diff options
| author | Ulrich Drepper <drepper@redhat.com> | 1999-05-26 23:37:38 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1999-05-26 23:37:38 +0000 |
| commit | 958f238f3619373d3dbc106d3cda3c467b3419b1 (patch) | |
| tree | 9d15d47658aeaae08ee7e5e5e9d4a63d034caa49 /sysdeps/unix/sysv/linux/pread64.c | |
| parent | 475e390e80a950a8746dc0b88341742dc99014e4 (diff) | |
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.c | 17 |
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 |