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. */ 54struct 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'. */ 67extern 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). */ 72extern struct mntent *getmntent (FILE *__stream) __THROW; 73 74#ifdef __USE_MISC 75/* Reentrant version of the above function. */ 76extern 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. */ 84extern int addmntent (FILE *__restrict __stream, 85 __const struct mntent *__restrict __mnt) __THROW; 86 87/* Close a stream opened with `setmntent'. */ 88extern 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. */ 92extern char *hasmntopt (__const struct mntent *__mnt, 93 __const char *__opt) __THROW; 94 95 96__END_DECLS 97 98#endif /* mntent.h */ 99