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ls.c revision 1.11 
      1 /*	$NetBSD: ls.c,v 1.11 1998/10/14 00:50:59 wsanchez 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "from: @(#)ls.c	8.1 (Berkeley) 6/6/93";
     40 #else
     41 __RCSID("$NetBSD: ls.c,v 1.11 1998/10/14 00:50:59 wsanchez Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <sys/param.h>
     46 #include <sys/stat.h>
     47 
     48 #include <err.h>
     49 #include <errno.h>
     50 #include <fts.h>
     51 #include <grp.h>
     52 #include <pwd.h>
     53 #include <stdio.h>
     54 #include <stdlib.h>
     55 #include <string.h>
     56 #include <time.h>
     57 #include <tzfile.h>
     58 #include <unistd.h>
     59 #include <utmp.h>
     60 
     61 #include "find.h"
     62 
     63 /* Derived from the print routines in the ls(1) source code. */
     64 
     65 static void printlink __P((char *));
     66 static void printtime __P((time_t));
     67 
     68 void
     69 printlong(name, accpath, sb)
     70 	char *name;			/* filename to print */
     71 	char *accpath;			/* current valid path to filename */
     72 	struct stat *sb;		/* stat buffer */
     73 {
     74 	char modep[15];
     75 
     76 	(void)printf("%6lu %4qd ", (u_long)sb->st_ino,
     77 	    (long long)sb->st_blocks);
     78 	(void)strmode(sb->st_mode, modep);
     79 	(void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, UT_NAMESIZE,
     80 	    user_from_uid(sb->st_uid, 0), UT_NAMESIZE,
     81 	    group_from_gid(sb->st_gid, 0));
     82 
     83 	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
     84 		(void)printf("%3d, %3d ", major(sb->st_rdev),
     85 		    minor(sb->st_rdev));
     86 	else
     87 		(void)printf("%8qd ", (long long)sb->st_size);
     88 	printtime(sb->st_mtime);
     89 	(void)printf("%s", name);
     90 	if (S_ISLNK(sb->st_mode))
     91 		printlink(accpath);
     92 	(void)putchar('\n');
     93 }
     94 
     95 static void
     96 printtime(ftime)
     97 	time_t ftime;
     98 {
     99 	int i;
    100 	char *longstring;
    101 
    102 	longstring = ctime(&ftime);
    103 	for (i = 4; i < 11; ++i)
    104 		(void)putchar(longstring[i]);
    105 
    106 #define	SIXMONTHS	((DAYSPERNYEAR / 2) * SECSPERDAY)
    107 	if (ftime + SIXMONTHS > time((time_t *)NULL))
    108 		for (i = 11; i < 16; ++i)
    109 			(void)putchar(longstring[i]);
    110 	else {
    111 		(void)putchar(' ');
    112 		for (i = 20; i < 24; ++i)
    113 			(void)putchar(longstring[i]);
    114 	}
    115 	(void)putchar(' ');
    116 }
    117 
    118 static void
    119 printlink(name)
    120 	char *name;
    121 {
    122 	int lnklen;
    123 	char path[MAXPATHLEN + 1];
    124 
    125 	if ((lnklen = readlink(name, path, MAXPATHLEN)) == -1) {
    126 		warn("%s", name);
    127 		return;
    128 	}
    129 	path[lnklen] = '\0';
    130 	(void)printf(" -> %s", path);
    131 }
    132