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authorUlrich Drepper <drepper@redhat.com>1999-05-26 23:37:38 +0000
committerUlrich Drepper <drepper@redhat.com>1999-05-26 23:37:38 +0000
commit958f238f3619373d3dbc106d3cda3c467b3419b1 (patch)
tree9d15d47658aeaae08ee7e5e5e9d4a63d034caa49 /sysdeps/unix/sysv/linux/pread64.c
parent475e390e80a950a8746dc0b88341742dc99014e4 (diff)
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Update.
1999-05-26  Ulrich Drepper  <drepper@cygnus.com>

	* config.h.in: Add __LINUX_KERNEL_VERSION.
	* configure.in: Recognize --enable-kernel.
	* sysdeps/unix/sysv/linux/configure.in: Check for correct kernel
	headers if --enable-kernel is given and set __LINUX_KERNEL_VERSION
	appropriately.
	* sysdeps/unix/sysv/linux/init-first.c: If minimal kernel version is
	given perform runtime test.

	* sysdeps/unix/sysv/linux/kernel-features.h: New file.
	* sysdeps/unix/sysv/linux/getcwd.c: Elide compatibility code if
	minimal supported kernel is known to have the feature.
	* sysdeps/unix/sysv/linux/poll.c: Likewise.
	* sysdeps/unix/sysv/linux/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/seteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/sigprocmask.c: Likewise.
	* sysdeps/unix/sysv/linux/sigsuspend.c: Likewise.
	* sysdeps/unix/sysv/linux/testrtsig.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/pwrite64.c: Likewise.

	* sysdeps/unix/sysv/linux/sysctl.c: Add __sysctl alias.
Diffstat (limited to 'sysdeps/unix/sysv/linux/pread64.c')
-rw-r--r--sysdeps/unix/sysv/linux/pread64.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/pread64.c b/sysdeps/unix/sysv/linux/pread64.c
index b8e117770f..fc4f7f24a0 100644
--- a/sysdeps/unix/sysv/linux/pread64.c
+++ b/sysdeps/unix/sysv/linux/pread64.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_pread
+#include "kernel-features.h"
+
+#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0
 
 extern ssize_t __syscall_pread (int fd, void *buf, size_t count,
 				off_t offset_hi, off_t offset_lo);
 
+# if __ASSUME_PREAD_SYSCALL == 0
 static ssize_t __emulate_pread64 (int fd, void *buf, size_t count,
 				  off64_t offset) internal_function;
+# endif
 
 
 ssize_t
@@ -44,16 +48,21 @@ __pread64 (fd, buf, count, offset)
   /* First try the syscall.  */
   result = INLINE_SYSCALL (pread, 5, fd, buf, count, (off_t) (offset >> 32),
 			   (off_t) (offset & 0xffffffff));
+# if __ASSUME_PREAD_SYSCALL == 0
   if (result == -1 && errno == ENOSYS)
     /* No system call available.  Use the emulation.  */
     result = __emulate_pread64 (fd, buf, count, offset);
+# endif
 
   return result;
 }
 
 weak_alias (__pread64, pread64)
 
-#define __pread64(fd, buf, count, offset) \
+# define __pread64(fd, buf, count, offset) \
      static internal_function __emulate_pread64 (fd, buf, count, offset)
 #endif
-#include <sysdeps/posix/pread64.c>
+
+# if __ASSUME_PREAD_SYSCALL == 0
+# include <sysdeps/posix/pread64.c>
+#endif