find/ls.c

   1 /*      $NetBSD: ls.c,v 1.10 1998/03/03 02:22:40 thorpej 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 1.10 1998/03/03 02:22:40 thorpej 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 }