btrfs-progs: convert: Add support to rollback new convert image
[platform/upstream/btrfs-progs.git] / mkfs.c
diff --git a/mkfs.c b/mkfs.c
index 70883d3..a3a3c14 100644 (file)
--- a/mkfs.c
+++ b/mkfs.c
@@ -88,7 +88,7 @@ static int create_metadata_block_groups(struct btrfs_root *root, int mixed,
                                        BTRFS_BLOCK_GROUP_DATA);
                if (ret == -ENOSPC) {
                        fprintf(stderr,
-                               "no space to alloc data/metadata chunk\n");
+                               "no space to allocate data/metadata chunk\n");
                        goto err;
                }
                BUG_ON(ret);
@@ -104,7 +104,7 @@ static int create_metadata_block_groups(struct btrfs_root *root, int mixed,
                                        &chunk_start, &chunk_size,
                                        BTRFS_BLOCK_GROUP_METADATA);
                if (ret == -ENOSPC) {
-                       fprintf(stderr, "no space to alloc metadata chunk\n");
+                       fprintf(stderr, "no space to allocate metadata chunk\n");
                        goto err;
                }
                BUG_ON(ret);
@@ -136,7 +136,7 @@ static int create_data_block_groups(struct btrfs_trans_handle *trans,
                                        &chunk_start, &chunk_size,
                                        BTRFS_BLOCK_GROUP_DATA);
                if (ret == -ENOSPC) {
-                       fprintf(stderr, "no space to alloc data chunk\n");
+                       fprintf(stderr, "no space to allocate data chunk\n");
                        goto err;
                }
                BUG_ON(ret);
@@ -252,7 +252,6 @@ static int create_raid_groups(struct btrfs_trans_handle *trans,
                              u64 metadata_profile, int mixed,
                              struct mkfs_allocation *allocation)
 {
-       u64 num_devices = btrfs_super_num_devices(root->fs_info->super_copy);
        int ret;
 
        if (metadata_profile) {
@@ -271,7 +270,7 @@ static int create_raid_groups(struct btrfs_trans_handle *trans,
                BUG_ON(ret);
 
        }
-       if (!mixed && num_devices > 1 && data_profile) {
+       if (!mixed && data_profile) {
                ret = create_one_raid_group(trans, root,
                                            BTRFS_BLOCK_GROUP_DATA |
                                            data_profile, allocation);
@@ -341,7 +340,7 @@ static void print_version(void)
 
 static u64 parse_profile(char *s)
 {
-       if (strcmp(s, "raid0") == 0) {
+       if (strcasecmp(s, "raid0") == 0) {
                return BTRFS_BLOCK_GROUP_RAID0;
        } else if (strcasecmp(s, "raid1") == 0) {
                return BTRFS_BLOCK_GROUP_RAID1;
@@ -592,15 +591,14 @@ static int add_symbolic_link(struct btrfs_trans_handle *trans,
                             u64 objectid, const char *path_name)
 {
        int ret;
-       u64 sectorsize = root->sectorsize;
-       char *buf = malloc(sectorsize);
+       char buf[PATH_MAX];
 
-       ret = readlink(path_name, buf, sectorsize);
+       ret = readlink(path_name, buf, sizeof(buf));
        if (ret <= 0) {
                fprintf(stderr, "readlink failed for %s\n", path_name);
                goto fail;
        }
-       if (ret >= sectorsize) {
+       if (ret >= sizeof(buf)) {
                fprintf(stderr, "symlink too long for %s\n", path_name);
                ret = -1;
                goto fail;
@@ -610,7 +608,6 @@ static int add_symbolic_link(struct btrfs_trans_handle *trans,
        ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
                                         buf, ret + 1);
 fail:
-       free(buf);
        return ret;
 }
 
@@ -648,6 +645,12 @@ static int add_file_items(struct btrfs_trans_handle *trans,
 
        if (st->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
                char *buffer = malloc(st->st_size);
+
+               if (!buffer) {
+                       ret = -ENOMEM;
+                       goto end;
+               }
+
                ret_read = pread64(fd, buffer, st->st_size, bytes_read);
                if (ret_read == -1) {
                        fprintf(stderr, "%s read failed\n", path_name);
@@ -780,6 +783,8 @@ static int traverse_directory(struct btrfs_trans_handle *trans,
 
        /* Add list for source directory */
        dir_entry = malloc(sizeof(struct directory_name_entry));
+       if (!dir_entry)
+               return -ENOMEM;
        dir_entry->dir_name = dir_name;
        dir_entry->path = realpath(dir_name, real_path);
        if (!dir_entry->path) {
@@ -881,6 +886,10 @@ static int traverse_directory(struct btrfs_trans_handle *trans,
 
                        if (S_ISDIR(st.st_mode)) {
                                dir_entry = malloc(sizeof(struct directory_name_entry));
+                               if (!dir_entry) {
+                                       ret = -ENOMEM;
+                                       goto fail;
+                               }
                                dir_entry->dir_name = cur_file->d_name;
                                dir_entry->path = make_path(parent_dir_entry->path,
                                                            cur_file->d_name);
@@ -926,7 +935,7 @@ fail_no_dir:
 static int open_target(char *output_name)
 {
        int output_fd;
-       output_fd = open(output_name, O_CREAT | O_RDWR | O_TRUNC,
+       output_fd = open(output_name, O_CREAT | O_RDWR,
                         S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
 
        return output_fd;
@@ -962,7 +971,7 @@ static int create_chunks(struct btrfs_trans_handle *trans,
                size_of_data = minimum_data_chunk_size;
 
        ret = btrfs_alloc_data_chunk(trans, root->fs_info->extent_root,
-                                    &chunk_start, size_of_data, data_type);
+                                    &chunk_start, size_of_data, data_type, 0);
        BUG_ON(ret);
        ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
                                     data_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
@@ -1020,16 +1029,15 @@ out:
  * This ignores symlinks with unreadable targets and subdirs that can't
  * be read.  It's a best-effort to give a rough estimate of the size of
  * a subdir.  It doesn't guarantee that prepopulating btrfs from this
- * tree won't still run out of space. 
- *
- * The rounding up to 4096 is questionable.  Previous code used du -B 4096.
+ * tree won't still run out of space.
  */
 static u64 global_total_size;
+static u64 fs_block_size;
 static int ftw_add_entry_size(const char *fpath, const struct stat *st,
                              int type)
 {
        if (type == FTW_F || type == FTW_D)
-               global_total_size += round_up(st->st_size, 4096);
+               global_total_size += round_up(st->st_size, fs_block_size);
 
        return 0;
 }
@@ -1049,6 +1057,7 @@ static u64 size_sourcedir(char *dir_name, u64 sectorsize,
                        allocated_meta_size / default_chunk_size;
 
        global_total_size = 0;
+       fs_block_size = sectorsize;
        ret = ftw(dir_name, ftw_add_entry_size, 10);
        dir_size = global_total_size;
        if (ret < 0) {
@@ -1077,32 +1086,29 @@ static u64 size_sourcedir(char *dir_name, u64 sectorsize,
        return total_size;
 }
 
-static int zero_output_file(int out_fd, u64 size, u32 sectorsize)
+static int zero_output_file(int out_fd, u64 size)
 {
-       int len = sectorsize;
-       int loop_num = size / sectorsize;
+       int loop_num;
        u64 location = 0;
-       char *buf = malloc(len);
+       char buf[4096];
        int ret = 0, i;
        ssize_t written;
 
-       if (!buf)
-               return -ENOMEM;
-       memset(buf, 0, len);
+       memset(buf, 0, 4096);
+       loop_num = size / 4096;
        for (i = 0; i < loop_num; i++) {
-               written = pwrite64(out_fd, buf, len, location);
-               if (written != len)
+               written = pwrite64(out_fd, buf, 4096, location);
+               if (written != 4096)
                        ret = -EIO;
-               location += sectorsize;
+               location += 4096;
        }
-       free(buf);
        return ret;
 }
 
 static int is_ssd(const char *file)
 {
        blkid_probe probe;
-       char wholedisk[32];
+       char wholedisk[PATH_MAX];
        char sysfs_path[PATH_MAX];
        dev_t devno;
        int fd;
@@ -1174,9 +1180,6 @@ static void list_all_devices(struct btrfs_root *root)
        printf("Devices:\n");
        printf("   ID        SIZE  PATH\n");
        list_for_each_entry(device, &fs_devices->devices, dev_list) {
-               char dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
-
-               uuid_unparse(device->uuid, dev_uuid);
                printf("  %3llu  %10s  %s\n",
                        device->devid,
                        pretty_size(device->total_bytes),
@@ -1202,7 +1205,7 @@ static int is_temp_block_group(struct extent_buffer *node,
         * 1) Empty chunk
         * Temp chunk is always empty.
         *
-        * 2) profile dismatch with mkfs profile.
+        * 2) profile mismatch with mkfs profile.
         * Temp chunk is always in SINGLE
         *
         * 3) Size differs with mkfs_alloc
@@ -1330,7 +1333,7 @@ out:
        return ret;
 }
 
-int main(int ac, char **av)
+int main(int argc, char **argv)
 {
        char *file;
        struct btrfs_root *root;
@@ -1392,7 +1395,7 @@ int main(int ac, char **av)
                        { NULL, 0, NULL, 0}
                };
 
-               c = getopt_long(ac, av, "A:b:fl:n:s:m:d:L:O:r:U:VMKq",
+               c = getopt_long(argc, argv, "A:b:fl:n:s:m:d:L:O:r:U:VMKq",
                                long_options, NULL);
                if (c < 0)
                        break;
@@ -1480,7 +1483,7 @@ int main(int ac, char **av)
 
        sectorsize = max(sectorsize, (u32)sysconf(_SC_PAGESIZE));
        saved_optind = optind;
-       dev_cnt = ac - optind;
+       dev_cnt = argc - optind;
        if (dev_cnt == 0)
                print_usage(1);
 
@@ -1504,16 +1507,16 @@ int main(int ac, char **av)
        }
 
        while (dev_cnt-- > 0) {
-               file = av[optind++];
+               file = argv[optind++];
                if (is_block_device(file) == 1)
                        if (test_dev_for_mkfs(file, force_overwrite))
                                exit(1);
        }
 
        optind = saved_optind;
-       dev_cnt = ac - optind;
+       dev_cnt = argc - optind;
 
-       file = av[optind++];
+       file = argv[optind++];
        ssd = is_ssd(file);
 
        /*
@@ -1579,7 +1582,7 @@ int main(int ac, char **av)
        for (i = saved_optind; i < saved_optind + dev_cnt; i++) {
                char *path;
 
-               path = av[i];
+               path = argv[i];
                ret = test_minimum_size(path, nodesize);
                if (ret < 0) {
                        fprintf(stderr, "Failed to check size for '%s': %s\n",
@@ -1597,7 +1600,7 @@ int main(int ac, char **av)
                }
        }
        ret = test_num_disk_vs_raid(metadata_profile, data_profile,
-                       dev_cnt, mixed);
+                       dev_cnt, mixed, ssd);
        if (ret)
                exit(1);
 
@@ -1636,7 +1639,7 @@ int main(int ac, char **av)
                                             &num_of_meta_chunks, &size_of_data);
                if(block_count < source_dir_size)
                        block_count = source_dir_size;
-               ret = zero_output_file(fd, block_count, sectorsize);
+               ret = zero_output_file(fd, block_count);
                if (ret) {
                        fprintf(stderr, "unable to zero the output file\n");
                        exit(1);
@@ -1660,7 +1663,7 @@ int main(int ac, char **av)
        if (group_profile_max_safe_loss(metadata_profile) <
                group_profile_max_safe_loss(data_profile)){
                fprintf(stderr,
-                       "WARNING: metatdata has lower redundancy than data!\n\n");
+                       "WARNING: metadata has lower redundancy than data!\n\n");
        }
 
        mkfs_cfg.label = label;
@@ -1672,7 +1675,7 @@ int main(int ac, char **av)
        mkfs_cfg.stripesize = stripesize;
        mkfs_cfg.features = features;
 
-       ret = make_btrfs(fd, &mkfs_cfg);
+       ret = make_btrfs(fd, &mkfs_cfg, NULL);
        if (ret) {
                fprintf(stderr, "error during mkfs: %s\n", strerror(-ret));
                exit(1);
@@ -1725,7 +1728,7 @@ int main(int ac, char **av)
                goto raid_groups;
 
        while (dev_cnt-- > 0) {
-               file = av[optind++];
+               file = argv[optind++];
 
                /*
                 * open without O_EXCL so that the problem should not