usr.bin/find/ls.c

   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 }