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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
293d7fbd SG |
2 | /* |
3 | * (C) Copyright 2011 - 2012 Samsung Electronics | |
4 | * EXT4 filesystem implementation in Uboot by | |
5 | * Uma Shankar <uma.shankar@samsung.com> | |
6 | * Manjunatha C Achar <a.manjunatha@samsung.com> | |
7 | * | |
8 | * ext4ls and ext4load : Based on ext2 ls and load support in Uboot. | |
9 | * Ext4 read optimization taken from Open-Moko | |
10 | * Qi bootloader | |
11 | * | |
12 | * (C) Copyright 2004 | |
13 | * esd gmbh <www.esd-electronics.com> | |
14 | * Reinhard Arlt <reinhard.arlt@esd-electronics.com> | |
15 | * | |
16 | * based on code from grub2 fs/ext2.c and fs/fshelp.c by | |
17 | * GRUB -- GRand Unified Bootloader | |
18 | * Copyright (C) 2003, 2004 Free Software Foundation, Inc. | |
19 | * | |
20 | * ext4write : Based on generic ext4 protocol. | |
293d7fbd SG |
21 | */ |
22 | ||
23 | ||
24 | #include <common.h> | |
cf92e05c | 25 | #include <memalign.h> |
293d7fbd SG |
26 | #include <linux/stat.h> |
27 | #include <div64.h> | |
28 | #include "ext4_common.h" | |
29 | ||
58a9ecba MW |
30 | static inline void ext4fs_sb_free_inodes_inc(struct ext2_sblock *sb) |
31 | { | |
32 | sb->free_inodes = cpu_to_le32(le32_to_cpu(sb->free_inodes) + 1); | |
33 | } | |
34 | ||
35 | static inline void ext4fs_sb_free_blocks_inc(struct ext2_sblock *sb) | |
36 | { | |
37 | sb->free_blocks = cpu_to_le32(le32_to_cpu(sb->free_blocks) + 1); | |
38 | } | |
39 | ||
749e93ee SB |
40 | static inline void ext4fs_bg_free_inodes_inc |
41 | (struct ext2_block_group *bg, const struct ext_filesystem *fs) | |
58a9ecba | 42 | { |
749e93ee SB |
43 | uint32_t free_inodes = le16_to_cpu(bg->free_inodes); |
44 | if (fs->gdsize == 64) | |
45 | free_inodes += le16_to_cpu(bg->free_inodes_high) << 16; | |
46 | free_inodes++; | |
47 | ||
48 | bg->free_inodes = cpu_to_le16(free_inodes & 0xffff); | |
49 | if (fs->gdsize == 64) | |
50 | bg->free_inodes_high = cpu_to_le16(free_inodes >> 16); | |
58a9ecba MW |
51 | } |
52 | ||
749e93ee SB |
53 | static inline void ext4fs_bg_free_blocks_inc |
54 | (struct ext2_block_group *bg, const struct ext_filesystem *fs) | |
58a9ecba | 55 | { |
749e93ee SB |
56 | uint32_t free_blocks = le16_to_cpu(bg->free_blocks); |
57 | if (fs->gdsize == 64) | |
58 | free_blocks += le16_to_cpu(bg->free_blocks_high) << 16; | |
59 | free_blocks++; | |
60 | ||
61 | bg->free_blocks = cpu_to_le16(free_blocks & 0xffff); | |
62 | if (fs->gdsize == 64) | |
63 | bg->free_blocks_high = cpu_to_le16(free_blocks >> 16); | |
58a9ecba MW |
64 | } |
65 | ||
293d7fbd SG |
66 | static void ext4fs_update(void) |
67 | { | |
68 | short i; | |
69 | ext4fs_update_journal(); | |
70 | struct ext_filesystem *fs = get_fs(); | |
688d0e79 | 71 | struct ext2_block_group *bgd = NULL; |
293d7fbd SG |
72 | |
73 | /* update super block */ | |
74 | put_ext4((uint64_t)(SUPERBLOCK_SIZE), | |
75 | (struct ext2_sblock *)fs->sb, (uint32_t)SUPERBLOCK_SIZE); | |
76 | ||
688d0e79 | 77 | /* update block bitmaps */ |
293d7fbd | 78 | for (i = 0; i < fs->no_blkgrp; i++) { |
688d0e79 SB |
79 | bgd = ext4fs_get_group_descriptor(fs, i); |
80 | bgd->bg_checksum = cpu_to_le16(ext4fs_checksum_update(i)); | |
81 | uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs); | |
82 | put_ext4(b_bitmap_blk * fs->blksz, | |
293d7fbd SG |
83 | fs->blk_bmaps[i], fs->blksz); |
84 | } | |
85 | ||
688d0e79 | 86 | /* update inode bitmaps */ |
293d7fbd | 87 | for (i = 0; i < fs->no_blkgrp; i++) { |
688d0e79 SB |
88 | bgd = ext4fs_get_group_descriptor(fs, i); |
89 | uint64_t i_bitmap_blk = ext4fs_bg_get_inode_id(bgd, fs); | |
90 | put_ext4(i_bitmap_blk * fs->blksz, | |
293d7fbd SG |
91 | fs->inode_bmaps[i], fs->blksz); |
92 | } | |
93 | ||
94 | /* update the block group descriptor table */ | |
0550870b | 95 | put_ext4((uint64_t)((uint64_t)fs->gdtable_blkno * (uint64_t)fs->blksz), |
293d7fbd SG |
96 | (struct ext2_block_group *)fs->gdtable, |
97 | (fs->blksz * fs->no_blk_pergdt)); | |
98 | ||
99 | ext4fs_dump_metadata(); | |
100 | ||
101 | gindex = 0; | |
102 | gd_index = 0; | |
103 | } | |
104 | ||
105 | int ext4fs_get_bgdtable(void) | |
106 | { | |
107 | int status; | |
293d7fbd | 108 | struct ext_filesystem *fs = get_fs(); |
688d0e79 SB |
109 | int gdsize_total = ROUND(fs->no_blkgrp * fs->gdsize, fs->blksz); |
110 | fs->no_blk_pergdt = gdsize_total / fs->blksz; | |
293d7fbd SG |
111 | |
112 | /* allocate memory for gdtable */ | |
688d0e79 | 113 | fs->gdtable = zalloc(gdsize_total); |
293d7fbd SG |
114 | if (!fs->gdtable) |
115 | return -ENOMEM; | |
116 | /* read the group descriptor table */ | |
04735e9c FL |
117 | status = ext4fs_devread((lbaint_t)fs->gdtable_blkno * fs->sect_perblk, |
118 | 0, fs->blksz * fs->no_blk_pergdt, fs->gdtable); | |
293d7fbd SG |
119 | if (status == 0) |
120 | goto fail; | |
121 | ||
122 | if (ext4fs_log_gdt(fs->gdtable)) { | |
123 | printf("Error in ext4fs_log_gdt\n"); | |
124 | return -1; | |
125 | } | |
126 | ||
127 | return 0; | |
128 | fail: | |
129 | free(fs->gdtable); | |
130 | fs->gdtable = NULL; | |
131 | ||
132 | return -1; | |
133 | } | |
134 | ||
135 | static void delete_single_indirect_block(struct ext2_inode *inode) | |
136 | { | |
137 | struct ext2_block_group *bgd = NULL; | |
138 | static int prev_bg_bmap_idx = -1; | |
58a9ecba | 139 | uint32_t blknr; |
293d7fbd SG |
140 | int remainder; |
141 | int bg_idx; | |
142 | int status; | |
58a9ecba | 143 | uint32_t blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group); |
293d7fbd SG |
144 | struct ext_filesystem *fs = get_fs(); |
145 | char *journal_buffer = zalloc(fs->blksz); | |
146 | if (!journal_buffer) { | |
147 | printf("No memory\n"); | |
148 | return; | |
149 | } | |
293d7fbd SG |
150 | |
151 | /* deleting the single indirect block associated with inode */ | |
152 | if (inode->b.blocks.indir_block != 0) { | |
58a9ecba MW |
153 | blknr = le32_to_cpu(inode->b.blocks.indir_block); |
154 | debug("SIPB releasing %u\n", blknr); | |
35dd055b ŁM |
155 | bg_idx = blknr / blk_per_grp; |
156 | if (fs->blksz == 1024) { | |
293d7fbd SG |
157 | remainder = blknr % blk_per_grp; |
158 | if (!remainder) | |
159 | bg_idx--; | |
160 | } | |
161 | ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx], bg_idx); | |
688d0e79 SB |
162 | /* get block group descriptor table */ |
163 | bgd = ext4fs_get_group_descriptor(fs, bg_idx); | |
749e93ee | 164 | ext4fs_bg_free_blocks_inc(bgd, fs); |
58a9ecba | 165 | ext4fs_sb_free_blocks_inc(fs->sb); |
293d7fbd SG |
166 | /* journal backup */ |
167 | if (prev_bg_bmap_idx != bg_idx) { | |
688d0e79 | 168 | uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs); |
58a9ecba | 169 | status = ext4fs_devread( |
688d0e79 SB |
170 | b_bitmap_blk * fs->sect_perblk, |
171 | 0, fs->blksz, journal_buffer); | |
293d7fbd SG |
172 | if (status == 0) |
173 | goto fail; | |
688d0e79 | 174 | if (ext4fs_log_journal(journal_buffer, b_bitmap_blk)) |
293d7fbd SG |
175 | goto fail; |
176 | prev_bg_bmap_idx = bg_idx; | |
177 | } | |
178 | } | |
179 | fail: | |
180 | free(journal_buffer); | |
181 | } | |
182 | ||
183 | static void delete_double_indirect_block(struct ext2_inode *inode) | |
184 | { | |
185 | int i; | |
186 | short status; | |
187 | static int prev_bg_bmap_idx = -1; | |
58a9ecba | 188 | uint32_t blknr; |
293d7fbd SG |
189 | int remainder; |
190 | int bg_idx; | |
58a9ecba MW |
191 | uint32_t blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group); |
192 | __le32 *di_buffer = NULL; | |
193 | void *dib_start_addr = NULL; | |
293d7fbd SG |
194 | struct ext2_block_group *bgd = NULL; |
195 | struct ext_filesystem *fs = get_fs(); | |
196 | char *journal_buffer = zalloc(fs->blksz); | |
197 | if (!journal_buffer) { | |
198 | printf("No memory\n"); | |
199 | return; | |
200 | } | |
293d7fbd SG |
201 | |
202 | if (inode->b.blocks.double_indir_block != 0) { | |
203 | di_buffer = zalloc(fs->blksz); | |
204 | if (!di_buffer) { | |
205 | printf("No memory\n"); | |
206 | return; | |
207 | } | |
58a9ecba MW |
208 | dib_start_addr = di_buffer; |
209 | blknr = le32_to_cpu(inode->b.blocks.double_indir_block); | |
04735e9c FL |
210 | status = ext4fs_devread((lbaint_t)blknr * fs->sect_perblk, 0, |
211 | fs->blksz, (char *)di_buffer); | |
293d7fbd SG |
212 | for (i = 0; i < fs->blksz / sizeof(int); i++) { |
213 | if (*di_buffer == 0) | |
214 | break; | |
215 | ||
216 | debug("DICB releasing %u\n", *di_buffer); | |
58a9ecba | 217 | bg_idx = le32_to_cpu(*di_buffer) / blk_per_grp; |
35dd055b | 218 | if (fs->blksz == 1024) { |
58a9ecba | 219 | remainder = le32_to_cpu(*di_buffer) % blk_per_grp; |
293d7fbd SG |
220 | if (!remainder) |
221 | bg_idx--; | |
222 | } | |
688d0e79 SB |
223 | /* get block group descriptor table */ |
224 | bgd = ext4fs_get_group_descriptor(fs, bg_idx); | |
58a9ecba | 225 | ext4fs_reset_block_bmap(le32_to_cpu(*di_buffer), |
293d7fbd SG |
226 | fs->blk_bmaps[bg_idx], bg_idx); |
227 | di_buffer++; | |
749e93ee | 228 | ext4fs_bg_free_blocks_inc(bgd, fs); |
58a9ecba | 229 | ext4fs_sb_free_blocks_inc(fs->sb); |
293d7fbd SG |
230 | /* journal backup */ |
231 | if (prev_bg_bmap_idx != bg_idx) { | |
688d0e79 SB |
232 | uint64_t b_bitmap_blk = |
233 | ext4fs_bg_get_block_id(bgd, fs); | |
234 | status = ext4fs_devread(b_bitmap_blk | |
293d7fbd SG |
235 | * fs->sect_perblk, 0, |
236 | fs->blksz, | |
237 | journal_buffer); | |
238 | if (status == 0) | |
239 | goto fail; | |
240 | ||
241 | if (ext4fs_log_journal(journal_buffer, | |
688d0e79 | 242 | b_bitmap_blk)) |
293d7fbd SG |
243 | goto fail; |
244 | prev_bg_bmap_idx = bg_idx; | |
245 | } | |
246 | } | |
247 | ||
248 | /* removing the parent double indirect block */ | |
58a9ecba | 249 | blknr = le32_to_cpu(inode->b.blocks.double_indir_block); |
35dd055b ŁM |
250 | bg_idx = blknr / blk_per_grp; |
251 | if (fs->blksz == 1024) { | |
293d7fbd SG |
252 | remainder = blknr % blk_per_grp; |
253 | if (!remainder) | |
254 | bg_idx--; | |
255 | } | |
688d0e79 SB |
256 | /* get block group descriptor table */ |
257 | bgd = ext4fs_get_group_descriptor(fs, bg_idx); | |
293d7fbd | 258 | ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx], bg_idx); |
749e93ee | 259 | ext4fs_bg_free_blocks_inc(bgd, fs); |
58a9ecba | 260 | ext4fs_sb_free_blocks_inc(fs->sb); |
293d7fbd SG |
261 | /* journal backup */ |
262 | if (prev_bg_bmap_idx != bg_idx) { | |
688d0e79 SB |
263 | uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs); |
264 | status = ext4fs_devread(b_bitmap_blk * fs->sect_perblk, | |
265 | 0, fs->blksz, journal_buffer); | |
293d7fbd SG |
266 | if (status == 0) |
267 | goto fail; | |
268 | ||
688d0e79 | 269 | if (ext4fs_log_journal(journal_buffer, b_bitmap_blk)) |
293d7fbd SG |
270 | goto fail; |
271 | prev_bg_bmap_idx = bg_idx; | |
272 | } | |
58a9ecba | 273 | debug("DIPB releasing %d\n", blknr); |
293d7fbd SG |
274 | } |
275 | fail: | |
58a9ecba | 276 | free(dib_start_addr); |
293d7fbd SG |
277 | free(journal_buffer); |
278 | } | |
279 | ||
280 | static void delete_triple_indirect_block(struct ext2_inode *inode) | |
281 | { | |
282 | int i, j; | |
283 | short status; | |
284 | static int prev_bg_bmap_idx = -1; | |
58a9ecba | 285 | uint32_t blknr; |
293d7fbd SG |
286 | int remainder; |
287 | int bg_idx; | |
58a9ecba MW |
288 | uint32_t blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group); |
289 | __le32 *tigp_buffer = NULL; | |
290 | void *tib_start_addr = NULL; | |
291 | __le32 *tip_buffer = NULL; | |
292 | void *tipb_start_addr = NULL; | |
293d7fbd SG |
293 | struct ext2_block_group *bgd = NULL; |
294 | struct ext_filesystem *fs = get_fs(); | |
295 | char *journal_buffer = zalloc(fs->blksz); | |
296 | if (!journal_buffer) { | |
297 | printf("No memory\n"); | |
298 | return; | |
299 | } | |
293d7fbd SG |
300 | |
301 | if (inode->b.blocks.triple_indir_block != 0) { | |
302 | tigp_buffer = zalloc(fs->blksz); | |
303 | if (!tigp_buffer) { | |
304 | printf("No memory\n"); | |
305 | return; | |
306 | } | |
58a9ecba MW |
307 | tib_start_addr = tigp_buffer; |
308 | blknr = le32_to_cpu(inode->b.blocks.triple_indir_block); | |
04735e9c FL |
309 | status = ext4fs_devread((lbaint_t)blknr * fs->sect_perblk, 0, |
310 | fs->blksz, (char *)tigp_buffer); | |
293d7fbd SG |
311 | for (i = 0; i < fs->blksz / sizeof(int); i++) { |
312 | if (*tigp_buffer == 0) | |
313 | break; | |
314 | debug("tigp buffer releasing %u\n", *tigp_buffer); | |
315 | ||
316 | tip_buffer = zalloc(fs->blksz); | |
317 | if (!tip_buffer) | |
318 | goto fail; | |
58a9ecba MW |
319 | tipb_start_addr = tip_buffer; |
320 | status = ext4fs_devread((lbaint_t)le32_to_cpu(*tigp_buffer) * | |
293d7fbd SG |
321 | fs->sect_perblk, 0, fs->blksz, |
322 | (char *)tip_buffer); | |
323 | for (j = 0; j < fs->blksz / sizeof(int); j++) { | |
58a9ecba | 324 | if (le32_to_cpu(*tip_buffer) == 0) |
293d7fbd | 325 | break; |
58a9ecba | 326 | bg_idx = le32_to_cpu(*tip_buffer) / blk_per_grp; |
35dd055b | 327 | if (fs->blksz == 1024) { |
58a9ecba | 328 | remainder = le32_to_cpu(*tip_buffer) % blk_per_grp; |
293d7fbd SG |
329 | if (!remainder) |
330 | bg_idx--; | |
331 | } | |
332 | ||
58a9ecba | 333 | ext4fs_reset_block_bmap(le32_to_cpu(*tip_buffer), |
293d7fbd SG |
334 | fs->blk_bmaps[bg_idx], |
335 | bg_idx); | |
336 | ||
337 | tip_buffer++; | |
688d0e79 SB |
338 | /* get block group descriptor table */ |
339 | bgd = ext4fs_get_group_descriptor(fs, bg_idx); | |
749e93ee | 340 | ext4fs_bg_free_blocks_inc(bgd, fs); |
58a9ecba | 341 | ext4fs_sb_free_blocks_inc(fs->sb); |
293d7fbd SG |
342 | /* journal backup */ |
343 | if (prev_bg_bmap_idx != bg_idx) { | |
688d0e79 SB |
344 | uint64_t b_bitmap_blk = |
345 | ext4fs_bg_get_block_id(bgd, fs); | |
293d7fbd SG |
346 | status = |
347 | ext4fs_devread( | |
688d0e79 | 348 | b_bitmap_blk * |
293d7fbd SG |
349 | fs->sect_perblk, 0, |
350 | fs->blksz, | |
351 | journal_buffer); | |
352 | if (status == 0) | |
353 | goto fail; | |
354 | ||
355 | if (ext4fs_log_journal(journal_buffer, | |
688d0e79 | 356 | b_bitmap_blk)) |
293d7fbd SG |
357 | goto fail; |
358 | prev_bg_bmap_idx = bg_idx; | |
359 | } | |
360 | } | |
361 | free(tipb_start_addr); | |
362 | tipb_start_addr = NULL; | |
363 | ||
364 | /* | |
365 | * removing the grand parent blocks | |
366 | * which is connected to inode | |
367 | */ | |
58a9ecba | 368 | bg_idx = le32_to_cpu(*tigp_buffer) / blk_per_grp; |
35dd055b | 369 | if (fs->blksz == 1024) { |
58a9ecba | 370 | remainder = le32_to_cpu(*tigp_buffer) % blk_per_grp; |
293d7fbd SG |
371 | if (!remainder) |
372 | bg_idx--; | |
373 | } | |
58a9ecba | 374 | ext4fs_reset_block_bmap(le32_to_cpu(*tigp_buffer), |
293d7fbd SG |
375 | fs->blk_bmaps[bg_idx], bg_idx); |
376 | ||
377 | tigp_buffer++; | |
688d0e79 SB |
378 | /* get block group descriptor table */ |
379 | bgd = ext4fs_get_group_descriptor(fs, bg_idx); | |
749e93ee | 380 | ext4fs_bg_free_blocks_inc(bgd, fs); |
58a9ecba | 381 | ext4fs_sb_free_blocks_inc(fs->sb); |
293d7fbd SG |
382 | /* journal backup */ |
383 | if (prev_bg_bmap_idx != bg_idx) { | |
688d0e79 SB |
384 | uint64_t b_bitmap_blk = |
385 | ext4fs_bg_get_block_id(bgd, fs); | |
293d7fbd | 386 | memset(journal_buffer, '\0', fs->blksz); |
688d0e79 SB |
387 | status = ext4fs_devread(b_bitmap_blk * |
388 | fs->sect_perblk, 0, | |
389 | fs->blksz, | |
390 | journal_buffer); | |
293d7fbd SG |
391 | if (status == 0) |
392 | goto fail; | |
393 | ||
394 | if (ext4fs_log_journal(journal_buffer, | |
688d0e79 | 395 | b_bitmap_blk)) |
293d7fbd SG |
396 | goto fail; |
397 | prev_bg_bmap_idx = bg_idx; | |
398 | } | |
399 | } | |
400 | ||
401 | /* removing the grand parent triple indirect block */ | |
58a9ecba | 402 | blknr = le32_to_cpu(inode->b.blocks.triple_indir_block); |
35dd055b ŁM |
403 | bg_idx = blknr / blk_per_grp; |
404 | if (fs->blksz == 1024) { | |
293d7fbd SG |
405 | remainder = blknr % blk_per_grp; |
406 | if (!remainder) | |
407 | bg_idx--; | |
408 | } | |
409 | ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx], bg_idx); | |
688d0e79 SB |
410 | /* get block group descriptor table */ |
411 | bgd = ext4fs_get_group_descriptor(fs, bg_idx); | |
749e93ee | 412 | ext4fs_bg_free_blocks_inc(bgd, fs); |
58a9ecba | 413 | ext4fs_sb_free_blocks_inc(fs->sb); |
293d7fbd SG |
414 | /* journal backup */ |
415 | if (prev_bg_bmap_idx != bg_idx) { | |
688d0e79 SB |
416 | uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs); |
417 | status = ext4fs_devread(b_bitmap_blk * fs->sect_perblk, | |
418 | 0, fs->blksz, journal_buffer); | |
293d7fbd SG |
419 | if (status == 0) |
420 | goto fail; | |
421 | ||
688d0e79 | 422 | if (ext4fs_log_journal(journal_buffer, b_bitmap_blk)) |
293d7fbd SG |
423 | goto fail; |
424 | prev_bg_bmap_idx = bg_idx; | |
425 | } | |
58a9ecba | 426 | debug("tigp buffer itself releasing %d\n", blknr); |
293d7fbd SG |
427 | } |
428 | fail: | |
429 | free(tib_start_addr); | |
430 | free(tipb_start_addr); | |
431 | free(journal_buffer); | |
432 | } | |
433 | ||
434 | static int ext4fs_delete_file(int inodeno) | |
435 | { | |
436 | struct ext2_inode inode; | |
437 | short status; | |
438 | int i; | |
439 | int remainder; | |
440 | long int blknr; | |
441 | int bg_idx; | |
442 | int ibmap_idx; | |
443 | char *read_buffer = NULL; | |
444 | char *start_block_address = NULL; | |
58a9ecba | 445 | uint32_t no_blocks; |
293d7fbd SG |
446 | |
447 | static int prev_bg_bmap_idx = -1; | |
448 | unsigned int inodes_per_block; | |
58a9ecba | 449 | uint32_t blkno; |
293d7fbd | 450 | unsigned int blkoff; |
58a9ecba MW |
451 | uint32_t blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group); |
452 | uint32_t inode_per_grp = le32_to_cpu(ext4fs_root->sblock.inodes_per_group); | |
293d7fbd SG |
453 | struct ext2_inode *inode_buffer = NULL; |
454 | struct ext2_block_group *bgd = NULL; | |
455 | struct ext_filesystem *fs = get_fs(); | |
456 | char *journal_buffer = zalloc(fs->blksz); | |
457 | if (!journal_buffer) | |
458 | return -ENOMEM; | |
293d7fbd SG |
459 | status = ext4fs_read_inode(ext4fs_root, inodeno, &inode); |
460 | if (status == 0) | |
461 | goto fail; | |
462 | ||
463 | /* read the block no allocated to a file */ | |
58a9ecba MW |
464 | no_blocks = le32_to_cpu(inode.size) / fs->blksz; |
465 | if (le32_to_cpu(inode.size) % fs->blksz) | |
293d7fbd SG |
466 | no_blocks++; |
467 | ||
468 | if (le32_to_cpu(inode.flags) & EXT4_EXTENTS_FL) { | |
b779e029 SB |
469 | /* FIXME delete extent index blocks, i.e. eh_depth >= 1 */ |
470 | struct ext4_extent_header *eh = | |
471 | (struct ext4_extent_header *) | |
472 | inode.b.blocks.dir_blocks; | |
473 | debug("del: dep=%d entries=%d\n", eh->eh_depth, eh->eh_entries); | |
293d7fbd | 474 | } else { |
293d7fbd SG |
475 | delete_single_indirect_block(&inode); |
476 | delete_double_indirect_block(&inode); | |
477 | delete_triple_indirect_block(&inode); | |
b779e029 | 478 | } |
293d7fbd | 479 | |
b779e029 SB |
480 | /* release data blocks */ |
481 | for (i = 0; i < no_blocks; i++) { | |
482 | blknr = read_allocated_block(&inode, i); | |
de9e8316 SB |
483 | if (blknr == 0) |
484 | continue; | |
485 | if (blknr < 0) | |
486 | goto fail; | |
b779e029 SB |
487 | bg_idx = blknr / blk_per_grp; |
488 | if (fs->blksz == 1024) { | |
489 | remainder = blknr % blk_per_grp; | |
490 | if (!remainder) | |
491 | bg_idx--; | |
492 | } | |
493 | ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx], | |
494 | bg_idx); | |
495 | debug("EXT4 Block releasing %ld: %d\n", blknr, bg_idx); | |
293d7fbd | 496 | |
688d0e79 SB |
497 | /* get block group descriptor table */ |
498 | bgd = ext4fs_get_group_descriptor(fs, bg_idx); | |
749e93ee | 499 | ext4fs_bg_free_blocks_inc(bgd, fs); |
b779e029 SB |
500 | ext4fs_sb_free_blocks_inc(fs->sb); |
501 | /* journal backup */ | |
502 | if (prev_bg_bmap_idx != bg_idx) { | |
688d0e79 SB |
503 | uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs); |
504 | status = ext4fs_devread(b_bitmap_blk * fs->sect_perblk, | |
b779e029 SB |
505 | 0, fs->blksz, |
506 | journal_buffer); | |
507 | if (status == 0) | |
508 | goto fail; | |
688d0e79 | 509 | if (ext4fs_log_journal(journal_buffer, b_bitmap_blk)) |
b779e029 SB |
510 | goto fail; |
511 | prev_bg_bmap_idx = bg_idx; | |
293d7fbd SG |
512 | } |
513 | } | |
514 | ||
b779e029 | 515 | /* release inode */ |
293d7fbd SG |
516 | /* from the inode no to blockno */ |
517 | inodes_per_block = fs->blksz / fs->inodesz; | |
518 | ibmap_idx = inodeno / inode_per_grp; | |
519 | ||
520 | /* get the block no */ | |
521 | inodeno--; | |
688d0e79 SB |
522 | /* get block group descriptor table */ |
523 | bgd = ext4fs_get_group_descriptor(fs, ibmap_idx); | |
524 | blkno = ext4fs_bg_get_inode_table_id(bgd, fs) + | |
58a9ecba | 525 | (inodeno % inode_per_grp) / inodes_per_block; |
293d7fbd SG |
526 | |
527 | /* get the offset of the inode */ | |
528 | blkoff = ((inodeno) % inodes_per_block) * fs->inodesz; | |
529 | ||
530 | /* read the block no containing the inode */ | |
531 | read_buffer = zalloc(fs->blksz); | |
532 | if (!read_buffer) | |
533 | goto fail; | |
534 | start_block_address = read_buffer; | |
04735e9c | 535 | status = ext4fs_devread((lbaint_t)blkno * fs->sect_perblk, |
293d7fbd SG |
536 | 0, fs->blksz, read_buffer); |
537 | if (status == 0) | |
538 | goto fail; | |
539 | ||
540 | if (ext4fs_log_journal(read_buffer, blkno)) | |
541 | goto fail; | |
542 | ||
543 | read_buffer = read_buffer + blkoff; | |
544 | inode_buffer = (struct ext2_inode *)read_buffer; | |
87f9fdc0 | 545 | memset(inode_buffer, '\0', fs->inodesz); |
293d7fbd SG |
546 | |
547 | /* write the inode to original position in inode table */ | |
548 | if (ext4fs_put_metadata(start_block_address, blkno)) | |
549 | goto fail; | |
550 | ||
551 | /* update the respective inode bitmaps */ | |
552 | inodeno++; | |
553 | ext4fs_reset_inode_bmap(inodeno, fs->inode_bmaps[ibmap_idx], ibmap_idx); | |
749e93ee | 554 | ext4fs_bg_free_inodes_inc(bgd, fs); |
58a9ecba | 555 | ext4fs_sb_free_inodes_inc(fs->sb); |
293d7fbd SG |
556 | /* journal backup */ |
557 | memset(journal_buffer, '\0', fs->blksz); | |
688d0e79 | 558 | status = ext4fs_devread(ext4fs_bg_get_inode_id(bgd, fs) * |
293d7fbd SG |
559 | fs->sect_perblk, 0, fs->blksz, journal_buffer); |
560 | if (status == 0) | |
561 | goto fail; | |
688d0e79 | 562 | if (ext4fs_log_journal(journal_buffer, ext4fs_bg_get_inode_id(bgd, fs))) |
293d7fbd SG |
563 | goto fail; |
564 | ||
565 | ext4fs_update(); | |
566 | ext4fs_deinit(); | |
8b454eee | 567 | ext4fs_reinit_global(); |
293d7fbd SG |
568 | |
569 | if (ext4fs_init() != 0) { | |
570 | printf("error in File System init\n"); | |
571 | goto fail; | |
572 | } | |
573 | ||
574 | free(start_block_address); | |
575 | free(journal_buffer); | |
576 | ||
577 | return 0; | |
578 | fail: | |
579 | free(start_block_address); | |
580 | free(journal_buffer); | |
581 | ||
582 | return -1; | |
583 | } | |
584 | ||
585 | int ext4fs_init(void) | |
586 | { | |
587 | short status; | |
588 | int i; | |
58a9ecba | 589 | uint32_t real_free_blocks = 0; |
293d7fbd SG |
590 | struct ext_filesystem *fs = get_fs(); |
591 | ||
592 | /* populate fs */ | |
593 | fs->blksz = EXT2_BLOCK_SIZE(ext4fs_root); | |
50ce4c07 | 594 | fs->sect_perblk = fs->blksz >> fs->dev_desc->log2blksz; |
293d7fbd SG |
595 | |
596 | /* get the superblock */ | |
597 | fs->sb = zalloc(SUPERBLOCK_SIZE); | |
598 | if (!fs->sb) | |
599 | return -ENOMEM; | |
50ce4c07 | 600 | if (!ext4_read_superblock((char *)fs->sb)) |
293d7fbd SG |
601 | goto fail; |
602 | ||
603 | /* init journal */ | |
604 | if (ext4fs_init_journal()) | |
605 | goto fail; | |
606 | ||
607 | /* get total no of blockgroups */ | |
608 | fs->no_blkgrp = (uint32_t)ext4fs_div_roundup( | |
58a9ecba MW |
609 | le32_to_cpu(ext4fs_root->sblock.total_blocks) |
610 | - le32_to_cpu(ext4fs_root->sblock.first_data_block), | |
611 | le32_to_cpu(ext4fs_root->sblock.blocks_per_group)); | |
293d7fbd SG |
612 | |
613 | /* get the block group descriptor table */ | |
614 | fs->gdtable_blkno = ((EXT2_MIN_BLOCK_SIZE == fs->blksz) + 1); | |
615 | if (ext4fs_get_bgdtable() == -1) { | |
616 | printf("Error in getting the block group descriptor table\n"); | |
617 | goto fail; | |
618 | } | |
293d7fbd SG |
619 | |
620 | /* load all the available bitmap block of the partition */ | |
621 | fs->blk_bmaps = zalloc(fs->no_blkgrp * sizeof(char *)); | |
622 | if (!fs->blk_bmaps) | |
623 | goto fail; | |
624 | for (i = 0; i < fs->no_blkgrp; i++) { | |
625 | fs->blk_bmaps[i] = zalloc(fs->blksz); | |
626 | if (!fs->blk_bmaps[i]) | |
627 | goto fail; | |
628 | } | |
629 | ||
630 | for (i = 0; i < fs->no_blkgrp; i++) { | |
688d0e79 SB |
631 | struct ext2_block_group *bgd = |
632 | ext4fs_get_group_descriptor(fs, i); | |
633 | status = ext4fs_devread(ext4fs_bg_get_block_id(bgd, fs) * | |
04735e9c | 634 | fs->sect_perblk, 0, |
293d7fbd SG |
635 | fs->blksz, (char *)fs->blk_bmaps[i]); |
636 | if (status == 0) | |
637 | goto fail; | |
638 | } | |
639 | ||
640 | /* load all the available inode bitmap of the partition */ | |
641 | fs->inode_bmaps = zalloc(fs->no_blkgrp * sizeof(unsigned char *)); | |
642 | if (!fs->inode_bmaps) | |
643 | goto fail; | |
644 | for (i = 0; i < fs->no_blkgrp; i++) { | |
645 | fs->inode_bmaps[i] = zalloc(fs->blksz); | |
646 | if (!fs->inode_bmaps[i]) | |
647 | goto fail; | |
648 | } | |
649 | ||
650 | for (i = 0; i < fs->no_blkgrp; i++) { | |
688d0e79 SB |
651 | struct ext2_block_group *bgd = |
652 | ext4fs_get_group_descriptor(fs, i); | |
653 | status = ext4fs_devread(ext4fs_bg_get_inode_id(bgd, fs) * | |
04735e9c | 654 | fs->sect_perblk, |
293d7fbd SG |
655 | 0, fs->blksz, |
656 | (char *)fs->inode_bmaps[i]); | |
657 | if (status == 0) | |
658 | goto fail; | |
659 | } | |
660 | ||
661 | /* | |
662 | * check filesystem consistency with free blocks of file system | |
663 | * some time we observed that superblock freeblocks does not match | |
664 | * with the blockgroups freeblocks when improper | |
665 | * reboot of a linux kernel | |
666 | */ | |
688d0e79 SB |
667 | for (i = 0; i < fs->no_blkgrp; i++) { |
668 | struct ext2_block_group *bgd = | |
669 | ext4fs_get_group_descriptor(fs, i); | |
670 | real_free_blocks = real_free_blocks + | |
671 | ext4fs_bg_get_free_blocks(bgd, fs); | |
672 | } | |
673 | if (real_free_blocks != ext4fs_sb_get_free_blocks(fs->sb)) | |
674 | ext4fs_sb_set_free_blocks(fs->sb, real_free_blocks); | |
293d7fbd SG |
675 | |
676 | return 0; | |
677 | fail: | |
678 | ext4fs_deinit(); | |
679 | ||
680 | return -1; | |
681 | } | |
682 | ||
683 | void ext4fs_deinit(void) | |
684 | { | |
685 | int i; | |
686 | struct ext2_inode inode_journal; | |
687 | struct journal_superblock_t *jsb; | |
58a9ecba | 688 | uint32_t blknr; |
293d7fbd | 689 | struct ext_filesystem *fs = get_fs(); |
58a9ecba | 690 | uint32_t new_feature_incompat; |
293d7fbd SG |
691 | |
692 | /* free journal */ | |
693 | char *temp_buff = zalloc(fs->blksz); | |
694 | if (temp_buff) { | |
695 | ext4fs_read_inode(ext4fs_root, EXT2_JOURNAL_INO, | |
696 | &inode_journal); | |
697 | blknr = read_allocated_block(&inode_journal, | |
698 | EXT2_JOURNAL_SUPERBLOCK); | |
04735e9c | 699 | ext4fs_devread((lbaint_t)blknr * fs->sect_perblk, 0, fs->blksz, |
293d7fbd SG |
700 | temp_buff); |
701 | jsb = (struct journal_superblock_t *)temp_buff; | |
58a9ecba | 702 | jsb->s_start = 0; |
0550870b | 703 | put_ext4((uint64_t) ((uint64_t)blknr * (uint64_t)fs->blksz), |
293d7fbd SG |
704 | (struct journal_superblock_t *)temp_buff, fs->blksz); |
705 | free(temp_buff); | |
706 | } | |
707 | ext4fs_free_journal(); | |
708 | ||
709 | /* get the superblock */ | |
50ce4c07 | 710 | ext4_read_superblock((char *)fs->sb); |
58a9ecba MW |
711 | new_feature_incompat = le32_to_cpu(fs->sb->feature_incompat); |
712 | new_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; | |
713 | fs->sb->feature_incompat = cpu_to_le32(new_feature_incompat); | |
293d7fbd SG |
714 | put_ext4((uint64_t)(SUPERBLOCK_SIZE), |
715 | (struct ext2_sblock *)fs->sb, (uint32_t)SUPERBLOCK_SIZE); | |
716 | free(fs->sb); | |
717 | fs->sb = NULL; | |
718 | ||
719 | if (fs->blk_bmaps) { | |
720 | for (i = 0; i < fs->no_blkgrp; i++) { | |
721 | free(fs->blk_bmaps[i]); | |
722 | fs->blk_bmaps[i] = NULL; | |
723 | } | |
724 | free(fs->blk_bmaps); | |
725 | fs->blk_bmaps = NULL; | |
726 | } | |
727 | ||
728 | if (fs->inode_bmaps) { | |
729 | for (i = 0; i < fs->no_blkgrp; i++) { | |
730 | free(fs->inode_bmaps[i]); | |
731 | fs->inode_bmaps[i] = NULL; | |
732 | } | |
733 | free(fs->inode_bmaps); | |
734 | fs->inode_bmaps = NULL; | |
735 | } | |
736 | ||
737 | ||
738 | free(fs->gdtable); | |
739 | fs->gdtable = NULL; | |
293d7fbd SG |
740 | /* |
741 | * reinitiliazed the global inode and | |
742 | * block bitmap first execution check variables | |
743 | */ | |
744 | fs->first_pass_ibmap = 0; | |
745 | fs->first_pass_bbmap = 0; | |
746 | fs->curr_inode_no = 0; | |
747 | fs->curr_blkno = 0; | |
748 | } | |
749 | ||
de9e8316 SB |
750 | /* |
751 | * Write data to filesystem blocks. Uses same optimization for | |
752 | * contigous sectors as ext4fs_read_file | |
753 | */ | |
293d7fbd SG |
754 | static int ext4fs_write_file(struct ext2_inode *file_inode, |
755 | int pos, unsigned int len, char *buf) | |
756 | { | |
757 | int i; | |
758 | int blockcnt; | |
58a9ecba | 759 | uint32_t filesize = le32_to_cpu(file_inode->size); |
293d7fbd | 760 | struct ext_filesystem *fs = get_fs(); |
50ce4c07 EE |
761 | int log2blksz = fs->dev_desc->log2blksz; |
762 | int log2_fs_blocksize = LOG2_BLOCK_SIZE(ext4fs_root) - log2blksz; | |
293d7fbd SG |
763 | int previous_block_number = -1; |
764 | int delayed_start = 0; | |
765 | int delayed_extent = 0; | |
766 | int delayed_next = 0; | |
767 | char *delayed_buf = NULL; | |
768 | ||
769 | /* Adjust len so it we can't read past the end of the file. */ | |
770 | if (len > filesize) | |
771 | len = filesize; | |
772 | ||
773 | blockcnt = ((len + pos) + fs->blksz - 1) / fs->blksz; | |
774 | ||
775 | for (i = pos / fs->blksz; i < blockcnt; i++) { | |
776 | long int blknr; | |
777 | int blockend = fs->blksz; | |
778 | int skipfirst = 0; | |
779 | blknr = read_allocated_block(file_inode, i); | |
de9e8316 | 780 | if (blknr <= 0) |
293d7fbd SG |
781 | return -1; |
782 | ||
50ce4c07 | 783 | blknr = blknr << log2_fs_blocksize; |
293d7fbd SG |
784 | |
785 | if (blknr) { | |
786 | if (previous_block_number != -1) { | |
787 | if (delayed_next == blknr) { | |
788 | delayed_extent += blockend; | |
50ce4c07 | 789 | delayed_next += blockend >> log2blksz; |
293d7fbd | 790 | } else { /* spill */ |
50ce4c07 | 791 | put_ext4((uint64_t) |
0550870b | 792 | ((uint64_t)delayed_start << log2blksz), |
293d7fbd SG |
793 | delayed_buf, |
794 | (uint32_t) delayed_extent); | |
795 | previous_block_number = blknr; | |
796 | delayed_start = blknr; | |
797 | delayed_extent = blockend; | |
798 | delayed_buf = buf; | |
799 | delayed_next = blknr + | |
50ce4c07 | 800 | (blockend >> log2blksz); |
293d7fbd SG |
801 | } |
802 | } else { | |
803 | previous_block_number = blknr; | |
804 | delayed_start = blknr; | |
805 | delayed_extent = blockend; | |
806 | delayed_buf = buf; | |
807 | delayed_next = blknr + | |
50ce4c07 | 808 | (blockend >> log2blksz); |
293d7fbd SG |
809 | } |
810 | } else { | |
811 | if (previous_block_number != -1) { | |
812 | /* spill */ | |
0550870b | 813 | put_ext4((uint64_t) ((uint64_t)delayed_start << |
50ce4c07 EE |
814 | log2blksz), |
815 | delayed_buf, | |
293d7fbd SG |
816 | (uint32_t) delayed_extent); |
817 | previous_block_number = -1; | |
818 | } | |
819 | memset(buf, 0, fs->blksz - skipfirst); | |
820 | } | |
821 | buf += fs->blksz - skipfirst; | |
822 | } | |
823 | if (previous_block_number != -1) { | |
824 | /* spill */ | |
0550870b | 825 | put_ext4((uint64_t) ((uint64_t)delayed_start << log2blksz), |
293d7fbd SG |
826 | delayed_buf, (uint32_t) delayed_extent); |
827 | previous_block_number = -1; | |
828 | } | |
829 | ||
830 | return len; | |
831 | } | |
832 | ||
833 | int ext4fs_write(const char *fname, unsigned char *buffer, | |
834 | unsigned long sizebytes) | |
835 | { | |
836 | int ret = 0; | |
837 | struct ext2_inode *file_inode = NULL; | |
838 | unsigned char *inode_buffer = NULL; | |
839 | int parent_inodeno; | |
840 | int inodeno; | |
841 | time_t timestamp = 0; | |
842 | ||
843 | uint64_t bytes_reqd_for_file; | |
844 | unsigned int blks_reqd_for_file; | |
845 | unsigned int blocks_remaining; | |
846 | int existing_file_inodeno; | |
847 | char *temp_ptr = NULL; | |
848 | long int itable_blkno; | |
849 | long int parent_itable_blkno; | |
850 | long int blkoff; | |
851 | struct ext2_sblock *sblock = &(ext4fs_root->sblock); | |
852 | unsigned int inodes_per_block; | |
853 | unsigned int ibmap_idx; | |
688d0e79 | 854 | struct ext2_block_group *bgd = NULL; |
293d7fbd SG |
855 | struct ext_filesystem *fs = get_fs(); |
856 | ALLOC_CACHE_ALIGN_BUFFER(char, filename, 256); | |
46a5707d | 857 | memset(filename, 0x00, 256); |
293d7fbd | 858 | |
87f9fdc0 | 859 | g_parent_inode = zalloc(fs->inodesz); |
293d7fbd SG |
860 | if (!g_parent_inode) |
861 | goto fail; | |
862 | ||
863 | if (ext4fs_init() != 0) { | |
864 | printf("error in File System init\n"); | |
865 | return -1; | |
866 | } | |
867 | inodes_per_block = fs->blksz / fs->inodesz; | |
868 | parent_inodeno = ext4fs_get_parent_inode_num(fname, filename, F_FILE); | |
869 | if (parent_inodeno == -1) | |
870 | goto fail; | |
871 | if (ext4fs_iget(parent_inodeno, g_parent_inode)) | |
872 | goto fail; | |
10a7a1b8 SB |
873 | /* do not mess up a directory using hash trees */ |
874 | if (le32_to_cpu(g_parent_inode->flags) & EXT4_INDEX_FL) { | |
875 | printf("hash tree directory\n"); | |
876 | goto fail; | |
877 | } | |
293d7fbd | 878 | /* check if the filename is already present in root */ |
76a29519 | 879 | existing_file_inodeno = ext4fs_filename_unlink(filename); |
293d7fbd SG |
880 | if (existing_file_inodeno != -1) { |
881 | ret = ext4fs_delete_file(existing_file_inodeno); | |
882 | fs->first_pass_bbmap = 0; | |
883 | fs->curr_blkno = 0; | |
884 | ||
885 | fs->first_pass_ibmap = 0; | |
886 | fs->curr_inode_no = 0; | |
887 | if (ret) | |
888 | goto fail; | |
889 | } | |
890 | /* calucalate how many blocks required */ | |
891 | bytes_reqd_for_file = sizebytes; | |
892 | blks_reqd_for_file = lldiv(bytes_reqd_for_file, fs->blksz); | |
893 | if (do_div(bytes_reqd_for_file, fs->blksz) != 0) { | |
894 | blks_reqd_for_file++; | |
895 | debug("total bytes for a file %u\n", blks_reqd_for_file); | |
896 | } | |
897 | blocks_remaining = blks_reqd_for_file; | |
898 | /* test for available space in partition */ | |
58a9ecba | 899 | if (le32_to_cpu(fs->sb->free_blocks) < blks_reqd_for_file) { |
293d7fbd SG |
900 | printf("Not enough space on partition !!!\n"); |
901 | goto fail; | |
902 | } | |
903 | ||
a0d767e2 SB |
904 | inodeno = ext4fs_update_parent_dentry(filename, FILETYPE_REG); |
905 | if (inodeno == -1) | |
906 | goto fail; | |
293d7fbd SG |
907 | /* prepare file inode */ |
908 | inode_buffer = zalloc(fs->inodesz); | |
909 | if (!inode_buffer) | |
910 | goto fail; | |
911 | file_inode = (struct ext2_inode *)inode_buffer; | |
58a9ecba MW |
912 | file_inode->mode = cpu_to_le16(S_IFREG | S_IRWXU | |
913 | S_IRGRP | S_IROTH | S_IXGRP | S_IXOTH); | |
293d7fbd | 914 | /* ToDo: Update correct time */ |
58a9ecba MW |
915 | file_inode->mtime = cpu_to_le32(timestamp); |
916 | file_inode->atime = cpu_to_le32(timestamp); | |
917 | file_inode->ctime = cpu_to_le32(timestamp); | |
918 | file_inode->nlinks = cpu_to_le16(1); | |
919 | file_inode->size = cpu_to_le32(sizebytes); | |
293d7fbd SG |
920 | |
921 | /* Allocate data blocks */ | |
922 | ext4fs_allocate_blocks(file_inode, blocks_remaining, | |
923 | &blks_reqd_for_file); | |
58a9ecba MW |
924 | file_inode->blockcnt = cpu_to_le32((blks_reqd_for_file * fs->blksz) >> |
925 | fs->dev_desc->log2blksz); | |
293d7fbd SG |
926 | |
927 | temp_ptr = zalloc(fs->blksz); | |
928 | if (!temp_ptr) | |
929 | goto fail; | |
58a9ecba | 930 | ibmap_idx = inodeno / le32_to_cpu(ext4fs_root->sblock.inodes_per_group); |
293d7fbd | 931 | inodeno--; |
688d0e79 SB |
932 | bgd = ext4fs_get_group_descriptor(fs, ibmap_idx); |
933 | itable_blkno = ext4fs_bg_get_inode_table_id(bgd, fs) + | |
7f101be3 | 934 | (inodeno % le32_to_cpu(sblock->inodes_per_group)) / |
293d7fbd SG |
935 | inodes_per_block; |
936 | blkoff = (inodeno % inodes_per_block) * fs->inodesz; | |
04735e9c FL |
937 | ext4fs_devread((lbaint_t)itable_blkno * fs->sect_perblk, 0, fs->blksz, |
938 | temp_ptr); | |
293d7fbd SG |
939 | if (ext4fs_log_journal(temp_ptr, itable_blkno)) |
940 | goto fail; | |
941 | ||
942 | memcpy(temp_ptr + blkoff, inode_buffer, fs->inodesz); | |
943 | if (ext4fs_put_metadata(temp_ptr, itable_blkno)) | |
944 | goto fail; | |
945 | /* copy the file content into data blocks */ | |
946 | if (ext4fs_write_file(file_inode, 0, sizebytes, (char *)buffer) == -1) { | |
947 | printf("Error in copying content\n"); | |
de9e8316 | 948 | /* FIXME: Deallocate data blocks */ |
293d7fbd SG |
949 | goto fail; |
950 | } | |
58a9ecba | 951 | ibmap_idx = parent_inodeno / le32_to_cpu(ext4fs_root->sblock.inodes_per_group); |
293d7fbd | 952 | parent_inodeno--; |
688d0e79 SB |
953 | bgd = ext4fs_get_group_descriptor(fs, ibmap_idx); |
954 | parent_itable_blkno = ext4fs_bg_get_inode_table_id(bgd, fs) + | |
293d7fbd | 955 | (parent_inodeno % |
7f101be3 | 956 | le32_to_cpu(sblock->inodes_per_group)) / inodes_per_block; |
293d7fbd SG |
957 | blkoff = (parent_inodeno % inodes_per_block) * fs->inodesz; |
958 | if (parent_itable_blkno != itable_blkno) { | |
959 | memset(temp_ptr, '\0', fs->blksz); | |
04735e9c | 960 | ext4fs_devread((lbaint_t)parent_itable_blkno * fs->sect_perblk, |
293d7fbd SG |
961 | 0, fs->blksz, temp_ptr); |
962 | if (ext4fs_log_journal(temp_ptr, parent_itable_blkno)) | |
963 | goto fail; | |
964 | ||
87f9fdc0 | 965 | memcpy(temp_ptr + blkoff, g_parent_inode, fs->inodesz); |
293d7fbd SG |
966 | if (ext4fs_put_metadata(temp_ptr, parent_itable_blkno)) |
967 | goto fail; | |
293d7fbd SG |
968 | } else { |
969 | /* | |
970 | * If parent and child fall in same inode table block | |
971 | * both should be kept in 1 buffer | |
972 | */ | |
87f9fdc0 | 973 | memcpy(temp_ptr + blkoff, g_parent_inode, fs->inodesz); |
293d7fbd SG |
974 | gd_index--; |
975 | if (ext4fs_put_metadata(temp_ptr, itable_blkno)) | |
976 | goto fail; | |
293d7fbd SG |
977 | } |
978 | ext4fs_update(); | |
979 | ext4fs_deinit(); | |
980 | ||
981 | fs->first_pass_bbmap = 0; | |
982 | fs->curr_blkno = 0; | |
983 | fs->first_pass_ibmap = 0; | |
984 | fs->curr_inode_no = 0; | |
985 | free(inode_buffer); | |
986 | free(g_parent_inode); | |
87a40b6e | 987 | free(temp_ptr); |
293d7fbd SG |
988 | g_parent_inode = NULL; |
989 | ||
990 | return 0; | |
991 | fail: | |
992 | ext4fs_deinit(); | |
993 | free(inode_buffer); | |
994 | free(g_parent_inode); | |
87a40b6e | 995 | free(temp_ptr); |
293d7fbd SG |
996 | g_parent_inode = NULL; |
997 | ||
998 | return -1; | |
999 | } | |
9f12cd0e SR |
1000 | |
1001 | int ext4_write_file(const char *filename, void *buf, loff_t offset, | |
1002 | loff_t len, loff_t *actwrite) | |
1003 | { | |
1004 | int ret; | |
1005 | ||
1006 | if (offset != 0) { | |
1007 | printf("** Cannot support non-zero offset **\n"); | |
1008 | return -1; | |
1009 | } | |
1010 | ||
9f12cd0e | 1011 | ret = ext4fs_write(filename, buf, len); |
9f12cd0e SR |
1012 | if (ret) { |
1013 | printf("** Error ext4fs_write() **\n"); | |
1014 | goto fail; | |
1015 | } | |
9f12cd0e | 1016 | |
22b7509e PM |
1017 | *actwrite = len; |
1018 | ||
9f12cd0e SR |
1019 | return 0; |
1020 | ||
1021 | fail: | |
22b7509e | 1022 | *actwrite = 0; |
9f12cd0e SR |
1023 | |
1024 | return -1; | |
1025 | } |