src/vfsck/dirutils.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #include <afsconfig.h>
  11 #include <afs/param.h>
  12
  13 #include <roken.h>
  14
  15 #include <afs/afsint.h>
  16 #include <afs/ihandle.h>
  17 #include <afs/partition.h>
  18
  19 /* ensure that we don't have a "/" instead of a "/dev/rxd0a" type of device.
  20  * Overwrites abuffer with the corrected name.
  21  */
  22 int
  23 EnsureDevice(char *abuffer)
  24 {
  25     struct dirent *dp;
  26     char pbuffer[128];
  27     struct stat tstat;
  28     DIR *dirp;
  29     char *dirName, dirn[100];
  30     int code, i;
  31     short dev;
  32
  33     code = stat(abuffer, &tstat);
  34     if (code)
  35         return code;
  36     if (((tstat.st_mode & S_IFMT) == S_IFBLK)
  37         || ((tstat.st_mode & S_IFMT) == S_IFCHR)) {
  38         return 0;               /* already a block or char device */
  39     }
  40     /* otherwise, assume we've got a normal file, and we look up its device */
  41     dev = tstat.st_dev;         /* remember device for this file */
  42
  43     /* now, look in /dev for the appropriate file */
  44     dirp = opendir(dirName = AFS_DSKDEV);
  45     while (dp = readdir(dirp)) {
  46         strcpy(pbuffer, dirName);
  47         strcat(pbuffer, "/");
  48         strcat(pbuffer, dp->d_name);
  49         if (stat(pbuffer, &tstat) != -1 && (tstat.st_mode & S_IFMT) == S_IFBLK
  50             && (tstat.st_rdev == dev)) {
  51             strcpy(abuffer, pbuffer);
  52             closedir(dirp);
  53             return 0;
  54         }
  55     }
  56     closedir(dirp);
  57
  58     return 1;                   /* failed */
  59 }