find/ls.c

   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 #else
  38 static const char rcsid[] =
  39   "$FreeBSD: src/usr.bin/find/ls.c,v 1.5.6.2 2001/05/06 09:53:22 phk Exp $";
  40 #endif
  41 #endif /* not lint */
  42
  43 #include <sys/param.h>
  44 #include <sys/stat.h>
  45
  46 #include <err.h>
  47 #include <errno.h>
  48 #include <stdio.h>
  49 #include <string.h>
  50 #include <time.h>
  51 #include <unistd.h>
  52 #include <utmp.h>
  53
  54 /* Derived from the print routines in the ls(1) source code. */
  55
  56 static void printlink __P((char *));
  57 static void printtime __P((time_t));
  58
  59 void
  60 printlong(name, accpath, sb)
  61         char *name;                     /* filename to print */
  62         char *accpath;                  /* current valid path to filename */
  63         struct stat *sb;                /* stat buffer */
  64 {
  65         char modep[15], *user_from_uid(), *group_from_gid();
  66
  67         (void)printf("%6lu %4qd ", (u_long) sb->st_ino, sb->st_blocks);
  68         (void)strmode(sb->st_mode, modep);
  69         (void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, UT_NAMESIZE,
  70             user_from_uid(sb->st_uid, 0), UT_NAMESIZE,
  71             group_from_gid(sb->st_gid, 0));
  72
  73         if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
  74                 (void)printf("%3d, %3d ", major(sb->st_rdev),
  75                     minor(sb->st_rdev));
  76         else
  77                 (void)printf("%8qd ", sb->st_size);
  78         printtime(sb->st_mtime);
  79         (void)printf("%s", name);
  80         if (S_ISLNK(sb->st_mode))
  81                 printlink(accpath);
  82         (void)putchar('\n');
  83 }
  84
  85 static void
  86 printtime(ftime)
  87         time_t ftime;
  88 {
  89         int i;
  90         char longstring[80];
  91
  92         strftime(longstring, sizeof(longstring), "%c", localtime(&ftime));
  93         for (i = 4; i < 11; ++i)
  94                 (void)putchar(longstring[i]);
  95
  96 #define SIXMONTHS       ((365 / 2) * 86400)
  97         if (ftime + SIXMONTHS > time((time_t *)NULL))
  98                 for (i = 11; i < 16; ++i)
  99                         (void)putchar(longstring[i]);
 100         else {
 101                 (void)putchar(' ');
 102                 for (i = 20; i < 24; ++i)
 103                         (void)putchar(longstring[i]);
 104         }
 105         (void)putchar(' ');
 106 }
 107
 108 static void
 109 printlink(name)
 110         char *name;
 111 {
 112         int lnklen;
 113         char path[MAXPATHLEN + 1];
 114
 115         if ((lnklen = readlink(name, path, MAXPATHLEN - 1)) == -1) {
 116                 warn("%s", name);
 117                 return;
 118         }
 119         path[lnklen] = '\0';
 120         (void)printf(" -> %s", path);
 121 }