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567 lines
13 KiB
567 lines
13 KiB
/*
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* extent_inode.c --- direct extent tree manipulation
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*
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* Copyright (C) 2012 Theodore Ts'o. This file may be redistributed
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* under the terms of the GNU Public License.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <time.h>
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#include <sys/types.h>
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#else
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extern int optind;
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extern char *optarg;
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#endif
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#include "debugfs.h"
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static ext2_ino_t current_ino;
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static ext2_extent_handle_t current_handle;
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static void dbg_print_extent(char *desc, struct ext2fs_extent *extent)
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{
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if (desc)
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printf("%s: ", desc);
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printf("extent: lblk %llu--%llu, len %u, pblk %llu, flags: ",
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extent->e_lblk, extent->e_lblk + extent->e_len - 1,
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extent->e_len, extent->e_pblk);
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if (extent->e_flags & EXT2_EXTENT_FLAGS_LEAF)
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fputs("LEAF ", stdout);
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if (extent->e_flags & EXT2_EXTENT_FLAGS_UNINIT)
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fputs("UNINIT ", stdout);
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if (extent->e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
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fputs("2ND_VISIT ", stdout);
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if (!extent->e_flags)
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fputs("(none)", stdout);
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fputc('\n', stdout);
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}
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static int common_extent_args_process(int argc, char *argv[], int min_argc,
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int max_argc, const char *cmd,
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const char *usage, int flags)
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{
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if (common_args_process(argc, argv, min_argc, max_argc, cmd,
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usage, flags))
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return 1;
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if (!current_handle) {
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com_err(cmd, 0, "Extent handle not open");
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return 1;
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}
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return 0;
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}
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static char *orig_prompt, *extent_prompt;
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void do_extent_open(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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ext2_ino_t inode;
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int ret;
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errcode_t retval;
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char *cp;
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if (check_fs_open(argv[0]))
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return;
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if (argc == 1) {
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if (current_ino)
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printf("Current inode is %d\n", current_ino);
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else
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printf("No current inode\n");
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return;
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}
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if (common_inode_args_process(argc, argv, &inode, 0))
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return;
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current_ino = 0;
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retval = ext2fs_extent_open(current_fs, inode, ¤t_handle);
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if (retval) {
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com_err(argv[1], retval, "while opening extent handle");
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return;
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}
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current_ino = inode;
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orig_prompt = ss_get_prompt(sci_idx);
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extent_prompt = malloc(strlen(orig_prompt) + 32);
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if (extent_prompt == NULL) {
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com_err(argv[1], retval, "out of memory");
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return;
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}
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strcpy(extent_prompt, orig_prompt);
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cp = strchr(extent_prompt, ':');
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if (cp)
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*cp = 0;
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sprintf(extent_prompt + strlen(extent_prompt), " (extent ino %d): ",
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current_ino);
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ss_add_request_table(sci_idx, &extent_cmds, 1, &ret);
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ss_set_prompt(sci_idx, extent_prompt);
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return;
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}
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void do_extent_close(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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int ret;
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if (common_args_process(argc, argv, 1, 1,
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"extent_close", "", 0))
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return;
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if (!current_handle) {
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com_err(argv[0], 0, "Extent handle not open");
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return;
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}
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ext2fs_extent_free(current_handle);
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current_handle = NULL;
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current_ino = 0;
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ss_delete_request_table(sci_idx, &extent_cmds, &ret);
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ss_set_prompt(sci_idx, orig_prompt);
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free(extent_prompt);
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extent_prompt = NULL;
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}
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static void generic_goto_node(const char *my_name, int argc,
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char **argv, int op)
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{
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struct ext2fs_extent extent;
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errcode_t retval;
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if (my_name && common_args_process(argc, argv, 1, 1,
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my_name, "", 0))
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return;
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if (!current_handle) {
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com_err(argv[0], 0, "Extent handle not open");
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return;
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}
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retval = ext2fs_extent_get(current_handle, op, &extent);
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if (retval) {
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com_err(argv[0], retval, 0);
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return;
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}
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dbg_print_extent(0, &extent);
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}
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void do_current_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("current_node", argc, argv, EXT2_EXTENT_CURRENT);
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}
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void do_root_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("root_node", argc, argv, EXT2_EXTENT_ROOT);
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}
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void do_last_leaf(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("last_leaf", argc, argv, EXT2_EXTENT_LAST_LEAF);
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}
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void do_first_sib(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("first_sib", argc, argv, EXT2_EXTENT_FIRST_SIB);
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}
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void do_last_sib(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("next_sib", argc, argv, EXT2_EXTENT_LAST_SIB);
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}
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void do_next_sib(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("next_sib", argc, argv, EXT2_EXTENT_NEXT_SIB);
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}
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void do_prev_sib(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("prev_sib", argc, argv, EXT2_EXTENT_PREV_SIB);
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}
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void do_next_leaf(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("next_leaf", argc, argv, EXT2_EXTENT_NEXT_LEAF);
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}
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void do_prev_leaf(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("prev_leaf", argc, argv, EXT2_EXTENT_PREV_LEAF);
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}
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void do_next(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("next", argc, argv, EXT2_EXTENT_NEXT);
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}
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void do_prev(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("prev", argc, argv, EXT2_EXTENT_PREV);
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}
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void do_up(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("up", argc, argv, EXT2_EXTENT_UP);
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}
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void do_down(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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generic_goto_node("down", argc, argv, EXT2_EXTENT_DOWN);
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}
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void do_delete_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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struct ext2fs_extent extent;
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errcode_t retval;
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if (common_extent_args_process(argc, argv, 1, 1, "delete_node",
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"", CHECK_FS_RW | CHECK_FS_BITMAPS))
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return;
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retval = ext2fs_extent_delete(current_handle, 0);
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if (retval) {
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com_err(argv[0], retval, 0);
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return;
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}
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retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
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&extent);
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if (retval)
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return;
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dbg_print_extent(0, &extent);
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}
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void do_replace_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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const char *usage = "[--uninit] <lblk> <len> <pblk>";
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errcode_t retval;
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struct ext2fs_extent extent;
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int err;
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if (common_extent_args_process(argc, argv, 3, 5, "replace_node",
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usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
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return;
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extent.e_flags = 0;
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if (!strcmp(argv[1], "--uninit")) {
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argc--;
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argv++;
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extent.e_flags |= EXT2_EXTENT_FLAGS_UNINIT;
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}
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if (argc != 4) {
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fprintf(stderr, "Usage: %s %s\n", argv[0], usage);
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return;
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}
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err = strtoblk(argv[0], argv[1], "logical block", &extent.e_lblk);
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if (err)
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return;
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extent.e_len = parse_ulong(argv[2], argv[0], "length", &err);
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if (err)
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return;
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err = strtoblk(argv[0], argv[3], "physical block", &extent.e_pblk);
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if (err)
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return;
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retval = ext2fs_extent_replace(current_handle, 0, &extent);
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if (retval) {
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com_err(argv[0], retval, 0);
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return;
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}
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generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
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}
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void do_split_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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errcode_t retval;
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if (common_extent_args_process(argc, argv, 1, 1, "split_node",
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"", CHECK_FS_RW | CHECK_FS_BITMAPS))
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return;
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retval = ext2fs_extent_node_split(current_handle);
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if (retval) {
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com_err(argv[0], retval, 0);
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return;
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}
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generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
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}
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void do_insert_node(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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const char *usage = "[--after] [--uninit] <lblk> <len> <pblk>";
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errcode_t retval;
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struct ext2fs_extent extent;
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char *cmd;
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int err;
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int flags = 0;
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if (common_extent_args_process(argc, argv, 3, 6, "insert_node",
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usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
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return;
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cmd = argv[0];
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extent.e_flags = 0;
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while (argc > 2) {
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if (!strcmp(argv[1], "--after")) {
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argc--;
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argv++;
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flags |= EXT2_EXTENT_INSERT_AFTER;
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continue;
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}
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if (!strcmp(argv[1], "--uninit")) {
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argc--;
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argv++;
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extent.e_flags |= EXT2_EXTENT_FLAGS_UNINIT;
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continue;
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}
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break;
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}
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if (argc != 4) {
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fprintf(stderr, "usage: %s %s\n", cmd, usage);
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return;
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}
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err = strtoblk(cmd, argv[1], "logical block", &extent.e_lblk);
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if (err)
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return;
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extent.e_len = parse_ulong(argv[2], cmd, "length", &err);
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if (err)
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return;
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err = strtoblk(cmd, argv[3], "physical block", &extent.e_pblk);
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if (err)
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return;
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retval = ext2fs_extent_insert(current_handle, flags, &extent);
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if (retval) {
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com_err(cmd, retval, 0);
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return;
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}
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generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
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}
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void do_set_bmap(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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const char *usage = "[--uninit] <lblk> <pblk>";
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struct ext2fs_extent extent;
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errcode_t retval;
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blk64_t logical;
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blk64_t physical;
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char *cmd = argv[0];
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int flags = 0;
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int err;
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if (common_extent_args_process(argc, argv, 3, 5, "set_bmap",
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usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
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return;
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if (argc > 2 && !strcmp(argv[1], "--uninit")) {
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argc--;
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argv++;
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flags |= EXT2_EXTENT_SET_BMAP_UNINIT;
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}
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if (argc != 3) {
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fprintf(stderr, "Usage: %s %s\n", cmd, usage);
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return;
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}
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err = strtoblk(cmd, argv[1], "logical block", &logical);
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if (err)
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return;
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err = strtoblk(cmd, argv[2], "physical block", &physical);
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if (err)
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return;
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retval = ext2fs_extent_set_bmap(current_handle, logical,
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physical, flags);
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if (retval) {
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com_err(cmd, retval, 0);
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return;
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}
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retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
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&extent);
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if (retval)
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return;
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dbg_print_extent(0, &extent);
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}
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void do_print_all(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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const char *usage = "[--leaf-only|--reverse|--reverse-leaf]";
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struct ext2fs_extent extent;
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errcode_t retval;
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errcode_t end_err = EXT2_ET_EXTENT_NO_NEXT;
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int op = EXT2_EXTENT_NEXT;
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int first_op = EXT2_EXTENT_ROOT;
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if (common_extent_args_process(argc, argv, 1, 2, "print_all",
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usage, 0))
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return;
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if (argc == 2) {
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if (!strcmp(argv[1], "--leaf-only"))
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op = EXT2_EXTENT_NEXT_LEAF;
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else if (!strcmp(argv[1], "--reverse")) {
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op = EXT2_EXTENT_PREV;
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first_op = EXT2_EXTENT_LAST_LEAF;
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end_err = EXT2_ET_EXTENT_NO_PREV;
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} else if (!strcmp(argv[1], "--reverse-leaf")) {
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op = EXT2_EXTENT_PREV_LEAF;
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first_op = EXT2_EXTENT_LAST_LEAF;
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end_err = EXT2_ET_EXTENT_NO_PREV;
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} else {
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fprintf(stderr, "Usage: %s %s\n", argv[0], usage);
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return;
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}
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}
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retval = ext2fs_extent_get(current_handle, first_op, &extent);
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if (retval) {
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com_err(argv[0], retval, 0);
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return;
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}
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dbg_print_extent(0, &extent);
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while (1) {
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retval = ext2fs_extent_get(current_handle, op, &extent);
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if (retval == end_err)
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break;
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if (retval) {
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com_err(argv[0], retval, 0);
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return;
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}
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dbg_print_extent(0, &extent);
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}
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}
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void do_fix_parents(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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errcode_t retval;
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if (common_extent_args_process(argc, argv, 1, 1, "fix_parents", "",
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CHECK_FS_RW))
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return;
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retval = ext2fs_extent_fix_parents(current_handle);
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if (retval) {
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com_err(argv[0], retval, 0);
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return;
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}
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}
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void do_info(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
struct ext2fs_extent extent;
|
|
struct ext2_extent_info info;
|
|
errcode_t retval;
|
|
|
|
if (common_extent_args_process(argc, argv, 1, 1, "info", "", 0))
|
|
return;
|
|
|
|
retval = ext2fs_extent_get_info(current_handle, &info);
|
|
if (retval) {
|
|
com_err(argv[0], retval, 0);
|
|
return;
|
|
}
|
|
|
|
retval = ext2fs_extent_get(current_handle,
|
|
EXT2_EXTENT_CURRENT, &extent);
|
|
if (retval) {
|
|
com_err(argv[0], retval, 0);
|
|
return;
|
|
}
|
|
|
|
dbg_print_extent(0, &extent);
|
|
|
|
printf("Current handle location: %d/%d (max: %d, bytes %d), level %d/%d\n",
|
|
info.curr_entry, info.num_entries, info.max_entries,
|
|
info.bytes_avail, info.curr_level, info.max_depth);
|
|
printf("\tmax lblk: %llu, max pblk: %llu\n", info.max_lblk,
|
|
info.max_pblk);
|
|
printf("\tmax_len: %u, max_uninit_len: %u\n", info.max_len,
|
|
info.max_uninit_len);
|
|
}
|
|
|
|
void do_goto_block(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
|
|
void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
errcode_t retval;
|
|
blk64_t blk;
|
|
int level = 0, err;
|
|
|
|
if (common_extent_args_process(argc, argv, 2, 3, "goto_block",
|
|
"block [level]", 0))
|
|
return;
|
|
|
|
if (strtoblk(argv[0], argv[1], NULL, &blk))
|
|
return;
|
|
|
|
if (argc == 3) {
|
|
level = parse_ulong(argv[2], argv[0], "level", &err);
|
|
if (err)
|
|
return;
|
|
}
|
|
|
|
retval = ext2fs_extent_goto2(current_handle, level, (blk64_t) blk);
|
|
|
|
if (retval) {
|
|
com_err(argv[0], retval,
|
|
"while trying to go to block %llu, level %d",
|
|
(unsigned long long) blk, level);
|
|
return;
|
|
}
|
|
|
|
generic_goto_node(NULL, argc, argv, EXT2_EXTENT_CURRENT);
|
|
}
|