/* Utilities for reading/writing fstab, mtab, etc.

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Copyright (C) 1995-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _MNTENT_H

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#define _MNTENT_H 1

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#include <features.h>

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#include <paths.h>

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#include <bits/types/FILE.h>

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/* File listing canonical interesting mount points. */

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#define MNTTAB _PATH_MNTTAB /* Deprecated alias. */

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/* File listing currently active mount points. */

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#define MOUNTED _PATH_MOUNTED /* Deprecated alias. */

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/* General filesystem types. */

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#define MNTTYPE_IGNORE "ignore" /* Ignore this entry. */

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#define MNTTYPE_NFS "nfs" /* Network file system. */

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#define MNTTYPE_SWAP "swap" /* Swap device. */

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/* Generic mount options. */

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#define MNTOPT_DEFAULTS "defaults" /* Use all default options. */

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#define MNTOPT_RO "ro" /* Read only. */

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#define MNTOPT_RW "rw" /* Read/write. */

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#define MNTOPT_SUID "suid" /* Set uid allowed. */

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#define MNTOPT_NOSUID "nosuid" /* No set uid allowed. */

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#define MNTOPT_NOAUTO "noauto" /* Do not auto mount. */

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__BEGIN_DECLS

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/* Structure describing a mount table entry. */

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struct mntent

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{

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char *mnt_fsname; /* Device or server for filesystem. */

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char *mnt_dir; /* Directory mounted on. */

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char *mnt_type; /* Type of filesystem: ufs, nfs, etc. */

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char *mnt_opts; /* Comma-separated options for fs. */

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int mnt_freq; /* Dump frequency (in days). */

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int mnt_passno; /* Pass number for `fsck'. */

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};

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/* Prepare to begin reading and/or writing mount table entries from the

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beginning of FILE. MODE is as for `fopen'. */

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extern FILE *setmntent (const char *__file, const char *__mode) __THROW;

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/* Read one mount table entry from STREAM. Returns a pointer to storage

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reused on the next call, or null for EOF or error (use feof/ferror to

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check). */

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extern struct mntent *getmntent (FILE *__stream) __THROW;

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#ifdef __USE_MISC

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/* Reentrant version of the above function. */

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extern struct mntent *getmntent_r (FILE *__restrict __stream,

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struct mntent *__restrict __result,

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char *__restrict __buffer,

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int __bufsize) __THROW;

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#endif

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/* Write the mount table entry described by MNT to STREAM.

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Return zero on success, nonzero on failure. */

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extern int addmntent (FILE *__restrict __stream,

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const struct mntent *__restrict __mnt) __THROW;

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/* Close a stream opened with `setmntent'. */

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extern int endmntent (FILE *__stream) __THROW;

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/* Search MNT->mnt_opts for an option matching OPT.

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Returns the address of the substring, or null if none found. */

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extern char *hasmntopt (const struct mntent *__mnt,

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const char *__opt) __THROW;

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__END_DECLS

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#endif /* mntent.h */

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