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 <stdio.h>
9#include <unistd.h>
10#include <stdlib.h>
11#include <ctype.h>
12#include <string.h>
13#include <time.h>
14#ifdef HAVE_ERRNO_H
15#include <errno.h>
16#endif
17#include <sys/types.h>
18#ifdef HAVE_GETOPT_H
19#include <getopt.h>
20#else
21extern int optind;
22extern char *optarg;
23#endif
24
25#include "debugfs.h"
26
27/*
28 * list directory
29 */
30
31#define LONG_OPT	0x0001
32#define DELETED_OPT	0x0002
33#define PARSE_OPT	0x0004
34
35struct list_dir_struct {
36	FILE	*f;
37	int	col;
38	int	options;
39};
40
41static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
42				"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
43
44static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
45			 int	entry,
46			 struct ext2_dir_entry *dirent,
47			 int	offset EXT2FS_ATTR((unused)),
48			 int	blocksize EXT2FS_ATTR((unused)),
49			 char	*buf EXT2FS_ATTR((unused)),
50			 void	*private)
51{
52	struct ext2_inode	inode;
53	ext2_ino_t		ino;
54	struct tm		*tm_p;
55	time_t			modtime;
56	char			name[EXT2_NAME_LEN + 1];
57	char			tmp[EXT2_NAME_LEN + 16];
58	char			datestr[80];
59	char			lbr, rbr;
60	int			thislen;
61	struct list_dir_struct *ls = (struct list_dir_struct *) private;
62
63	thislen = dirent->name_len & 0xFF;
64	strncpy(name, dirent->name, thislen);
65	name[thislen] = '\0';
66	ino = dirent->inode;
67
68	if (entry == DIRENT_DELETED_FILE) {
69		lbr = '<';
70		rbr = '>';
71		ino = 0;
72	} else {
73		lbr = rbr = ' ';
74	}
75	if (ls->options & PARSE_OPT) {
76		if (ino) {
77			if (debugfs_read_inode(ino, &inode, name))
78				return 0;
79		} else
80			memset(&inode, 0, sizeof(struct ext2_inode));
81		fprintf(ls->f,"/%u/%06o/%d/%d/%s/",ino,inode.i_mode,inode.i_uid, inode.i_gid,name);
82		if (LINUX_S_ISDIR(inode.i_mode))
83			fprintf(ls->f, "/");
84		else
85			fprintf(ls->f, "%lld/", EXT2_I_SIZE(&inode));
86		fprintf(ls->f, "\n");
87	} else if (ls->options & LONG_OPT) {
88		if (ino) {
89			if (debugfs_read_inode(ino, &inode, name))
90				return 0;
91			modtime = inode.i_mtime;
92			tm_p = localtime(&modtime);
93			sprintf(datestr, "%2d-%s-%4d %02d:%02d",
94				tm_p->tm_mday, monstr[tm_p->tm_mon],
95				1900 + tm_p->tm_year, tm_p->tm_hour,
96				tm_p->tm_min);
97		} else {
98			strcpy(datestr, "                 ");
99			memset(&inode, 0, sizeof(struct ext2_inode));
100		}
101		fprintf(ls->f, "%c%6u%c %6o (%d)  %5d  %5d   ", lbr, ino, rbr,
102			inode.i_mode, dirent->name_len >> 8,
103			inode_uid(inode), inode_gid(inode));
104		if (LINUX_S_ISDIR(inode.i_mode))
105			fprintf(ls->f, "%5d", inode.i_size);
106		else
107			fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode));
108		fprintf (ls->f, " %s %s\n", datestr, name);
109	} else {
110		sprintf(tmp, "%c%u%c (%d) %s   ", lbr, dirent->inode, rbr,
111			dirent->rec_len, name);
112		thislen = strlen(tmp);
113
114		if (ls->col + thislen > 80) {
115			fprintf(ls->f, "\n");
116			ls->col = 0;
117		}
118		fprintf(ls->f, "%s", tmp);
119		ls->col += thislen;
120	}
121	return 0;
122}
123
124void do_list_dir(int argc, char *argv[])
125{
126	ext2_ino_t	inode;
127	int		retval;
128	int		c;
129	int		flags;
130	struct list_dir_struct ls;
131
132	ls.options = 0;
133	if (check_fs_open(argv[0]))
134		return;
135
136	reset_getopt();
137	while ((c = getopt (argc, argv, "dlp")) != EOF) {
138		switch (c) {
139		case 'l':
140			ls.options |= LONG_OPT;
141			break;
142		case 'd':
143			ls.options |= DELETED_OPT;
144			break;
145		case 'p':
146			ls.options |= PARSE_OPT;
147			break;
148		default:
149			goto print_usage;
150		}
151	}
152
153	if (argc > optind+1) {
154	print_usage:
155		com_err(0, 0, "Usage: ls [-l] [-d] [-p] file");
156		return;
157	}
158
159	if (argc == optind)
160		inode = cwd;
161	else
162		inode = string_to_inode(argv[optind]);
163	if (!inode)
164		return;
165
166	ls.f = open_pager();
167	ls.col = 0;
168	flags = DIRENT_FLAG_INCLUDE_EMPTY;
169	if (ls.options & DELETED_OPT)
170		flags |= DIRENT_FLAG_INCLUDE_REMOVED;
171
172	retval = ext2fs_dir_iterate2(current_fs, inode, flags,
173				    0, list_dir_proc, &ls);
174	fprintf(ls.f, "\n");
175	close_pager(ls.f);
176	if (retval)
177		com_err(argv[1], retval, 0);
178
179	return;
180}
181
182
183