| /* |
| * debugfs.c --- a program which allows you to attach an ext2fs |
| * filesystem and play with it. |
| * |
| * Copyright (C) 1993 Theodore Ts'o. This file may be redistributed |
| * under the terms of the GNU Public License. |
| * |
| * Modifications by Robert Sanders <gt8134b@prism.gatech.edu> |
| */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <ctype.h> |
| #include <string.h> |
| #include <time.h> |
| #include <getopt.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| |
| #include "et/com_err.h" |
| #include "ss/ss.h" |
| #include "debugfs.h" |
| |
| extern ss_request_table debug_cmds; |
| |
| ext2_filsys fs = NULL; |
| ino_t root, cwd; |
| |
| void open_filesystem(char *device, int open_flags) |
| { |
| int retval; |
| |
| retval = ext2fs_open(device, open_flags, 0, 0, unix_io_manager, &fs); |
| if (retval) { |
| com_err(device, retval, "while opening filesystem"); |
| fs = NULL; |
| return; |
| } |
| retval = ext2fs_read_inode_bitmap(fs); |
| if (retval) { |
| com_err(device, retval, "while reading inode bitmap"); |
| goto errout; |
| } |
| retval = ext2fs_read_block_bitmap(fs); |
| if (retval) { |
| com_err(device, retval, "while reading block bitmap"); |
| goto errout; |
| } |
| root = cwd = EXT2_ROOT_INO; |
| return; |
| |
| errout: |
| retval = ext2fs_close(fs); |
| if (retval) |
| com_err(device, retval, "while trying to close filesystem"); |
| fs = NULL; |
| } |
| |
| void do_open_filesys(int argc, char **argv) |
| { |
| char *usage = "Usage: open [-w] <device>"; |
| char c; |
| int open_flags = 0; |
| |
| optind = 0; |
| while ((c = getopt (argc, argv, "w")) != EOF) { |
| switch (c) { |
| case 'w': |
| open_flags = EXT2_FLAG_RW; |
| break; |
| default: |
| com_err(argv[0], 0, usage); |
| return; |
| } |
| } |
| if (optind != argc-1) { |
| com_err(argv[0], 0, usage); |
| return; |
| } |
| if (check_fs_not_open(argv[0])) |
| return; |
| open_filesystem(argv[optind], open_flags); |
| } |
| |
| void close_filesystem() |
| { |
| int retval; |
| |
| if (fs->flags & EXT2_FLAG_IB_DIRTY) { |
| retval = ext2fs_write_inode_bitmap(fs); |
| if (retval) |
| com_err("ext2fs_write_inode_bitmap", retval, ""); |
| } |
| if (fs->flags & EXT2_FLAG_BB_DIRTY) { |
| retval = ext2fs_write_block_bitmap(fs); |
| if (retval) |
| com_err("ext2fs_write_block_bitmap", retval, ""); |
| } |
| retval = ext2fs_close(fs); |
| if (retval) |
| com_err("ext2fs_close", retval, ""); |
| fs = NULL; |
| return; |
| } |
| |
| void do_close_filesys(int argc, char **argv) |
| { |
| if (argc > 1) { |
| com_err(argv[0], 0, "Usage: close_filesys"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| close_filesystem(); |
| } |
| |
| void do_init_filesys(int argc, char **argv) |
| { |
| char *usage = "Usage: initialize <device> <blocksize>"; |
| struct ext2_super_block param; |
| errcode_t retval; |
| char *tmp; |
| |
| if (argc != 3) { |
| com_err(argv[0], 0, usage); |
| return; |
| } |
| if (check_fs_not_open(argv[0])) |
| return; |
| |
| memset(¶m, 0, sizeof(struct ext2_super_block)); |
| param.s_blocks_count = strtoul(argv[2], &tmp, 0); |
| if (*tmp) { |
| com_err(argv[0], 0, "Bad blocks count - %s", argv[2]); |
| return; |
| } |
| retval = ext2fs_initialize(argv[1], 0, ¶m, unix_io_manager, &fs); |
| if (retval) { |
| com_err(argv[1], retval, "while initializing filesystem"); |
| fs = NULL; |
| return; |
| } |
| root = cwd = EXT2_ROOT_INO; |
| return; |
| } |
| |
| void do_show_super_stats(int argc, char *argv[]) |
| { |
| int i; |
| FILE *out; |
| |
| if (argc > 1) { |
| com_err(argv[0], 0, "Usage: show_super"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| out = open_pager(); |
| fprintf(out, "Filesystem is read-%s\n", fs->flags & EXT2_FLAG_RW ? |
| "write" : "only"); |
| fprintf(out, "Last mount time = %s", ctime(&fs->super->s_mtime)); |
| fprintf(out, "Last write time = %s", ctime(&fs->super->s_wtime)); |
| fprintf(out, "Mount counts = %d (maximal = %d)\n", |
| fs->super->s_mnt_count, fs->super->s_max_mnt_count); |
| fprintf(out, "Superblock size = %d\n", sizeof(struct ext2_super_block)); |
| fprintf(out, "Block size = %d, fragment size = %d\n", |
| EXT2_BLOCK_SIZE(fs->super), EXT2_FRAG_SIZE(fs->super)); |
| fprintf(out, "%ld inodes, %ld free\n", fs->super->s_inodes_count, |
| fs->super->s_free_inodes_count); |
| fprintf(out, "%ld blocks, %ld free, %ld reserved, first block = %ld\n", |
| fs->super->s_blocks_count, fs->super->s_free_blocks_count, |
| fs->super->s_r_blocks_count, fs->super->s_first_data_block); |
| fprintf(out, "%ld blocks per group\n", fs->super->s_blocks_per_group); |
| fprintf(out, "%ld fragments per group\n", fs->super->s_frags_per_group); |
| fprintf(out, "%ld inodes per group\n", EXT2_INODES_PER_GROUP(fs->super)); |
| fprintf(out, "%d inodes per block\n", EXT2_INODES_PER_BLOCK(fs->super)); |
| fprintf(out, "%ld group%s (%ld descriptors block%s)\n", |
| fs->group_desc_count, (fs->group_desc_count != 1) ? "s" : "", |
| fs->desc_blocks, (fs->desc_blocks != 1) ? "s" : ""); |
| for (i = 0; i < fs->group_desc_count; i++) |
| fprintf(out, " Group %2d: block bitmap at %ld, " |
| "inode bitmap at %ld, " |
| "inode table at %ld\n" |
| " %d free block%s, " |
| "%d free inode%s, " |
| "%d used director%s\n", |
| i, fs->group_desc[i].bg_block_bitmap, |
| fs->group_desc[i].bg_inode_bitmap, |
| fs->group_desc[i].bg_inode_table, |
| fs->group_desc[i].bg_free_blocks_count, |
| fs->group_desc[i].bg_free_blocks_count != 1 ? "s" : "", |
| fs->group_desc[i].bg_free_inodes_count, |
| fs->group_desc[i].bg_free_inodes_count != 1 ? "s" : "", |
| fs->group_desc[i].bg_used_dirs_count, |
| fs->group_desc[i].bg_used_dirs_count != 1 ? "ies" : "y"); |
| close_pager(out); |
| } |
| |
| struct list_blocks_struct { |
| FILE *f; |
| int total; |
| }; |
| |
| int list_blocks_proc(ext2_filsys fs, blk_t *blocknr, int blockcnt, void *private) |
| { |
| struct list_blocks_struct *lb = (struct list_blocks_struct *) private; |
| |
| fprintf(lb->f, "%ld ", *blocknr); |
| lb->total++; |
| return 0; |
| } |
| |
| |
| void dump_blocks(FILE *f, ino_t inode) |
| { |
| struct list_blocks_struct lb; |
| |
| fprintf(f, "BLOCKS:\n"); |
| lb.total = 0; |
| lb.f = f; |
| ext2fs_block_iterate(fs,inode,0,NULL,list_blocks_proc,(void *)&lb); |
| if (lb.total) |
| fprintf(f, "\nTOTAL: %d\n", lb.total); |
| fprintf(f,"\n"); |
| } |
| |
| |
| void dump_inode(ino_t inode_num, struct ext2_inode inode) |
| { |
| char *i_type; |
| FILE *out; |
| |
| out = open_pager(); |
| if (S_ISDIR(inode.i_mode)) i_type = "directory"; |
| else if (S_ISREG(inode.i_mode)) i_type = "regular"; |
| else if (S_ISLNK(inode.i_mode)) i_type = "symlink"; |
| else if (S_ISBLK(inode.i_mode)) i_type = "block special"; |
| else if (S_ISCHR(inode.i_mode)) i_type = "character special"; |
| else if (S_ISFIFO(inode.i_mode)) i_type = "FIFO"; |
| else if (S_ISSOCK(inode.i_mode)) i_type = "socket"; |
| else i_type = "bad type"; |
| fprintf(out, "Inode: %ld Type: %s ", inode_num, i_type); |
| fprintf(out, "Mode: %04o Flags: 0x%lx Version: %ld\n", |
| inode.i_mode & 0777, inode.i_flags, inode.i_version); |
| fprintf(out, "User: %5d Group: %5d Size: %ld\n", |
| inode.i_uid, inode.i_gid, inode.i_size); |
| fprintf(out, "File ACL: %ld Directory ACL: %ld\n", |
| inode.i_file_acl, inode.i_dir_acl); |
| fprintf(out, "Links: %d Blockcount: %ld\n", inode.i_links_count, |
| inode.i_blocks); |
| fprintf(out, "Fragment: Address: %ld Number: %d Size: %d\n", |
| inode.i_faddr, inode.i_frag, inode.i_fsize); |
| fprintf(out, "ctime: 0x%08lx -- %s", inode.i_ctime, |
| ctime(&inode.i_ctime)); |
| fprintf(out, "atime: 0x%08lx -- %s", inode.i_atime, |
| ctime(&inode.i_atime)); |
| fprintf(out, "mtime: 0x%08lx -- %s", inode.i_mtime, |
| ctime(&inode.i_mtime)); |
| if (inode.i_dtime) |
| fprintf(out, "dtime: 0x%08lx -- %s", inode.i_dtime, |
| ctime(&inode.i_dtime)); |
| if (S_ISLNK(inode.i_mode) && inode.i_blocks == 0) |
| fprintf(out, "Fast_link_dest: %s\n", (char *)inode.i_block); |
| else |
| dump_blocks(out, inode_num); |
| close_pager(out); |
| } |
| |
| |
| void do_stat(int argc, char *argv[]) |
| { |
| ino_t inode; |
| struct ext2_inode inode_buf; |
| int retval; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: stat <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| inode = string_to_inode(argv[1]); |
| if (!inode) |
| return; |
| |
| retval = ext2fs_read_inode(fs,inode,&inode_buf); |
| if (retval) |
| { |
| com_err(argv[0], 0, "Reading inode"); |
| return; |
| } |
| |
| dump_inode(inode,inode_buf); |
| return; |
| } |
| |
| void do_chroot(int argc, char *argv[]) |
| { |
| ino_t inode; |
| int retval; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: chroot <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| inode = string_to_inode(argv[1]); |
| if (!inode) |
| return; |
| |
| retval = ext2fs_check_directory(fs, inode); |
| if (retval) { |
| com_err(argv[1], retval, ""); |
| return; |
| } |
| root = inode; |
| } |
| |
| void do_clri(int argc, char *argv[]) |
| { |
| ino_t inode; |
| int retval; |
| struct ext2_inode inode_buf; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: clri <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| if (!(fs->flags & EXT2_FLAG_RW)) { |
| com_err(argv[0], 0, "Filesystem opened read/only"); |
| return; |
| } |
| inode = string_to_inode(argv[1]); |
| if (!inode) |
| return; |
| |
| retval = ext2fs_read_inode(fs, inode, &inode_buf); |
| if (retval) { |
| com_err(argv[0], 0, "while trying to read inode %d", inode); |
| return; |
| } |
| memset(&inode_buf, 0, sizeof(inode_buf)); |
| retval = ext2fs_write_inode(fs, inode, &inode_buf); |
| if (retval) { |
| com_err(argv[0], retval, "while trying to write inode %d", |
| inode); |
| return; |
| } |
| } |
| |
| void do_freei(int argc, char *argv[]) |
| { |
| ino_t inode; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: freei <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| if (!(fs->flags & EXT2_FLAG_RW)) { |
| com_err(argv[0], 0, "Filesystem opened read/only"); |
| return; |
| } |
| inode = string_to_inode(argv[1]); |
| if (!inode) |
| return; |
| |
| if (!ext2fs_test_inode_bitmap(fs,fs->inode_map,inode)) |
| com_err(argv[0], 0, "Warning: inode already clear"); |
| ext2fs_unmark_inode_bitmap(fs,fs->inode_map,inode); |
| ext2fs_mark_ib_dirty(fs); |
| } |
| |
| void do_seti(int argc, char *argv[]) |
| { |
| ino_t inode; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: seti <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| if (!(fs->flags & EXT2_FLAG_RW)) { |
| com_err(argv[0], 0, "Filesystem opened read/only"); |
| return; |
| } |
| inode = string_to_inode(argv[1]); |
| if (!inode) |
| return; |
| |
| if (ext2fs_test_inode_bitmap(fs,fs->inode_map,inode)) |
| com_err(argv[0], 0, "Warning: inode already set"); |
| ext2fs_mark_inode_bitmap(fs,fs->inode_map,inode); |
| ext2fs_mark_ib_dirty(fs); |
| } |
| |
| void do_testi(int argc, char *argv[]) |
| { |
| ino_t inode; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: testi <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| inode = string_to_inode(argv[1]); |
| if (!inode) |
| return; |
| |
| if (ext2fs_test_inode_bitmap(fs,fs->inode_map,inode)) |
| printf("Inode %ld is marked in use\n", inode); |
| else |
| printf("Inode %ld is not in use\n", inode); |
| } |
| |
| |
| void do_freeb(int argc, char *argv[]) |
| { |
| blk_t block; |
| char *tmp; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: freeb <block>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| if (!(fs->flags & EXT2_FLAG_RW)) { |
| com_err(argv[0], 0, "Filesystem opened read/only"); |
| return; |
| } |
| block = strtoul(argv[1], &tmp, 0); |
| if (!block || *tmp) { |
| com_err(argv[0], 0, "No block 0"); |
| return; |
| } |
| if (!ext2fs_test_block_bitmap(fs,fs->block_map,block)) |
| com_err(argv[0], 0, "Warning: block already clear"); |
| ext2fs_unmark_block_bitmap(fs,fs->block_map,block); |
| ext2fs_mark_bb_dirty(fs); |
| } |
| |
| void do_setb(int argc, char *argv[]) |
| { |
| blk_t block; |
| char *tmp; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: setb <block>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| if (!(fs->flags & EXT2_FLAG_RW)) { |
| com_err(argv[0], 0, "Filesystem opened read/only"); |
| return; |
| } |
| block = strtoul(argv[1], &tmp, 0); |
| if (!block || *tmp) { |
| com_err(argv[0], 0, "No block 0"); |
| return; |
| } |
| if (ext2fs_test_block_bitmap(fs,fs->block_map,block)) |
| com_err(argv[0], 0, "Warning: block already set"); |
| ext2fs_mark_block_bitmap(fs,fs->block_map,block); |
| ext2fs_mark_bb_dirty(fs); |
| } |
| |
| void do_testb(int argc, char *argv[]) |
| { |
| blk_t block; |
| char *tmp; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: testb <block>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| block = strtoul(argv[1], &tmp, 0); |
| if (!block || *tmp) { |
| com_err(argv[0], 0, "No block 0"); |
| return; |
| } |
| if (ext2fs_test_block_bitmap(fs,fs->block_map,block)) |
| printf("Block %ld marked in use\n", block); |
| else printf("Block %ld not in use\n", block); |
| } |
| |
| void modify_char(char *com, char *prompt, char *format, u_char *val) |
| { |
| char buf[200]; |
| u_char v; |
| char *tmp; |
| |
| sprintf(buf, format, *val); |
| printf("%30s [%s] ", prompt, buf); |
| fgets(buf, sizeof(buf), stdin); |
| if (buf[strlen (buf) - 1] == '\n') |
| buf[strlen (buf) - 1] = '\0'; |
| if (!buf[0]) |
| return; |
| v = strtol(buf, &tmp, 0); |
| if (*tmp) |
| com_err(com, 0, "Bad value - %s", buf); |
| else |
| *val = v; |
| } |
| |
| void modify_short(char *com, char *prompt, char *format, u_short *val) |
| { |
| char buf[200]; |
| u_short v; |
| char *tmp; |
| |
| sprintf(buf, format, *val); |
| printf("%30s [%s] ", prompt, buf); |
| fgets(buf, sizeof(buf), stdin); |
| if (buf[strlen (buf) - 1] == '\n') |
| buf[strlen (buf) - 1] = '\0'; |
| if (!buf[0]) |
| return; |
| v = strtol(buf, &tmp, 0); |
| if (*tmp) |
| com_err(com, 0, "Bad value - %s", buf); |
| else |
| *val = v; |
| } |
| |
| void modify_long(char *com, char *prompt, char *format, u_long *val) |
| { |
| char buf[200]; |
| u_long v; |
| char *tmp; |
| |
| sprintf(buf, format, *val); |
| printf("%30s [%s] ", prompt, buf); |
| fgets(buf, sizeof(buf), stdin); |
| if (buf[strlen (buf) - 1] == '\n') |
| buf[strlen (buf) - 1] = '\0'; |
| if (!buf[0]) |
| return; |
| v = strtol(buf, &tmp, 0); |
| if (*tmp) |
| com_err(com, 0, "Bad value - %s", buf); |
| else |
| *val = v; |
| } |
| |
| |
| void do_modify_inode(int argc, char *argv[]) |
| { |
| struct ext2_inode inode; |
| ino_t inode_num; |
| int i; |
| errcode_t retval; |
| char buf[80]; |
| char *hex_format = "0x%x"; |
| char *octal_format = "0%o"; |
| char *decimal_format = "%d"; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: modify_inode <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| if (!(fs->flags & EXT2_FLAG_RW)) { |
| com_err(argv[0], 0, "Filesystem opened read/only"); |
| return; |
| } |
| |
| inode_num = string_to_inode(argv[1]); |
| if (!inode_num) |
| return; |
| |
| retval = ext2fs_read_inode(fs, inode_num, &inode); |
| if (retval) { |
| com_err(argv[1], retval, "while trying to read inode %d", |
| inode_num); |
| return; |
| } |
| |
| modify_short(argv[0], "Mode", octal_format, &inode.i_mode); |
| modify_short(argv[0], "User ID", decimal_format, &inode.i_uid); |
| modify_short(argv[0], "Group ID", decimal_format, &inode.i_gid); |
| modify_long(argv[0], "Size", decimal_format, &inode.i_size); |
| modify_long(argv[0], "Creation time", decimal_format, &inode.i_ctime); |
| modify_long(argv[0], "Modification time", decimal_format, &inode.i_mtime); |
| modify_long(argv[0], "Access time", decimal_format, &inode.i_atime); |
| modify_long(argv[0], "Deletion time", decimal_format, &inode.i_dtime); |
| modify_short(argv[0], "Link count", decimal_format, &inode.i_links_count); |
| modify_long(argv[0], "Block count", decimal_format, &inode.i_blocks); |
| modify_long(argv[0], "File flags", hex_format, &inode.i_flags); |
| modify_long(argv[0], "Reserved1", decimal_format, &inode.i_reserved1); |
| modify_long(argv[0], "File acl", decimal_format, &inode.i_file_acl); |
| modify_long(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl); |
| modify_long(argv[0], "Fragment address", decimal_format, &inode.i_faddr); |
| modify_char(argv[0], "Fragment number", decimal_format, &inode.i_frag); |
| modify_char(argv[0], "Fragment size", decimal_format, &inode.i_fsize); |
| for (i=0; i < EXT2_NDIR_BLOCKS; i++) { |
| sprintf(buf, "Direct Block #%d", i); |
| modify_long(argv[0], buf, decimal_format, &inode.i_block[i]); |
| } |
| modify_long(argv[0], "Indirect Block", decimal_format, |
| &inode.i_block[EXT2_IND_BLOCK]); |
| modify_long(argv[0], "Double Indirect Block", decimal_format, |
| &inode.i_block[EXT2_DIND_BLOCK]); |
| modify_long(argv[0], "Triple Indirect Block", decimal_format, |
| &inode.i_block[EXT2_TIND_BLOCK]); |
| retval = ext2fs_write_inode(fs, inode_num, &inode); |
| if (retval) { |
| com_err(argv[1], retval, "while trying to write inode %d", |
| inode_num); |
| return; |
| } |
| } |
| |
| /* |
| * list directory |
| */ |
| |
| struct list_dir_struct { |
| FILE *f; |
| int col; |
| }; |
| |
| int list_dir_proc(struct ext2_dir_entry *dirent, |
| int offset, |
| int blocksize, |
| char *buf, |
| void *private) |
| { |
| char name[EXT2_NAME_LEN]; |
| char tmp[EXT2_NAME_LEN + 16]; |
| |
| struct list_dir_struct *ls = (struct list_dir_struct *) private; |
| int thislen; |
| |
| thislen = (dirent->name_len < EXT2_NAME_LEN) ? dirent->name_len : |
| EXT2_NAME_LEN; |
| strncpy(name, dirent->name, thislen); |
| name[thislen] = '\0'; |
| |
| sprintf(tmp, "%ld (%d) %s ", dirent->inode, dirent->rec_len, name); |
| thislen = strlen(tmp); |
| |
| if (ls->col + thislen > 80) { |
| fprintf(ls->f, "\n"); |
| ls->col = 0; |
| } |
| fprintf(ls->f, "%s", tmp); |
| ls->col += thislen; |
| |
| return 0; |
| } |
| |
| void do_list_dir(int argc, char *argv[]) |
| { |
| ino_t inode; |
| int retval; |
| struct list_dir_struct ls; |
| |
| if (argc > 2) { |
| com_err(argv[0], 0, "Usage: list_dir [pathname]"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| if (argc == 2) |
| inode = string_to_inode(argv[1]); |
| else |
| inode = cwd; |
| if (!inode) |
| return; |
| |
| ls.f = open_pager(); |
| ls.col = 0; |
| retval = ext2fs_dir_iterate(fs, inode, DIRENT_FLAG_INCLUDE_EMPTY, |
| 0, list_dir_proc, &ls); |
| fprintf(ls.f, "\n"); |
| close_pager(ls.f); |
| if (retval) |
| com_err(argv[1], retval, ""); |
| |
| return; |
| } |
| |
| void do_change_working_dir(int argc, char *argv[]) |
| { |
| ino_t inode; |
| int retval; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: cd <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| inode = string_to_inode(argv[1]); |
| if (!inode) |
| return; |
| |
| retval = ext2fs_check_directory(fs, inode); |
| if (retval) { |
| com_err(argv[1], retval, ""); |
| return; |
| } |
| cwd = inode; |
| return; |
| } |
| |
| void do_iname(int argc, char *argv[]) |
| { |
| ino_t inode; |
| |
| if (argc > 2) { |
| com_err(argv[0], 0, "Usage: iname <inode>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| inode = strtoul(argv[1], NULL, 0); |
| com_err(argv[0],0,"Function unimplemented"); |
| return; |
| } |
| |
| void do_print_working_directory(int argc, char *argv[]) |
| { |
| int retval; |
| char *pathname = NULL; |
| |
| if (argc > 1) { |
| com_err(argv[0], 0, "Usage: print_working_directory"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| retval = ext2fs_get_pathname(fs, cwd, 0, &pathname); |
| if (retval) { |
| com_err(argv[0], retval, |
| "while trying to get pathname of cwd"); |
| } |
| printf("[pwd] INODE: %6ld PATH: %s\n", cwd, pathname); |
| free(pathname); |
| retval = ext2fs_get_pathname(fs, root, 0, &pathname); |
| if (retval) { |
| com_err(argv[0], retval, |
| "while trying to get pathname of root"); |
| } |
| printf("[root] INODE: %6ld PATH: %s\n", root, pathname); |
| free(pathname); |
| return; |
| } |
| |
| |
| void make_link(char *sourcename, char *destname) |
| { |
| ino_t inode; |
| int retval; |
| ino_t dir; |
| char *dest, *cp, *basename; |
| |
| /* |
| * Get the source inode |
| */ |
| inode = string_to_inode(sourcename); |
| if (!inode) |
| return; |
| basename = strrchr(sourcename, '/'); |
| if (basename) |
| basename++; |
| else |
| basename = sourcename; |
| /* |
| * Figure out the destination. First see if it exists and is |
| * a directory. |
| */ |
| if (! (retval=ext2fs_namei(fs, root, cwd, destname, &dir))) |
| dest = basename; |
| else { |
| /* |
| * OK, it doesn't exist. See if it is |
| * '<dir>/basename' or 'basename' |
| */ |
| cp = strrchr(destname, '/'); |
| if (cp) { |
| *cp = 0; |
| dir = string_to_inode(destname); |
| if (!dir) |
| return; |
| dest = cp+1; |
| } else { |
| dir = cwd; |
| dest = destname; |
| } |
| } |
| |
| retval = ext2fs_link(fs, dir, dest, inode, 0); |
| if (retval) |
| com_err("make_link", retval, ""); |
| return; |
| } |
| |
| |
| void do_link(int argc, char *argv[]) |
| { |
| if (argc != 3) { |
| com_err(argv[0], 0, "Usage: link <source_file> <dest_name>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| make_link(argv[1], argv[2]); |
| } |
| |
| |
| void unlink_file_by_name(char *filename) |
| { |
| int retval; |
| ino_t dir; |
| char *basename; |
| |
| basename = strrchr(filename, '/'); |
| if (basename) { |
| *basename++ = '0'; |
| dir = string_to_inode(filename); |
| if (!dir) |
| return; |
| } else { |
| dir = cwd; |
| basename = filename; |
| } |
| retval = ext2fs_unlink(fs, dir, basename, 0, 0); |
| if (retval) |
| com_err("unlink_file_by_name", retval, ""); |
| return; |
| } |
| |
| void do_unlink(int argc, char *argv[]) |
| { |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: unlink <pathname>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| unlink_file_by_name(argv[1]); |
| } |
| |
| void do_find_free_block(int argc, char *argv[]) |
| { |
| blk_t free_blk, goal; |
| errcode_t retval; |
| char *tmp; |
| |
| if (argc > 2 || *argv[1] == '?') { |
| com_err(argv[0], 0, "Usage: find_free_block <goal>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| if (argc > 1) { |
| goal = strtol(argv[1], &tmp, 0); |
| if (*tmp) { |
| com_err(argv[0], 0, "Bad goal - %s", argv[1]); |
| return; |
| } |
| } |
| else |
| goal = fs->super->s_first_data_block; |
| |
| retval = ext2fs_new_block(fs, goal, 0, &free_blk); |
| if (retval) |
| com_err("ext2fs_new_block", retval, ""); |
| else |
| printf("Free block found: %ld\n", free_blk); |
| |
| } |
| |
| void do_find_free_inode(int argc, char *argv[]) |
| { |
| ino_t free_inode, dir; |
| int mode; |
| int retval; |
| char *tmp; |
| |
| if (argc > 3 || *argv[1] == '?') { |
| com_err(argv[0], 0, "Usage: find_free_inode <dir> <mode>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| if (argc > 1) { |
| dir = strtol(argv[1], &tmp, 0); |
| if (*tmp) { |
| com_err(argv[0], 0, "Bad dir - %s", argv[1]); |
| return; |
| } |
| } |
| else |
| dir = root; |
| if (argc > 2) { |
| mode = strtol(argv[2], &tmp, 0); |
| if (*tmp) { |
| com_err(argv[0], 0, "Bad mode - %s", argv[2]); |
| return; |
| } |
| } |
| else |
| mode = 010755; |
| |
| retval = ext2fs_new_inode(fs, dir, mode, 0, &free_inode); |
| if (retval) |
| com_err("ext2fs_new_inode", retval, ""); |
| else |
| printf("Free inode found: %ld\n", free_inode); |
| } |
| |
| /* |
| * Doesn't change directories count ---> add this later |
| */ |
| |
| void do_mkdir(int argc, char *argv[]) |
| { |
| char *cp; |
| ino_t parent; |
| char *name; |
| errcode_t retval; |
| |
| if (check_fs_open(argv[0])) |
| return; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: mkdir <file>"); |
| return; |
| } |
| |
| cp = strrchr(argv[1], '/'); |
| if (cp) { |
| *cp = 0; |
| parent = string_to_inode(argv[1]); |
| if (!parent) { |
| com_err(argv[1], ENOENT, ""); |
| return; |
| } |
| name = cp+1; |
| } else { |
| parent = cwd; |
| name = argv[1]; |
| } |
| |
| |
| retval = ext2fs_mkdir(fs, parent, 0, name); |
| if (retval) { |
| com_err("ext2fs_mkdir", retval, ""); |
| return; |
| } |
| |
| } |
| |
| void do_rmdir(int argc, char *argv[]) |
| { |
| printf("Unimplemented\n"); |
| } |
| |
| |
| int release_blocks_proc(ext2_filsys fs, blk_t *blocknr, int blockcnt, void *private) |
| { |
| printf("%ld ", *blocknr); |
| ext2fs_unmark_block_bitmap(fs,fs->block_map,*blocknr); |
| return 0; |
| } |
| |
| void kill_file_by_inode(ino_t inode) |
| { |
| struct ext2_inode inode_buf; |
| |
| ext2fs_read_inode(fs, inode, &inode_buf); |
| inode_buf.i_dtime = time(NULL); |
| ext2fs_write_inode(fs, inode, &inode_buf); |
| |
| printf("Kill file by inode %ld\n", inode); |
| ext2fs_block_iterate(fs,inode,0,NULL,release_blocks_proc,NULL); |
| ext2fs_unmark_inode_bitmap(fs,fs->inode_map,inode); |
| |
| ext2fs_mark_bb_dirty(fs); |
| ext2fs_mark_ib_dirty(fs); |
| } |
| |
| |
| void do_kill_file(int argc, char *argv[]) |
| { |
| ino_t inode_num; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: kill_file <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| inode_num = string_to_inode(argv[1]); |
| if (!inode_num) { |
| com_err(argv[0], 0, "Cannot find file"); |
| return; |
| } |
| kill_file_by_inode(inode_num); |
| } |
| |
| void do_rm(int argc, char *argv[]) |
| { |
| int retval; |
| ino_t inode_num; |
| struct ext2_inode inode; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: rm <filename>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| |
| retval = ext2fs_namei(fs, root, cwd, argv[1], &inode_num); |
| if (retval) { |
| com_err(argv[0], 0, "Cannot find file"); |
| return; |
| } |
| |
| retval = ext2fs_read_inode(fs,inode_num,&inode); |
| if (retval) { |
| com_err(argv[0], retval, "while reading file's inode"); |
| return; |
| } |
| |
| if (S_ISDIR(inode.i_mode)) { |
| com_err(argv[0], 0, "file is a directory"); |
| return; |
| } |
| |
| --inode.i_links_count; |
| retval = ext2fs_write_inode(fs,inode_num,&inode); |
| if (retval) { |
| com_err(argv[0], retval, "while writing inode"); |
| return; |
| } |
| |
| unlink_file_by_name(argv[1]); |
| if (inode.i_links_count == 0) |
| kill_file_by_inode(inode_num); |
| } |
| |
| void do_show_debugfs_params(int argc, char *argv[]) |
| { |
| FILE *out = stdout; |
| |
| fprintf(out, "Open mode: read-%s\n", |
| fs->flags & EXT2_FLAG_RW ? "write" : "only"); |
| fprintf(out, "Filesystem in use: %s\n", |
| fs ? fs->device_name : "--none--"); |
| } |
| |
| void do_expand_dir(int argc, char *argv[]) |
| { |
| ino_t inode; |
| int retval; |
| |
| if (argc != 2) { |
| com_err(argv[0], 0, "Usage: expand_dir <file>"); |
| return; |
| } |
| if (check_fs_open(argv[0])) |
| return; |
| inode = string_to_inode(argv[1]); |
| if (!inode) |
| return; |
| |
| retval = ext2fs_expand_dir(fs, inode); |
| if (retval) |
| com_err("ext2fs_expand_dir", retval, ""); |
| return; |
| } |
| |
| void main(int argc, char **argv) |
| { |
| int retval; |
| int sci_idx; |
| char *usage = "Usage: debugfs [[-w] device]"; |
| char c; |
| int open_flags = 0; |
| |
| initialize_ext2_error_table(); |
| |
| while ((c = getopt (argc, argv, "w")) != EOF) { |
| switch (c) { |
| case 'w': |
| open_flags = EXT2_FLAG_RW; |
| break; |
| default: |
| com_err(argv[0], 0, usage); |
| return; |
| } |
| } |
| if (optind < argc) |
| open_filesystem(argv[optind], open_flags); |
| |
| sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL, |
| &debug_cmds, &retval); |
| if (retval) { |
| ss_perror(sci_idx, retval, "creating invocation"); |
| exit(1); |
| } |
| |
| (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval); |
| if (retval) { |
| ss_perror(sci_idx, retval, "adding standard requests"); |
| exit (1); |
| } |
| |
| ss_listen(sci_idx); |
| |
| if (fs) |
| close_filesystem(); |
| |
| exit(0); |
| } |
| |