2 * extent_inode.c --- direct extent tree manipulation
4 * Copyright (C) 2012 Theodore Ts'o. This file may be redistributed
5 * under the terms of the GNU Public License.
18 #include <sys/types.h>
28 ext2_ino_t current_ino;
29 ext2_extent_handle_t current_handle;
31 static void dbg_print_extent(char *desc, struct ext2fs_extent *extent)
35 printf("extent: lblk %llu--%llu, len %u, pblk %llu, flags: ",
36 extent->e_lblk, extent->e_lblk + extent->e_len - 1,
37 extent->e_len, extent->e_pblk);
38 if (extent->e_flags & EXT2_EXTENT_FLAGS_LEAF)
39 fputs("LEAF ", stdout);
40 if (extent->e_flags & EXT2_EXTENT_FLAGS_UNINIT)
41 fputs("UNINIT ", stdout);
42 if (extent->e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
43 fputs("2ND_VISIT ", stdout);
45 fputs("(none)", stdout);
50 int common_extent_args_process(int argc, char *argv[], int min_argc,
51 int max_argc, const char *cmd,
52 const char *usage, int flags)
54 if (common_args_process(argc, argv, min_argc, max_argc, cmd,
58 if (!current_handle) {
59 com_err(cmd, 0, "Extent handle not open");
65 static char *orig_prompt, *extent_prompt;
67 void do_extent_open(int argc, char *argv[])
69 struct ext3_extent_header *eh;
75 if (check_fs_open(argv[0]))
80 printf("Current inode is %d\n", current_ino);
82 printf("No current inode\n");
86 if (common_inode_args_process(argc, argv, &inode, 0))
91 retval = ext2fs_extent_open(current_fs, inode, ¤t_handle);
93 com_err(argv[1], retval, "while opening extent handle");
99 orig_prompt = ss_get_prompt(sci_idx);
100 extent_prompt = malloc(strlen(orig_prompt) + 32);
101 strcpy(extent_prompt, orig_prompt);
102 cp = strchr(extent_prompt, ':');
105 sprintf(extent_prompt + strlen(extent_prompt), " (extent ino %d): ",
107 ss_add_request_table(sci_idx, &extent_cmds, 1, &ret);
108 ss_set_prompt(sci_idx, extent_prompt);
112 void do_extent_close(int argc, char *argv[])
116 if (check_fs_open(argv[0]))
119 if (!current_handle) {
120 com_err(argv[0], 0, "Extent handle not open");
124 ext2fs_extent_free(current_handle);
125 current_handle = NULL;
127 ss_delete_request_table(sci_idx, &extent_cmds, &ret);
128 ss_set_prompt(sci_idx, orig_prompt);
130 extent_prompt = NULL;
133 void generic_goto_node(char *cmd_name, int op)
135 struct ext2fs_extent extent;
138 if (check_fs_open(cmd_name))
141 if (!current_handle) {
142 com_err(cmd_name, 0, "Extent handle not open");
146 retval = ext2fs_extent_get(current_handle, op, &extent);
148 com_err(cmd_name, retval, 0);
151 dbg_print_extent(0, &extent);
154 void do_current_node(int argc, char *argv[])
156 generic_goto_node(argv[0], EXT2_EXTENT_CURRENT);
159 void do_root_node(int argc, char *argv[])
161 generic_goto_node(argv[0], EXT2_EXTENT_ROOT);
164 void do_last_leaf(int argc, char *argv[])
166 generic_goto_node(argv[0], EXT2_EXTENT_LAST_LEAF);
169 void do_first_sib(int argc, char *argv[])
171 generic_goto_node(argv[0], EXT2_EXTENT_FIRST_SIB);
174 void do_last_sib(int argc, char *argv[])
176 generic_goto_node(argv[0], EXT2_EXTENT_LAST_SIB);
179 void do_next_sib(int argc, char *argv[])
181 generic_goto_node(argv[0], EXT2_EXTENT_NEXT_SIB);
184 void do_prev_sib(int argc, char *argv[])
186 generic_goto_node(argv[0], EXT2_EXTENT_PREV_SIB);
189 void do_next_leaf(int argc, char *argv[])
191 generic_goto_node(argv[0], EXT2_EXTENT_NEXT_LEAF);
194 void do_prev_leaf(int argc, char *argv[])
196 generic_goto_node(argv[0], EXT2_EXTENT_PREV_LEAF);
199 void do_next(int argc, char *argv[])
201 generic_goto_node(argv[0], EXT2_EXTENT_NEXT);
204 void do_prev(int argc, char *argv[])
206 generic_goto_node(argv[0], EXT2_EXTENT_PREV);
209 void do_up(int argc, char *argv[])
211 generic_goto_node(argv[0], EXT2_EXTENT_UP);
214 void do_down(int argc, char *argv[])
216 generic_goto_node(argv[0], EXT2_EXTENT_DOWN);
219 void do_delete_node(int argc, char *argv[])
221 struct ext2fs_extent extent;
225 if (common_extent_args_process(argc, argv, 1, 1, "delete_node",
226 "", CHECK_FS_RW | CHECK_FS_BITMAPS))
229 retval = ext2fs_extent_delete(current_handle, 0);
231 com_err(argv[0], retval, 0);
235 retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
239 dbg_print_extent(0, &extent);
242 void do_replace_node(int argc, char *argv[])
244 const char *usage = "[--uninit] <lblk> <len> <pblk>";
246 struct ext2fs_extent extent;
249 if (common_extent_args_process(argc, argv, 3, 5, "replace_node",
250 usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
255 if (!strcmp(argv[1], "--uninit")) {
258 extent.e_flags |= EXT2_EXTENT_FLAGS_UNINIT;
262 fprintf(stderr, "Usage: %s %s\n", argv[0], usage);
266 extent.e_lblk = parse_ulong(argv[1], argv[0], "logical block", &err);
270 extent.e_len = parse_ulong(argv[2], argv[0], "logical block", &err);
274 extent.e_pblk = parse_ulong(argv[3], argv[0], "logical block", &err);
278 retval = ext2fs_extent_replace(current_handle, 0, &extent);
280 com_err(argv[0], retval, 0);
283 do_current_node(argc, argv);
286 void do_split_node(int argc, char *argv[])
289 struct ext2fs_extent extent;
292 if (common_extent_args_process(argc, argv, 1, 1, "split_node",
293 "", CHECK_FS_RW | CHECK_FS_BITMAPS))
296 retval = ext2fs_extent_node_split(current_handle);
298 com_err(argv[0], retval, 0);
301 do_current_node(argc, argv);
304 void do_insert_node(int argc, char *argv[])
306 const char *usage = "[--after] [--uninit] <lblk> <len> <pblk>";
308 struct ext2fs_extent extent;
313 if (common_extent_args_process(argc, argv, 3, 6, "insert_node",
314 usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
322 if (!strcmp(argv[1], "--after")) {
325 flags |= EXT2_EXTENT_INSERT_AFTER;
328 if (!strcmp(argv[1], "--uninit")) {
331 extent.e_flags |= EXT2_EXTENT_FLAGS_UNINIT;
338 fprintf(stderr, "usage: %s %s\n", cmd, usage);
342 extent.e_lblk = parse_ulong(argv[1], cmd,
343 "logical block", &err);
347 extent.e_len = parse_ulong(argv[2], cmd,
352 extent.e_pblk = parse_ulong(argv[3], cmd,
353 "pysical block", &err);
357 retval = ext2fs_extent_insert(current_handle, flags, &extent);
359 com_err(cmd, retval, 0);
362 do_current_node(argc, argv);
365 void do_set_bmap(int argc, char **argv)
367 const char *usage = "[--uninit] <lblk> <pblk>";
368 struct ext2fs_extent extent;
376 if (common_extent_args_process(argc, argv, 3, 5, "set_bmap",
377 usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
380 if (argc > 2 && !strcmp(argv[1], "--uninit")) {
383 flags |= EXT2_EXTENT_SET_BMAP_UNINIT;
387 fprintf(stderr, "Usage: %s %s\n", cmd, usage);
391 logical = parse_ulong(argv[1], cmd,
392 "logical block", &err);
396 physical = parse_ulong(argv[2], cmd,
397 "physical block", &err);
401 retval = ext2fs_extent_set_bmap(current_handle, logical,
402 (blk64_t) physical, flags);
404 com_err(cmd, retval, 0);
408 retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
412 dbg_print_extent(0, &extent);
415 void do_print_all(int argc, char **argv)
417 const char *usage = "[--leaf-only|--reverse|--reverse-leaf]";
418 struct ext2fs_extent extent;
420 errcode_t end_err = EXT2_ET_EXTENT_NO_NEXT;
421 int op = EXT2_EXTENT_NEXT;
422 int first_op = EXT2_EXTENT_ROOT;
425 if (common_extent_args_process(argc, argv, 1, 2, "print_all",
430 if (!strcmp(argv[1], "--leaf-only"))
431 op = EXT2_EXTENT_NEXT_LEAF;
432 else if (!strcmp(argv[1], "--reverse")) {
433 op = EXT2_EXTENT_PREV;
434 first_op = EXT2_EXTENT_LAST_LEAF;
435 end_err = EXT2_ET_EXTENT_NO_PREV;
436 } else if (!strcmp(argv[1], "--reverse-leaf")) {
437 op = EXT2_EXTENT_PREV_LEAF;
438 first_op = EXT2_EXTENT_LAST_LEAF;
439 end_err = EXT2_ET_EXTENT_NO_PREV;
441 fprintf(stderr, "Usage: %s %s\n", argv[0], usage);
446 retval = ext2fs_extent_get(current_handle, first_op, &extent);
448 com_err(argv[0], retval, 0);
451 dbg_print_extent(0, &extent);
454 retval = ext2fs_extent_get(current_handle, op, &extent);
455 if (retval == end_err)
459 com_err(argv[0], retval, 0);
462 dbg_print_extent(0, &extent);
466 void do_fix_parents(int argc, char **argv)
468 struct ext2fs_extent extent;
469 struct ext2_extent_info info;
472 if (common_extent_args_process(argc, argv, 1, 1, "fix_parents", "",
476 retval = ext2fs_extent_fix_parents(current_handle);
478 com_err(argv[0], retval, 0);
483 void do_info(int argc, char **argv)
485 struct ext2fs_extent extent;
486 struct ext2_extent_info info;
489 if (common_extent_args_process(argc, argv, 1, 1, "info", "", 0))
492 retval = ext2fs_extent_get_info(current_handle, &info);
494 com_err(argv[0], retval, 0);
498 retval = ext2fs_extent_get(current_handle,
499 EXT2_EXTENT_CURRENT, &extent);
501 com_err(argv[0], retval, 0);
505 dbg_print_extent(0, &extent);
507 printf("Current handle location: %d/%d (max: %d, bytes %d), level %d/%d\n",
508 info.curr_entry, info.num_entries, info.max_entries,
509 info.bytes_avail, info.curr_level, info.max_depth);
510 printf("\tmax lblk: %llu, max pblk: %llu\n", info.max_lblk,
512 printf("\tmax_len: %u, max_uninit_len: %u\n", info.max_len,
513 info.max_uninit_len);
516 void do_goto_block(int argc, char **argv)
518 struct ext2fs_extent extent;
520 int op = EXT2_EXTENT_NEXT_LEAF;
524 if (common_extent_args_process(argc, argv, 2, 3, "goto_block",
528 if (strtoblk(argv[0], argv[1], &blk))
532 level = parse_ulong(argv[2], argv[0], "level", &err);
537 retval = ext2fs_extent_goto2(current_handle, level, (blk64_t) blk);
540 com_err(argv[0], retval,
541 "while trying to go to block %llu, level %d",
542 (unsigned long long) blk, level);
546 generic_goto_node(argv[0], EXT2_EXTENT_CURRENT);