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 char *str = argv[i];
138 int len = strlen(str);
139
140 if ((len > 2) && (str[0] == '<') && (str[len - 1] == '>'))
141 str++;
142 iw.iarray[i] = strtol(str, &tmp, 0);
143 if (*tmp && (str == argv[i] || *tmp != '>')) {
144 com_err("ncheck", 0, "Invalid inode number - '%s'",
145 argv[i]);
146 goto error_out;
147 }
148 if (debugfs_read_inode(iw.iarray[i], &inode, *argv))
149 goto error_out;
150 if (LINUX_S_ISDIR(inode.i_mode))
151 iw.names_left += 1;
152 else
153 iw.names_left += inode.i_links_count;
154 }
155
156 iw.num_inodes = argc;
157
158 retval = ext2fs_open_inode_scan(current_fs, 0, &scan);
159 if (retval) {
160 com_err("ncheck", retval, "while opening inode scan");
161 goto error_out;
162 }
163
164 do {
165 retval = ext2fs_get_next_inode(scan, &ino, &inode);
166 } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
167 if (retval) {
168 com_err("ncheck", retval, "while starting inode scan");
169 goto error_out;
170 }
171
172 printf("Inode\tPathname\n");
173 while (ino) {
174 if (!inode.i_links_count)
175 goto next;
176 /*
177 * To handle filesystems touched by 0.3c extfs; can be
178 * removed later.
179 */
180 if (inode.i_dtime)
181 goto next;
182 /* Ignore anything that isn't a directory */
183 if (!LINUX_S_ISDIR(inode.i_mode))
184 goto next;
185
186 iw.position = 0;
187 iw.parent = 0;
188 iw.dir = ino;
189 iw.get_pathname_failed = 0;
190
191 retval = ext2fs_dir_iterate(current_fs, ino, 0, 0,
192 ncheck_proc, &iw);
193 ext2fs_free_mem(&iw.parent);
194 if (retval) {
195 com_err("ncheck", retval,
196 "while calling ext2_dir_iterate");
197 goto next;
198 }
199
200 if (iw.names_left == 0)
201 break;
202
203 next:
204 do {
205 retval = ext2fs_get_next_inode(scan, &ino, &inode);
206 } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
207
208 if (retval) {
209 com_err("ncheck", retval,
210 "while doing inode scan");
211 goto error_out;
212 }
213 }
214
215 error_out:
216 free(iw.iarray);
217 if (scan)
218 ext2fs_close_inode_scan(scan);
219 return;
220 }
221
222
223
224