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 static ext2_ino_t current_ino;
29 static 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 (unsigned long long) extent->e_lblk,
37 (unsigned long long) extent->e_lblk + extent->e_len - 1,
38 extent->e_len, (unsigned long long) extent->e_pblk);
39 if (extent->e_flags & EXT2_EXTENT_FLAGS_LEAF)
40 fputs("LEAF ", stdout);
41 if (extent->e_flags & EXT2_EXTENT_FLAGS_UNINIT)
42 fputs("UNINIT ", stdout);
43 if (extent->e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
44 fputs("2ND_VISIT ", stdout);
46 fputs("(none)", stdout);
51 static int common_extent_args_process(int argc, char *argv[], int min_argc,
52 int max_argc, const char *cmd,
53 const char *usage, int flags)
55 if (common_args_process(argc, argv, min_argc, max_argc, cmd,
59 if (!current_handle) {
60 com_err(cmd, 0, "Extent handle not open");
66 static char *orig_prompt, *extent_prompt;
68 void do_extent_open(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
69 void *infop EXT2FS_ATTR((unused)))
76 if (check_fs_open(argv[0]))
81 printf("Current inode is %u\n", current_ino);
83 printf("No current inode\n");
87 if (common_inode_args_process(argc, argv, &inode, 0))
92 retval = ext2fs_extent_open(current_fs, inode, ¤t_handle);
94 com_err(argv[1], retval, "while opening extent handle");
100 orig_prompt = ss_get_prompt(sci_idx);
101 extent_prompt = malloc(strlen(orig_prompt) + 32);
102 if (extent_prompt == NULL) {
103 com_err(argv[1], retval, "out of memory");
107 strcpy(extent_prompt, orig_prompt);
108 cp = strchr(extent_prompt, ':');
111 sprintf(extent_prompt + strlen(extent_prompt), " (extent ino %u): ",
113 ss_add_request_table(sci_idx, &extent_cmds, 1, &ret);
114 ss_set_prompt(sci_idx, extent_prompt);
118 void do_extent_close(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
119 void *infop EXT2FS_ATTR((unused)))
123 if (common_args_process(argc, argv, 1, 1,
124 "extent_close", "", 0))
127 if (!current_handle) {
128 com_err(argv[0], 0, "Extent handle not open");
132 ext2fs_extent_free(current_handle);
133 current_handle = NULL;
135 ss_delete_request_table(sci_idx, &extent_cmds, &ret);
136 ss_set_prompt(sci_idx, orig_prompt);
138 extent_prompt = NULL;
141 static void generic_goto_node(const char *my_name, int argc,
144 struct ext2fs_extent extent;
147 if (my_name && common_args_process(argc, argv, 1, 1,
151 if (!current_handle) {
152 com_err(argv[0], 0, "Extent handle not open");
156 retval = ext2fs_extent_get(current_handle, op, &extent);
158 com_err(argv[0], retval, 0);
161 dbg_print_extent(0, &extent);
164 void do_current_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
165 void *infop EXT2FS_ATTR((unused)))
167 generic_goto_node("current_node", argc, argv, EXT2_EXTENT_CURRENT);
170 void do_root_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
171 void *infop EXT2FS_ATTR((unused)))
173 generic_goto_node("root_node", argc, argv, EXT2_EXTENT_ROOT);
176 void do_last_leaf(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
177 void *infop EXT2FS_ATTR((unused)))
179 generic_goto_node("last_leaf", argc, argv, EXT2_EXTENT_LAST_LEAF);
182 void do_first_sib(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
183 void *infop EXT2FS_ATTR((unused)))
185 generic_goto_node("first_sib", argc, argv, EXT2_EXTENT_FIRST_SIB);
188 void do_last_sib(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
189 void *infop EXT2FS_ATTR((unused)))
191 generic_goto_node("next_sib", argc, argv, EXT2_EXTENT_LAST_SIB);
194 void do_next_sib(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
195 void *infop EXT2FS_ATTR((unused)))
197 generic_goto_node("next_sib", argc, argv, EXT2_EXTENT_NEXT_SIB);
200 void do_prev_sib(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
201 void *infop EXT2FS_ATTR((unused)))
203 generic_goto_node("prev_sib", argc, argv, EXT2_EXTENT_PREV_SIB);
206 void do_next_leaf(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
207 void *infop EXT2FS_ATTR((unused)))
209 generic_goto_node("next_leaf", argc, argv, EXT2_EXTENT_NEXT_LEAF);
212 void do_prev_leaf(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
213 void *infop EXT2FS_ATTR((unused)))
215 generic_goto_node("prev_leaf", argc, argv, EXT2_EXTENT_PREV_LEAF);
218 void do_next(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
219 void *infop EXT2FS_ATTR((unused)))
221 generic_goto_node("next", argc, argv, EXT2_EXTENT_NEXT);
224 void do_prev(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
225 void *infop EXT2FS_ATTR((unused)))
227 generic_goto_node("prev", argc, argv, EXT2_EXTENT_PREV);
230 void do_up(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
231 void *infop EXT2FS_ATTR((unused)))
233 generic_goto_node("up", argc, argv, EXT2_EXTENT_UP);
236 void do_down(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
237 void *infop EXT2FS_ATTR((unused)))
239 generic_goto_node("down", argc, argv, EXT2_EXTENT_DOWN);
242 void do_delete_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
243 void *infop EXT2FS_ATTR((unused)))
245 struct ext2fs_extent extent;
248 if (common_extent_args_process(argc, argv, 1, 1, "delete_node",
249 "", CHECK_FS_RW | CHECK_FS_BITMAPS))
252 retval = ext2fs_extent_delete(current_handle, 0);
254 com_err(argv[0], retval, 0);
258 retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
262 dbg_print_extent(0, &extent);
265 void do_replace_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
266 void *infop EXT2FS_ATTR((unused)))
268 const char *usage = "[--uninit] <lblk> <len> <pblk>";
270 struct ext2fs_extent extent;
273 if (common_extent_args_process(argc, argv, 3, 5, "replace_node",
274 usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
279 if (!strcmp(argv[1], "--uninit")) {
282 extent.e_flags |= EXT2_EXTENT_FLAGS_UNINIT;
286 fprintf(stderr, "Usage: %s %s\n", argv[0], usage);
290 err = strtoblk(argv[0], argv[1], "logical block", &extent.e_lblk);
294 extent.e_len = parse_ulong(argv[2], argv[0], "length", &err);
298 err = strtoblk(argv[0], argv[3], "physical block", &extent.e_pblk);
302 retval = ext2fs_extent_replace(current_handle, 0, &extent);
304 com_err(argv[0], retval, 0);
307 generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
310 void do_split_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
311 void *infop EXT2FS_ATTR((unused)))
315 if (common_extent_args_process(argc, argv, 1, 1, "split_node",
316 "", CHECK_FS_RW | CHECK_FS_BITMAPS))
319 retval = ext2fs_extent_node_split(current_handle);
321 com_err(argv[0], retval, 0);
324 generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
327 void do_insert_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
328 void *infop EXT2FS_ATTR((unused)))
330 const char *usage = "[--after] [--uninit] <lblk> <len> <pblk>";
332 struct ext2fs_extent extent;
337 if (common_extent_args_process(argc, argv, 3, 6, "insert_node",
338 usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
346 if (!strcmp(argv[1], "--after")) {
349 flags |= EXT2_EXTENT_INSERT_AFTER;
352 if (!strcmp(argv[1], "--uninit")) {
355 extent.e_flags |= EXT2_EXTENT_FLAGS_UNINIT;
362 fprintf(stderr, "usage: %s %s\n", cmd, usage);
366 err = strtoblk(cmd, argv[1], "logical block", &extent.e_lblk);
370 extent.e_len = parse_ulong(argv[2], cmd, "length", &err);
374 err = strtoblk(cmd, argv[3], "physical block", &extent.e_pblk);
378 retval = ext2fs_extent_insert(current_handle, flags, &extent);
380 com_err(cmd, retval, 0);
383 generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
386 void do_set_bmap(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
387 void *infop EXT2FS_ATTR((unused)))
389 const char *usage = "[--uninit] <lblk> <pblk>";
390 struct ext2fs_extent extent;
398 if (common_extent_args_process(argc, argv, 3, 5, "set_bmap",
399 usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
402 if (argc > 2 && !strcmp(argv[1], "--uninit")) {
405 flags |= EXT2_EXTENT_SET_BMAP_UNINIT;
409 fprintf(stderr, "Usage: %s %s\n", cmd, usage);
413 err = strtoblk(cmd, argv[1], "logical block", &logical);
417 err = strtoblk(cmd, argv[2], "physical block", &physical);
421 retval = ext2fs_extent_set_bmap(current_handle, logical,
424 com_err(cmd, retval, 0);
428 retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
432 dbg_print_extent(0, &extent);
435 void do_print_all(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
436 void *infop EXT2FS_ATTR((unused)))
438 const char *usage = "[--leaf-only|--reverse|--reverse-leaf]";
439 struct ext2fs_extent extent;
441 errcode_t end_err = EXT2_ET_EXTENT_NO_NEXT;
442 int op = EXT2_EXTENT_NEXT;
443 int first_op = EXT2_EXTENT_ROOT;
446 if (common_extent_args_process(argc, argv, 1, 2, "print_all",
451 if (!strcmp(argv[1], "--leaf-only"))
452 op = EXT2_EXTENT_NEXT_LEAF;
453 else if (!strcmp(argv[1], "--reverse")) {
454 op = EXT2_EXTENT_PREV;
455 first_op = EXT2_EXTENT_LAST_LEAF;
456 end_err = EXT2_ET_EXTENT_NO_PREV;
457 } else if (!strcmp(argv[1], "--reverse-leaf")) {
458 op = EXT2_EXTENT_PREV_LEAF;
459 first_op = EXT2_EXTENT_LAST_LEAF;
460 end_err = EXT2_ET_EXTENT_NO_PREV;
462 fprintf(stderr, "Usage: %s %s\n", argv[0], usage);
467 retval = ext2fs_extent_get(current_handle, first_op, &extent);
469 com_err(argv[0], retval, 0);
472 dbg_print_extent(0, &extent);
475 retval = ext2fs_extent_get(current_handle, op, &extent);
476 if (retval == end_err)
480 com_err(argv[0], retval, 0);
483 dbg_print_extent(0, &extent);
487 void do_fix_parents(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
488 void *infop EXT2FS_ATTR((unused)))
492 if (common_extent_args_process(argc, argv, 1, 1, "fix_parents", "",
496 retval = ext2fs_extent_fix_parents(current_handle);
498 com_err(argv[0], retval, 0);
503 void do_info(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
504 void *infop EXT2FS_ATTR((unused)))
506 struct ext2fs_extent extent;
507 struct ext2_extent_info info;
510 if (common_extent_args_process(argc, argv, 1, 1, "info", "", 0))
513 retval = ext2fs_extent_get_info(current_handle, &info);
515 com_err(argv[0], retval, 0);
519 retval = ext2fs_extent_get(current_handle,
520 EXT2_EXTENT_CURRENT, &extent);
522 com_err(argv[0], retval, 0);
526 dbg_print_extent(0, &extent);
528 printf("Current handle location: %d/%d (max: %d, bytes %d), level %d/%d\n",
529 info.curr_entry, info.num_entries, info.max_entries,
530 info.bytes_avail, info.curr_level, info.max_depth);
531 printf("\tmax lblk: %llu, max pblk: %llu\n",
532 (unsigned long long) info.max_lblk,
533 (unsigned long long) info.max_pblk);
534 printf("\tmax_len: %u, max_uninit_len: %u\n", info.max_len,
535 info.max_uninit_len);
538 void do_goto_block(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
539 void *infop EXT2FS_ATTR((unused)))
545 if (common_extent_args_process(argc, argv, 2, 3, "goto_block",
549 if (strtoblk(argv[0], argv[1], NULL, &blk))
553 level = parse_ulong(argv[2], argv[0], "level", &err);
558 retval = ext2fs_extent_goto2(current_handle, level, (blk64_t) blk);
561 com_err(argv[0], retval,
562 "while trying to go to block %llu, level %d",
563 (unsigned long long) blk, level);
567 generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);