-/* Copyright (C) 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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. */
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
#include <errno.h>
+#ifndef NO_SGIDEFS_H
+#include <sgidefs.h>
+#endif
#include <unistd.h>
#include <endian.h>
#include <sysdep-cancel.h>
#include <sys/syscall.h>
-#include <bp-checks.h>
-
-#include <kernel-features.h>
#ifdef __NR_pread64 /* Newer kernels renamed but it's the same. */
# ifdef __NR_pread
# define __NR_pread __NR_pread64
#endif
-#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0
-
-# if __ASSUME_PREAD_SYSCALL == 0
-static ssize_t __emulate_pread64 (int fd, void *buf, size_t count,
- off64_t offset) internal_function;
-# endif
-
-extern ssize_t __syscall_pread (int fd, void *__unbounded buf, size_t count,
- int dummy,
-#if defined _ABI64 && _MIPS_SIM == _ABI64
- off_t offset
-#else
- off_t offset_hi, off_t offset_lo
-#endif
- );
-
-
ssize_t
-__libc_pread64 (fd, buf, count, offset)
- int fd;
- void *buf;
- size_t count;
- off64_t offset;
+__libc_pread64 (int fd, void *buf, size_t count, off64_t offset)
{
- ssize_t result;
-
-
- if (SINGLE_THREAD_P)
- {
- /* First try the syscall. */
-#if defined _ABI64 && _MIPS_SIM == _ABI64
- result = INLINE_SYSCALL (pread, 5, fd, CHECK_N (buf, count), count, 0,
- offset);
+#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
+ return SYSCALL_CANCEL (pread, fd, buf, count, offset);
#else
- result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0,
- __LONG_LONG_PAIR ((off_t) (offset >> 32),
- (off_t) (offset & 0xffffffff)));
+ return SYSCALL_CANCEL (pread, fd, buf, count, 0,
+ __LONG_LONG_PAIR ((off_t) (offset >> 32),
+ (off_t) (offset & 0xffffffff)));
#endif
-# 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;
- }
-
- int oldtype = LIBC_CANCEL_ASYNC ();
-
- /* First try the syscall. */
-#if defined _ABI64 && _MIPS_SIM == _ABI64
- result = INLINE_SYSCALL (pread, 5, fd, CHECK_N (buf, count), count, 0,
- offset);
-#else
- result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0,
- __LONG_LONG_PAIR ((off_t) (offset >> 32),
- (off_t) (offset & 0xffffffff)));
-#endif
-# 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
-
- LIBC_CANCEL_RESET (oldtype);
-
- return result;
}
weak_alias (__libc_pread64, __pread64)
weak_alias (__libc_pread64, pread64)
-
-# define __libc_pread64(fd, buf, count, offset) \
- static internal_function __emulate_pread64 (fd, buf, count, offset)
-#endif
-
-#if __ASSUME_PREAD_SYSCALL == 0
-# include <sysdeps/posix/pread64.c>
-#endif