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, see 17 <http://www.gnu.org/licenses/>. */ 18 19 #ifndef _MNTENT_H 20 #define _MNTENT_H 1 21 22 #include <features.h> 23 #define __need_FILE 24 #include <stdio.h> 25 #include <paths.h> 26 27 28 /* File listing canonical interesting mount points. */ 29 #define MNTTAB _PATH_MNTTAB /* Deprecated alias. */ 30 31 /* File listing currently active mount points. */ 32 #define MOUNTED _PATH_MOUNTED /* Deprecated alias. */ 33 34 35 /* General filesystem types. */ 36 #define MNTTYPE_IGNORE "ignore" /* Ignore this entry. */ 37 #define MNTTYPE_NFS "nfs" /* Network file system. */ 38 #define MNTTYPE_SWAP "swap" /* Swap device. */ 39 40 41 /* Generic mount options. */ 42 #define MNTOPT_DEFAULTS "defaults" /* Use all default options. */ 43 #define MNTOPT_RO "ro" /* Read only. */ 44 #define MNTOPT_RW "rw" /* Read/write. */ 45 #define MNTOPT_SUID "suid" /* Set uid allowed. */ 46 #define MNTOPT_NOSUID "nosuid" /* No set uid allowed. */ 47 #define MNTOPT_NOAUTO "noauto" /* Do not auto mount. */ 48 49 50 __BEGIN_DECLS 51 52 /* Structure describing a mount table entry. */ 53 struct mntent 54 { 55 char *mnt_fsname; /* Device or server for filesystem. */ 56 char *mnt_dir; /* Directory mounted on. */ 57 char *mnt_type; /* Type of filesystem: ufs, nfs, etc. */ 58 char *mnt_opts; /* Comma-separated options for fs. */ 59 int mnt_freq; /* Dump frequency (in days). */ 60 int mnt_passno; /* Pass number for `fsck'. */ 61 }; 62 63 64 /* Prepare to begin reading and/or writing mount table entries from the 65 beginning of FILE. MODE is as for `fopen'. */ 66 extern FILE *setmntent (const char *__file, const char *__mode) __THROW; 67 libc_hidden_proto(setmntent) 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 libc_hidden_proto(getmntent_r) 81 #endif 82 83 /* Write the mount table entry described by MNT to STREAM. 84 Return zero on success, nonzero on failure. */ 85 extern int addmntent (FILE *__restrict __stream, 86 const struct mntent *__restrict __mnt) __THROW; 87 88 /* Close a stream opened with `setmntent'. */ 89 extern int endmntent (FILE *__stream) __THROW; 90 libc_hidden_proto(endmntent) 91 92 /* Search MNT->mnt_opts for an option matching OPT. 93 Returns the address of the substring, or null if none found. */ 94 extern char *hasmntopt (const struct mntent *__mnt, 95 const char *__opt) __THROW; 96 97 98 __END_DECLS 99 100 #endif /* mntent.h */ 101