X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=cmds-filesystem.c;h=467aff118e1511c1345a01814875aec5656adec5;hb=c9581107856ac932817c4bb832042c968af45394;hp=29ed7cb200dc856a8c8af43bc7ff643ea62dd844;hpb=633dc6f80f201afdf5b8524ae377187d58f0ef3b;p=platform%2Fupstream%2Fbtrfs-progs.git diff --git a/cmds-filesystem.c b/cmds-filesystem.c index 29ed7cb..467aff1 100644 --- a/cmds-filesystem.c +++ b/cmds-filesystem.c @@ -30,91 +30,20 @@ #include "kerncompat.h" #include "ctree.h" -#include "ioctl.h" #include "utils.h" #include "volumes.h" #include "commands.h" #include "cmds-fi-usage.h" #include "list_sort.h" #include "disk-io.h" - +#include "help.h" /* * for btrfs fi show, we maintain a hash of fsids we've already printed. * This way we don't print dups if a given FS is mounted more than once. */ -#define SEEN_FSID_HASH_SIZE 256 - -struct seen_fsid { - u8 fsid[BTRFS_FSID_SIZE]; - struct seen_fsid *next; -}; - static struct seen_fsid *seen_fsid_hash[SEEN_FSID_HASH_SIZE] = {NULL,}; -static int is_seen_fsid(u8 *fsid) -{ - u8 hash = fsid[0]; - int slot = hash % SEEN_FSID_HASH_SIZE; - struct seen_fsid *seen = seen_fsid_hash[slot]; - - return seen ? 1 : 0; -} - -static int add_seen_fsid(u8 *fsid) -{ - u8 hash = fsid[0]; - int slot = hash % SEEN_FSID_HASH_SIZE; - struct seen_fsid *seen = seen_fsid_hash[slot]; - struct seen_fsid *alloc; - - if (!seen) - goto insert; - - while (1) { - if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0) - return -EEXIST; - - if (!seen->next) - break; - - seen = seen->next; - } - -insert: - - alloc = malloc(sizeof(*alloc)); - if (!alloc) - return -ENOMEM; - - alloc->next = NULL; - memcpy(alloc->fsid, fsid, BTRFS_FSID_SIZE); - - if (seen) - seen->next = alloc; - else - seen_fsid_hash[slot] = alloc; - - return 0; -} - -static void free_seen_fsid(void) -{ - int slot; - struct seen_fsid *seen; - struct seen_fsid *next; - - for (slot = 0; slot < SEEN_FSID_HASH_SIZE; slot++) { - seen = seen_fsid_hash[slot]; - while (seen) { - next = seen->next; - free(seen); - seen = next; - } - seen_fsid_hash[slot] = NULL; - } -} - static const char * const filesystem_cmd_group_usage[] = { "btrfs filesystem [] []", NULL @@ -141,8 +70,8 @@ static int get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret) sargs->total_spaces = 0; ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs); - if (ret) { - error("cannot get space info: %s\n", strerror(errno)); + if (ret < 0) { + error("cannot get space info: %m"); free(sargs); return -errno; } @@ -162,9 +91,9 @@ static int get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret) sargs->space_slots = count; sargs->total_spaces = 0; ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs); - if (ret) { - error("cannot get space info with %llu slots: %s", - count, strerror(errno)); + if (ret < 0) { + error("cannot get space info with %llu slots: %m", + count); free(sargs); return -errno; } @@ -197,10 +126,12 @@ static int cmd_filesystem_df(int argc, char **argv) unit_mode = get_unit_mode_from_arg(&argc, argv, 1); - if (argc != 2 || argv[1][0] == '-') + clean_args_no_options(argc, argv, cmd_filesystem_df_usage); + + if (check_argc_exact(argc - optind, 1)) usage(cmd_filesystem_df_usage); - path = argv[1]; + path = argv[optind]; fd = btrfs_open_dir(path, &dirstream, 1); if (fd < 0) @@ -219,7 +150,7 @@ static int cmd_filesystem_df(int argc, char **argv) return !!ret; } -static int match_search_item_kernel(__u8 *fsid, char *mnt, char *label, +static int match_search_item_kernel(u8 *fsid, char *mnt, char *label, char *search) { char uuidbuf[BTRFS_UUID_UNPARSED_SIZE]; @@ -239,10 +170,9 @@ static int match_search_item_kernel(__u8 *fsid, char *mnt, char *label, return 0; } -static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search) +static int uuid_search(struct btrfs_fs_devices *fs_devices, const char *search) { char uuidbuf[BTRFS_UUID_UNPARSED_SIZE]; - struct list_head *cur; struct btrfs_device *device; int search_len = strlen(search); @@ -251,8 +181,7 @@ static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search) if (!strncmp(uuidbuf, search, search_len)) return 1; - list_for_each(cur, &fs_devices->devices) { - device = list_entry(cur, struct btrfs_device, dev_list); + list_for_each_entry(device, &fs_devices->devices, dev_list) { if ((device->label && strcmp(device->label, search) == 0) || strcmp(device->name, search) == 0) return 1; @@ -346,7 +275,7 @@ static void print_one_uuid(struct btrfs_fs_devices *fs_devices, u64 devs_found = 0; u64 total; - if (add_seen_fsid(fs_devices->fsid)) + if (add_seen_fsid(fs_devices->fsid, seen_fsid_hash, -1, NULL)) return; uuid_unparse(fs_devices->fsid, uuidbuf); @@ -393,7 +322,7 @@ static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info, struct btrfs_ioctl_dev_info_args *tmp_dev_info; int ret; - ret = add_seen_fsid(fs_info->fsid); + ret = add_seen_fsid(fs_info->fsid, seen_fsid_hash, -1, NULL); if (ret == -EEXIST) return 0; else if (ret) @@ -455,17 +384,17 @@ static int btrfs_scan_kernel(void *search, unsigned unit_mode) memset(label, 0, sizeof(label)); while ((mnt = getmntent(f)) != NULL) { + free(dev_info_arg); + dev_info_arg = NULL; if (strcmp(mnt->mnt_type, "btrfs")) continue; ret = get_fs_info(mnt->mnt_dir, &fs_info_arg, &dev_info_arg); - if (ret) { - kfree(dev_info_arg); + if (ret) goto out; - } /* skip all fs already shown as mounted fs */ - if (is_seen_fsid(fs_info_arg.fsid)) + if (is_seen_fsid(fs_info_arg.fsid, seen_fsid_hash)) continue; ret = get_label_mounted(mnt->mnt_dir, label); @@ -474,14 +403,11 @@ static int btrfs_scan_kernel(void *search, unsigned unit_mode) ret = get_label_unmounted( (const char *)dev_info_arg->path, label); - if (ret) { - kfree(dev_info_arg); + if (ret) goto out; - } + if (search && !match_search_item_kernel(fs_info_arg.fsid, mnt->mnt_dir, label, search)) { - kfree(dev_info_arg); - dev_info_arg = NULL; continue; } @@ -489,48 +415,20 @@ static int btrfs_scan_kernel(void *search, unsigned unit_mode) if ((fd != -1) && !get_df(fd, &space_info_arg)) { print_one_fs(&fs_info_arg, dev_info_arg, space_info_arg, label, unit_mode); - kfree(space_info_arg); + free(space_info_arg); memset(label, 0, sizeof(label)); found = 1; } if (fd != -1) close(fd); - kfree(dev_info_arg); - dev_info_arg = NULL; } out: + free(dev_info_arg); endmntent(f); return !found; } -static int dev_to_fsid(char *dev, __u8 *fsid) -{ - struct btrfs_super_block *disk_super; - char buf[BTRFS_SUPER_INFO_SIZE]; - int ret; - int fd; - - fd = open(dev, O_RDONLY); - if (fd < 0) { - ret = -errno; - return ret; - } - - disk_super = (struct btrfs_super_block *)buf; - ret = btrfs_read_dev_super(fd, disk_super, - BTRFS_SUPER_INFO_OFFSET, 0); - if (ret) - goto out; - - memcpy(fsid, disk_super->fsid, BTRFS_FSID_SIZE); - ret = 0; - -out: - close(fd); - return ret; -} - static void free_fs_devices(struct btrfs_fs_devices *fs_devices) { struct btrfs_fs_devices *cur_seed, *next_seed; @@ -671,7 +569,7 @@ static int search_umounted_fs_uuids(struct list_head *all_uuids, } /* skip all fs already shown as mounted fs */ - if (is_seen_fsid(cur_fs->fsid)) + if (is_seen_fsid(cur_fs->fsid, seen_fsid_hash)) continue; fs_copy = calloc(1, sizeof(*fs_copy)); @@ -718,7 +616,7 @@ static int map_seed_devices(struct list_head *all_uuids) /* * open_ctree_* detects seed/sprout mapping */ - fs_info = open_ctree_fs_info(device->name, 0, 0, + fs_info = open_ctree_fs_info(device->name, 0, 0, 0, OPEN_CTREE_PARTIAL); if (!fs_info) continue; @@ -778,7 +676,7 @@ static int cmd_filesystem_show(int argc, char **argv) int type = 0; char mp[PATH_MAX]; char path[PATH_MAX]; - __u8 fsid[BTRFS_FSID_SIZE]; + u8 fsid[BTRFS_FSID_SIZE]; char uuid_buf[BTRFS_UUID_UNPARSED_SIZE]; unsigned unit_mode; int found = 0; @@ -867,10 +765,10 @@ static int cmd_filesystem_show(int argc, char **argv) goto out; devs_only: - ret = btrfs_scan_lblkid(); + ret = btrfs_scan_devices(); if (ret) { - error("blkid device scan returned %d\n", ret); + error("blkid device scan returned %d", ret); return 1; } @@ -893,16 +791,17 @@ devs_only: list_for_each_entry(fs_devices, &all_uuids, list) print_one_uuid(fs_devices, unit_mode); - if (search && !found) + if (search && !found) { + error("not a valid btrfs filesystem: %s", search); ret = 1; - + } while (!list_empty(&all_uuids)) { fs_devices = list_entry(all_uuids.next, struct btrfs_fs_devices, list); free_fs_devices(fs_devices); } out: - free_seen_fsid(); + free_seen_fsid(seen_fsid_hash); return ret; } @@ -914,25 +813,25 @@ static const char * const cmd_filesystem_sync_usage[] = { static int cmd_filesystem_sync(int argc, char **argv) { - int fd, res, e; + int fd, res; char *path; DIR *dirstream = NULL; - if (check_argc_exact(argc, 2)) + clean_args_no_options(argc, argv, cmd_filesystem_sync_usage); + + if (check_argc_exact(argc - optind, 1)) usage(cmd_filesystem_sync_usage); - path = argv[1]; + path = argv[optind]; fd = btrfs_open_dir(path, &dirstream, 1); if (fd < 0) return 1; - printf("FSSync '%s'\n", path); res = ioctl(fd, BTRFS_IOC_SYNC); - e = errno; close_file_or_dir(fd, dirstream); if( res < 0 ){ - error("sync ioctl failed on '%s': %s", path, strerror(e)); + error("sync ioctl failed on '%s': %m", path); return 1; } @@ -945,6 +844,8 @@ static int parse_compress_type(char *s) return BTRFS_COMPRESS_ZLIB; else if (strcmp(optarg, "lzo") == 0) return BTRFS_COMPRESS_LZO; + else if (strcmp(optarg, "zstd") == 0) + return BTRFS_COMPRESS_ZSTD; else { error("unknown compression type %s", s); exit(1); @@ -955,30 +856,21 @@ static const char * const cmd_filesystem_defrag_usage[] = { "btrfs filesystem defragment [options] | [|...]", "Defragment a file or a directory", "", - "-v be verbose", - "-r defragment files recursively", - "-c[zlib,lzo] compress the file while defragmenting", - "-f flush data to disk immediately after defragmenting", - "-s start defragment only from byte onward", - "-l len defragment only up to len bytes", - "-t size target extent size hint", + "-v be verbose", + "-r defragment files recursively", + "-c[zlib,lzo,zstd] compress the file while defragmenting", + "-f flush data to disk immediately after defragmenting", + "-s start defragment only from byte onward", + "-l len defragment only up to len bytes", + "-t size target extent size hint (default: 32M)", + "", + "Warning: most Linux kernels will break up the ref-links of COW data", + "(e.g., files copied with 'cp --reflink', snapshots) which may cause", + "considerable increase of space usage. See btrfs-filesystem(8) for", + "more information.", NULL }; -static int do_defrag(int fd, int fancy_ioctl, - struct btrfs_ioctl_defrag_range_args *range) -{ - int ret; - - if (!fancy_ioctl) - ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL); - else - ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, range); - - return ret; -} - -static int defrag_global_fancy_ioctl; static struct btrfs_ioctl_defrag_range_args defrag_global_range; static int defrag_global_verbose; static int defrag_global_errors; @@ -986,32 +878,31 @@ static int defrag_callback(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf) { int ret = 0; - int e = 0; int fd = 0; if ((typeflag == FTW_F) && S_ISREG(sb->st_mode)) { if (defrag_global_verbose) printf("%s\n", fpath); fd = open(fpath, O_RDWR); - if (fd < 0) + if (fd < 0) { goto error; - ret = do_defrag(fd, defrag_global_fancy_ioctl, &defrag_global_range); - e = errno; + } + ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &defrag_global_range); close(fd); - if (ret && e == ENOTTY && defrag_global_fancy_ioctl) { - error("defrag range ioctl not " - "supported in this kernel, please try " - "without any options."); + if (ret && errno == ENOTTY) { + error( +"defrag range ioctl not supported in this kernel version, 2.6.33 and newer is required"); defrag_global_errors++; return ENOTTY; } - if (ret) + if (ret) { goto error; + } } return 0; error: - error("defrag failed on %s: %s", fpath, strerror(e)); + error("defrag failed on %s: %m", fpath); defrag_global_errors++; return 0; } @@ -1022,19 +913,24 @@ static int cmd_filesystem_defrag(int argc, char **argv) int flush = 0; u64 start = 0; u64 len = (u64)-1; - u64 thresh = 0; + u64 thresh; int i; int recursive = 0; int ret = 0; - int e = 0; int compress_type = BTRFS_COMPRESS_NONE; DIR *dirstream; + /* + * Kernel has a different default (256K) that is supposed to be safe, + * but it does not defragment very well. The 32M will likely lead to + * better results and is independent of the kernel default. We have to + * use the v2 defrag ioctl. + */ + thresh = SZ_32M; + defrag_global_errors = 0; defrag_global_verbose = 0; defrag_global_errors = 0; - defrag_global_fancy_ioctl = 0; - optind = 1; while(1) { int c = getopt(argc, argv, "vrc::fs:l:t:"); if (c < 0) @@ -1045,22 +941,18 @@ static int cmd_filesystem_defrag(int argc, char **argv) compress_type = BTRFS_COMPRESS_ZLIB; if (optarg) compress_type = parse_compress_type(optarg); - defrag_global_fancy_ioctl = 1; break; case 'f': flush = 1; - defrag_global_fancy_ioctl = 1; break; case 'v': defrag_global_verbose = 1; break; case 's': start = parse_size(optarg); - defrag_global_fancy_ioctl = 1; break; case 'l': len = parse_size(optarg); - defrag_global_fancy_ioctl = 1; break; case 't': thresh = parse_size(optarg); @@ -1070,7 +962,6 @@ static int cmd_filesystem_defrag(int argc, char **argv) thresh, (u32)-1); thresh = (u32)-1; } - defrag_global_fancy_ioctl = 1; break; case 'r': recursive = 1; @@ -1094,67 +985,91 @@ static int cmd_filesystem_defrag(int argc, char **argv) if (flush) defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_START_IO; + /* + * Look for directory arguments and warn if the recursive mode is not + * requested, as this is not implemented as recursive defragmentation + * in kernel. The stat errors are silent here as we check them below. + */ + if (!recursive) { + int found = 0; + + for (i = optind; i < argc; i++) { + struct stat st; + + if (stat(argv[i], &st)) + continue; + + if (S_ISDIR(st.st_mode)) { + warning( + "directory specified but recursive mode not requested: %s", + argv[i]); + found = 1; + } + } + if (found) { + warning( +"a directory passed to the defrag ioctl will not process the files\n" +"recursively but will defragment the subvolume tree and the extent tree.\n" +"If this is not intended, please use option -r ."); + } + } + for (i = optind; i < argc; i++) { struct stat st; + int defrag_err = 0; dirstream = NULL; fd = open_file_or_dir(argv[i], &dirstream); if (fd < 0) { - error("cannot open %s: %s\n", argv[i], - strerror(errno)); - defrag_global_errors++; - close_file_or_dir(fd, dirstream); - continue; + error("cannot open %s: %m", argv[i]); + ret = -errno; + goto next; } - if (fstat(fd, &st)) { - error("failed to stat %s: %s", - argv[i], strerror(errno)); - defrag_global_errors++; - close_file_or_dir(fd, dirstream); - continue; + + ret = fstat(fd, &st); + if (ret) { + error("failed to stat %s: %m", argv[i]); + ret = -errno; + goto next; } if (!(S_ISDIR(st.st_mode) || S_ISREG(st.st_mode))) { - error("%s is not a directory or a regular file\n", + error("%s is not a directory or a regular file", argv[i]); - defrag_global_errors++; - close_file_or_dir(fd, dirstream); - continue; + ret = -EINVAL; + goto next; } - if (recursive) { - if (S_ISDIR(st.st_mode)) { - ret = nftw(argv[i], defrag_callback, 10, + if (recursive && S_ISDIR(st.st_mode)) { + ret = nftw(argv[i], defrag_callback, 10, FTW_MOUNT | FTW_PHYS); - if (ret == ENOTTY) - exit(1); - /* errors are handled in the callback */ - ret = 0; - } else { - if (defrag_global_verbose) - printf("%s\n", argv[i]); - ret = do_defrag(fd, defrag_global_fancy_ioctl, - &defrag_global_range); - e = errno; - } + if (ret == ENOTTY) + exit(1); + /* errors are handled in the callback */ + ret = 0; } else { if (defrag_global_verbose) printf("%s\n", argv[i]); - ret = do_defrag(fd, defrag_global_fancy_ioctl, + ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &defrag_global_range); - e = errno; - } - close_file_or_dir(fd, dirstream); - if (ret && e == ENOTTY && defrag_global_fancy_ioctl) { - error("defrag range ioctl not " - "supported in this kernel, please try " - "without any options."); - defrag_global_errors++; - break; + defrag_err = errno; + if (ret && defrag_err == ENOTTY) { + error( +"defrag range ioctl not supported in this kernel version, 2.6.33 and newer is required"); + defrag_global_errors++; + close_file_or_dir(fd, dirstream); + break; + } + if (ret) { + error("defrag failed on %s: %s", argv[i], + strerror(defrag_err)); + goto next; + } } - if (ret) { - error("defrag failed on %s: %s", argv[i], strerror(e)); +next: + if (ret) defrag_global_errors++; - } + close_file_or_dir(fd, dirstream); } + if (defrag_global_errors) fprintf(stderr, "total %d failures\n", defrag_global_errors); @@ -1178,11 +1093,13 @@ static int cmd_filesystem_resize(int argc, char **argv) DIR *dirstream = NULL; struct stat st; - if (check_argc_exact(argc, 3)) + clean_args_no_options_relaxed(argc, argv, cmd_filesystem_resize_usage); + + if (check_argc_exact(argc - optind, 2)) usage(cmd_filesystem_resize_usage); - amount = argv[1]; - path = argv[2]; + amount = argv[optind]; + path = argv[optind + 1]; len = strlen(amount); if (len == 0 || len >= BTRFS_VOL_NAME_MAX) { @@ -1192,7 +1109,7 @@ static int cmd_filesystem_resize(int argc, char **argv) res = stat(path, &st); if (res < 0) { - error("resize: cannot stat %s: %s", path, strerror(errno)); + error("resize: cannot stat %s: %m", path); return 1; } if (!S_ISDIR(st.st_mode)) { @@ -1219,7 +1136,7 @@ static int cmd_filesystem_resize(int argc, char **argv) path); break; default: - error("unable to resize '%s': %s", path, strerror(e)); + error("unable to resize '%s': %m", path); break; } return 1; @@ -1247,16 +1164,19 @@ static const char * const cmd_filesystem_label_usage[] = { static int cmd_filesystem_label(int argc, char **argv) { - if (check_argc_min(argc, 2) || check_argc_max(argc, 3)) + clean_args_no_options(argc, argv, cmd_filesystem_label_usage); + + if (check_argc_min(argc - optind, 1) || + check_argc_max(argc - optind, 2)) usage(cmd_filesystem_label_usage); - if (argc > 2) { - return set_label(argv[1], argv[2]); + if (argc - optind > 1) { + return set_label(argv[optind], argv[optind + 1]); } else { char label[BTRFS_LABEL_SIZE]; int ret; - ret = get_label(argv[1], label); + ret = get_label(argv[optind], label); if (!ret) fprintf(stdout, "%s\n", label); @@ -1270,6 +1190,7 @@ static const char filesystem_cmd_group_info[] = const struct cmd_group filesystem_cmd_group = { filesystem_cmd_group_usage, filesystem_cmd_group_info, { { "df", cmd_filesystem_df, cmd_filesystem_df_usage, NULL, 0 }, + { "du", cmd_filesystem_du, cmd_filesystem_du_usage, NULL, 0 }, { "show", cmd_filesystem_show, cmd_filesystem_show_usage, NULL, 0 }, { "sync", cmd_filesystem_sync, cmd_filesystem_sync_usage, NULL,