xref: /freebsd/usr.bin/find/ls.c (revision aa0a1e58)
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  * 4. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 #ifndef lint
31 #if 0
32 static char sccsid[] = "@(#)ls.c	8.1 (Berkeley) 6/6/93";
33 #endif
34 #endif /* not lint */
35 
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38 
39 #include <sys/param.h>
40 #include <sys/stat.h>
41 
42 #include <err.h>
43 #include <errno.h>
44 #include <fts.h>
45 #include <grp.h>
46 #include <inttypes.h>
47 #include <langinfo.h>
48 #include <pwd.h>
49 #include <stdio.h>
50 #include <string.h>
51 #include <time.h>
52 #include <unistd.h>
53 
54 #include "find.h"
55 
56 /* Derived from the print routines in the ls(1) source code. */
57 
58 static void printlink(char *);
59 static void printtime(time_t);
60 
61 void
62 printlong(char *name, char *accpath, struct stat *sb)
63 {
64 	char modep[15];
65 
66 	(void)printf("%6lu %8"PRId64" ", (u_long) sb->st_ino, sb->st_blocks);
67 	(void)strmode(sb->st_mode, modep);
68 	(void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, MAXLOGNAME - 1,
69 	    user_from_uid(sb->st_uid, 0), MAXLOGNAME - 1,
70 	    group_from_gid(sb->st_gid, 0));
71 
72 	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
73 		(void)printf("%3d, %3d ", major(sb->st_rdev),
74 		    minor(sb->st_rdev));
75 	else
76 		(void)printf("%8"PRId64" ", sb->st_size);
77 	printtime(sb->st_mtime);
78 	(void)printf("%s", name);
79 	if (S_ISLNK(sb->st_mode))
80 		printlink(accpath);
81 	(void)putchar('\n');
82 }
83 
84 static void
85 printtime(time_t ftime)
86 {
87 	char longstring[80];
88 	static time_t lnow;
89 	const char *format;
90 	static int d_first = -1;
91 
92 	if (d_first < 0)
93 		d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
94 	if (lnow == 0)
95 		lnow = time(NULL);
96 
97 #define	SIXMONTHS	((365 / 2) * 86400)
98 	if (ftime + SIXMONTHS > lnow && ftime < lnow + SIXMONTHS)
99 		/* mmm dd hh:mm || dd mmm hh:mm */
100 		format = d_first ? "%e %b %R " : "%b %e %R ";
101 	else
102 		/* mmm dd  yyyy || dd mmm  yyyy */
103 		format = d_first ? "%e %b  %Y " : "%b %e  %Y ";
104 	strftime(longstring, sizeof(longstring), format, localtime(&ftime));
105 	fputs(longstring, stdout);
106 }
107 
108 static void
109 printlink(char *name)
110 {
111 	int lnklen;
112 	char path[MAXPATHLEN];
113 
114 	if ((lnklen = readlink(name, path, MAXPATHLEN - 1)) == -1) {
115 		warn("%s", name);
116 		return;
117 	}
118 	path[lnklen] = '\0';
119 	(void)printf(" -> %s", path);
120 }
121