1: /* Utilities for reading/writing fstab, mtab, etc.
    2:    Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4: 
    5:    The GNU C Library is free software; you can redistribute it and/or
    6:    modify it under the terms of the GNU Lesser General Public
    7:    License as published by the Free Software Foundation; either
    8:    version 2.1 of the License, or (at your option) any later version.
    9: 
   10:    The GNU C Library is distributed in the hope that it will be useful,
   11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   13:    Lesser General Public License for more details.
   14: 
   15:    You should have received a copy of the GNU Lesser General Public
   16:    License along with the GNU C Library; if not, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: #ifndef _MNTENT_H
   21: #define _MNTENT_H       1
   22: 
   23: #include <features.h>
   24: #define __need_FILE
   25: #include <stdio.h>
   26: #include <paths.h>
   27: 
   28: 
   29: /* File listing canonical interesting mount points.  */
   30: #define MNTTAB          _PATH_MNTTAB    /* Deprecated alias.  */
   31: 
   32: /* File listing currently active mount points.  */
   33: #define MOUNTED         _PATH_MOUNTED  /* Deprecated alias.  */
   34: 
   35: 
   36: /* General filesystem types.  */
   37: #define MNTTYPE_IGNORE  "ignore" /* Ignore this entry.  */
   38: #define MNTTYPE_NFS     "nfs"               /* Network file system.  */
   39: #define MNTTYPE_SWAP    "swap"             /* Swap device.  */
   40: 
   41: 
   42: /* Generic mount options.  */
   43: #define MNTOPT_DEFAULTS "defaults"      /* Use all default options.  */
   44: #define MNTOPT_RO       "ro"          /* Read only.  */
   45: #define MNTOPT_RW       "rw"          /* Read/write.  */
   46: #define MNTOPT_SUID     "suid"              /* Set uid allowed.  */
   47: #define MNTOPT_NOSUID   "nosuid"  /* No set uid allowed.  */
   48: #define MNTOPT_NOAUTO   "noauto"  /* Do not auto mount.  */
   49: 
   50: 
   51: __BEGIN_DECLS
   52: 
   53: /* Structure describing a mount table entry.  */
   54: struct mntent
   55:   {
   56:     char *mnt_fsname;           /* Device or server for filesystem.  */
   57:     char *mnt_dir;              /* Directory mounted on.  */
   58:     char *mnt_type;             /* Type of filesystem: ufs, nfs, etc.  */
   59:     char *mnt_opts;             /* Comma-separated options for fs.  */
   60:     int mnt_freq;               /* Dump frequency (in days).  */
   61:     int mnt_passno;             /* Pass number for `fsck'.  */
   62:   };
   63: 
   64: 
   65: /* Prepare to begin reading and/or writing mount table entries from the
   66:    beginning of FILE.  MODE is as for `fopen'.  */
   67: extern FILE *setmntent (__const char *__file, __const char *__mode) __THROW;
   68: 
   69: /* Read one mount table entry from STREAM.  Returns a pointer to storage
   70:    reused on the next call, or null for EOF or error (use feof/ferror to
   71:    check).  */
   72: extern struct mntent *getmntent (FILE *__stream) __THROW;
   73: 
   74: #ifdef __USE_MISC
   75: /* Reentrant version of the above function.  */
   76: extern struct mntent *getmntent_r (FILE *__restrict __stream,
   77:                                    struct mntent *__restrict __result,
   78:                                    char *__restrict __buffer,
   79:                                    int __bufsize) __THROW;
   80: #endif
   81: 
   82: /* Write the mount table entry described by MNT to STREAM.
   83:    Return zero on success, nonzero on failure.  */
   84: extern int addmntent (FILE *__restrict __stream,
   85:                       __const struct mntent *__restrict __mnt) __THROW;
   86: 
   87: /* Close a stream opened with `setmntent'.  */
   88: extern int endmntent (FILE *__stream) __THROW;
   89: 
   90: /* Search MNT->mnt_opts for an option matching OPT.
   91:    Returns the address of the substring, or null if none found.  */
   92: extern char *hasmntopt (__const struct mntent *__mnt,
   93:                         __const char *__opt) __THROW;
   94: 
   95: 
   96: __END_DECLS
   97: 
   98: #endif  /* mntent.h */