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-rw-r--r--include/sys/mman.h140
1 files changed, 120 insertions, 20 deletions
diff --git a/include/sys/mman.h b/include/sys/mman.h
index 68445bbb1..c0dd39e32 100644
--- a/include/sys/mman.h
+++ b/include/sys/mman.h
@@ -1,39 +1,139 @@
-#ifndef _SYS_MMAN_H
-#define _SYS_MMAN_H
+/* Definitions for BSD-style memory management.
+ Copyright (C) 1994-1999, 2000 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SYS_MMAN_H
+#define _SYS_MMAN_H 1
#include <features.h>
#include <bits/types.h>
#define __need_size_t
#include <stddef.h>
-#include <bits/mman.h>
-#ifndef MAP_ANON
-#define MAP_ANON MAP_ANONYMOUS /* idem */
+#ifndef __off_t_defined
+# ifndef __USE_FILE_OFFSET64
+typedef __off_t off_t;
+# else
+typedef __off64_t off_t;
+# endif
+# define __off_t_defined
#endif
-#ifndef MAP_FILE
-#define MAP_FILE 0x00 /* The 'normal' way: mapped from file */
+
+#ifndef __mode_t_defined
+typedef __mode_t mode_t;
+# define __mode_t_defined
#endif
-#define MAP_FAILED ((__ptr_t) -1) /* Return value of `mmap' in case of an error. */
+#include <bits/mman.h>
+
+/* Return value of `mmap' in case of an error. */
+#define MAP_FAILED ((void *) -1)
__BEGIN_DECLS
+/* Map addresses starting near ADDR and extending for LEN bytes. from
+ OFFSET into the file FD describes according to PROT and FLAGS. If ADDR
+ is nonzero, it is the desired mapping address. If the MAP_FIXED bit is
+ set in FLAGS, the mapping will be at ADDR exactly (which must be
+ page-aligned); otherwise the system chooses a convenient nearby address.
+ The return value is the actual mapping address chosen or MAP_FAILED
+ for errors (in which case `errno' is set). A successful `mmap' call
+ deallocates any previous mapping for the affected region. */
+
+#ifndef __USE_FILE_OFFSET64
+extern void *mmap (void *__addr, size_t __len, int __prot,
+ int __flags, int __fd, __off_t __offset) __THROW;
+#else
+# ifdef __REDIRECT
+extern void * __REDIRECT (mmap,
+ (void *__addr, size_t __len, int __prot,
+ int __flags, int __fd, __off64_t __offset) __THROW,
+ mmap64);
+# else
+# define mmap mmap64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern void *mmap64 (void *__addr, size_t __len, int __prot,
+ int __flags, int __fd, __off64_t __offset) __THROW;
+#endif
-extern __ptr_t mmap __P((__ptr_t __addr, size_t __len,
- int __prot, int __flags, int __fd, off_t __off));
-extern int munmap __P((__ptr_t __addr, size_t __len));
-extern int mprotect __P ((__const __ptr_t __addr, size_t __len, int __prot));
+/* Deallocate any mapping for the region starting at ADDR and extending LEN
+ bytes. Returns 0 if successful, -1 for errors (and sets errno). */
+extern int munmap (void *__addr, size_t __len) __THROW;
-extern int msync __P((__ptr_t __addr, size_t __len, int __flags));
+/* Change the memory protection of the region starting at ADDR and
+ extending LEN bytes to PROT. Returns 0 if successful, -1 for errors
+ (and sets errno). */
+extern int mprotect (void *__addr, size_t __len, int __prot) __THROW;
+
+/* Synchronize the region starting at ADDR and extending LEN bytes with the
+ file it maps. Filesystem operations on a file being mapped are
+ unpredictable before this is done. Flags are from the MS_* set. */
+extern int msync (void *__addr, size_t __len, int __flags) __THROW;
+
+#ifdef __USE_BSD
+/* Advise the system about particular usage patterns the program follows
+ for the region starting at ADDR and extending LEN bytes. */
+extern int madvise (void *__addr, size_t __len, int __advice) __THROW;
+#endif
+#ifdef __USE_XOPEN2K
+/* This is the POSIX name for this function. */
+extern int posix_madvise (void *__addr, size_t __len, int __advice) __THROW;
+#endif
+
+/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to
+ be memory resident. */
+extern int mlock (__const void *__addr, size_t __len) __THROW;
+
+/* Unlock whole pages previously mapped by the range [ADDR,ADDR+LEN). */
+extern int munlock (__const void *__addr, size_t __len) __THROW;
+
+/* Cause all currently mapped pages of the process to be memory resident
+ until unlocked by a call to the `munlockall', until the process exits,
+ or until the process calls `execve'. */
+extern int mlockall (int __flags) __THROW;
+
+/* All currently mapped pages of the process' address space become
+ unlocked. */
+extern int munlockall (void) __THROW;
+
+#ifdef __USE_MISC
+/* Remap pages mapped by the range [ADDR,ADDR+OLD_LEN) to new length
+ NEW_LEN. If MAY_MOVE is MREMAP_MAYMOVE the returned address may
+ differ from ADDR. */
+extern void *mremap (void *__addr, size_t __old_len, size_t __new_len,
+ int __may_move) __THROW;
+
+/* mincore returns the memory residency status of the pages in the
+ current process's address space specified by [start, start + len).
+ The status is returned in a vector of bytes. The least significant
+ bit of each byte is 1 if the referenced page is in memory, otherwise
+ it is zero. */
+extern int mincore (void *__start, size_t __len, unsigned char *__vec);
+#endif
-extern int mlock __P((__const __ptr_t __addr, size_t __len));
-extern int munlock __P((__const __ptr_t __addr, size_t __len));
-extern int mlockall __P((int __flags));
-extern int munlockall __P((void));
+/* Open shared memory segment. */
+extern int shm_open (__const char *__name, int __oflag, mode_t __mode);
-extern __ptr_t mremap __P((__ptr_t __addr, size_t __old_len,
- size_t __new_len, int __may_move));
+/* Remove shared memory segment. */
+extern int shm_unlink (__const char *__name);
__END_DECLS
-#endif /* _SYS_MMAN_H */
+#endif /* sys/mman.h */