commands/find/ls.c

   1 /*      $NetBSD: ls.c,v 1.19 2006/10/11 19:51:10 apb 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
  34 #include <sys/param.h>
  35 #include <sys/stat.h>
  36
  37 #include <err.h>
  38 #include <errno.h>
  39 #include <fts.h>
  40 #include <grp.h>
  41 #include <pwd.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <time.h>
  46 #include <tzfile.h>
  47 #include <unistd.h>
  48 #include <fcntl.h>
  49 #include <fcntl.h>
  50 #include <pwd.h>
  51 #include <sys/statfs.h>
  52
  53 #include "find.h"
  54
  55 /* Derived from the print routines in the ls(1) source code. */
  56
  57 static void printlink(char *);
  58 static void printtime(time_t);
  59
  60 void
  61 printlong(char *name,                   /* filename to print */
  62         char *accpath,                  /* current valid path to filename */
  63         struct stat *sb)                /* stat buffer */
  64 {
  65         char modep[15];
  66         static dev_t dev;
  67         static int blocksize = 0;
  68         long blocks = -1;
  69
  70         if(!blocksize || sb->st_dev != dev) {
  71                 int fd;
  72                 struct statfs fs;
  73                 blocksize = 0;
  74                 if((fd = open(name, O_RDONLY)) >= 0) {
  75                         if(fstatfs(fd, &fs) >= 0) {
  76                                 blocksize = fs.f_bsize;
  77                         }
  78                         close(fd);
  79                 }
  80         }
  81
  82         if(blocksize > 0)
  83                 blocks = ((long)sb->st_size+blocksize-1)/blocksize;
  84
  85         (void)printf("%7lu ", (u_long)sb->st_ino);
  86         if(blocks >= 0)
  87                 (void)printf("%6ld ", blocks);
  88         else
  89                 (void)printf("? ");
  90         (void)strmode(sb->st_mode, modep);
  91         (void)printf("%s %3lu %-10s %-10s ", modep, (unsigned long)sb->st_nlink,
  92             user_from_uid(sb->st_uid, 0),
  93             group_from_gid(sb->st_gid, 0));
  94
  95         if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
  96                 (void)printf("%3d,%5d ", major(sb->st_rdev),
  97                     minor(sb->st_rdev));
  98         else
  99                 (void)printf("%9ld ", (long)sb->st_size);
 100         printtime(sb->st_mtime);
 101         (void)printf("%s", name);
 102         if (S_ISLNK(sb->st_mode))
 103                 printlink(accpath);
 104         (void)putchar('\n');
 105 }
 106
 107 static void
 108 printtime(time_t ftime)
 109 {
 110         int i;
 111         char *longstring;
 112
 113         longstring = ctime(&ftime);
 114         for (i = 4; i < 11; ++i)
 115                 (void)putchar(longstring[i]);
 116
 117 #define SIXMONTHS       ((DAYSPERNYEAR / 2) * SECSPERDAY)
 118         if (ftime + SIXMONTHS > time((time_t *)NULL))
 119                 for (i = 11; i < 16; ++i)
 120                         (void)putchar(longstring[i]);
 121         else {
 122                 (void)putchar(' ');
 123                 for (i = 20; i < 24; ++i)
 124                         (void)putchar(longstring[i]);
 125         }
 126         (void)putchar(' ');
 127 }
 128
 129 static void
 130 printlink(char *name)
 131 {
 132         int lnklen;
 133         char path[MAXPATHLEN + 1];
 134
 135         if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
 136                 warn("%s", name);
 137                 return;
 138         }
 139         path[lnklen] = '\0';
 140         (void)printf(" -> %s", path);
 141 }