100 lines
3.7 KiB
C
100 lines
3.7 KiB
C
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/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SYS_MOUNT_H
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#define _SYS_MOUNT_H
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#include <sys/cdefs.h>
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#include <sys/ioctl.h>
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__BEGIN_DECLS
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/*
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* These are the fs-independent mount-flags: up to 32 flags are supported
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*/
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#define MS_RDONLY 1 /* Mount read-only */
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#define MS_NOSUID 2 /* Ignore suid and sgid bits */
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#define MS_NODEV 4 /* Disallow access to device special files */
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#define MS_NOEXEC 8 /* Disallow program execution */
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#define MS_SYNCHRONOUS 16 /* Writes are synced at once */
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#define MS_REMOUNT 32 /* Alter flags of a mounted FS */
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#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
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#define MS_DIRSYNC 128 /* Directory modifications are synchronous */
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#define MS_NOATIME 1024 /* Do not update access times. */
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#define MS_NODIRATIME 2048 /* Do not update directory access times */
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#define MS_BIND 4096
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#define MS_MOVE 8192
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#define MS_REC 16384
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#define MS_VERBOSE 32768
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#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
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#define MS_ONE_SECOND (1<<17) /* fs has 1 sec a/m/ctime resolution */
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#define MS_ACTIVE (1<<30)
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#define MS_NOUSER (1<<31)
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/*
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* Superblock flags that can be altered by MS_REMOUNT
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*/
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#define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_NOATIME|MS_NODIRATIME)
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/*
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* Old magic mount flag and mask
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*/
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#define MS_MGC_VAL 0xC0ED0000
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#define MS_MGC_MSK 0xffff0000
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/*
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* umount2() flags
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*/
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#define MNT_FORCE 1 /* Forcibly unmount */
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#define MNT_DETACH 2 /* Detach from tree only */
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#define MNT_EXPIRE 4 /* Mark for expiry */
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/*
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* Block device ioctls
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*/
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#define BLKROSET _IO(0x12, 93) /* Set device read-only (0 = read-write). */
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#define BLKROGET _IO(0x12, 94) /* Get read-only status (0 = read_write). */
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#define BLKRRPART _IO(0x12, 95) /* Re-read partition table. */
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#define BLKGETSIZE _IO(0x12, 96) /* Return device size. */
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#define BLKFLSBUF _IO(0x12, 97) /* Flush buffer cache. */
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#define BLKRASET _IO(0x12, 98) /* Set read ahead for block device. */
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#define BLKRAGET _IO(0x12, 99) /* Get current read ahead setting. */
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/*
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* Prototypes
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*/
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extern int mount(const char *, const char *,
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const char *, unsigned long,
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const void *);
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extern int umount(const char *);
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extern int umount2(const char *, int);
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extern int pivot_root(const char *, const char *);
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__END_DECLS
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#endif /* _SYS_MOUNT_H */
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