misc/mklost+found.c

   1 /*
   2  * mklost+found.c       - Creates a directory lost+found on a mounted second
   3  *                        extended file system
   4  *
   5  * Copyright (C) 1992, 1993  Remy Card <card@masi.ibp.fr>
   6  *
   7  * This file can be redistributed under the terms of the GNU General
   8  * Public License
   9  */
  10
  11 /*
  12  * History:
  13  * 93/04/22     - Creation
  14  */
  15
  16 #include "config.h"
  17 #include <errno.h>
  18 #include <fcntl.h>
  19 #include <stdio.h>
  20 #include <string.h>
  21 #include <unistd.h>
  22 #include <stdlib.h>
  23 #include <sys/param.h>
  24 #include <sys/stat.h>
  25
  26 #include "ext2fs/ext2_fs.h"
  27 #include "../version.h"
  28 #include "support/nls-enable.h"
  29
  30 #define LPF "lost+found"
  31
  32 int main (int argc, char ** argv)
  33 {
  34         char name [EXT2_NAME_LEN];
  35         char path [sizeof (LPF) + 1 + 256];
  36         struct stat st;
  37         int i, j;
  38         int d;
  39
  40 #ifdef ENABLE_NLS
  41         setlocale(LC_MESSAGES, "");
  42         setlocale(LC_CTYPE, "");
  43         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
  44         textdomain(NLS_CAT_NAME);
  45 #endif
  46         fprintf (stderr, "mklost+found %s (%s)\n", E2FSPROGS_VERSION,
  47                  E2FSPROGS_DATE);
  48         if (argc != 1) {
  49                 (void)argv; /* avoid unused argument warning */
  50                 fprintf (stderr, "%s", _("Usage: mklost+found\n"));
  51                 exit(1);
  52         }
  53         if (mkdir (LPF, 0700) == -1) {
  54                 perror ("mkdir");
  55                 exit(1);
  56         }
  57
  58         i = 0;
  59         memset (name, 'x', 246);
  60         do {
  61                 sprintf (name + 246, "%08d", i);
  62                 strcpy (path, LPF);
  63                 strcat (path, "/");
  64                 strcat (path, name);
  65                 if ((d = creat (path, 0644)) == -1) {
  66                         perror ("creat");
  67                         exit (1);
  68                 }
  69                 i++;
  70                 close (d);
  71                 if (stat (LPF, &st) == -1) {
  72                         perror ("stat");
  73                         exit (1);
  74                 }
  75         } while (st.st_size <= (EXT2_NDIR_BLOCKS - 1) * st.st_blksize);
  76         for (j = 0; j < i; j++) {
  77                 sprintf (name + 246, "%08d", j);
  78                 strcpy (path, LPF);
  79                 strcat (path, "/");
  80                 strcat (path, name);
  81                 if (unlink (path) == -1) {
  82                         perror ("unlink");
  83                         exit (1);
  84                 }
  85         }
  86         exit (0);
  87 }