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