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 */ 99
