1 /*
2 * ls.c --- list directories
3 *
4 * Copyright (C) 1997 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 /*
29 * list directory
30 */
31
32 #define LONG_OPT 0x0001
33 #define PARSE_OPT 0x0002
34 #define RAW_OPT 0x0004
35 #define ENCRYPT_OPT 0x8000
36
37 struct list_dir_struct {
38 FILE *f;
39 int col;
40 int options;
41 int state;
42 };
43
44 static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
45 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
46
print_filename(FILE * f,struct ext2_dir_entry * dirent,int options)47 static int print_filename(FILE *f, struct ext2_dir_entry *dirent, int options)
48 {
49 unsigned char ch;
50 const char *cp = dirent->name;
51 int len = ext2fs_dirent_name_len(dirent);
52 int retlen = 0;
53
54 if ((options & ENCRYPT_OPT) && !(options & RAW_OPT)) {
55 if (f)
56 return fprintf(f, "<encrypted (%d)>", len);
57 else {
58 char tmp[1];
59 return snprintf(tmp, sizeof(tmp),
60 "<encrypted (%d)>", len);
61 }
62 }
63 while (len--) {
64 ch = *cp++;
65 if (ch > 128) {
66 if (f)
67 fputs("M-", f);
68 ch -= 128;
69 retlen += 2;
70 }
71 if ((ch < 32) || (ch == 0x7f)) {
72 if (f)
73 fputc('^', f);
74 ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */
75 retlen++;
76 }
77 if (f)
78 fputc(ch, f);
79 retlen++;
80 }
81 return retlen;
82 }
83
list_dir_proc(ext2_ino_t dir EXT2FS_ATTR ((unused)),int entry,struct ext2_dir_entry * dirent,int offset EXT2FS_ATTR ((unused)),int blocksize EXT2FS_ATTR ((unused)),char * buf EXT2FS_ATTR ((unused)),void * private)84 static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
85 int entry,
86 struct ext2_dir_entry *dirent,
87 int offset EXT2FS_ATTR((unused)),
88 int blocksize EXT2FS_ATTR((unused)),
89 char *buf EXT2FS_ATTR((unused)),
90 void *private)
91 {
92 struct ext2_inode inode;
93 ext2_ino_t ino;
94 struct tm *tm_p;
95 time_t modtime;
96 char tmp[EXT2_NAME_LEN + 16];
97 char datestr[80];
98 char lbr, rbr;
99 int thislen;
100 int options;
101 struct list_dir_struct *ls = (struct list_dir_struct *) private;
102 struct ext2_dir_entry_tail *t = (struct ext2_dir_entry_tail *) dirent;
103
104 thislen = ext2fs_dirent_name_len(dirent);
105 ino = dirent->inode;
106 options = ls->options;
107 if (ls->state < 2) {
108 ls->state++;
109 options |= RAW_OPT;
110 }
111
112 if (entry == DIRENT_DELETED_FILE) {
113 lbr = '<';
114 rbr = '>';
115 ino = 0;
116 } else {
117 lbr = rbr = ' ';
118 }
119 if (options & PARSE_OPT) {
120 if (ino) {
121 if (debugfs_read_inode(ino, &inode, "ls"))
122 return 0;
123 } else
124 memset(&inode, 0, sizeof(struct ext2_inode));
125 fprintf(ls->f,"/%u/%06o/%d/%d/%*s/", ino, inode.i_mode,
126 inode.i_uid, inode.i_gid, thislen, dirent->name);
127 if (LINUX_S_ISDIR(inode.i_mode))
128 fprintf(ls->f, "/");
129 else
130 fprintf(ls->f, "%lld/", EXT2_I_SIZE(&inode));
131 fprintf(ls->f, "\n");
132 } else if (options & LONG_OPT) {
133 if (ino) {
134 if (debugfs_read_inode(ino, &inode, "ls"))
135 return 0;
136 modtime = inode.i_mtime;
137 tm_p = localtime(&modtime);
138 sprintf(datestr, "%2d-%s-%4d %02d:%02d",
139 tm_p->tm_mday, monstr[tm_p->tm_mon],
140 1900 + tm_p->tm_year, tm_p->tm_hour,
141 tm_p->tm_min);
142 } else {
143 strcpy(datestr, " ");
144 memset(&inode, 0, sizeof(struct ext2_inode));
145 }
146 fprintf(ls->f, "%c%6u%c %6o ", lbr, ino, rbr, inode.i_mode);
147 if (entry == DIRENT_CHECKSUM) {
148 fprintf(ls->f, "(dirblock checksum: 0x%08x)\n",
149 t->det_checksum);
150 return 0;
151 }
152 fprintf(ls->f, "(%d) %5d %5d ",
153 ext2fs_dirent_file_type(dirent),
154 inode_uid(inode), inode_gid(inode));
155 if (LINUX_S_ISDIR(inode.i_mode))
156 fprintf(ls->f, "%5d", inode.i_size);
157 else
158 fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode));
159 fputs(datestr, ls->f);
160 fputc(' ', ls->f);
161 print_filename(ls->f, dirent, options);
162 fputc('\n', ls->f);
163 } else {
164 if (entry == DIRENT_CHECKSUM) {
165 sprintf(tmp, "%c%u%c (dirblock checksum: 0x%08x) ",
166 lbr, dirent->inode, rbr, t->det_checksum);
167 thislen = strlen(tmp);
168 if (ls->col + thislen > 80) {
169 fputc('\n', ls->f);
170 ls->col = 0;
171 }
172 fprintf(ls->f, "%s", tmp);
173 ls->col += thislen;
174 return 0;
175 }
176 sprintf(tmp, "%c%u%c (%d) ", lbr, dirent->inode, rbr,
177 dirent->rec_len);
178 thislen = strlen(tmp) + 3;
179 thislen += print_filename(NULL, dirent, options);
180
181 if (ls->col + thislen > 80) {
182 fputc('\n', ls->f);
183 ls->col = 0;
184 }
185 fprintf(ls->f, "%s", tmp);
186 print_filename(ls->f, dirent, options);
187 fputs(" ", ls->f);
188 ls->col += thislen;
189 }
190 return 0;
191 }
192
do_list_dir(int argc,char * argv[])193 void do_list_dir(int argc, char *argv[])
194 {
195 struct ext2_inode inode;
196 ext2_ino_t ino;
197 int retval;
198 int c;
199 int flags = DIRENT_FLAG_INCLUDE_EMPTY;
200 struct list_dir_struct ls;
201
202 ls.options = 0;
203 ls.state = 0;
204 if (check_fs_open(argv[0]))
205 return;
206
207 reset_getopt();
208 while ((c = getopt (argc, argv, "cdlpr")) != EOF) {
209 switch (c) {
210 case 'c':
211 flags |= DIRENT_FLAG_INCLUDE_CSUM;
212 break;
213 case 'l':
214 ls.options |= LONG_OPT;
215 break;
216 case 'd':
217 flags |= DIRENT_FLAG_INCLUDE_REMOVED;
218 break;
219 case 'p':
220 ls.options |= PARSE_OPT;
221 break;
222 case 'r':
223 ls.options |= RAW_OPT;
224 break;
225 default:
226 goto print_usage;
227 }
228 }
229
230 if (argc > optind+1) {
231 print_usage:
232 com_err(0, 0, "Usage: ls [-l] [-d] [-p] file");
233 return;
234 }
235
236 if (argc == optind)
237 ino = cwd;
238 else
239 ino = string_to_inode(argv[optind]);
240 if (!ino)
241 return;
242
243 ls.f = open_pager();
244 ls.col = 0;
245
246 if (debugfs_read_inode(ino, &inode, argv[0]))
247 return;
248
249 if (inode.i_flags & EXT4_ENCRYPT_FL)
250 ls.options |= ENCRYPT_OPT;
251
252 retval = ext2fs_dir_iterate2(current_fs, ino, flags,
253 0, list_dir_proc, &ls);
254 fprintf(ls.f, "\n");
255 close_pager(ls.f);
256 if (retval)
257 com_err(argv[1], retval, 0);
258
259 return;
260 }
261
262
263