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Diffstat (limited to 'sysdeps/unix/sysv/linux/pwrite64.c')
-rw-r--r--sysdeps/unix/sysv/linux/pwrite64.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c
index b6ebba154b..cc92de1d76 100644
--- a/sysdeps/unix/sysv/linux/pwrite64.c
+++ b/sysdeps/unix/sysv/linux/pwrite64.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -23,13 +23,17 @@
#include <sysdep.h>
#include <sys/syscall.h>
-#ifdef __NR_pwrite
+#include "kernel-features.h"
+
+#if defined __NR_pwrite || __ASSUME_PWRITE_SYSCALL > 0
extern ssize_t __syscall_pwrite64 (int fd, const void *buf, size_t count,
off_t offset_hi, off_t offset_lo);
+# if __ASSUME_PWRITE_SYSCALL == 0
static ssize_t __emulate_pwrite64 (int fd, const void *buf, size_t count,
off64_t offset) internal_function;
+# endif
ssize_t
@@ -44,16 +48,21 @@ __pwrite64 (fd, buf, count, offset)
/* First try the syscall. */
result = INLINE_SYSCALL (pwrite, 5, fd, buf, count, (off_t) (offset >> 32),
(off_t) (offset & 0xffffffff));
+# if __ASSUME_PWRITE_SYSCALL == 0
if (result == -1 && errno == ENOSYS)
/* No system call available. Use the emulation. */
result = __emulate_pwrite64 (fd, buf, count, offset);
+# endif
return result;
}
weak_alias (__pwrite64, pwrite64)
-#define __pwrite64(fd, buf, count, offset) \
+# define __pwrite64(fd, buf, count, offset) \
static internal_function __emulate_pwrite64 (fd, buf, count, offset)
#endif
-#include <sysdeps/posix/pwrite64.c>
+
+#if __ASSUME_PWRITE_SYSCALL == 0
+# include <sysdeps/posix/pwrite64.c>
+#endif