diff options
Diffstat (limited to 'cmds-inspect.c')
| -rw-r--r-- | cmds-inspect.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/cmds-inspect.c b/cmds-inspect.c index 77617596..30b41fc1 100644 --- a/cmds-inspect.c +++ b/cmds-inspect.c @@ -24,6 +24,8 @@ #include "kerncompat.h" #include "ioctl.h" #include "utils.h" +#include "ctree.h" +#include "send-utils.h" #include "commands.h" #include "btrfs-list.h" @@ -253,12 +255,56 @@ out: return ret; } +static const char * const cmd_subvolid_resolve_usage[] = { + "btrfs inspect-internal subvolid-resolve <subvolid> <path>", + "Get file system paths for the given subvolume ID.", + NULL +}; + +static int cmd_subvolid_resolve(int argc, char **argv) +{ + int ret; + int fd = -1; + u64 subvol_id; + char path[BTRFS_PATH_NAME_MAX + 1]; + + if (check_argc_exact(argc, 3)) + usage(cmd_subvolid_resolve_usage); + + fd = open_file_or_dir(argv[2]); + if (fd < 0) { + fprintf(stderr, "ERROR: can't access '%s'\n", argv[2]); + ret = -ENOENT; + goto out; + } + + subvol_id = atoll(argv[1]); + ret = btrfs_subvolid_resolve(fd, path, sizeof(path), subvol_id); + + if (ret) { + fprintf(stderr, + "%s: btrfs_subvolid_resolve(subvol_id %llu) failed with ret=%d\n", + argv[0], (unsigned long long)subvol_id, ret); + goto out; + } + + path[BTRFS_PATH_NAME_MAX] = '\0'; + printf("%s\n", path); + +out: + if (fd >= 0) + close(fd); + return ret ? 1 : 0; +} + const struct cmd_group inspect_cmd_group = { inspect_cmd_group_usage, NULL, { { "inode-resolve", cmd_inode_resolve, cmd_inode_resolve_usage, NULL, 0 }, { "logical-resolve", cmd_logical_resolve, cmd_logical_resolve_usage, NULL, 0 }, + { "subvolid-resolve", cmd_subvolid_resolve, + cmd_subvolid_resolve_usage, NULL, 0 }, { 0, 0, 0, 0, 0 } } }; |