1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 /** 32 * @file sys/mount.h 33 * @brief Mounting and unmounting filesystems. 34 */ 35 36 #include <sys/cdefs.h> 37 #include <sys/ioctl.h> 38 #include <linux/fs.h> 39 40 __BEGIN_DECLS 41 42 /** The umount2() flag to force unmounting. */ 43 #define MNT_FORCE 1 44 /** The umount2() flag to lazy unmount. */ 45 #define MNT_DETACH 2 46 /** The umount2() flag to mark a mount point as expired. */ 47 #define MNT_EXPIRE 4 48 49 /** The umount2() flag to not dereference the mount point path if it's a symbolic link. */ 50 #define UMOUNT_NOFOLLOW 8 51 52 /** 53 * [mount(2)](http://man7.org/linux/man-pages/man2/mount.2.html) mounts the filesystem `source` at 54 * the mount point `target`. 55 * 56 * Returns 0 on success, and returns -1 and sets `errno` on failure. 57 */ 58 int mount(const char* __BIONIC_COMPLICATED_NULLNESS __source, const char* _Nonnull __target, const char* __BIONIC_COMPLICATED_NULLNESS __fs_type, unsigned long __flags, const void* _Nullable __data); 59 60 /** 61 * [umount(2)](http://man7.org/linux/man-pages/man2/umount.2.html) unmounts the filesystem at 62 * the given mount point. 63 * 64 * Returns 0 on success, and returns -1 and sets `errno` on failure. 65 */ 66 int umount(const char* _Nonnull __target); 67 68 /** 69 * [umount2(2)](http://man7.org/linux/man-pages/man2/umount2.2.html) unmounts the filesystem at 70 * the given mount point, according to the supplied flags. 71 * 72 * Returns 0 on success, and returns -1 and sets `errno` on failure. 73 */ 74 int umount2(const char* _Nonnull __target, int __flags); 75 76 __END_DECLS 77