libdisk/mountinfo.c

   1 /*
   2  * Copyright (c) 2000-2001 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32
  33 #include <stdio.h>
  34 #include <fcntl.h>
  35 #include <mntent.h>
  36 #include <unistd.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <sys/stat.h>
  40 #include <sys/param.h>
  41 #include "mountinfo.h"
  42
  43 int
  44 mnt_check_init(mnt_check_state_t **check_state)
  45 {
  46         return(0);
  47 }
  48
  49 int
  50 mnt_find_mount_conflicts(mnt_check_state_t *check_state, char *devname)
  51 {
  52 #define PROC_MOUNTED    "/proc/mounts"
  53         int             sts = 0;
  54         FILE            *f;
  55         struct mntent   *mnt;
  56         struct stat64   ns, ms;
  57         char            mounts[MAXPATHLEN];
  58
  59         if (stat64(devname, &ns) < 0)
  60                 return sts;
  61
  62         strcpy(mounts, access(PROC_MOUNTED, R_OK)? PROC_MOUNTED : MOUNTED);
  63         if ((f = setmntent(mounts, "r")) == NULL)
  64                 return sts;
  65         while ((mnt = getmntent(f)) != NULL) {
  66                 if (stat64(mnt->mnt_fsname, &ms) < 0)
  67                         continue;
  68                 if (S_ISBLK(ms.st_mode) && ns.st_rdev == ms.st_rdev)
  69                         break;
  70                 if (!S_ISBLK(ms.st_mode) && !strcmp(devname, mnt->mnt_fsname))
  71                         break;
  72         }
  73         endmntent(f);
  74         if (mnt)
  75                 sts = 1;
  76         return sts;
  77 }
  78
  79 int
  80 mnt_find_mounted_partitions(mnt_check_state_t *check_state, char *devname)
  81 {
  82         return 0;
  83 }
  84
  85 int
  86 mnt_causes_test(mnt_check_state_t *check_state, int cause)
  87 {
  88         switch(cause) {
  89         case MNT_CAUSE_MOUNTED:
  90                 return(1);
  91
  92         default:
  93                 fprintf(stderr, "mnt_causes_test: unknown cause %d\n", cause);
  94                 exit(99);
  95         }
  96 }
  97
  98 void
  99 mnt_causes_show(mnt_check_state_t *check_state, FILE *fp, char *prefix)
 100 {
 101         fprintf(fp, "mnt_causes_show: not implemented. Called with %s\n",
 102                 prefix);
 103         exit(98);
 104 }
 105
 106 void
 107 mnt_plist_show(mnt_check_state_t *check_state, FILE *fp, char *prefix)
 108 {
 109         /*
 110          * Need to do some work for volume mgmt.
 111          */
 112 }
 113
 114 int
 115 mnt_check_end(mnt_check_state_t *check_state)
 116 {
 117         return(0);
 118 }