0;
int cnt;
int fd = -1;
- struct btrfs_ioctl_vol_args args;
char *dname, *vname, *cpath;
char *dupdname = NULL;
char *dupvname = NULL;
char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
struct seen_fsid *seen_fsid_hash[SEEN_FSID_HASH_SIZE] = { NULL, };
enum { COMMIT_AFTER = 1, COMMIT_EACH = 2 };
+ enum btrfs_util_error err;
while (1) {
int c;
again:
path = argv[cnt];
- res = test_issubvolume(path);
- if (res < 0) {
- error("cannot access subvolume %s: %s", path, strerror(-res));
- ret = 1;
- goto out;
- }
- if (!res) {
- error("not a subvolume: %s", path);
+ err = btrfs_util_is_subvolume(path);
+ if (err) {
+ error_btrfs_util(err);
ret = 1;
goto out;
}
printf("Delete subvolume (%s): '%s/%s'\n",
commit_mode == COMMIT_EACH || (commit_mode == COMMIT_AFTER && cnt + 1 == argc)
? "commit" : "no-commit", dname, vname);
- memset(&args, 0, sizeof(args));
- strncpy_null(args.name, vname);
- res = ioctl(fd, BTRFS_IOC_SNAP_DESTROY, &args);
- if(res < 0 ){
- error("cannot delete '%s/%s': %m", dname, vname);
+
+ err = btrfs_util_delete_subvolume_fd(fd, vname, 0);
+ if (err) {
+ error_btrfs_util(err);
ret = 1;
goto out;
}
error("unable to get fsid for '%s': %s",
path, strerror(-res));
error(
- "delete suceeded but commit may not be done in the end");
+ "delete succeeded but commit may not be done in the end");
ret = 1;
goto out;
}
char *dupdir = NULL;
char *newname;
char *dstdir;
+ enum btrfs_util_error err;
struct btrfs_ioctl_vol_args_v2 args;
struct btrfs_qgroup_inherit *inherit = NULL;
DIR *dirstream1 = NULL, *dirstream2 = NULL;
dst = argv[optind + 1];
retval = 1; /* failure */
- res = test_issubvolume(subvol);
- if (res < 0) {
- error("cannot access subvolume %s: %s", subvol, strerror(-res));
- goto out;
- }
- if (!res) {
- error("not a subvolume: %s", subvol);
+ err = btrfs_util_is_subvolume(subvol);
+ if (err) {
+ error_btrfs_util(err);
goto out;
}
static int cmd_subvol_get_default(int argc, char **argv)
{
int fd = -1;
- int ret;
- char *subvol;
- struct btrfs_list_filter_set *filter_set;
- u64 default_id;
+ int ret = 1;
+ uint64_t default_id;
DIR *dirstream = NULL;
+ enum btrfs_util_error err;
+ struct btrfs_util_subvolume_info subvol;
+ char *path;
clean_args_no_options(argc, argv, cmd_subvol_get_default_usage);
if (check_argc_exact(argc - optind, 1))
usage(cmd_subvol_get_default_usage);
- subvol = argv[1];
- fd = btrfs_open_dir(subvol, &dirstream, 1);
+ fd = btrfs_open_dir(argv[1], &dirstream, 1);
if (fd < 0)
return 1;
- ret = btrfs_list_get_default_subvolume(fd, &default_id);
- if (ret) {
- error("failed to look up default subvolume: %m");
- goto out;
- }
-
- ret = 1;
- if (default_id == 0) {
- error("'default' dir item not found");
+ err = btrfs_util_get_default_subvolume_fd(fd, &default_id);
+ if (err) {
+ error_btrfs_util(err);
goto out;
}
goto out;
}
- filter_set = btrfs_list_alloc_filter_set();
- btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_ROOTID,
- default_id);
+ err = btrfs_util_subvolume_info_fd(fd, default_id, &subvol);
+ if (err) {
+ error_btrfs_util(err);
+ goto out;
+ }
- /* by default we shall print the following columns*/
- btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
- btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
- btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
- btrfs_list_setup_print_column(BTRFS_LIST_PATH);
+ err = btrfs_util_subvolume_path_fd(fd, default_id, &path);
+ if (err) {
+ error_btrfs_util(err);
+ goto out;
+ }
- ret = btrfs_list_subvols_print(fd, filter_set, NULL,
- BTRFS_LIST_LAYOUT_DEFAULT, 1, NULL);
+ printf("ID %" PRIu64 " gen %" PRIu64 " top level %" PRIu64 " path %s\n",
+ subvol.id, subvol.generation, subvol.parent_id, path);
- if (filter_set)
- free(filter_set);
+ free(path);
+
+ ret = 0;
out:
close_file_or_dir(fd, dirstream);
- return !!ret;
+ return ret;
}
static const char * const cmd_subvol_set_default_usage[] = {
static int cmd_subvol_set_default(int argc, char **argv)
{
- int ret=0, fd;
- u64 objectid;
- char *path;
- char *subvolid;
- DIR *dirstream = NULL;
+ u64 objectid;
+ char *path;
+ enum btrfs_util_error err;
clean_args_no_options(argc, argv, cmd_subvol_set_default_usage);
if (argc - optind == 1) {
/* path to the subvolume is specified */
+ objectid = 0;
path = argv[optind];
-
- ret = test_issubvolume(path);
- if (ret < 0) {
- error("stat error: %s", strerror(-ret));
- return 1;
- } else if (!ret) {
- error("'%s' is not a subvolume", path);
- return 1;
- }
-
- fd = btrfs_open_dir(path, &dirstream, 1);
- if (fd < 0)
- return 1;
-
- ret = lookup_path_rootid(fd, &objectid);
- if (ret) {
- error("unable to get subvol id: %s", strerror(-ret));
- close_file_or_dir(fd, dirstream);
- return 1;
- }
} else {
/* subvol id and path to the filesystem are specified */
- subvolid = argv[optind];
+ objectid = arg_strtou64(argv[optind]);
path = argv[optind + 1];
- objectid = arg_strtou64(subvolid);
-
- fd = btrfs_open_dir(path, &dirstream, 1);
- if (fd < 0)
- return 1;
}
- ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid);
- close_file_or_dir(fd, dirstream);
- if (ret < 0) {
- error("unable to set a new default subvolume: %m");
+ err = btrfs_util_set_default_subvolume(path, objectid);
+ if (err) {
+ error_btrfs_util(err);
return 1;
}
return 0;
subvol = argv[optind];
last_gen = arg_strtou64(argv[optind + 1]);
- ret = test_issubvolume(subvol);
- if (ret < 0) {
- error("cannot access subvolume %s: %s", subvol, strerror(-ret));
- return 1;
- }
- if (!ret) {
- error("not a subvolume: %s", subvol);
+ err = btrfs_util_is_subvolume(subvol);
+ if (err) {
+ error_btrfs_util(err);
return 1;
}
static int cmd_subvol_show(int argc, char **argv)
{
- struct root_info get_ri;
- struct btrfs_list_filter_set *filter_set = NULL;
char tstr[256];
char uuidparse[BTRFS_UUID_UNPARSED_SIZE];
char *fullpath = NULL;
- char raw_prefix[] = "\t\t\t\t";
int fd = -1;
int ret = 1;
DIR *dirstream1 = NULL;
int by_rootid = 0;
int by_uuid = 0;
- u64 rootid_arg;
+ u64 rootid_arg = 0;
u8 uuid_arg[BTRFS_UUID_SIZE];
+ struct btrfs_util_subvolume_iterator *iter;
+ struct btrfs_util_subvolume_info subvol;
+ char *subvol_path = NULL;
+ enum btrfs_util_error err;
while (1) {
int c;
usage(cmd_subvol_show_usage);
}
- memset(&get_ri, 0, sizeof(get_ri));
fullpath = realpath(argv[optind], NULL);
if (!fullpath) {
error("cannot find real path for '%s': %m", argv[optind]);
goto out;
}
- if (by_rootid) {
- ret = get_subvol_info_by_rootid(fullpath, &get_ri, rootid_arg);
- } else if (by_uuid) {
- ret = get_subvol_info_by_uuid(fullpath, &get_ri, uuid_arg);
- } else {
- ret = get_subvol_info(fullpath, &get_ri);
+ fd = open_file_or_dir(fullpath, &dirstream1);
+ if (fd < 0) {
+ error("can't access '%s'", fullpath);
+ goto out;
}
- if (ret) {
- if (ret < 0) {
- error("Failed to get subvol info %s: %s",
- fullpath, strerror(-ret));
- } else {
- error("Failed to get subvol info %s: %d",
- fullpath, ret);
+ if (by_uuid) {
+ err = btrfs_util_create_subvolume_iterator_fd(fd,
+ BTRFS_FS_TREE_OBJECTID,
+ 0, &iter);
+ if (err) {
+ error_btrfs_util(err);
+ goto out;
+ }
+
+ for (;;) {
+ err = btrfs_util_subvolume_iterator_next_info(iter,
+ &subvol_path,
+ &subvol);
+ if (err == BTRFS_UTIL_ERROR_STOP_ITERATION) {
+ uuid_unparse(uuid_arg, uuidparse);
+ error("can't find uuid '%s' on '%s'", uuidparse,
+ fullpath);
+ btrfs_util_destroy_subvolume_iterator(iter);
+ goto out;
+ } else if (err) {
+ error_btrfs_util(err);
+ btrfs_util_destroy_subvolume_iterator(iter);
+ goto out;
+ }
+
+ if (uuid_compare(subvol.uuid, uuid_arg) == 0)
+ break;
+
+ free(subvol_path);
}
- return ret;
+ btrfs_util_destroy_subvolume_iterator(iter);
+ } else {
+ /*
+ * If !by_rootid, rootid_arg = 0, which means find the
+ * subvolume ID of the fd and use that.
+ */
+ err = btrfs_util_subvolume_info_fd(fd, rootid_arg, &subvol);
+ if (err) {
+ error_btrfs_util(err);
+ goto out;
+ }
+
+ err = btrfs_util_subvolume_path_fd(fd, subvol.id, &subvol_path);
+ if (err) {
+ error_btrfs_util(err);
+ goto out;
+ }
+
}
/* print the info */
- printf("%s\n", get_ri.full_path);
- printf("\tName: \t\t\t%s\n", get_ri.name);
+ printf("%s\n", subvol.id == BTRFS_FS_TREE_OBJECTID ? "/" : subvol_path);
+ printf("\tName: \t\t\t%s\n",
+ (subvol.id == BTRFS_FS_TREE_OBJECTID ? "<FS_TREE>" :
+ basename(subvol_path)));
- if (uuid_is_null(get_ri.uuid))
+ if (uuid_is_null(subvol.uuid))
strcpy(uuidparse, "-");
else
- uuid_unparse(get_ri.uuid, uuidparse);
+ uuid_unparse(subvol.uuid, uuidparse);
printf("\tUUID: \t\t\t%s\n", uuidparse);
- if (uuid_is_null(get_ri.puuid))
+ if (uuid_is_null(subvol.parent_uuid))
strcpy(uuidparse, "-");
else
- uuid_unparse(get_ri.puuid, uuidparse);
+ uuid_unparse(subvol.parent_uuid, uuidparse);
printf("\tParent UUID: \t\t%s\n", uuidparse);
- if (uuid_is_null(get_ri.ruuid))
+ if (uuid_is_null(subvol.received_uuid))
strcpy(uuidparse, "-");
else
- uuid_unparse(get_ri.ruuid, uuidparse);
+ uuid_unparse(subvol.received_uuid, uuidparse);
printf("\tReceived UUID: \t\t%s\n", uuidparse);
- if (get_ri.otime) {
+ if (subvol.otime.tv_sec) {
struct tm tm;
- localtime_r(&get_ri.otime, &tm);
+ localtime_r(&subvol.otime.tv_sec, &tm);
strftime(tstr, 256, "%Y-%m-%d %X %z", &tm);
} else
strcpy(tstr, "-");
printf("\tCreation time: \t\t%s\n", tstr);
- printf("\tSubvolume ID: \t\t%llu\n", get_ri.root_id);
- printf("\tGeneration: \t\t%llu\n", get_ri.gen);
- printf("\tGen at creation: \t%llu\n", get_ri.ogen);
- printf("\tParent ID: \t\t%llu\n", get_ri.ref_tree);
- printf("\tTop level ID: \t\t%llu\n", get_ri.top_id);
+ printf("\tSubvolume ID: \t\t%" PRIu64 "\n", subvol.id);
+ printf("\tGeneration: \t\t%" PRIu64 "\n", subvol.generation);
+ printf("\tGen at creation: \t%" PRIu64 "\n", subvol.otransid);
+ printf("\tParent ID: \t\t%" PRIu64 "\n", subvol.parent_id);
+ printf("\tTop level ID: \t\t%" PRIu64 "\n", subvol.parent_id);
- if (get_ri.flags & BTRFS_ROOT_SUBVOL_RDONLY)
+ if (subvol.flags & BTRFS_ROOT_SUBVOL_RDONLY)
printf("\tFlags: \t\t\treadonly\n");
else
printf("\tFlags: \t\t\t-\n");
/* print the snapshots of the given subvol if any*/
printf("\tSnapshot(s):\n");
- filter_set = btrfs_list_alloc_filter_set();
- btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_BY_PARENT,
- (u64)(unsigned long)get_ri.uuid);
- btrfs_list_setup_print_column(BTRFS_LIST_PATH);
- fd = open_file_or_dir(fullpath, &dirstream1);
- if (fd < 0) {
- fprintf(stderr, "ERROR: can't access '%s'\n", fullpath);
- goto out;
+ err = btrfs_util_create_subvolume_iterator_fd(fd,
+ BTRFS_FS_TREE_OBJECTID, 0,
+ &iter);
+
+ for (;;) {
+ struct btrfs_util_subvolume_info subvol2;
+ char *path;
+
+ err = btrfs_util_subvolume_iterator_next_info(iter, &path, &subvol2);
+ if (err == BTRFS_UTIL_ERROR_STOP_ITERATION) {
+ break;
+ } else if (err) {
+ error_btrfs_util(err);
+ btrfs_util_destroy_subvolume_iterator(iter);
+ goto out;
+ }
+
+ if (uuid_compare(subvol2.parent_uuid, subvol.uuid) == 0)
+ printf("\t\t\t\t%s\n", path);
+
+ free(path);
}
- btrfs_list_subvols_print(fd, filter_set, NULL, BTRFS_LIST_LAYOUT_RAW,
- 1, raw_prefix);
+ btrfs_util_destroy_subvolume_iterator(iter);
+ ret = 0;
out:
- /* clean up */
- free(get_ri.path);
- free(get_ri.name);
- free(get_ri.full_path);
- free(filter_set);
-
+ free(subvol_path);
close_file_or_dir(fd, dirstream1);
free(fullpath);
return !!ret;
NULL
};
-#if 0
-/*
- * If we're looking for any dead subvolume, take a shortcut and look
- * for any ORPHAN_ITEMs in the tree root
- */
-static int fs_has_dead_subvolumes(int fd)
-{
- int ret;
- struct btrfs_ioctl_search_args args;
- struct btrfs_ioctl_search_key *sk = &args.key;
- struct btrfs_ioctl_search_header sh;
- u64 min_subvolid = 0;
-
-again:
- sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
- sk->min_objectid = BTRFS_ORPHAN_OBJECTID;
- sk->max_objectid = BTRFS_ORPHAN_OBJECTID;
- sk->min_type = BTRFS_ORPHAN_ITEM_KEY;
- sk->max_type = BTRFS_ORPHAN_ITEM_KEY;
- sk->min_offset = min_subvolid;
- sk->max_offset = (u64)-1;
- sk->min_transid = 0;
- sk->max_transid = (u64)-1;
- sk->nr_items = 1;
-
- ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
- if (ret < 0)
- return -errno;
-
- if (!sk->nr_items)
- return 0;
-
- memcpy(&sh, args.buf, sizeof(sh));
- min_subvolid = sh.offset;
-
- /*
- * Verify that the root item is really there and we haven't hit
- * a stale orphan
- */
- sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
- sk->min_objectid = min_subvolid;
- sk->max_objectid = min_subvolid;
- sk->min_type = BTRFS_ROOT_ITEM_KEY;
- sk->max_type = BTRFS_ROOT_ITEM_KEY;
- sk->min_offset = 0;
- sk->max_offset = (u64)-1;
- sk->min_transid = 0;
- sk->max_transid = (u64)-1;
- sk->nr_items = 1;
-
- ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
- if (ret < 0)
- return -errno;
-
- /*
- * Stale orphan, try the next one
- */
- if (!sk->nr_items) {
- min_subvolid++;
- goto again;
- }
-
- return 1;
-}
-#endif
-
-#define SUBVOL_ID_BATCH 1024
-
-/*
- * Enumerate all dead subvolumes that exist in the filesystem.
- * Fill @ids and reallocate to bigger size if needed.
- */
-static int enumerate_dead_subvols(int fd, u64 **ids)
-{
- int ret;
- struct btrfs_ioctl_search_args args;
- struct btrfs_ioctl_search_key *sk = &args.key;
- int idx = 0;
- int count = 0;
-
- memset(&args, 0, sizeof(args));
-
- sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
- sk->min_objectid = BTRFS_ORPHAN_OBJECTID;
- sk->max_objectid = BTRFS_ORPHAN_OBJECTID;
- sk->min_type = BTRFS_ORPHAN_ITEM_KEY;
- sk->max_type = BTRFS_ORPHAN_ITEM_KEY;
- sk->min_offset = 0;
- sk->max_offset = (u64)-1;
- sk->min_transid = 0;
- sk->max_transid = (u64)-1;
- sk->nr_items = 4096;
-
- *ids = NULL;
- while (1) {
- struct btrfs_ioctl_search_header *sh;
- unsigned long off;
- int i;
-
- ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
- if (ret < 0)
- return -errno;
-
- if (!sk->nr_items)
- return idx;
-
- off = 0;
- for (i = 0; i < sk->nr_items; i++) {
- sh = (struct btrfs_ioctl_search_header*)(args.buf + off);
- off += sizeof(*sh);
-
- if (btrfs_search_header_type(sh)
- == BTRFS_ORPHAN_ITEM_KEY) {
- if (idx >= count) {
- u64 *newids;
-
- count += SUBVOL_ID_BATCH;
- newids = (u64*)realloc(*ids,
- count * sizeof(u64));
- if (!newids)
- return -ENOMEM;
- *ids = newids;
- }
- (*ids)[idx] = btrfs_search_header_offset(sh);
- idx++;
- }
- off += btrfs_search_header_len(sh);
-
- sk->min_objectid = btrfs_search_header_objectid(sh);
- sk->min_type = btrfs_search_header_type(sh);
- sk->min_offset = btrfs_search_header_offset(sh);
- }
- if (sk->min_offset < (u64)-1)
- sk->min_offset++;
- else
- break;
- if (sk->min_type != BTRFS_ORPHAN_ITEM_KEY)
- break;
- if (sk->min_objectid != BTRFS_ORPHAN_OBJECTID)
- break;
- }
-
- return idx;
-}
-
static int cmd_subvol_sync(int argc, char **argv)
{
int fd = -1;
- int i;
int ret = 1;
DIR *dirstream = NULL;
- u64 *ids = NULL;
- int id_count;
+ uint64_t *ids = NULL;
+ size_t id_count, i;
int sleep_interval = 1;
+ enum btrfs_util_error err;
while (1) {
int c = getopt(argc, argv, "s:");
id_count = argc - optind;
if (!id_count) {
- id_count = enumerate_dead_subvols(fd, &ids);
- if (id_count < 0) {
- error("can't enumerate dead subvolumes: %s",
- strerror(-id_count));
+ err = btrfs_util_deleted_subvolumes_fd(fd, &ids, &id_count);
+ if (err) {
+ error_btrfs_util(err);
ret = 1;
goto out;
}
goto out;
}
} else {
- ids = (u64*)malloc(id_count * sizeof(u64));
+ ids = malloc(id_count * sizeof(uint64_t));
if (!ids) {
error("not enough memory");
ret = 1;
arg = argv[optind + i];
errno = 0;
id = strtoull(arg, NULL, 10);
- if (errno < 0) {
+ if (errno) {
error("unrecognized subvolume id %s", arg);
ret = 1;
goto out;
}
- if (id < BTRFS_FIRST_FREE_OBJECTID
- || id > BTRFS_LAST_FREE_OBJECTID) {
+ if (id < BTRFS_FIRST_FREE_OBJECTID ||
+ id > BTRFS_LAST_FREE_OBJECTID) {
error("subvolume id %s out of range", arg);
ret = 1;
goto out;
projects / platform / upstream / btrfs-progs.git / blobdiff