xref: /freebsd/usr.bin/find/ls.c (revision 3ff369fed2a08f32dda232c10470b949bef9489f)
1 /*
2  * Copyright (c) 1989, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #ifndef lint
35 #if 0
36 static char sccsid[] = "@(#)ls.c	8.1 (Berkeley) 6/6/93";
37 #endif
38 #endif /* not lint */
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
41 
42 #include <sys/param.h>
43 #include <sys/stat.h>
44 
45 #include <inttypes.h>
46 #include <err.h>
47 #include <errno.h>
48 #include <fts.h>
49 #include <grp.h>
50 #include <langinfo.h>
51 #include <pwd.h>
52 #include <stdio.h>
53 #include <string.h>
54 #include <time.h>
55 #include <unistd.h>
56 #include <utmp.h>
57 
58 #include "find.h"
59 
60 /* Derived from the print routines in the ls(1) source code. */
61 
62 static void printlink(char *);
63 static void printtime(time_t);
64 
65 void
66 printlong(name, accpath, sb)
67 	char *name;			/* filename to print */
68 	char *accpath;			/* current valid path to filename */
69 	struct stat *sb;		/* stat buffer */
70 {
71 	char modep[15];
72 
73 	(void)printf("%6lu %4"PRId64" ", (u_long) sb->st_ino, sb->st_blocks);
74 	(void)strmode(sb->st_mode, modep);
75 	(void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, UT_NAMESIZE,
76 	    user_from_uid(sb->st_uid, 0), UT_NAMESIZE,
77 	    group_from_gid(sb->st_gid, 0));
78 
79 	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
80 		(void)printf("%3d, %3d ", major(sb->st_rdev),
81 		    minor(sb->st_rdev));
82 	else
83 		(void)printf("%8"PRId64" ", sb->st_size);
84 	printtime(sb->st_mtime);
85 	(void)printf("%s", name);
86 	if (S_ISLNK(sb->st_mode))
87 		printlink(accpath);
88 	(void)putchar('\n');
89 }
90 
91 static void
92 printtime(ftime)
93 	time_t ftime;
94 {
95 	char longstring[80];
96 	static time_t now;
97 	const char *format;
98 	static int d_first = -1;
99 
100 	if (d_first < 0)
101 		d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
102 	if (now == 0)
103 		now = time(NULL);
104 
105 #define	SIXMONTHS	((365 / 2) * 86400)
106 	if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS)
107 		/* mmm dd hh:mm || dd mmm hh:mm */
108 		format = d_first ? "%e %b %R " : "%b %e %R ";
109 	else
110 		/* mmm dd  yyyy || dd mmm  yyyy */
111 		format = d_first ? "%e %b  %Y " : "%b %e  %Y ";
112 	strftime(longstring, sizeof(longstring), format, localtime(&ftime));
113 	fputs(longstring, stdout);
114 }
115 
116 static void
117 printlink(name)
118 	char *name;
119 {
120 	int lnklen;
121 	char path[MAXPATHLEN];
122 
123 	if ((lnklen = readlink(name, path, MAXPATHLEN - 1)) == -1) {
124 		warn("%s", name);
125 		return;
126 	}
127 	path[lnklen] = '\0';
128 	(void)printf(" -> %s", path);
129 }
130