diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sys/mount.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sys/mount.h | 70 |
1 files changed, 69 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h index 59a1aa45be..08a2e3158f 100644 --- a/sysdeps/unix/sysv/linux/sys/mount.h +++ b/sysdeps/unix/sysv/linux/sys/mount.h @@ -1,5 +1,5 @@ /* Header file for mounting/unmount Linux filesystems. - Copyright (C) 1996 Free Software Foundation, Inc. + Copyright (C) 1996, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -17,13 +17,81 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/* This is taken from /usr/include/linux/fs.h. */ + #ifndef _SYS_MOUNT_H #define _SYS_MOUNT_H 1 #include <features.h> +#include <sys/ioctl.h> + __BEGIN_DECLS +#define BLOCK_SIZE 1024 +#define BLOCK_SIZE_BITS 10 + + +/* These are the fs-independent mount-flags: up to 16 flags are + supported */ +#define MS_RDONLY 1 /* Mount read-only. */ +#define MS_NOSUID 2 /* Ignore suid and sgid bits. */ +#define MS_NODEV 4 /* Disallow access to device special files. */ +#define MS_NOEXEC 8 /* Disallow program execution. */ +#define MS_SYNCHRONOUS 16 /* Writes are synced at once. */ +#define MS_REMOUNT 32 /* Alter flags of a mounted FS. */ +#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS. */ +#define S_WRITE 128 /* Write on file/directory/symlink. */ +#define S_APPEND 256 /* Append-only file. */ +#define S_IMMUTABLE 512 /* Immutable file. */ +#define MS_NOATIME 1024 /* Do not update access times. */ + + +/* Flags that can be altered by MS_REMOUNT */ +#define MS_RMT_MASK (MS_RDONLY | MS_MANDLOCK) + + +/* Magic mount flag number. Has to be or-ed to the flag values. */ + +#define MS_MGC_VAL 0xc0ed0000 /* Magic flag number to indicate "new" flags */ +#define MS_MGC_MSK 0xffff0000 /* Magic flag number mask */ + + +/* Note that read-only etc flags are inode-specific: setting some + file-system flags just means all the inodes inherit those flags by + default. It might be possible to override it selectively if you + really wanted to with some ioctl() that is not currently + implemented. + + Exception: MS_RDONLY is always applied to the entire file system. */ +#define IS_RDONLY(inode) \ + (((inode)->i_sb) && ((inode)->i_sb->s_flags & MS_RDONLY)) +#define DO_UPDATE_ATIME(inode) \ + (!((inode)->i_flags & MS_NOATIME) && !IS_RDONLY (inode)) +#define IS_NOSUID(inode) ((inode)->i_flags & MS_NOSUID) +#define IS_NODEV(inode) ((inode)->i_flags & MS_NODEV) +#define IS_NOEXEC(inode) ((inode)->i_flags & MS_NOEXEC) +#define IS_SYNC(inode) ((inode)->i_flags & MS_SYNCHRONOUS) +#define IS_MANDLOCK(inode) ((inode)->i_flags & MS_MANDLOCK) + +#define IS_WRITABLE(inode) ((inode)->i_flags & S_WRITE) +#define IS_APPEND(inode) ((inode)->i_flags & S_APPEND) +#define IS_IMMUTABLE(inode) ((inode)->i_flags & S_IMMUTABLE) + + +/* The read-only stuff doesn't really belong here, but any other place + is probably as bad and I don't want to create yet another include + file. */ + +#define BLKROSET _IO(0x12, 93) /* Set device read-only (0 = read-write). */ +#define BLKROGET _IO(0x12, 94) /* Get read-only status (0 = read_write). */ +#define BLKRRPART _IO(0x12, 95) /* Re-read partition table. */ +#define BLKGETSIZE _IO(0x12, 96) /* Return device size. */ +#define BLKFLSBUF _IO(0x12, 97) /* Flush buffer cache. */ +#define BLKRASET _IO(0x12, 98) /* Set read ahead for block device. */ +#define BLKRAGET _IO(0x12, 99) /* Get current read ahead setting. */ + + /* Mount a filesystem. */ extern int mount __P ((__const char *__special_file, __const char *__dir, __const char *__fstype, unsigned long int __rwflag, |