1 /*
2 * ncheck.c --- given a list of inodes, generate a list of names
3 *
4 * Copyright (C) 1994 Theodore Ts'o. This file may be redistributed
5 * under the terms of the GNU Public License.
6 */
7
8 #include <stdio.h>
9 #include <unistd.h>
10 #include <stdlib.h>
11 #include <ctype.h>
12 #include <string.h>
13 #include <time.h>
14 #ifdef HAVE_ERRNO_H
15 #include <errno.h>
16 #endif
17 #include <sys/types.h>
18
19 #include "debugfs.h"
20
21 struct inode_walk_struct {
22 ext2_ino_t *iarray;
23 int inodes_left;
24 int num_inodes;
25 int position;
26 char *parent;
27 };
28
ncheck_proc(struct ext2_dir_entry * dirent,int offset EXT2FS_ATTR ((unused)),int blocksize EXT2FS_ATTR ((unused)),char * buf EXT2FS_ATTR ((unused)),void * private)29 static int ncheck_proc(struct ext2_dir_entry *dirent,
30 int offset EXT2FS_ATTR((unused)),
31 int blocksize EXT2FS_ATTR((unused)),
32 char *buf EXT2FS_ATTR((unused)),
33 void *private)
34 {
35 struct inode_walk_struct *iw = (struct inode_walk_struct *) private;
36 int i;
37
38 iw->position++;
39 if (iw->position <= 2)
40 return 0;
41 for (i=0; i < iw->num_inodes; i++) {
42 if (iw->iarray[i] == dirent->inode) {
43 printf("%u\t%s/%.*s\n", iw->iarray[i], iw->parent,
44 (dirent->name_len & 0xFF), dirent->name);
45 }
46 }
47 if (!iw->inodes_left)
48 return DIRENT_ABORT;
49
50 return 0;
51 }
52
do_ncheck(int argc,char ** argv)53 void do_ncheck(int argc, char **argv)
54 {
55 struct inode_walk_struct iw;
56 int i;
57 ext2_inode_scan scan = 0;
58 ext2_ino_t ino;
59 struct ext2_inode inode;
60 errcode_t retval;
61 char *tmp;
62
63 if (argc < 2) {
64 com_err(argv[0], 0, "Usage: ncheck <inode number> ...");
65 return;
66 }
67 if (check_fs_open(argv[0]))
68 return;
69
70 iw.iarray = malloc(sizeof(ext2_ino_t) * argc);
71 if (!iw.iarray) {
72 com_err("ncheck", ENOMEM,
73 "while allocating inode info array");
74 return;
75 }
76 memset(iw.iarray, 0, sizeof(ext2_ino_t) * argc);
77
78 for (i=1; i < argc; i++) {
79 iw.iarray[i-1] = strtol(argv[i], &tmp, 0);
80 if (*tmp) {
81 com_err(argv[0], 0, "Bad inode - %s", argv[i]);
82 goto error_out;
83 }
84 }
85
86 iw.num_inodes = iw.inodes_left = argc-1;
87
88 retval = ext2fs_open_inode_scan(current_fs, 0, &scan);
89 if (retval) {
90 com_err("ncheck", retval, "while opening inode scan");
91 goto error_out;
92 }
93
94 do {
95 retval = ext2fs_get_next_inode(scan, &ino, &inode);
96 } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
97 if (retval) {
98 com_err("ncheck", retval, "while starting inode scan");
99 goto error_out;
100 }
101
102 printf("Inode\tPathname\n");
103 while (ino) {
104 if (!inode.i_links_count)
105 goto next;
106 /*
107 * To handle filesystems touched by 0.3c extfs; can be
108 * removed later.
109 */
110 if (inode.i_dtime)
111 goto next;
112 /* Ignore anything that isn't a directory */
113 if (!LINUX_S_ISDIR(inode.i_mode))
114 goto next;
115
116 iw.position = 0;
117
118 retval = ext2fs_get_pathname(current_fs, ino, 0, &iw.parent);
119 if (retval) {
120 com_err("ncheck", retval,
121 "while calling ext2fs_get_pathname");
122 goto next;
123 }
124
125 retval = ext2fs_dir_iterate(current_fs, ino, 0, 0,
126 ncheck_proc, &iw);
127 ext2fs_free_mem(&iw.parent);
128 if (retval) {
129 com_err("ncheck", retval,
130 "while calling ext2_dir_iterate");
131 goto next;
132 }
133
134 if (iw.inodes_left == 0)
135 break;
136
137 next:
138 do {
139 retval = ext2fs_get_next_inode(scan, &ino, &inode);
140 } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
141
142 if (retval) {
143 com_err("ncheck", retval,
144 "while doing inode scan");
145 goto error_out;
146 }
147 }
148
149 error_out:
150 free(iw.iarray);
151 if (scan)
152 ext2fs_close_inode_scan(scan);
153 return;
154 }
155
156
157
158