1 /* $OpenBSD: ls.c,v 1.18 2019/02/05 02:17:32 deraadt Exp $ */
2
3 /*
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/stat.h>
33
34 #include <err.h>
35 #include <errno.h>
36 #include <stdio.h>
37 #include <string.h>
38 #include <time.h>
39 #include <unistd.h>
40 #include <limits.h>
41 #include <utmp.h>
42 #include <pwd.h>
43 #include <grp.h>
44 #include <fts.h>
45 #include "find.h"
46 #include "extern.h"
47
48 /* Derived from the print routines in the ls(1) source code. */
49
50 static void printlink(char *);
51 static void printtime(time_t);
52
53 #define NAME_WIDTH 8
54 #define DATELEN 64
55
56 void
printlong(char * name,char * accpath,struct stat * sb)57 printlong(char *name, char *accpath, struct stat *sb)
58 {
59 char modep[15];
60
61 (void)printf("%6llu %4lld ", (unsigned long long)sb->st_ino,
62 (long long)sb->st_blocks);
63 (void)strmode(sb->st_mode, modep);
64 (void)printf("%s %3u %-*.*s %-*.*s ", modep, sb->st_nlink,
65 NAME_WIDTH, UT_NAMESIZE, user_from_uid(sb->st_uid, 0),
66 NAME_WIDTH, UT_NAMESIZE, group_from_gid(sb->st_gid, 0));
67
68 if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
69 (void)printf("%3u, %3u ", major(sb->st_rdev),
70 minor(sb->st_rdev));
71 else
72 (void)printf("%8lld ", (long long)sb->st_size);
73 printtime(sb->st_mtime);
74 (void)printf("%s", name);
75 if (S_ISLNK(sb->st_mode))
76 printlink(accpath);
77 (void)putchar('\n');
78 }
79
80 static void
printtime(time_t ftime)81 printtime(time_t ftime)
82 {
83 char f_date[DATELEN];
84 static time_t now;
85 static int now_set = 0;
86
87 if (! now_set) {
88 now = time(NULL);
89 now_set = 1;
90 }
91
92 /*
93 * convert time to string, and print
94 */
95 if (strftime(f_date, sizeof(f_date),
96 (ftime + SIXMONTHS <= now || ftime > now) ? "%b %e %Y" :
97 "%b %e %H:%M", localtime(&ftime)) == 0)
98 f_date[0] = '\0';
99
100 printf("%s ", f_date);
101 }
102
103 static void
printlink(char * name)104 printlink(char *name)
105 {
106 int lnklen;
107 char path[PATH_MAX];
108
109 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
110 warn("%s", name);
111 return;
112 }
113 path[lnklen] = '\0';
114 (void)printf(" -> %s", path);
115 }
116