mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 11:51:27 +00:00
75069f2b5b
Fix clashing values for O_PATH and FMODE_NONOTIFY on sparc. The clashing O_PATH value was added in commit5229645bdc("vfs: add nonconflicting values for O_PATH") but this can't be changed as it is user-visible. FMODE_NONOTIFY is only used internally in the kernel, but it is in the same numbering space as the other O_* flags, as indicated by the comment at the top of include/uapi/asm-generic/fcntl.h (and its use in fs/notify/fanotify/fanotify_user.c). So renumber it to avoid the clash. All of this has happened before (commit12ed2e36c9: "fanotify: FMODE_NONOTIFY and __O_SYNC in sparc conflict"), and all of this will happen again -- so update the uniqueness check in fcntl_init() to include __FMODE_NONOTIFY. Signed-off-by: David Drysdale <drysdale@google.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Jan Kara <jack@suse.cz> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
221 lines
5.2 KiB
C
221 lines
5.2 KiB
C
#ifndef _ASM_GENERIC_FCNTL_H
|
|
#define _ASM_GENERIC_FCNTL_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* FMODE_EXEC is 0x20
|
|
* FMODE_NONOTIFY is 0x4000000
|
|
* These cannot be used by userspace O_* until internal and external open
|
|
* flags are split.
|
|
* -Eric Paris
|
|
*/
|
|
|
|
/*
|
|
* When introducing new O_* bits, please check its uniqueness in fcntl_init().
|
|
*/
|
|
|
|
#define O_ACCMODE 00000003
|
|
#define O_RDONLY 00000000
|
|
#define O_WRONLY 00000001
|
|
#define O_RDWR 00000002
|
|
#ifndef O_CREAT
|
|
#define O_CREAT 00000100 /* not fcntl */
|
|
#endif
|
|
#ifndef O_EXCL
|
|
#define O_EXCL 00000200 /* not fcntl */
|
|
#endif
|
|
#ifndef O_NOCTTY
|
|
#define O_NOCTTY 00000400 /* not fcntl */
|
|
#endif
|
|
#ifndef O_TRUNC
|
|
#define O_TRUNC 00001000 /* not fcntl */
|
|
#endif
|
|
#ifndef O_APPEND
|
|
#define O_APPEND 00002000
|
|
#endif
|
|
#ifndef O_NONBLOCK
|
|
#define O_NONBLOCK 00004000
|
|
#endif
|
|
#ifndef O_DSYNC
|
|
#define O_DSYNC 00010000 /* used to be O_SYNC, see below */
|
|
#endif
|
|
#ifndef FASYNC
|
|
#define FASYNC 00020000 /* fcntl, for BSD compatibility */
|
|
#endif
|
|
#ifndef O_DIRECT
|
|
#define O_DIRECT 00040000 /* direct disk access hint */
|
|
#endif
|
|
#ifndef O_LARGEFILE
|
|
#define O_LARGEFILE 00100000
|
|
#endif
|
|
#ifndef O_DIRECTORY
|
|
#define O_DIRECTORY 00200000 /* must be a directory */
|
|
#endif
|
|
#ifndef O_NOFOLLOW
|
|
#define O_NOFOLLOW 00400000 /* don't follow links */
|
|
#endif
|
|
#ifndef O_NOATIME
|
|
#define O_NOATIME 01000000
|
|
#endif
|
|
#ifndef O_CLOEXEC
|
|
#define O_CLOEXEC 02000000 /* set close_on_exec */
|
|
#endif
|
|
|
|
/*
|
|
* Before Linux 2.6.33 only O_DSYNC semantics were implemented, but using
|
|
* the O_SYNC flag. We continue to use the existing numerical value
|
|
* for O_DSYNC semantics now, but using the correct symbolic name for it.
|
|
* This new value is used to request true Posix O_SYNC semantics. It is
|
|
* defined in this strange way to make sure applications compiled against
|
|
* new headers get at least O_DSYNC semantics on older kernels.
|
|
*
|
|
* This has the nice side-effect that we can simply test for O_DSYNC
|
|
* wherever we do not care if O_DSYNC or O_SYNC is used.
|
|
*
|
|
* Note: __O_SYNC must never be used directly.
|
|
*/
|
|
#ifndef O_SYNC
|
|
#define __O_SYNC 04000000
|
|
#define O_SYNC (__O_SYNC|O_DSYNC)
|
|
#endif
|
|
|
|
#ifndef O_PATH
|
|
#define O_PATH 010000000
|
|
#endif
|
|
|
|
#ifndef __O_TMPFILE
|
|
#define __O_TMPFILE 020000000
|
|
#endif
|
|
|
|
/* a horrid kludge trying to make sure that this will fail on old kernels */
|
|
#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
|
|
#define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT)
|
|
|
|
#ifndef O_NDELAY
|
|
#define O_NDELAY O_NONBLOCK
|
|
#endif
|
|
|
|
#define F_DUPFD 0 /* dup */
|
|
#define F_GETFD 1 /* get close_on_exec */
|
|
#define F_SETFD 2 /* set/clear close_on_exec */
|
|
#define F_GETFL 3 /* get file->f_flags */
|
|
#define F_SETFL 4 /* set file->f_flags */
|
|
#ifndef F_GETLK
|
|
#define F_GETLK 5
|
|
#define F_SETLK 6
|
|
#define F_SETLKW 7
|
|
#endif
|
|
#ifndef F_SETOWN
|
|
#define F_SETOWN 8 /* for sockets. */
|
|
#define F_GETOWN 9 /* for sockets. */
|
|
#endif
|
|
#ifndef F_SETSIG
|
|
#define F_SETSIG 10 /* for sockets. */
|
|
#define F_GETSIG 11 /* for sockets. */
|
|
#endif
|
|
|
|
#ifndef CONFIG_64BIT
|
|
#ifndef F_GETLK64
|
|
#define F_GETLK64 12 /* using 'struct flock64' */
|
|
#define F_SETLK64 13
|
|
#define F_SETLKW64 14
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef F_SETOWN_EX
|
|
#define F_SETOWN_EX 15
|
|
#define F_GETOWN_EX 16
|
|
#endif
|
|
|
|
#ifndef F_GETOWNER_UIDS
|
|
#define F_GETOWNER_UIDS 17
|
|
#endif
|
|
|
|
/*
|
|
* Open File Description Locks
|
|
*
|
|
* Usually record locks held by a process are released on *any* close and are
|
|
* not inherited across a fork().
|
|
*
|
|
* These cmd values will set locks that conflict with process-associated
|
|
* record locks, but are "owned" by the open file description, not the
|
|
* process. This means that they are inherited across fork() like BSD (flock)
|
|
* locks, and they are only released automatically when the last reference to
|
|
* the the open file against which they were acquired is put.
|
|
*/
|
|
#define F_OFD_GETLK 36
|
|
#define F_OFD_SETLK 37
|
|
#define F_OFD_SETLKW 38
|
|
|
|
#define F_OWNER_TID 0
|
|
#define F_OWNER_PID 1
|
|
#define F_OWNER_PGRP 2
|
|
|
|
struct f_owner_ex {
|
|
int type;
|
|
__kernel_pid_t pid;
|
|
};
|
|
|
|
/* for F_[GET|SET]FL */
|
|
#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
|
|
|
|
/* for posix fcntl() and lockf() */
|
|
#ifndef F_RDLCK
|
|
#define F_RDLCK 0
|
|
#define F_WRLCK 1
|
|
#define F_UNLCK 2
|
|
#endif
|
|
|
|
/* for old implementation of bsd flock () */
|
|
#ifndef F_EXLCK
|
|
#define F_EXLCK 4 /* or 3 */
|
|
#define F_SHLCK 8 /* or 4 */
|
|
#endif
|
|
|
|
/* operations for bsd flock(), also used by the kernel implementation */
|
|
#define LOCK_SH 1 /* shared lock */
|
|
#define LOCK_EX 2 /* exclusive lock */
|
|
#define LOCK_NB 4 /* or'd with one of the above to prevent
|
|
blocking */
|
|
#define LOCK_UN 8 /* remove lock */
|
|
|
|
#define LOCK_MAND 32 /* This is a mandatory flock ... */
|
|
#define LOCK_READ 64 /* which allows concurrent read operations */
|
|
#define LOCK_WRITE 128 /* which allows concurrent write operations */
|
|
#define LOCK_RW 192 /* which allows concurrent read & write ops */
|
|
|
|
#define F_LINUX_SPECIFIC_BASE 1024
|
|
|
|
#ifndef HAVE_ARCH_STRUCT_FLOCK
|
|
#ifndef __ARCH_FLOCK_PAD
|
|
#define __ARCH_FLOCK_PAD
|
|
#endif
|
|
|
|
struct flock {
|
|
short l_type;
|
|
short l_whence;
|
|
__kernel_off_t l_start;
|
|
__kernel_off_t l_len;
|
|
__kernel_pid_t l_pid;
|
|
__ARCH_FLOCK_PAD
|
|
};
|
|
#endif
|
|
|
|
#ifndef HAVE_ARCH_STRUCT_FLOCK64
|
|
#ifndef __ARCH_FLOCK64_PAD
|
|
#define __ARCH_FLOCK64_PAD
|
|
#endif
|
|
|
|
struct flock64 {
|
|
short l_type;
|
|
short l_whence;
|
|
__kernel_loff_t l_start;
|
|
__kernel_loff_t l_len;
|
|
__kernel_pid_t l_pid;
|
|
__ARCH_FLOCK64_PAD
|
|
};
|
|
#endif
|
|
|
|
#endif /* _ASM_GENERIC_FCNTL_H */
|