Reorganization of bits/fcntl.h for Linux

Create a new bits/fcntl-linux.h that contains Linux generic code and a
include it from the architecture specific bits/fcntl.h.

Architectures done: x86, SPARC, s390

1 files changed, 376 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
new file mode 100644
index 0000000000..85273719a2
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
@@ -0,0 +1,376 @@
+/* O_*, F_*, FD_* bit values for Linux.
+   Copyright (C) 2001-2012 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_FCNTL_H
+# error "Never use <bits/fcntl-linux.h> directly; include <fcntl.h> instead."
+#endif
+
+/* This file contains shared definitions between Linux architectures
+   and is included by <bits/fcntl.h> to declare them.  The various
+   #ifndef cases allow the architecture specific file to define those
+   values with different values.
+
+   A minimal <bits/fcntl.h> contains just:
+
+   struct flock {...}
+   #ifdef __USE_LARGEFILE64
+   struct flock64 {...}
+   #endif
+   #include <bits/fcntl-linux.h>
+*/
+
+#ifdef __USE_GNU
+# include <bits/uio.h>
+#endif
+
+/* open/fcntl.  */
+#define O_ACCMODE	   0003
+#define O_RDONLY	     00
+#define O_WRONLY	     01
+#define O_RDWR		     02
+#ifndef O_CREAT
+# define O_CREAT	   0100	/* Not fcntl.  */
+#endif
+#ifndef O_EXCL
+# define O_EXCL		   0200	/* Not fcntl.  */
+#endif
+#ifndef O_NOCTTY
+# define O_NOCTTY	   0400	/* Not fcntl.  */
+#endif
+#ifndef O_TRUNC
+# define O_TRUNC	  01000	/* Not fcntl.  */
+#endif
+#ifndef O_APPEND
+# define O_APPEND	  02000
+#endif
+#ifndef O_NONBLOCK
+# define O_NONBLOCK	  04000
+#endif
+#ifndef O_NDELAY
+# define O_NDELAY	O_NONBLOCK
+#endif
+#ifndef O_SYNC
+# define O_SYNC	       04010000
+#endif
+#define O_FSYNC		O_SYNC
+#ifndef O_ASYNC
+# define O_ASYNC	 020000
+#endif
+#ifndef __O_LARGEFILE
+# define __O_LARGEFILE	0100000
+#endif
+
+#ifndef __O_DIRECTORY
+# define __O_DIRECTORY  0200000
+#endif
+#ifndef __O_NOFOLLOW
+# define __O_NOFOLLOW	0400000
+#endif
+#ifndef __O_CLOEXEC
+# define __O_CLOEXEC   02000000
+#endif
+#ifndef __O_DIRECT
+# define __O_DIRECT	 040000
+#endif
+#ifndef __O_NOATIME
+# define __O_NOATIME   01000000
+#endif
+#ifndef __O_PATH
+# define __O_PATH     010000000
+#endif
+#ifndef __O_DSYNC
+# define __O_DSYNC	 010000
+#endif
+
+#ifndef F_GETLK
+# define F_GETLK	5	/* Get record locking info.  */
+# define F_SETLK	6	/* Set record locking info (non-blocking).  */
+# define F_SETLKW	7	/* Set record locking info (blocking).	*/
+#endif
+#ifndef F_GETLK64
+# define F_GETLK64	12	/* Get record locking info.  */
+# define F_SETLK64	13	/* Set record locking info (non-blocking).  */
+# define F_SETLKW64	14	/* Set record locking info (blocking).	*/
+#endif
+
+#ifdef __USE_LARGEFILE64
+# define O_LARGEFILE __O_LARGEFILE
+#endif
+
+#ifdef __USE_XOPEN2K8
+# define O_DIRECTORY	__O_DIRECTORY	/* Must be a directory.	 */
+# define O_NOFOLLOW	__O_NOFOLLOW	/* Do not follow links.	 */
+# define O_CLOEXEC	__O_CLOEXEC	/* Set close_on_exec.  */
+#endif
+
+#ifdef __USE_GNU
+# define O_DIRECT	__O_DIRECT	/* Direct disk access.	*/
+# define O_NOATIME	__O_NOATIME	/* Do not set atime.  */
+# define O_PATH		__O_PATH	/* Resolve pathname but do not open file.  */
+#endif
+
+/* For now, Linux has no separate synchronicitiy options for read
+   operations.  We define O_RSYNC therefore as the same as O_SYNC
+   since this is a superset.  */
+#if defined __USE_POSIX199309 || defined __USE_UNIX98
+# define O_DSYNC	__O_DSYNC	/* Synchronize data.  */
+# define O_RSYNC	__O_SYNC	/* Synchronize read operations.	 */
+#endif
+
+/* Values for the second argument to `fcntl'.  */
+#define F_DUPFD		0	/* Duplicate file descriptor.  */
+#define F_GETFD		1	/* Get file descriptor flags.  */
+#define F_SETFD		2	/* Set file descriptor flags.  */
+#define F_GETFL		3	/* Get file status flags.  */
+#define F_SETFL		4	/* Set file status flags.  */
+
+#ifndef __F_SETOWN
+# define __F_SETOWN	8
+# define __F_GETOWN	9
+#endif
+
+#if defined __USE_BSD || defined __USE_UNIX98 || defined __USE_XOPEN2K8
+# define F_SETOWN	__F_SETOWN /* Get owner (process receiving SIGIO).  */
+# define F_GETOWN	__F_GETOWN /* Set owner (process receiving SIGIO).  */
+#endif
+
+#ifndef __F_SETSIG
+# define __F_SETSIG	10	/* Set number of signal to be sent.  */
+# define __F_GETSIG	11	/* Get number of signal to be sent.  */
+#endif
+#ifndef __F_SETOWN_EX
+# define __F_SETOWN_EX	15	/* Get owner (thread receiving SIGIO).  */
+# define __F_GETOWN_EX	16	/* Set owner (thread receiving SIGIO).  */
+#endif
+
+#ifdef __USE_GNU
+# define F_SETSIG	__F_SETSIG	/* Set number of signal to be sent.  */
+# define F_GETSIG	__F_GETSIG	/* Get number of signal to be sent.  */
+# define F_SETOWN_EX	__F_SETOWN_EX	/* Get owner (thread receiving SIGIO).  */
+# define F_GETOWN_EX	__F_GETOWN_EX	/* Set owner (thread receiving SIGIO).  */
+#endif
+
+#ifdef __USE_GNU
+# define F_SETLEASE	1024	/* Set a lease.	 */
+# define F_GETLEASE	1025	/* Enquire what lease is active.  */
+# define F_NOTIFY	1026	/* Request notifications on a directory.  */
+# define F_SETPIPE_SZ	1031	/* Set pipe page size array.  */
+# define F_GETPIPE_SZ	1032	/* Set pipe page size array.  */
+#endif
+#ifdef __USE_XOPEN2K8
+# define F_DUPFD_CLOEXEC 1030	/* Duplicate file descriptor with
+				   close-on-exit set.  */
+#endif
+
+/* For F_[GET|SET]FD.  */
+#define FD_CLOEXEC	1	/* Actually anything with low bit set goes */
+
+#ifndef F_RDLCK
+/* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
+# define F_RDLCK		0	/* Read lock.  */
+# define F_WRLCK		1	/* Write lock.	*/
+# define F_UNLCK		2	/* Remove lock.	 */
+#endif
+
+
+/* For old implementation of BSD flock.  */
+#ifndef F_EXLCK
+# define F_EXLCK		4	/* or 3 */
+# define F_SHLCK		8	/* or 4 */
+#endif
+
+#ifdef __USE_BSD
+/* 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.  */
+#endif
+
+#ifdef __USE_GNU
+# 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 operations.	 */
+#endif
+
+#ifdef __USE_GNU
+/* Types of directory notifications that may be requested with F_NOTIFY.  */
+# define DN_ACCESS	0x00000001	/* File accessed.  */
+# define DN_MODIFY	0x00000002	/* File modified.  */
+# define DN_CREATE	0x00000004	/* File created.  */
+# define DN_DELETE	0x00000008	/* File removed.  */
+# define DN_RENAME	0x00000010	/* File renamed.  */
+# define DN_ATTRIB	0x00000020	/* File changed attributes.  */
+# define DN_MULTISHOT	0x80000000	/* Don't remove notifier.  */
+#endif
+
+
+#ifdef __USE_GNU
+/* Owner types.  */
+enum __pid_type
+  {
+    F_OWNER_TID = 0,		/* Kernel thread.  */
+    F_OWNER_PID,		/* Process.  */
+    F_OWNER_PGRP,		/* Process group.  */
+    F_OWNER_GID = F_OWNER_PGRP	/* Alternative, obsolete name.  */
+  };
+
+/* Structure to use with F_GETOWN_EX and F_SETOWN_EX.  */
+struct f_owner_ex
+  {
+    enum __pid_type type;	/* Owner type of ID.  */
+    __pid_t pid;		/* ID of owner.  */
+  };
+#endif
+
+/* Define some more compatibility macros to be backward compatible with
+   BSD systems which did not managed to hide these kernel macros.  */
+#ifdef	__USE_BSD
+# define FAPPEND	O_APPEND
+# define FFSYNC		O_FSYNC
+# define FASYNC		O_ASYNC
+# define FNONBLOCK	O_NONBLOCK
+# define FNDELAY	O_NDELAY
+#endif /* Use BSD.  */
+
+#ifndef __POSIX_FADV_DONTNEED
+#  define __POSIX_FADV_DONTNEED	4
+#  define __POSIX_FADV_NOREUSE	5
+#endif
+/* Advise to `posix_fadvise'.  */
+#ifdef __USE_XOPEN2K
+# define POSIX_FADV_NORMAL	0 /* No further special treatment.  */
+# define POSIX_FADV_RANDOM	1 /* Expect random page references.  */
+# define POSIX_FADV_SEQUENTIAL	2 /* Expect sequential page references.	 */
+# define POSIX_FADV_WILLNEED	3 /* Will need these pages.  */
+# define POSIX_FADV_DONTNEED	__POSIX_FADV_DONTNEED /* Don't need these pages.  */
+# define POSIX_FADV_NOREUSE	__POSIX_FADV_NOREUSE /* Data will be accessed once.  */
+#endif
+
+
+#ifdef __USE_GNU
+/* Flags for SYNC_FILE_RANGE.  */
+# define SYNC_FILE_RANGE_WAIT_BEFORE	1 /* Wait upon writeout of all pages
+					     in the range before performing the
+					     write.  */
+# define SYNC_FILE_RANGE_WRITE		2 /* Initiate writeout of all those
+					     dirty pages in the range which are
+					     not presently under writeback.  */
+# define SYNC_FILE_RANGE_WAIT_AFTER	4 /* Wait upon writeout of all pages in
+					     the range after performing the
+					     write.  */
+
+/* Flags for SPLICE and VMSPLICE.  */
+# define SPLICE_F_MOVE		1	/* Move pages instead of copying.  */
+# define SPLICE_F_NONBLOCK	2	/* Don't block on the pipe splicing
+					   (but we may still block on the fd
+					   we splice from/to).  */
+# define SPLICE_F_MORE		4	/* Expect more data.  */
+# define SPLICE_F_GIFT		8	/* Pages passed in are a gift.  */
+
+
+/* File handle structure.  */
+struct file_handle
+{
+  unsigned int handle_bytes;
+  int handle_type;
+  /* File identifier.  */
+  unsigned char f_handle[0];
+};
+
+/* Maximum handle size (for now).  */
+# define MAX_HANDLE_SZ	128
+#endif
+
+__BEGIN_DECLS
+
+#ifdef __USE_GNU
+
+/* Provide kernel hint to read ahead.  */
+extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
+    __THROW;
+
+
+/* Selective file content synch'ing.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern int sync_file_range (int __fd, __off64_t __offset, __off64_t __count,
+			    unsigned int __flags);
+
+
+/* Splice address range into a pipe.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
+			 size_t __count, unsigned int __flags);
+
+/* Splice two files together.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
+		       __off64_t *__offout, size_t __len,
+		       unsigned int __flags);
+
+/* In-kernel implementation of tee for pipe buffers.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern ssize_t tee (int __fdin, int __fdout, size_t __len,
+		    unsigned int __flags);
+
+/* Reserve storage for the data of the file associated with FD.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+# ifndef __USE_FILE_OFFSET64
+extern int fallocate (int __fd, int __mode, __off_t __offset, __off_t __len);
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (fallocate, (int __fd, int __mode, __off64_t __offset,
+				   __off64_t __len),
+		       fallocate64);
+#  else
+#   define fallocate fallocate64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int fallocate64 (int __fd, int __mode, __off64_t __offset,
+			__off64_t __len);
+# endif
+
+
+/* Map file name to file handle.  */
+extern int name_to_handle_at (int __dfd, const char *__name,
+			      struct file_handle *__handle, int *__mnt_id,
+			      int __flags) __THROW;
+
+/* Open file using the file handle.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern int open_by_handle_at (int __mountdirfd, struct file_handle *__handle,
+			      int __flags);
+
+#endif	/* use GNU */
+
+__END_DECLS