ls.c revision d352f838e8d16e7cda52d3b57cd31d4582937a13 
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
22extern int optind;
23extern char *optarg;
24#endif
25
26#include "debugfs.h"
27
28/*
29 * list directory
30 */
31
32#define LONG_OPT	0x0001
33#define DELETED_OPT	0x0002
34#define PARSE_OPT	0x0004
35
36struct list_dir_struct {
37	FILE	*f;
38	int	col;
39	int	options;
40};
41
42static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
43				"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
44
45static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
46			 int	entry,
47			 struct ext2_dir_entry *dirent,
48			 int	offset EXT2FS_ATTR((unused)),
49			 int	blocksize EXT2FS_ATTR((unused)),
50			 char	*buf EXT2FS_ATTR((unused)),
51			 void	*private)
52{
53	struct ext2_inode	inode;
54	ext2_ino_t		ino;
55	struct tm		*tm_p;
56	time_t			modtime;
57	char			name[EXT2_NAME_LEN + 1];
58	char			tmp[EXT2_NAME_LEN + 16];
59	char			datestr[80];
60	char			lbr, rbr;
61	int			thislen;
62	struct list_dir_struct *ls = (struct list_dir_struct *) private;
63
64	thislen = dirent->name_len & 0xFF;
65	strncpy(name, dirent->name, thislen);
66	name[thislen] = '\0';
67	ino = dirent->inode;
68
69	if (entry == DIRENT_DELETED_FILE) {
70		lbr = '<';
71		rbr = '>';
72		ino = 0;
73	} else {
74		lbr = rbr = ' ';
75	}
76	if (ls->options & PARSE_OPT) {
77		if (ino) {
78			if (debugfs_read_inode(ino, &inode, name))
79				return 0;
80		} else
81			memset(&inode, 0, sizeof(struct ext2_inode));
82		fprintf(ls->f,"/%u/%06o/%d/%d/%s/",ino,inode.i_mode,inode.i_uid, inode.i_gid,name);
83		if (LINUX_S_ISDIR(inode.i_mode))
84			fprintf(ls->f, "/");
85		else
86			fprintf(ls->f, "%lld/", EXT2_I_SIZE(&inode));
87		fprintf(ls->f, "\n");
88	} else if (ls->options & LONG_OPT) {
89		if (ino) {
90			if (debugfs_read_inode(ino, &inode, name))
91				return 0;
92			modtime = inode.i_mtime;
93			tm_p = localtime(&modtime);
94			sprintf(datestr, "%2d-%s-%4d %02d:%02d",
95				tm_p->tm_mday, monstr[tm_p->tm_mon],
96				1900 + tm_p->tm_year, tm_p->tm_hour,
97				tm_p->tm_min);
98		} else {
99			strcpy(datestr, "                 ");
100			memset(&inode, 0, sizeof(struct ext2_inode));
101		}
102		fprintf(ls->f, "%c%6u%c %6o (%d)  %5d  %5d   ", lbr, ino, rbr,
103			inode.i_mode, dirent->name_len >> 8,
104			inode_uid(inode), inode_gid(inode));
105		if (LINUX_S_ISDIR(inode.i_mode))
106			fprintf(ls->f, "%5d", inode.i_size);
107		else
108			fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode));
109		fprintf (ls->f, " %s %s\n", datestr, name);
110	} else {
111		sprintf(tmp, "%c%u%c (%d) %s   ", lbr, dirent->inode, rbr,
112			dirent->rec_len, name);
113		thislen = strlen(tmp);
114
115		if (ls->col + thislen > 80) {
116			fprintf(ls->f, "\n");
117			ls->col = 0;
118		}
119		fprintf(ls->f, "%s", tmp);
120		ls->col += thislen;
121	}
122	return 0;
123}
124
125void do_list_dir(int argc, char *argv[])
126{
127	ext2_ino_t	inode;
128	int		retval;
129	int		c;
130	int		flags;
131	struct list_dir_struct ls;
132
133	ls.options = 0;
134	if (check_fs_open(argv[0]))
135		return;
136
137	reset_getopt();
138	while ((c = getopt (argc, argv, "dlp")) != EOF) {
139		switch (c) {
140		case 'l':
141			ls.options |= LONG_OPT;
142			break;
143		case 'd':
144			ls.options |= DELETED_OPT;
145			break;
146		case 'p':
147			ls.options |= PARSE_OPT;
148			break;
149		default:
150			goto print_usage;
151		}
152	}
153
154	if (argc > optind+1) {
155	print_usage:
156		com_err(0, 0, "Usage: ls [-l] [-d] [-p] file");
157		return;
158	}
159
160	if (argc == optind)
161		inode = cwd;
162	else
163		inode = string_to_inode(argv[optind]);
164	if (!inode)
165		return;
166
167	ls.f = open_pager();
168	ls.col = 0;
169	flags = DIRENT_FLAG_INCLUDE_EMPTY;
170	if (ls.options & DELETED_OPT)
171		flags |= DIRENT_FLAG_INCLUDE_REMOVED;
172
173	retval = ext2fs_dir_iterate2(current_fs, inode, flags,
174				    0, list_dir_proc, &ls);
175	fprintf(ls.f, "\n");
176	close_pager(ls.f);
177	if (retval)
178		com_err(argv[1], retval, 0);
179
180	return;
181}
182
183
184