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ls.c revision 1.7 
      1 /*	$NetBSD: ls.c,v 1.7 1997/01/09 20:19:13 tls 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 #ifndef lint
     37 /*static char sccsid[] = "from: @(#)ls.c	8.1 (Berkeley) 6/6/93";*/
     38 static char rcsid[] = "$NetBSD: ls.c,v 1.7 1997/01/09 20:19:13 tls Exp $";
     39 #endif /* not lint */
     40 
     41 #include <sys/param.h>
     42 #include <sys/stat.h>
     43 
     44 #include <err.h>
     45 #include <errno.h>
     46 #include <stdio.h>
     47 #include <string.h>
     48 #include <time.h>
     49 #include <tzfile.h>
     50 #include <unistd.h>
     51 #include <utmp.h>
     52 
     53 /* Derived from the print routines in the ls(1) source code. */
     54 
     55 static void printlink __P((char *));
     56 static void printtime __P((time_t));
     57 
     58 void
     59 printlong(name, accpath, sb)
     60 	char *name;			/* filename to print */
     61 	char *accpath;			/* current valid path to filename */
     62 	struct stat *sb;		/* stat buffer */
     63 {
     64 	char modep[15], *user_from_uid(), *group_from_gid();
     65 
     66 	(void)printf("%6lu %4ld ", sb->st_ino, sb->st_blocks);
     67 	(void)strmode(sb->st_mode, modep);
     68 	(void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, UT_NAMESIZE,
     69 	    user_from_uid(sb->st_uid, 0), UT_NAMESIZE,
     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("%8qd ", 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(ftime)
     86 	time_t ftime;
     87 {
     88 	int i;
     89 	char *longstring;
     90 
     91 	longstring = ctime(&ftime);
     92 	for (i = 4; i < 11; ++i)
     93 		(void)putchar(longstring[i]);
     94 
     95 #define	SIXMONTHS	((DAYSPERNYEAR / 2) * SECSPERDAY)
     96 	if (ftime + SIXMONTHS > time((time_t *)NULL))
     97 		for (i = 11; i < 16; ++i)
     98 			(void)putchar(longstring[i]);
     99 	else {
    100 		(void)putchar(' ');
    101 		for (i = 20; i < 24; ++i)
    102 			(void)putchar(longstring[i]);
    103 	}
    104 	(void)putchar(' ');
    105 }
    106 
    107 static void
    108 printlink(name)
    109 	char *name;
    110 {
    111 	int lnklen;
    112 	char path[MAXPATHLEN + 1];
    113 
    114 	if ((lnklen = readlink(name, path, MAXPATHLEN)) == -1) {
    115 		warn("%s", name);
    116 		return;
    117 	}
    118 	path[lnklen] = '\0';
    119 	(void)printf(" -> %s", path);
    120 }
    121