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Diffstat (limited to 'sysdeps/unix/bsd/sun/sunos4/sys/mman.h')
-rw-r--r--sysdeps/unix/bsd/sun/sunos4/sys/mman.h53
1 files changed, 31 insertions, 22 deletions
diff --git a/sysdeps/unix/bsd/sun/sunos4/sys/mman.h b/sysdeps/unix/bsd/sun/sunos4/sys/mman.h
index 65771a2aac..d2a8998d9a 100644
--- a/sysdeps/unix/bsd/sun/sunos4/sys/mman.h
+++ b/sysdeps/unix/bsd/sun/sunos4/sys/mman.h
@@ -1,5 +1,5 @@
/* Definitions for BSD-style memory management. SunOS 4 version.
- Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
+ Copyright (C) 1994, 1995, 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
@@ -41,14 +41,18 @@
/* Sharing types (must choose one and only one of these). */
#define MAP_SHARED 0x01 /* Share changes. */
#define MAP_PRIVATE 0x02 /* Changes private; copy pages on write. */
-#define MAP_TYPE 0x0f /* Mask for sharing type. */
+#ifdef __USE_BSD
+# define MAP_TYPE 0x0f /* Mask for sharing type. */
+#endif
/* Other flags. */
#define MAP_FIXED 0x10 /* Map address must be exactly as requested. */
/* The following three flags are not actually implemented in SunOS 4.1. */
-#define MAP_RENAME 0x20 /* Rename private pages to file. */
-#define MAP_NORESERVE 0x40 /* Don't reserve needed swap area. */
-#define MAP_INHERIT 0x80 /* Region is retained after exec. */
+#ifdef __USE_BSD
+# define MAP_RENAME 0x20 /* Rename private pages to file. */
+# define MAP_NORESERVE 0x40 /* Don't reserve needed swap area. */
+# define MAP_INHERIT 0x80 /* Region is retained after exec. */
+#endif
/* This is an internal flag that is always set in `mmap' system calls. In
older versions of SunOS 4 `mmap' did not return the actual mapping
@@ -57,18 +61,21 @@
#define _MAP_NEW 0x80000000
/* Advice to `madvise'. */
-#define MADV_NORMAL 0 /* No further special treatment. */
-#define MADV_RANDOM 1 /* Expect random page references. */
-#define MADV_SEQUENTIAL 2 /* Expect sequential page references. */
-#define MADV_WILLNEED 3 /* Will need these pages. */
-#define MADV_DONTNEED 4 /* Don't need these pages. */
+#ifdef __USE_BSD
+# define MADV_NORMAL 0 /* No further special treatment. */
+# define MADV_RANDOM 1 /* Expect random page references. */
+# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */
+# define MADV_WILLNEED 3 /* Will need these pages. */
+# define MADV_DONTNEED 4 /* Don't need these pages. */
+#endif
/* Flags to `msync'. */
#define MS_ASYNC 0x1 /* Return immediately, don't fsync. */
#define MS_INVALIDATE 0x2 /* Invalidate caches. */
+/* Return value of `mmap' in case of an error. */
+#define MAP_FAILED ((__caddr_t) -1)
-#include <sys/cdefs.h>
__BEGIN_DECLS
/* Map addresses starting near ADDR and extending for LEN bytes. from
@@ -76,34 +83,36 @@ __BEGIN_DECLS
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 (caddr_t) -1
+ 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. */
-__caddr_t __mmap __P ((__caddr_t __addr, size_t __len,
- int __prot, int __flags, int __fd, __off_t __offset));
-__caddr_t mmap __P ((__caddr_t __addr, size_t __len,
- int __prot, int __flags, int __fd, __off_t __offset));
+extern __caddr_t __mmap __P ((__caddr_t __addr, size_t __len, int __prot,
+ int __flags, int __fd, __off_t __offset));
+extern __caddr_t mmap __P ((__caddr_t __addr, size_t __len, int __prot,
+ int __flags, int __fd, __off_t __offset));
/* Deallocate any mapping for the region starting at ADDR and extending LEN
bytes. Returns 0 if successful, -1 for errors (and sets errno). */
-int __munmap __P ((__caddr_t __addr, size_t __len));
-int munmap __P ((__caddr_t __addr, size_t __len));
+extern int __munmap __P ((__caddr_t __addr, size_t __len));
+extern int munmap __P ((__caddr_t __addr, size_t __len));
/* 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). */
-int __mprotect __P ((__caddr_t __addr, size_t __len, int __prot));
-int mprotect __P ((__caddr_t __addr, size_t __len, int __prot));
+extern int __mprotect __P ((__caddr_t __addr, size_t __len, int __prot));
+extern int mprotect __P ((__caddr_t __addr, size_t __len, int __prot));
/* 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. */
-int msync __P ((__caddr_t __addr, size_t __len, int __flags));
+extern int msync __P ((__caddr_t __addr, size_t __len, int __flags));
+#ifdef __USE_BSD
/* Advise the system about particular usage patterns the program follows
for the region starting at ADDR and extending LEN bytes. */
-int madvise __P ((__caddr_t __addr, size_t __len, int __advice));
+extern int madvise __P ((__caddr_t __addr, size_t __len, int __advice));
+#endif
__END_DECLS