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 "config.h"
9 #include <stdio.h>
10 #include <unistd.h>
11 #include <stdlib.h>
12 #include <ctype.h>
13 #include <string.h>
14 #include <time.h>
15 #ifdef HAVE_ERRNO_H
16 #include <errno.h>
17 #endif
18 #include <sys/types.h>
19 #ifdef HAVE_GETOPT_H
20 #include <getopt.h>
21 #else
22 extern int optind;
23 extern char *optarg;
24 #endif
25
26 #include "debugfs.h"
27
28 struct inode_walk_struct {
29 ext2_ino_t dir;
30 ext2_ino_t *iarray;
31 int names_left;
32 int num_inodes;
33 int position;
34 char *parent;
35 unsigned int get_pathname_failed:1;
36 unsigned int check_dirent:1;
37 };
38
ncheck_proc(struct ext2_dir_entry * dirent,int offset EXT2FS_ATTR ((unused)),int blocksize EXT2FS_ATTR ((unused)),char * buf EXT2FS_ATTR ((unused)),void * private)39 static int ncheck_proc(struct ext2_dir_entry *dirent,
40 int offset EXT2FS_ATTR((unused)),
41 int blocksize EXT2FS_ATTR((unused)),
42 char *buf EXT2FS_ATTR((unused)),
43 void *private)
44 {
45 struct inode_walk_struct *iw = (struct inode_walk_struct *) private;
46 struct ext2_inode inode;
47 errcode_t retval;
48 int filetype = ext2fs_dirent_file_type(dirent);
49 int i;
50
51 iw->position++;
52 if (iw->position <= 2)
53 return 0;
54 for (i=0; i < iw->num_inodes; i++) {
55 if (iw->iarray[i] == dirent->inode) {
56 if (!iw->parent && !iw->get_pathname_failed) {
57 retval = ext2fs_get_pathname(current_fs,
58 iw->dir,
59 0, &iw->parent);
60 if (retval) {
61 com_err("ncheck", retval,
62 "while calling ext2fs_get_pathname for inode #%u", iw->dir);
63 iw->get_pathname_failed = 1;
64 }
65 }
66 if (iw->parent)
67 printf("%u\t%s/%.*s", iw->iarray[i],
68 iw->parent,
69 ext2fs_dirent_name_len(dirent),
70 dirent->name);
71 else
72 printf("%u\t<%u>/%.*s", iw->iarray[i],
73 iw->dir,
74 ext2fs_dirent_name_len(dirent),
75 dirent->name);
76 if (iw->check_dirent && filetype) {
77 if (!debugfs_read_inode(dirent->inode, &inode,
78 "ncheck") &&
79 filetype != ext2_file_type(inode.i_mode)) {
80 printf(" <--- BAD FILETYPE");
81 }
82 }
83 putc('\n', stdout);
84 iw->names_left--;
85 }
86 }
87 if (!iw->names_left)
88 return DIRENT_ABORT;
89
90 return 0;
91 }
92
do_ncheck(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))93 void do_ncheck(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
94 void *infop EXT2FS_ATTR((unused)))
95 {
96 struct inode_walk_struct iw;
97 int c, i;
98 ext2_inode_scan scan = 0;
99 ext2_ino_t ino;
100 struct ext2_inode inode;
101 errcode_t retval;
102 char *tmp;
103
104 iw.check_dirent = 0;
105
106 reset_getopt();
107 while ((c = getopt (argc, argv, "c")) != EOF) {
108 switch (c) {
109 case 'c':
110 iw.check_dirent = 1;
111 break;
112 default:
113 goto print_usage;
114 }
115 }
116
117 if (argc <= 1) {
118 print_usage:
119 com_err(argv[0], 0, "Usage: ncheck [-c] <inode number> ...");
120 return;
121 }
122 if (check_fs_open(argv[0]))
123 return;
124
125 argc -= optind;
126 argv += optind;
127 iw.iarray = malloc(sizeof(ext2_ino_t) * argc);
128 if (!iw.iarray) {
129 com_err("ncheck", ENOMEM,
130 "while allocating inode number array");
131 return;
132 }
133 memset(iw.iarray, 0, sizeof(ext2_ino_t) * argc);
134
135 iw.names_left = 0;
136 for (i=0; i < argc; i++) {
137 iw.iarray[i] = strtol(argv[i], &tmp, 0);
138 if (*tmp) {
139 com_err("ncheck", 0, "Bad inode - %s", argv[i]);
140 goto error_out;
141 }
142 if (debugfs_read_inode(iw.iarray[i], &inode, *argv))
143 goto error_out;
144 if (LINUX_S_ISDIR(inode.i_mode))
145 iw.names_left += 1;
146 else
147 iw.names_left += inode.i_links_count;
148 }
149
150 iw.num_inodes = argc;
151
152 retval = ext2fs_open_inode_scan(current_fs, 0, &scan);
153 if (retval) {
154 com_err("ncheck", retval, "while opening inode scan");
155 goto error_out;
156 }
157
158 do {
159 retval = ext2fs_get_next_inode(scan, &ino, &inode);
160 } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
161 if (retval) {
162 com_err("ncheck", retval, "while starting inode scan");
163 goto error_out;
164 }
165
166 printf("Inode\tPathname\n");
167 while (ino) {
168 if (!inode.i_links_count)
169 goto next;
170 /*
171 * To handle filesystems touched by 0.3c extfs; can be
172 * removed later.
173 */
174 if (inode.i_dtime)
175 goto next;
176 /* Ignore anything that isn't a directory */
177 if (!LINUX_S_ISDIR(inode.i_mode))
178 goto next;
179
180 iw.position = 0;
181 iw.parent = 0;
182 iw.dir = ino;
183 iw.get_pathname_failed = 0;
184
185 retval = ext2fs_dir_iterate(current_fs, ino, 0, 0,
186 ncheck_proc, &iw);
187 ext2fs_free_mem(&iw.parent);
188 if (retval) {
189 com_err("ncheck", retval,
190 "while calling ext2_dir_iterate");
191 goto next;
192 }
193
194 if (iw.names_left == 0)
195 break;
196
197 next:
198 do {
199 retval = ext2fs_get_next_inode(scan, &ino, &inode);
200 } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
201
202 if (retval) {
203 com_err("ncheck", retval,
204 "while doing inode scan");
205 goto error_out;
206 }
207 }
208
209 error_out:
210 free(iw.iarray);
211 if (scan)
212 ext2fs_close_inode_scan(scan);
213 return;
214 }
215
216
217
218