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-rw-r--r--meta/recipes-devtools/btrfs-tools/btrfs-tools/upstream-tmp/0013-btrfs-progs-Add-new-feature-to-mkfs.btrfs-to-make-fi.patch1108
1 files changed, 1108 insertions, 0 deletions
diff --git a/meta/recipes-devtools/btrfs-tools/btrfs-tools/upstream-tmp/0013-btrfs-progs-Add-new-feature-to-mkfs.btrfs-to-make-fi.patch b/meta/recipes-devtools/btrfs-tools/btrfs-tools/upstream-tmp/0013-btrfs-progs-Add-new-feature-to-mkfs.btrfs-to-make-fi.patch
new file mode 100644
index 0000000000..215106edb8
--- /dev/null
+++ b/meta/recipes-devtools/btrfs-tools/btrfs-tools/upstream-tmp/0013-btrfs-progs-Add-new-feature-to-mkfs.btrfs-to-make-fi.patch
@@ -0,0 +1,1108 @@
1Upstream-Status: Inappropriate [Backport]
2From e3736c698e8b490bea1375576b718a2de6e89603 Mon Sep 17 00:00:00 2001
3From: Donggeun Kim <dg77.kim@samsung.com>
4Date: Thu, 8 Jul 2010 09:17:59 +0000
5Subject: [PATCH 13/15] btrfs-progs: Add new feature to mkfs.btrfs to make file system image file from source directory
6
7Changes from V1 to V2:
8- support extended attributes
9- move btrfs_alloc_data_chunk function to volumes.c
10- fix an execution error when additional useless parameters are specified
11- fix traverse_directory function so that the insertion functions for the common items are invoked in a single point
12
13The extended attributes is implemented through llistxattr and getxattr function calls.
14
15Thanks
16
17Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
18Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
19Signed-off-by: Chris Mason <chris.mason@oracle.com>
20---
21 mkfs.c | 864 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
22 volumes.c | 104 ++++++++
23 volumes.h | 3 +
24 3 files changed, 947 insertions(+), 24 deletions(-)
25
26diff --git a/mkfs.c b/mkfs.c
27index 04de93a..57c88f9 100644
28--- a/mkfs.c
29+++ b/mkfs.c
30@@ -29,12 +29,14 @@
31 #include <stdlib.h>
32 #include <sys/types.h>
33 #include <sys/stat.h>
34+#include <sys/dir.h>
35 #include <fcntl.h>
36 #include <unistd.h>
37 #include <getopt.h>
38 #include <uuid/uuid.h>
39 #include <linux/fs.h>
40 #include <ctype.h>
41+#include <attr/xattr.h>
42 #include "kerncompat.h"
43 #include "ctree.h"
44 #include "disk-io.h"
45@@ -43,6 +45,15 @@
46 #include "utils.h"
47 #include "version.h"
48
49+static u64 index_cnt = 2;
50+
51+struct directory_name_entry {
52+ char *dir_name;
53+ char *path;
54+ ino_t inum;
55+ struct list_head list;
56+};
57+
58 static u64 parse_size(char *s)
59 {
60 int len = strlen(s);
61@@ -298,6 +309,7 @@ static void print_usage(void)
62 fprintf(stderr, "\t -M --mixed mix metadata and data together\n");
63 fprintf(stderr, "\t -n --nodesize size of btree nodes\n");
64 fprintf(stderr, "\t -s --sectorsize min block allocation\n");
65+ fprintf(stderr, "\t -r --rootdir the source directory\n");
66 fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
67 exit(1);
68 }
69@@ -355,9 +367,768 @@ static struct option long_options[] = {
70 { "sectorsize", 1, NULL, 's' },
71 { "data", 1, NULL, 'd' },
72 { "version", 0, NULL, 'V' },
73+ { "rootdir", 1, NULL, 'r' },
74 { 0, 0, 0, 0}
75 };
76
77+static int add_directory_items(struct btrfs_trans_handle *trans,
78+ struct btrfs_root *root, u64 objectid,
79+ ino_t parent_inum, const char *name,
80+ struct stat *st, int *dir_index_cnt)
81+{
82+ int ret;
83+ int name_len;
84+ struct btrfs_key location;
85+ u8 filetype = 0;
86+
87+ name_len = strlen(name);
88+
89+ location.objectid = objectid;
90+ location.offset = 0;
91+ btrfs_set_key_type(&location, BTRFS_INODE_ITEM_KEY);
92+
93+ if (S_ISDIR(st->st_mode))
94+ filetype = BTRFS_FT_DIR;
95+ if (S_ISREG(st->st_mode))
96+ filetype = BTRFS_FT_REG_FILE;
97+ if (S_ISLNK(st->st_mode))
98+ filetype = BTRFS_FT_SYMLINK;
99+
100+ ret = btrfs_insert_dir_item(trans, root, name, name_len,
101+ parent_inum, &location,
102+ filetype, index_cnt);
103+
104+ *dir_index_cnt = index_cnt;
105+ index_cnt++;
106+
107+ return ret;
108+}
109+
110+static int fill_inode_item(struct btrfs_trans_handle *trans,
111+ struct btrfs_root *root,
112+ struct btrfs_inode_item *dst, struct stat *src)
113+{
114+ u64 blocks = 0;
115+ u64 sectorsize = root->sectorsize;
116+
117+ btrfs_set_stack_inode_generation(dst, trans->transid);
118+ btrfs_set_stack_inode_size(dst, src->st_size);
119+ btrfs_set_stack_inode_nbytes(dst, 0);
120+ btrfs_set_stack_inode_block_group(dst, 0);
121+ btrfs_set_stack_inode_nlink(dst, src->st_nlink);
122+ btrfs_set_stack_inode_uid(dst, src->st_uid);
123+ btrfs_set_stack_inode_gid(dst, src->st_gid);
124+ btrfs_set_stack_inode_mode(dst, src->st_mode);
125+ btrfs_set_stack_inode_rdev(dst, 0);
126+ btrfs_set_stack_inode_flags(dst, 0);
127+ btrfs_set_stack_timespec_sec(&dst->atime, src->st_atime);
128+ btrfs_set_stack_timespec_nsec(&dst->atime, 0);
129+ btrfs_set_stack_timespec_sec(&dst->ctime, src->st_ctime);
130+ btrfs_set_stack_timespec_nsec(&dst->ctime, 0);
131+ btrfs_set_stack_timespec_sec(&dst->mtime, src->st_mtime);
132+ btrfs_set_stack_timespec_nsec(&dst->mtime, 0);
133+ btrfs_set_stack_timespec_sec(&dst->otime, 0);
134+ btrfs_set_stack_timespec_nsec(&dst->otime, 0);
135+
136+ if (S_ISDIR(src->st_mode)) {
137+ btrfs_set_stack_inode_size(dst, 0);
138+ btrfs_set_stack_inode_nlink(dst, 1);
139+ }
140+ if (S_ISREG(src->st_mode)) {
141+ btrfs_set_stack_inode_size(dst, (u64)src->st_size);
142+ if (src->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root))
143+ btrfs_set_stack_inode_nbytes(dst, src->st_size);
144+ else {
145+ blocks = src->st_size / sectorsize;
146+ if (src->st_size % sectorsize)
147+ blocks += 1;
148+ blocks *= sectorsize;
149+ btrfs_set_stack_inode_nbytes(dst, blocks);
150+ }
151+ }
152+ if (S_ISLNK(src->st_mode))
153+ btrfs_set_stack_inode_nbytes(dst, src->st_size + 1);
154+
155+ return 0;
156+}
157+
158+static int directory_select(const struct direct *entry)
159+{
160+ if ((strncmp(entry->d_name, ".", entry->d_reclen) == 0) ||
161+ (strncmp(entry->d_name, "..", entry->d_reclen) == 0))
162+ return 0;
163+ else
164+ return 1;
165+}
166+
167+static u64 calculate_dir_inode_size(char *dirname)
168+{
169+ int count, i;
170+ struct direct **files, *cur_file;
171+ u64 dir_inode_size = 0;
172+
173+ count = scandir(dirname, &files, directory_select, NULL);
174+
175+ for (i = 0; i < count; i++) {
176+ cur_file = files[i];
177+ dir_inode_size += strlen(cur_file->d_name);
178+ }
179+
180+ dir_inode_size *= 2;
181+ return dir_inode_size;
182+}
183+
184+static int add_inode_items(struct btrfs_trans_handle *trans,
185+ struct btrfs_root *root,
186+ struct stat *st, char *name,
187+ u64 self_objectid, ino_t parent_inum,
188+ int dir_index_cnt, struct btrfs_inode_item *inode_ret)
189+{
190+ int ret;
191+ struct btrfs_key inode_key;
192+ struct btrfs_inode_item btrfs_inode;
193+ u64 objectid;
194+ u64 inode_size = 0;
195+ int name_len;
196+
197+ name_len = strlen(name);
198+ fill_inode_item(trans, root, &btrfs_inode, st);
199+ objectid = self_objectid;
200+
201+ if (S_ISDIR(st->st_mode)) {
202+ inode_size = calculate_dir_inode_size(name);
203+ btrfs_set_stack_inode_size(&btrfs_inode, inode_size);
204+ }
205+
206+ inode_key.objectid = objectid;
207+ inode_key.offset = 0;
208+ btrfs_set_key_type(&inode_key, BTRFS_INODE_ITEM_KEY);
209+
210+ ret = btrfs_insert_inode(trans, root, objectid, &btrfs_inode);
211+ if (ret)
212+ goto fail;
213+
214+ ret = btrfs_insert_inode_ref(trans, root, name, name_len,
215+ objectid, parent_inum, dir_index_cnt);
216+ if (ret)
217+ goto fail;
218+
219+ *inode_ret = btrfs_inode;
220+fail:
221+ return ret;
222+}
223+
224+static int add_xattr_item(struct btrfs_trans_handle *trans,
225+ struct btrfs_root *root, u64 objectid,
226+ const char *file_name)
227+{
228+ int ret;
229+ int cur_name_len;
230+ char xattr_list[XATTR_LIST_MAX];
231+ char *cur_name;
232+ char cur_value[XATTR_SIZE_MAX];
233+ char delimiter = '\0';
234+ char *next_location = xattr_list;
235+
236+ ret = llistxattr(file_name, xattr_list, XATTR_LIST_MAX);
237+ if (ret < 0) {
238+ fprintf(stderr, "get a list of xattr failed for %s\n",
239+ file_name);
240+ return ret;
241+ }
242+ if (ret == 0)
243+ return ret;
244+
245+ cur_name = strtok(xattr_list, &delimiter);
246+ while (cur_name != NULL) {
247+ cur_name_len = strlen(cur_name);
248+ next_location += cur_name_len + 1;
249+
250+ ret = getxattr(file_name, cur_name, cur_value, XATTR_SIZE_MAX);
251+ if (ret < 0) {
252+ fprintf(stderr, "get a xattr value failed for %s\n",
253+ cur_name);
254+ }
255+
256+ ret = btrfs_insert_xattr_item(trans, root, cur_name,
257+ cur_name_len, cur_value,
258+ ret, objectid);
259+ if (ret) {
260+ fprintf(stderr, "insert a xattr item failed for %s\n",
261+ file_name);
262+ }
263+
264+ cur_name = strtok(next_location, &delimiter);
265+ }
266+
267+ return ret;
268+}
269+
270+static int custom_alloc_extent(struct btrfs_root *root, u64 num_bytes,
271+ u64 hint_byte, struct btrfs_key *ins)
272+{
273+ u64 start;
274+ u64 end;
275+ u64 last = hint_byte;
276+ int ret;
277+ int wrapped = 0;
278+ struct btrfs_block_group_cache *cache;
279+
280+ while (1) {
281+ ret = find_first_extent_bit(&root->fs_info->free_space_cache,
282+ last, &start, &end, EXTENT_DIRTY);
283+ if (ret) {
284+ if (wrapped++ == 0) {
285+ last = 0;
286+ continue;
287+ } else {
288+ goto fail;
289+ }
290+ }
291+
292+ start = max(last, start);
293+ last = end + 1;
294+ if (last - start < num_bytes)
295+ continue;
296+
297+ last = start + num_bytes;
298+ if (test_range_bit(&root->fs_info->pinned_extents,
299+ start, last - 1, EXTENT_DIRTY, 0))
300+ continue;
301+
302+ cache = btrfs_lookup_block_group(root->fs_info, start);
303+ BUG_ON(!cache);
304+ if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM ||
305+ last > cache->key.objectid + cache->key.offset) {
306+ last = cache->key.objectid + cache->key.offset;
307+ continue;
308+ }
309+
310+ if (cache->flags & (BTRFS_BLOCK_GROUP_SYSTEM |
311+ BTRFS_BLOCK_GROUP_METADATA)) {
312+ last = cache->key.objectid + cache->key.offset;
313+ continue;
314+ }
315+
316+ clear_extent_dirty(&root->fs_info->free_space_cache,
317+ start, start + num_bytes - 1, 0);
318+
319+ ins->objectid = start;
320+ ins->offset = num_bytes;
321+ ins->type = BTRFS_EXTENT_ITEM_KEY;
322+ return 0;
323+ }
324+fail:
325+ fprintf(stderr, "not enough free space\n");
326+ return -ENOSPC;
327+}
328+
329+static int record_file_extent(struct btrfs_trans_handle *trans,
330+ struct btrfs_root *root, u64 objectid,
331+ struct btrfs_inode_item *inode,
332+ u64 file_pos, u64 disk_bytenr,
333+ u64 num_bytes)
334+{
335+ int ret;
336+ struct btrfs_fs_info *info = root->fs_info;
337+ struct btrfs_root *extent_root = info->extent_root;
338+ struct extent_buffer *leaf;
339+ struct btrfs_file_extent_item *fi;
340+ struct btrfs_key ins_key;
341+ struct btrfs_path path;
342+ struct btrfs_extent_item *ei;
343+
344+ btrfs_init_path(&path);
345+
346+ ins_key.objectid = objectid;
347+ ins_key.offset = 0;
348+ btrfs_set_key_type(&ins_key, BTRFS_EXTENT_DATA_KEY);
349+ ret = btrfs_insert_empty_item(trans, root, &path, &ins_key,
350+ sizeof(*fi));
351+ if (ret)
352+ goto fail;
353+ leaf = path.nodes[0];
354+ fi = btrfs_item_ptr(leaf, path.slots[0],
355+ struct btrfs_file_extent_item);
356+ btrfs_set_file_extent_generation(leaf, fi, trans->transid);
357+ btrfs_set_file_extent_type(leaf, fi, BTRFS_FILE_EXTENT_REG);
358+ btrfs_set_file_extent_disk_bytenr(leaf, fi, disk_bytenr);
359+ btrfs_set_file_extent_disk_num_bytes(leaf, fi, num_bytes);
360+ btrfs_set_file_extent_offset(leaf, fi, 0);
361+ btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);
362+ btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);
363+ btrfs_set_file_extent_compression(leaf, fi, 0);
364+ btrfs_set_file_extent_encryption(leaf, fi, 0);
365+ btrfs_set_file_extent_other_encoding(leaf, fi, 0);
366+ btrfs_mark_buffer_dirty(leaf);
367+
368+ btrfs_release_path(root, &path);
369+
370+ ins_key.objectid = disk_bytenr;
371+ ins_key.offset = num_bytes;
372+ ins_key.type = BTRFS_EXTENT_ITEM_KEY;
373+
374+ ret = btrfs_insert_empty_item(trans, extent_root, &path,
375+ &ins_key, sizeof(*ei));
376+ if (ret == 0) {
377+ leaf = path.nodes[0];
378+ ei = btrfs_item_ptr(leaf, path.slots[0],
379+ struct btrfs_extent_item);
380+
381+ btrfs_set_extent_refs(leaf, ei, 0);
382+ btrfs_set_extent_generation(leaf, ei, trans->transid);
383+ btrfs_set_extent_flags(leaf, ei, BTRFS_EXTENT_FLAG_DATA);
384+
385+ btrfs_mark_buffer_dirty(leaf);
386+ ret = btrfs_update_block_group(trans, root, disk_bytenr,
387+ num_bytes, 1, 0);
388+ if (ret)
389+ goto fail;
390+ } else if (ret != -EEXIST) {
391+ goto fail;
392+ }
393+
394+ ret = btrfs_inc_extent_ref(trans, root, disk_bytenr, num_bytes, 0,
395+ root->root_key.objectid,
396+ objectid, 0);
397+fail:
398+ btrfs_release_path(root, &path);
399+ return ret;
400+}
401+
402+static int add_symbolic_link(struct btrfs_trans_handle *trans,
403+ struct btrfs_root *root,
404+ u64 objectid, const char *path_name)
405+{
406+ int ret;
407+ u64 sectorsize = root->sectorsize;
408+ char *buf = malloc(sectorsize);
409+
410+ ret = readlink(path_name, buf, sectorsize);
411+ if (ret <= 0) {
412+ fprintf(stderr, "readlink failed for %s\n", path_name);
413+ goto fail;
414+ }
415+ if (ret > sectorsize) {
416+ fprintf(stderr, "symlink too long for %s", path_name);
417+ ret = -1;
418+ goto fail;
419+ }
420+ ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
421+ buf, ret + 1);
422+fail:
423+ free(buf);
424+ return ret;
425+}
426+
427+static int add_file_items(struct btrfs_trans_handle *trans,
428+ struct btrfs_root *root,
429+ struct btrfs_inode_item *btrfs_inode, u64 objectid,
430+ ino_t parent_inum, struct stat *st,
431+ const char *path_name, int out_fd)
432+{
433+ int ret;
434+ ssize_t ret_read;
435+ u64 bytes_read = 0;
436+ char *buffer = NULL;
437+ struct btrfs_key key;
438+ int blocks;
439+ u32 sectorsize = root->sectorsize;
440+ u64 first_block = 0;
441+ u64 num_blocks = 0;
442+ int fd;
443+
444+ fd = open(path_name, O_RDONLY);
445+ if (fd == -1) {
446+ fprintf(stderr, "%s open failed\n", path_name);
447+ goto end;
448+ }
449+
450+ blocks = st->st_size / sectorsize;
451+ if (st->st_size % sectorsize)
452+ blocks += 1;
453+
454+ if (st->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
455+ buffer = malloc(st->st_size);
456+ ret_read = pread64(fd, buffer, st->st_size, bytes_read);
457+ if (ret_read == -1) {
458+ fprintf(stderr, "%s read failed\n", path_name);
459+ goto end;
460+ }
461+
462+ ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
463+ buffer, st->st_size);
464+ goto end;
465+ }
466+
467+ ret = custom_alloc_extent(root, blocks * sectorsize, 0, &key);
468+ if (ret)
469+ goto end;
470+
471+ first_block = key.objectid;
472+ bytes_read = 0;
473+ buffer = malloc(sectorsize);
474+
475+ do {
476+ memset(buffer, 0, sectorsize);
477+ ret_read = pread64(fd, buffer, sectorsize, bytes_read);
478+ if (ret_read == -1) {
479+ fprintf(stderr, "%s read failed\n", path_name);
480+ goto end;
481+ }
482+
483+ ret = pwrite64(out_fd, buffer, sectorsize,
484+ first_block + bytes_read);
485+ if (ret != sectorsize) {
486+ fprintf(stderr, "output file write failed\n");
487+ goto end;
488+ }
489+
490+ /* checksum for file data */
491+ ret = btrfs_csum_file_block(trans, root->fs_info->csum_root,
492+ first_block + (blocks * sectorsize),
493+ first_block + bytes_read,
494+ buffer, sectorsize);
495+ if (ret) {
496+ fprintf(stderr, "%s checksum failed\n", path_name);
497+ goto end;
498+ }
499+
500+ bytes_read += ret_read;
501+ num_blocks++;
502+ } while (ret_read == sectorsize);
503+
504+ if (num_blocks > 0) {
505+ ret = record_file_extent(trans, root, objectid, btrfs_inode,
506+ first_block, first_block,
507+ blocks * sectorsize);
508+ if (ret)
509+ goto end;
510+ }
511+
512+end:
513+ if (buffer)
514+ free(buffer);
515+ close(fd);
516+ return ret;
517+}
518+
519+static char *make_path(char *dir, char *name)
520+{
521+ char *path;
522+
523+ path = malloc(strlen(dir) + strlen(name) + 2);
524+ if (!path)
525+ return NULL;
526+ strcpy(path, dir);
527+ if (dir[strlen(dir) - 1] != '/')
528+ strcat(path, "/");
529+ strcat(path, name);
530+ return path;
531+}
532+
533+static int traverse_directory(struct btrfs_trans_handle *trans,
534+ struct btrfs_root *root, char *dir_name,
535+ struct directory_name_entry *dir_head, int out_fd)
536+{
537+ int ret = 0;
538+
539+ struct btrfs_inode_item cur_inode;
540+ struct btrfs_inode_item *inode_item;
541+ int count, i, dir_index_cnt;
542+ struct direct **files;
543+ struct stat st;
544+ struct directory_name_entry *dir_entry, *parent_dir_entry;
545+ struct direct *cur_file;
546+ ino_t parent_inum, cur_inum;
547+ ino_t highest_inum = 0;
548+ char *parent_dir_name;
549+ struct btrfs_path path;
550+ struct extent_buffer *leaf;
551+ struct btrfs_key root_dir_key;
552+ u64 root_dir_inode_size = 0;
553+
554+ /* Add list for source directory */
555+ dir_entry = malloc(sizeof(struct directory_name_entry));
556+ dir_entry->dir_name = dir_name;
557+ dir_entry->path = malloc(strlen(dir_name) + 1);
558+ strcpy(dir_entry->path, dir_name);
559+
560+ parent_inum = highest_inum + BTRFS_FIRST_FREE_OBJECTID;
561+ dir_entry->inum = parent_inum;
562+ list_add_tail(&dir_entry->list, &dir_head->list);
563+
564+ btrfs_init_path(&path);
565+
566+ root_dir_key.objectid = btrfs_root_dirid(&root->root_item);
567+ root_dir_key.offset = 0;
568+ btrfs_set_key_type(&root_dir_key, BTRFS_INODE_ITEM_KEY);
569+ ret = btrfs_lookup_inode(trans, root, &path, &root_dir_key, 1);
570+ if (ret) {
571+ fprintf(stderr, "root dir lookup error\n");
572+ goto fail;
573+ }
574+
575+ leaf = path.nodes[0];
576+ inode_item = btrfs_item_ptr(leaf, path.slots[0],
577+ struct btrfs_inode_item);
578+
579+ root_dir_inode_size = calculate_dir_inode_size(dir_name);
580+ btrfs_set_inode_size(leaf, inode_item, root_dir_inode_size);
581+ btrfs_mark_buffer_dirty(leaf);
582+
583+ btrfs_release_path(root, &path);
584+
585+ do {
586+ parent_dir_entry = list_entry(dir_head->list.next,
587+ struct directory_name_entry,
588+ list);
589+ list_del(&parent_dir_entry->list);
590+
591+ parent_inum = parent_dir_entry->inum;
592+ parent_dir_name = parent_dir_entry->dir_name;
593+ if (chdir(parent_dir_entry->path)) {
594+ fprintf(stderr, "chdir error for %s\n",
595+ parent_dir_name);
596+ goto fail;
597+ }
598+
599+ count = scandir(parent_dir_entry->path, &files,
600+ directory_select, NULL);
601+
602+ for (i = 0; i < count; i++) {
603+ cur_file = files[i];
604+
605+ if (lstat(cur_file->d_name, &st) == -1) {
606+ fprintf(stderr, "lstat failed for file %s\n",
607+ cur_file->d_name);
608+ goto fail;
609+ }
610+
611+ cur_inum = ++highest_inum + BTRFS_FIRST_FREE_OBJECTID;
612+ ret = add_directory_items(trans, root,
613+ cur_inum, parent_inum,
614+ cur_file->d_name,
615+ &st, &dir_index_cnt);
616+ if (ret) {
617+ fprintf(stderr, "add_directory_items failed\n");
618+ goto fail;
619+ }
620+
621+ ret = add_inode_items(trans, root, &st,
622+ cur_file->d_name, cur_inum,
623+ parent_inum, dir_index_cnt,
624+ &cur_inode);
625+ if (ret) {
626+ fprintf(stderr, "add_inode_items failed\n");
627+ goto fail;
628+ }
629+
630+ ret = add_xattr_item(trans, root,
631+ cur_inum, cur_file->d_name);
632+ if (ret) {
633+ fprintf(stderr, "add_xattr_item failed\n");
634+ goto fail;
635+ }
636+
637+ if (S_ISDIR(st.st_mode)) {
638+ dir_entry = malloc(sizeof(struct directory_name_entry));
639+ dir_entry->dir_name = cur_file->d_name;
640+ dir_entry->path = make_path(parent_dir_entry->path,
641+ cur_file->d_name);
642+ dir_entry->inum = cur_inum;
643+ list_add_tail(&dir_entry->list, &dir_head->list);
644+ } else if (S_ISREG(st.st_mode)) {
645+ ret = add_file_items(trans, root, &cur_inode,
646+ cur_inum, parent_inum, &st,
647+ cur_file->d_name, out_fd);
648+ if (ret) {
649+ fprintf(stderr, "add_file_items failed\n");
650+ goto fail;
651+ }
652+ } else if (S_ISLNK(st.st_mode)) {
653+ ret = add_symbolic_link(trans, root,
654+ cur_inum, cur_file->d_name);
655+ if (ret) {
656+ fprintf(stderr, "add_symbolic_link failed\n");
657+ goto fail;
658+ }
659+ }
660+ }
661+
662+ free(parent_dir_entry->path);
663+ free(parent_dir_entry);
664+
665+ index_cnt = 2;
666+
667+ } while (!list_empty(&dir_head->list));
668+
669+ return 0;
670+fail:
671+ free(parent_dir_entry->path);
672+ free(parent_dir_entry);
673+ return -1;
674+}
675+
676+static int open_target(char *output_name)
677+{
678+ int output_fd;
679+ output_fd = open(output_name, O_CREAT | O_RDWR | O_TRUNC,
680+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
681+
682+ return output_fd;
683+}
684+
685+static int create_chunks(struct btrfs_trans_handle *trans,
686+ struct btrfs_root *root, u64 num_of_meta_chunks,
687+ u64 size_of_data)
688+{
689+ u64 chunk_start;
690+ u64 chunk_size;
691+ u64 meta_type = BTRFS_BLOCK_GROUP_METADATA;
692+ u64 data_type = BTRFS_BLOCK_GROUP_DATA;
693+ u64 minimum_data_chunk_size = 64 * 1024 * 1024;
694+ u64 i;
695+ int ret;
696+
697+ for (i = 0; i < num_of_meta_chunks; i++) {
698+ ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
699+ &chunk_start, &chunk_size, meta_type);
700+ BUG_ON(ret);
701+ ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
702+ meta_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
703+ chunk_start, chunk_size);
704+ BUG_ON(ret);
705+ set_extent_dirty(&root->fs_info->free_space_cache,
706+ chunk_start, chunk_start + chunk_size - 1, 0);
707+ }
708+
709+ if (size_of_data < minimum_data_chunk_size)
710+ size_of_data = minimum_data_chunk_size;
711+ ret = btrfs_alloc_data_chunk(trans, root->fs_info->extent_root,
712+ &chunk_start, size_of_data, data_type);
713+ BUG_ON(ret);
714+ ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
715+ data_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
716+ chunk_start, size_of_data);
717+ BUG_ON(ret);
718+ set_extent_dirty(&root->fs_info->free_space_cache,
719+ chunk_start, chunk_start + size_of_data - 1, 0);
720+ return ret;
721+}
722+
723+static int make_image(char *source_dir, struct btrfs_root *root, int out_fd)
724+{
725+ int ret;
726+ struct btrfs_trans_handle *trans;
727+
728+ struct stat root_st;
729+ int root_len;
730+
731+ struct directory_name_entry dir_head;
732+
733+ ret = lstat(source_dir, &root_st);
734+ if (ret) {
735+ fprintf(stderr, "unable to lstat the %s\n", source_dir);
736+ goto fail;
737+ }
738+
739+ root_len = strlen(source_dir);
740+
741+ INIT_LIST_HEAD(&dir_head.list);
742+
743+ trans = btrfs_start_transaction(root, 1);
744+ ret = traverse_directory(trans, root, source_dir, &dir_head, out_fd);
745+ if (ret) {
746+ fprintf(stderr, "unable to traverse_directory\n");
747+ goto fail;
748+ }
749+ btrfs_commit_transaction(trans, root);
750+
751+ printf("Making image is completed.\n");
752+ return 0;
753+fail:
754+ fprintf(stderr, "Making image is aborted.\n");
755+ return -1;
756+}
757+
758+static u64 size_sourcedir(char *dir_name, u64 sectorsize,
759+ u64 *num_of_meta_chunks_ret, u64 *size_of_data_ret)
760+{
761+ u64 dir_size = 0;
762+ u64 total_size = 0;
763+ int ret;
764+ char command[1024];
765+ char path[512];
766+ char *file_name = "temp_file";
767+ FILE *file;
768+ u64 minimum_data_size = 256 * 1024 * 1024; /* 256MB */
769+ u64 default_chunk_size = 8 * 1024 * 1024; /* 8MB */
770+ u64 allocated_meta_size = 8 * 1024 * 1024; /* 8MB */
771+ u64 allocated_total_size = 20 * 1024 * 1024; /* 20MB */
772+ u64 num_of_meta_chunks = 0;
773+ u64 num_of_allocated_meta_chunks =
774+ allocated_meta_size / default_chunk_size;
775+
776+ ret = sprintf(command, "du -B 4096 -s ");
777+ if (ret < 0) {
778+ fprintf(stderr, "error executing sprintf for du command\n");
779+ return -1;
780+ }
781+ strcat(command, dir_name);
782+ strcat(command, " > ");
783+ strcat(command, file_name);
784+ ret = system(command);
785+
786+ file = fopen(file_name, "r");
787+ ret = fscanf(file, "%lld %s\n", &dir_size, path);
788+ fclose(file);
789+ remove(file_name);
790+
791+ dir_size *= sectorsize;
792+ *size_of_data_ret = dir_size;
793+
794+ num_of_meta_chunks = (dir_size / 2) / default_chunk_size;
795+ if (((dir_size / 2) % default_chunk_size) != 0)
796+ num_of_meta_chunks++;
797+ if (num_of_meta_chunks <= num_of_allocated_meta_chunks)
798+ num_of_meta_chunks = 0;
799+ else
800+ num_of_meta_chunks -= num_of_allocated_meta_chunks;
801+
802+ total_size = allocated_total_size + dir_size +
803+ (num_of_meta_chunks * default_chunk_size);
804+
805+ *num_of_meta_chunks_ret = num_of_meta_chunks;
806+
807+ if (total_size < minimum_data_size)
808+ total_size = minimum_data_size;
809+
810+ return total_size;
811+}
812+
813+static int zero_output_file(int out_fd, u64 size, u32 sectorsize)
814+{
815+ int len = sectorsize;
816+ int loop_num = size / sectorsize;
817+ u64 location = 0;
818+ char *buf = malloc(len);
819+ int ret = 0, i;
820+ ssize_t written;
821+
822+ if (!buf)
823+ return -ENOMEM;
824+ memset(buf, 0, len);
825+ for (i = 0; i < loop_num; i++) {
826+ written = pwrite64(out_fd, buf, len, location);
827+ if (written != len)
828+ ret = -EIO;
829+ location += sectorsize;
830+ }
831+ free(buf);
832+ return ret;
833+}
834+
835 int main(int ac, char **av)
836 {
837 char *file;
838@@ -385,9 +1156,15 @@ int main(int ac, char **av)
839 int data_profile_opt = 0;
840 int metadata_profile_opt = 0;
841
842+ char *source_dir = NULL;
843+ int source_dir_set = 0;
844+ char *output = "output.img";
845+ u64 num_of_meta_chunks = 0;
846+ u64 size_of_data = 0;
847+
848 while(1) {
849 int c;
850- c = getopt_long(ac, av, "A:b:l:n:s:m:d:L:VM", long_options,
851+ c = getopt_long(ac, av, "A:b:l:n:s:m:d:L:r:VM", long_options,
852 &option_index);
853 if (c < 0)
854 break;
855@@ -430,6 +1207,10 @@ int main(int ac, char **av)
856 case 'V':
857 print_version();
858 break;
859+ case 'r':
860+ source_dir = optarg;
861+ source_dir_set = 1;
862+ break;
863 default:
864 print_usage();
865 }
866@@ -443,6 +1224,8 @@ int main(int ac, char **av)
867 fprintf(stderr, "Illegal nodesize %u\n", nodesize);
868 exit(1);
869 }
870+ if (source_dir_set)
871+ ac++;
872 ac = ac - optind;
873 if (ac == 0)
874 print_usage();
875@@ -450,28 +1233,47 @@ int main(int ac, char **av)
876 printf("\nWARNING! - %s IS EXPERIMENTAL\n", BTRFS_BUILD_VERSION);
877 printf("WARNING! - see http://btrfs.wiki.kernel.org before using\n\n");
878
879- file = av[optind++];
880- ret = check_mounted(file);
881- if (ret < 0) {
882- fprintf(stderr, "error checking %s mount status\n", file);
883- exit(1);
884- }
885- if (ret == 1) {
886- fprintf(stderr, "%s is mounted\n", file);
887- exit(1);
888- }
889- ac--;
890- fd = open(file, O_RDWR);
891- if (fd < 0) {
892- fprintf(stderr, "unable to open %s\n", file);
893- exit(1);
894+ if (source_dir == 0) {
895+ file = av[optind++];
896+ ret = check_mounted(file);
897+ if (ret < 0) {
898+ fprintf(stderr, "error checking %s mount status\n", file);
899+ exit(1);
900+ }
901+ if (ret == 1) {
902+ fprintf(stderr, "%s is mounted\n", file);
903+ exit(1);
904+ }
905+ ac--;
906+ fd = open(file, O_RDWR);
907+ if (fd < 0) {
908+ fprintf(stderr, "unable to open %s\n", file);
909+ exit(1);
910+ }
911+ first_fd = fd;
912+ first_file = file;
913+ ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count, &mixed);
914+ if (block_count == 0)
915+ block_count = dev_block_count;
916+ } else {
917+ ac = 0;
918+ fd = open_target(output);
919+ if (fd < 0) {
920+ fprintf(stderr, "unable to open the %s\n", file);
921+ exit(1);
922+ }
923+
924+ file = output;
925+ first_fd = fd;
926+ first_file = file;
927+ block_count = size_sourcedir(source_dir, sectorsize,
928+ &num_of_meta_chunks, &size_of_data);
929+ ret = zero_output_file(fd, block_count, sectorsize);
930+ if (ret) {
931+ fprintf(stderr, "unable to zero the output file\n");
932+ exit(1);
933+ }
934 }
935- first_fd = fd;
936- first_file = file;
937- ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
938- &mixed);
939- if (block_count == 0)
940- block_count = dev_block_count;
941 if (mixed) {
942 if (!metadata_profile_opt)
943 metadata_profile = 0;
944@@ -558,9 +1360,11 @@ int main(int ac, char **av)
945 }
946
947 raid_groups:
948- ret = create_raid_groups(trans, root, data_profile,
949+ if (!source_dir_set) {
950+ ret = create_raid_groups(trans, root, data_profile,
951 metadata_profile, mixed);
952- BUG_ON(ret);
953+ BUG_ON(ret);
954+ }
955
956 ret = create_data_reloc_tree(trans, root);
957 BUG_ON(ret);
958@@ -580,6 +1384,18 @@ raid_groups:
959
960 printf("%s\n", BTRFS_BUILD_VERSION);
961 btrfs_commit_transaction(trans, root);
962+
963+ if (source_dir_set) {
964+ trans = btrfs_start_transaction(root, 1);
965+ ret = create_chunks(trans, root,
966+ num_of_meta_chunks, size_of_data);
967+ BUG_ON(ret);
968+ btrfs_commit_transaction(trans, root);
969+
970+ ret = make_image(source_dir, root, fd);
971+ BUG_ON(ret);
972+ }
973+
974 ret = close_ctree(root);
975 BUG_ON(ret);
976
977diff --git a/volumes.c b/volumes.c
978index 7671855..4bb77e2 100644
979--- a/volumes.c
980+++ b/volumes.c
981@@ -857,6 +857,110 @@ again:
982 return ret;
983 }
984
985+int btrfs_alloc_data_chunk(struct btrfs_trans_handle *trans,
986+ struct btrfs_root *extent_root, u64 *start,
987+ u64 num_bytes, u64 type)
988+{
989+ u64 dev_offset;
990+ struct btrfs_fs_info *info = extent_root->fs_info;
991+ struct btrfs_root *chunk_root = extent_root->fs_info->chunk_root;
992+ struct btrfs_stripe *stripes;
993+ struct btrfs_device *device = NULL;
994+ struct btrfs_chunk *chunk;
995+ struct list_head *dev_list = &extent_root->fs_info->fs_devices->devices;
996+ struct list_head *cur;
997+ struct map_lookup *map;
998+ u64 physical;
999+ u64 calc_size = 8 * 1024 * 1024;
1000+ int num_stripes = 1;
1001+ int sub_stripes = 0;
1002+ int ret;
1003+ int index;
1004+ int stripe_len = 64 * 1024;
1005+ struct btrfs_key key;
1006+
1007+ key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID;
1008+ key.type = BTRFS_CHUNK_ITEM_KEY;
1009+ ret = find_next_chunk(chunk_root, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
1010+ &key.offset);
1011+ if (ret)
1012+ return ret;
1013+
1014+ chunk = kmalloc(btrfs_chunk_item_size(num_stripes), GFP_NOFS);
1015+ if (!chunk)
1016+ return -ENOMEM;
1017+
1018+ map = kmalloc(map_lookup_size(num_stripes), GFP_NOFS);
1019+ if (!map) {
1020+ kfree(chunk);
1021+ return -ENOMEM;
1022+ }
1023+
1024+ stripes = &chunk->stripe;
1025+ calc_size = num_bytes;
1026+
1027+ index = 0;
1028+ cur = dev_list->next;
1029+ device = list_entry(cur, struct btrfs_device, dev_list);
1030+
1031+ while (index < num_stripes) {
1032+ struct btrfs_stripe *stripe;
1033+
1034+ ret = btrfs_alloc_dev_extent(trans, device,
1035+ info->chunk_root->root_key.objectid,
1036+ BTRFS_FIRST_CHUNK_TREE_OBJECTID, key.offset,
1037+ calc_size, &dev_offset);
1038+ BUG_ON(ret);
1039+
1040+ device->bytes_used += calc_size;
1041+ ret = btrfs_update_device(trans, device);
1042+ BUG_ON(ret);
1043+
1044+ map->stripes[index].dev = device;
1045+ map->stripes[index].physical = dev_offset;
1046+ stripe = stripes + index;
1047+ btrfs_set_stack_stripe_devid(stripe, device->devid);
1048+ btrfs_set_stack_stripe_offset(stripe, dev_offset);
1049+ memcpy(stripe->dev_uuid, device->uuid, BTRFS_UUID_SIZE);
1050+ physical = dev_offset;
1051+ index++;
1052+ }
1053+
1054+ /* key was set above */
1055+ btrfs_set_stack_chunk_length(chunk, num_bytes);
1056+ btrfs_set_stack_chunk_owner(chunk, extent_root->root_key.objectid);
1057+ btrfs_set_stack_chunk_stripe_len(chunk, stripe_len);
1058+ btrfs_set_stack_chunk_type(chunk, type);
1059+ btrfs_set_stack_chunk_num_stripes(chunk, num_stripes);
1060+ btrfs_set_stack_chunk_io_align(chunk, stripe_len);
1061+ btrfs_set_stack_chunk_io_width(chunk, stripe_len);
1062+ btrfs_set_stack_chunk_sector_size(chunk, extent_root->sectorsize);
1063+ btrfs_set_stack_chunk_sub_stripes(chunk, sub_stripes);
1064+ map->sector_size = extent_root->sectorsize;
1065+ map->stripe_len = stripe_len;
1066+ map->io_align = stripe_len;
1067+ map->io_width = stripe_len;
1068+ map->type = type;
1069+ map->num_stripes = num_stripes;
1070+ map->sub_stripes = sub_stripes;
1071+
1072+ ret = btrfs_insert_item(trans, chunk_root, &key, chunk,
1073+ btrfs_chunk_item_size(num_stripes));
1074+ BUG_ON(ret);
1075+ *start = key.offset;
1076+
1077+ map->ce.start = key.offset;
1078+ map->ce.size = num_bytes;
1079+
1080+ ret = insert_existing_cache_extent(
1081+ &extent_root->fs_info->mapping_tree.cache_tree,
1082+ &map->ce);
1083+ BUG_ON(ret);
1084+
1085+ kfree(chunk);
1086+ return ret;
1087+}
1088+
1089 void btrfs_mapping_init(struct btrfs_mapping_tree *tree)
1090 {
1091 cache_tree_init(&tree->cache_tree);
1092diff --git a/volumes.h b/volumes.h
1093index bb78751..93b0e48 100644
1094--- a/volumes.h
1095+++ b/volumes.h
1096@@ -107,6 +107,9 @@ int btrfs_read_chunk_tree(struct btrfs_root *root);
1097 int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
1098 struct btrfs_root *extent_root, u64 *start,
1099 u64 *num_bytes, u64 type);
1100+int btrfs_alloc_data_chunk(struct btrfs_trans_handle *trans,
1101+ struct btrfs_root *extent_root, u64 *start,
1102+ u64 num_bytes, u64 type);
1103 int btrfs_read_super_device(struct btrfs_root *root, struct extent_buffer *buf);
1104 int btrfs_add_device(struct btrfs_trans_handle *trans,
1105 struct btrfs_root *root,
1106--
11071.7.2.3
1108
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-05-03 04:54:58 +0000