xref: /freebsd/usr.bin/find/ls.c (revision 9336e0699bda8a301cd2bfa37106b6ec5e32012e)
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 
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
42 
43 #include <sys/param.h>
44 #include <sys/stat.h>
45 
46 #include <err.h>
47 #include <errno.h>
48 #include <fts.h>
49 #include <grp.h>
50 #include <inttypes.h>
51 #include <langinfo.h>
52 #include <pwd.h>
53 #include <stdio.h>
54 #include <string.h>
55 #include <time.h>
56 #include <unistd.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(char *name, char *accpath, struct stat *sb)
67 {
68 	char modep[15];
69 
70 	(void)printf("%6lu %8"PRId64" ", (u_long) sb->st_ino, sb->st_blocks);
71 	(void)strmode(sb->st_mode, modep);
72 	(void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, MAXLOGNAME - 1,
73 	    user_from_uid(sb->st_uid, 0), MAXLOGNAME - 1,
74 	    group_from_gid(sb->st_gid, 0));
75 
76 	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
77 		(void)printf("%3d, %3d ", major(sb->st_rdev),
78 		    minor(sb->st_rdev));
79 	else
80 		(void)printf("%8"PRId64" ", sb->st_size);
81 	printtime(sb->st_mtime);
82 	(void)printf("%s", name);
83 	if (S_ISLNK(sb->st_mode))
84 		printlink(accpath);
85 	(void)putchar('\n');
86 }
87 
88 static void
89 printtime(time_t ftime)
90 {
91 	char longstring[80];
92 	static time_t lnow;
93 	const char *format;
94 	static int d_first = -1;
95 
96 	if (d_first < 0)
97 		d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
98 	if (lnow == 0)
99 		lnow = time(NULL);
100 
101 #define	SIXMONTHS	((365 / 2) * 86400)
102 	if (ftime + SIXMONTHS > lnow && ftime < lnow + SIXMONTHS)
103 		/* mmm dd hh:mm || dd mmm hh:mm */
104 		format = d_first ? "%e %b %R " : "%b %e %R ";
105 	else
106 		/* mmm dd  yyyy || dd mmm  yyyy */
107 		format = d_first ? "%e %b  %Y " : "%b %e  %Y ";
108 	strftime(longstring, sizeof(longstring), format, localtime(&ftime));
109 	fputs(longstring, stdout);
110 }
111 
112 static void
113 printlink(char *name)
114 {
115 	int lnklen;
116 	char path[MAXPATHLEN];
117 
118 	if ((lnklen = readlink(name, path, MAXPATHLEN - 1)) == -1) {
119 		warn("%s", name);
120 		return;
121 	}
122 	path[lnklen] = '\0';
123 	(void)printf(" -> %s", path);
124 }
125