2 * undelete.c --- routines to try to help a user recover a deleted file.
4 * Copyright (C) 1994 Theodore Ts'o. This file may be redistributed
5 * under the terms of the GNU Public License.
17 #include <sys/types.h>
39 static int deleted_info_compare(const void *a, const void *b)
41 const struct deleted_info *arg1, *arg2;
43 arg1 = (const struct deleted_info *) a;
44 arg2 = (const struct deleted_info *) b;
46 return arg1->dtime - arg2->dtime;
49 static int lsdel_proc(ext2_filsys fs,
54 struct lsdel_struct *lsd = (struct lsdel_struct *) private;
58 if (*block_nr < fs->super->s_first_data_block ||
59 *block_nr >= fs->super->s_blocks_count) {
64 if (!ext2fs_test_block_bitmap(fs->block_map,*block_nr))
70 void do_lsdel(int argc, char **argv)
72 struct lsdel_struct lsd;
73 struct deleted_info *delarray;
74 int num_delarray, max_delarray;
75 ext2_inode_scan scan = 0;
77 struct ext2_inode inode;
83 com_err(argv[0], 0, "Usage: ls_deleted_inodes\n");
86 if (check_fs_open(argv[0]))
91 delarray = malloc(max_delarray * sizeof(struct deleted_info));
93 com_err("ls_deleted_inodes", ENOMEM,
94 "while allocating deleted information storage");
98 block_buf = malloc(current_fs->blocksize * 3);
100 com_err("ls_deleted_inodes", ENOMEM, "while allocating block buffer");
104 retval = ext2fs_open_inode_scan(current_fs, 0, &scan);
106 com_err("ls_deleted_inodes", retval,
107 "while opening inode scan");
112 retval = ext2fs_get_next_inode(scan, &ino, &inode);
113 } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
115 com_err("ls_deleted_inodes", retval,
116 "while starting inode scan");
121 if (inode.i_dtime == 0)
129 retval = ext2fs_block_iterate(current_fs, ino, 0, block_buf,
132 com_err("ls_deleted_inodes", retval,
133 "while calling ext2_block_iterate");
136 if (lsd.free_blocks && !lsd.bad_blocks) {
137 if (num_delarray >= max_delarray) {
139 delarray = realloc(delarray,
140 max_delarray * sizeof(struct deleted_info));
142 com_err("ls_deleted_inodes",
144 "while reallocating array");
149 delarray[num_delarray].ino = ino;
150 delarray[num_delarray].mode = inode.i_mode;
151 delarray[num_delarray].uid = inode.i_uid;
152 delarray[num_delarray].size = inode.i_size;
153 if (!LINUX_S_ISDIR(inode.i_mode))
154 delarray[num_delarray].size |=
155 ((__u64) inode.i_size_high << 32);
156 delarray[num_delarray].dtime = inode.i_dtime;
157 delarray[num_delarray].num_blocks = lsd.num_blocks;
158 delarray[num_delarray].free_blocks = lsd.free_blocks;
164 retval = ext2fs_get_next_inode(scan, &ino, &inode);
165 } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
167 com_err("ls_deleted_inodes", retval,
168 "while doing inode scan");
173 printf("%d deleted inodes found.\n", num_delarray);
174 printf(" Inode Owner Mode Size Blocks Time deleted\n");
176 qsort(delarray, num_delarray, sizeof(struct deleted_info),
177 deleted_info_compare);
179 for (i = 0; i < num_delarray; i++) {
180 printf("%6u %6d %6o %6llu %4d/%4d %s", delarray[i].ino,
181 delarray[i].uid, delarray[i].mode, delarray[i].size,
182 delarray[i].free_blocks, delarray[i].num_blocks,
183 time_to_string(delarray[i].dtime));
190 ext2fs_close_inode_scan(scan);