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.
17 #include <sys/types.h>
27 static ext2_ino_t current_ino;
28 static ext2_extent_handle_t current_handle;
30 static void dbg_print_extent(char *desc, struct ext2fs_extent *extent)
34 printf("extent: lblk %llu--%llu, len %u, pblk %llu, flags: ",
35 extent->e_lblk, extent->e_lblk + extent->e_len - 1,
36 extent->e_len, extent->e_pblk);
37 if (extent->e_flags & EXT2_EXTENT_FLAGS_LEAF)
38 fputs("LEAF ", stdout);
39 if (extent->e_flags & EXT2_EXTENT_FLAGS_UNINIT)
40 fputs("UNINIT ", stdout);
41 if (extent->e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
42 fputs("2ND_VISIT ", stdout);
44 fputs("(none)", stdout);
49 static int common_extent_args_process(int argc, char *argv[], int min_argc,
50 int max_argc, const char *cmd,
51 const char *usage, int flags)
53 if (common_args_process(argc, argv, min_argc, max_argc, cmd,
57 if (!current_handle) {
58 com_err(cmd, 0, "Extent handle not open");
64 static char *orig_prompt, *extent_prompt;
66 void do_extent_open(int argc, char *argv[])
73 if (check_fs_open(argv[0]))
78 printf("Current inode is %d\n", current_ino);
80 printf("No current inode\n");
84 if (common_inode_args_process(argc, argv, &inode, 0))
89 retval = ext2fs_extent_open(current_fs, inode, ¤t_handle);
91 com_err(argv[1], retval, "while opening extent handle");
97 orig_prompt = ss_get_prompt(sci_idx);
98 extent_prompt = malloc(strlen(orig_prompt) + 32);
99 strcpy(extent_prompt, orig_prompt);
100 cp = strchr(extent_prompt, ':');
103 sprintf(extent_prompt + strlen(extent_prompt), " (extent ino %d): ",
105 ss_add_request_table(sci_idx, &extent_cmds, 1, &ret);
106 ss_set_prompt(sci_idx, extent_prompt);
110 void do_extent_close(int argc, char *argv[])
114 if (common_args_process(argc, argv, 1, 1,
115 "extent_close", "", 0))
118 if (!current_handle) {
119 com_err(argv[0], 0, "Extent handle not open");
123 ext2fs_extent_free(current_handle);
124 current_handle = NULL;
126 ss_delete_request_table(sci_idx, &extent_cmds, &ret);
127 ss_set_prompt(sci_idx, orig_prompt);
129 extent_prompt = NULL;
132 static void generic_goto_node(const char *my_name, int argc,
135 struct ext2fs_extent extent;
138 if (my_name && common_args_process(argc, argv, 1, 1,
142 if (!current_handle) {
143 com_err(argv[0], 0, "Extent handle not open");
147 retval = ext2fs_extent_get(current_handle, op, &extent);
149 com_err(argv[0], retval, 0);
152 dbg_print_extent(0, &extent);
155 void do_current_node(int argc, char *argv[])
157 generic_goto_node("current_node", argc, argv, EXT2_EXTENT_CURRENT);
160 void do_root_node(int argc, char *argv[])
162 generic_goto_node("root_node", argc, argv, EXT2_EXTENT_ROOT);
165 void do_last_leaf(int argc, char *argv[])
167 generic_goto_node("last_leaf", argc, argv, EXT2_EXTENT_LAST_LEAF);
170 void do_first_sib(int argc, char *argv[])
172 generic_goto_node("first_sib", argc, argv, EXT2_EXTENT_FIRST_SIB);
175 void do_last_sib(int argc, char *argv[])
177 generic_goto_node("next_sib", argc, argv, EXT2_EXTENT_LAST_SIB);
180 void do_next_sib(int argc, char *argv[])
182 generic_goto_node("next_sib", argc, argv, EXT2_EXTENT_NEXT_SIB);
185 void do_prev_sib(int argc, char *argv[])
187 generic_goto_node("prev_sib", argc, argv, EXT2_EXTENT_PREV_SIB);
190 void do_next_leaf(int argc, char *argv[])
192 generic_goto_node("next_leaf", argc, argv, EXT2_EXTENT_NEXT_LEAF);
195 void do_prev_leaf(int argc, char *argv[])
197 generic_goto_node("prev_leaf", argc, argv, EXT2_EXTENT_PREV_LEAF);
200 void do_next(int argc, char *argv[])
202 generic_goto_node("next", argc, argv, EXT2_EXTENT_NEXT);
205 void do_prev(int argc, char *argv[])
207 generic_goto_node("prev", argc, argv, EXT2_EXTENT_PREV);
210 void do_up(int argc, char *argv[])
212 generic_goto_node("up", argc, argv, EXT2_EXTENT_UP);
215 void do_down(int argc, char *argv[])
217 generic_goto_node("down", argc, argv, EXT2_EXTENT_DOWN);
220 void do_delete_node(int argc, char *argv[])
222 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 err = strtoblk(argv[0], argv[1], &extent.e_lblk);
270 extent.e_len = parse_ulong(argv[2], argv[0], "logical block", &err);
274 err = strtoblk(argv[0], argv[3], &extent.e_pblk);
278 retval = ext2fs_extent_replace(current_handle, 0, &extent);
280 com_err(argv[0], retval, 0);
283 generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
286 void do_split_node(int argc, char *argv[])
290 if (common_extent_args_process(argc, argv, 1, 1, "split_node",
291 "", CHECK_FS_RW | CHECK_FS_BITMAPS))
294 retval = ext2fs_extent_node_split(current_handle);
296 com_err(argv[0], retval, 0);
299 generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
302 void do_insert_node(int argc, char *argv[])
304 const char *usage = "[--after] [--uninit] <lblk> <len> <pblk>";
306 struct ext2fs_extent extent;
311 if (common_extent_args_process(argc, argv, 3, 6, "insert_node",
312 usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
320 if (!strcmp(argv[1], "--after")) {
323 flags |= EXT2_EXTENT_INSERT_AFTER;
326 if (!strcmp(argv[1], "--uninit")) {
329 extent.e_flags |= EXT2_EXTENT_FLAGS_UNINIT;
336 fprintf(stderr, "usage: %s %s\n", cmd, usage);
340 err = strtoblk(cmd, argv[1], &extent.e_lblk);
344 extent.e_len = parse_ulong(argv[2], cmd,
349 err = strtoblk(cmd, argv[3], &extent.e_pblk);
353 retval = ext2fs_extent_insert(current_handle, flags, &extent);
355 com_err(cmd, retval, 0);
358 generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
361 void do_set_bmap(int argc, char **argv)
363 const char *usage = "[--uninit] <lblk> <pblk>";
364 struct ext2fs_extent extent;
372 if (common_extent_args_process(argc, argv, 3, 5, "set_bmap",
373 usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
376 if (argc > 2 && !strcmp(argv[1], "--uninit")) {
379 flags |= EXT2_EXTENT_SET_BMAP_UNINIT;
383 fprintf(stderr, "Usage: %s %s\n", cmd, usage);
387 err = strtoblk(cmd, argv[1], &logical);
391 err = strtoblk(cmd, argv[2], &physical);
395 retval = ext2fs_extent_set_bmap(current_handle, logical,
398 com_err(cmd, retval, 0);
402 retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
406 dbg_print_extent(0, &extent);
409 void do_print_all(int argc, char **argv)
411 const char *usage = "[--leaf-only|--reverse|--reverse-leaf]";
412 struct ext2fs_extent extent;
414 errcode_t end_err = EXT2_ET_EXTENT_NO_NEXT;
415 int op = EXT2_EXTENT_NEXT;
416 int first_op = EXT2_EXTENT_ROOT;
419 if (common_extent_args_process(argc, argv, 1, 2, "print_all",
424 if (!strcmp(argv[1], "--leaf-only"))
425 op = EXT2_EXTENT_NEXT_LEAF;
426 else if (!strcmp(argv[1], "--reverse")) {
427 op = EXT2_EXTENT_PREV;
428 first_op = EXT2_EXTENT_LAST_LEAF;
429 end_err = EXT2_ET_EXTENT_NO_PREV;
430 } else if (!strcmp(argv[1], "--reverse-leaf")) {
431 op = EXT2_EXTENT_PREV_LEAF;
432 first_op = EXT2_EXTENT_LAST_LEAF;
433 end_err = EXT2_ET_EXTENT_NO_PREV;
435 fprintf(stderr, "Usage: %s %s\n", argv[0], usage);
440 retval = ext2fs_extent_get(current_handle, first_op, &extent);
442 com_err(argv[0], retval, 0);
445 dbg_print_extent(0, &extent);
448 retval = ext2fs_extent_get(current_handle, op, &extent);
449 if (retval == end_err)
453 com_err(argv[0], retval, 0);
456 dbg_print_extent(0, &extent);
460 void do_fix_parents(int argc, char **argv)
464 if (common_extent_args_process(argc, argv, 1, 1, "fix_parents", "",
468 retval = ext2fs_extent_fix_parents(current_handle);
470 com_err(argv[0], retval, 0);
475 void do_info(int argc, char **argv)
477 struct ext2fs_extent extent;
478 struct ext2_extent_info info;
481 if (common_extent_args_process(argc, argv, 1, 1, "info", "", 0))
484 retval = ext2fs_extent_get_info(current_handle, &info);
486 com_err(argv[0], retval, 0);
490 retval = ext2fs_extent_get(current_handle,
491 EXT2_EXTENT_CURRENT, &extent);
493 com_err(argv[0], retval, 0);
497 dbg_print_extent(0, &extent);
499 printf("Current handle location: %d/%d (max: %d, bytes %d), level %d/%d\n",
500 info.curr_entry, info.num_entries, info.max_entries,
501 info.bytes_avail, info.curr_level, info.max_depth);
502 printf("\tmax lblk: %llu, max pblk: %llu\n", info.max_lblk,
504 printf("\tmax_len: %u, max_uninit_len: %u\n", info.max_len,
505 info.max_uninit_len);
508 void do_goto_block(int argc, char **argv)
514 if (common_extent_args_process(argc, argv, 2, 3, "goto_block",
518 if (strtoblk(argv[0], argv[1], &blk))
522 level = parse_ulong(argv[2], argv[0], "level", &err);
527 retval = ext2fs_extent_goto2(current_handle, level, (blk64_t) blk);
530 com_err(argv[0], retval,
531 "while trying to go to block %llu, level %d",
532 (unsigned long long) blk, level);
536 generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);