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      1 /*	$NetBSD: ls.c,v 1.21 2011/08/31 16:24:57 plunky 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "from: @(#)ls.c	8.1 (Berkeley) 6/6/93";
     36 #else
     37 __RCSID("$NetBSD: ls.c,v 1.21 2011/08/31 16:24:57 plunky Exp $");
     38 #endif
     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 <fts.h>
     47 #include <grp.h>
     48 #include <pwd.h>
     49 #include <stdio.h>
     50 #include <stdlib.h>
     51 #include <string.h>
     52 #include <time.h>
     53 #include <tzfile.h>
     54 #include <unistd.h>
     55 
     56 #include "find.h"
     57 
     58 /* Derived from the print routines in the ls(1) source code. */
     59 
     60 static void printlink(char *);
     61 static void printtime(time_t);
     62 
     63 void
     64 printlong(char *name,			/* filename to print */
     65 	char *accpath,			/* current valid path to filename */
     66 	struct stat *sb)		/* stat buffer */
     67 {
     68 	char modep[15];
     69 
     70 	(void)printf("%7lu %6lld ", (u_long)sb->st_ino,
     71 	    (long long)sb->st_blocks);
     72 	(void)strmode(sb->st_mode, modep);
     73 	(void)printf("%s %3lu %-*s %-*s ", modep, (unsigned long)sb->st_nlink,
     74 	    LOGIN_NAME_MAX, user_from_uid(sb->st_uid, 0), LOGIN_NAME_MAX,
     75 	    group_from_gid(sb->st_gid, 0));
     76 
     77 	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
     78 		(void)printf("%3llu,%5llu ",
     79 		    (unsigned long long)major(sb->st_rdev),
     80 		    (unsigned long long)minor(sb->st_rdev));
     81 	else
     82 		(void)printf("%9lld ", (long long)sb->st_size);
     83 	printtime(sb->st_mtime);
     84 	(void)printf("%s", name);
     85 	if (S_ISLNK(sb->st_mode))
     86 		printlink(accpath);
     87 	(void)putchar('\n');
     88 }
     89 
     90 static void
     91 printtime(time_t ftime)
     92 {
     93 	int i;
     94 	char *longstring;
     95 
     96 	longstring = ctime(&ftime);
     97 	for (i = 4; i < 11; ++i)
     98 		(void)putchar(longstring[i]);
     99 
    100 #define	SIXMONTHS	((DAYSPERNYEAR / 2) * SECSPERDAY)
    101 	if (ftime + SIXMONTHS > time(NULL))
    102 		for (i = 11; i < 16; ++i)
    103 			(void)putchar(longstring[i]);
    104 	else {
    105 		(void)putchar(' ');
    106 		for (i = 20; i < 24; ++i)
    107 			(void)putchar(longstring[i]);
    108 	}
    109 	(void)putchar(' ');
    110 }
    111 
    112 static void
    113 printlink(char *name)
    114 {
    115 	int lnklen;
    116 	char path[MAXPATHLEN + 1];
    117 
    118 	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
    119 		warn("%s", name);
    120 		return;
    121 	}
    122 	path[lnklen] = '\0';
    123 	(void)printf(" -> %s", path);
    124 }
    125