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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
21 extern int optind;
22 extern 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 
35 struct list_dir_struct {
36 	FILE	*f;
37 	int	col;
38 	int	options;
39 };
40 
41 static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
42 				"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
43 
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)44 static 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 
do_list_dir(int argc,char * argv[])124 void 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