2.5-18.1

1 files changed, 93 insertions, 3 deletions

diff --git a/sysdeps/unix/sysv/linux/sh/pread.c b/sysdeps/unix/sysv/linux/sh/pread.c
index 9ded53ebaa..0186e40c9c 100644
--- a/sysdeps/unix/sysv/linux/sh/pread.c
+++ b/sysdeps/unix/sysv/linux/sh/pread.c
@@ -1,3 +1,93 @@
-#define NO_SGIDEFS_H
-#define _MIPS_SIM -1
-#include <sysdeps/unix/sysv/linux/mips/pread.c>
+/* Copyright (C) 1997, 1998, 2000, 2002, 2003, 2004, 2006
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   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.  */
+
+#include <assert.h>
+#include <errno.h>
+#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
+#  error "__NR_pread and __NR_pread64 both defined???"
+# endif
+# define __NR_pread __NR_pread64
+#endif
+
+#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0
+
+# if __ASSUME_PREAD_SYSCALL == 0
+static ssize_t __emulate_pread (int fd, void *buf, size_t count,
+				off_t offset) internal_function;
+# endif
+
+ssize_t
+__libc_pread (fd, buf, count, offset)
+     int fd;
+     void *buf;
+     size_t count;
+     off_t offset;
+{
+  ssize_t result;
+
+  if (SINGLE_THREAD_P)
+    {
+      /* First try the syscall.  */
+      result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0,
+			       __LONG_LONG_PAIR (offset >> 31, offset));
+# if __ASSUME_PREAD_SYSCALL == 0
+      if (result == -1 && errno == ENOSYS)
+        /* No system call available.  Use the emulation.  */
+        result = __emulate_pread (fd, buf, count, offset);
+# endif
+      return result;
+    }
+
+  int oldtype = LIBC_CANCEL_ASYNC ();
+
+  /* First try the syscall.  */
+  result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0,
+			   __LONG_LONG_PAIR (offset >> 31, offset));
+# if __ASSUME_PREAD_SYSCALL == 0
+  if (result == -1 && errno == ENOSYS)
+    /* No system call available.  Use the emulation.  */
+    result = __emulate_pread (fd, buf, count, offset);
+# endif
+
+  LIBC_CANCEL_RESET (oldtype);
+
+  return result;
+}
+
+strong_alias (__libc_pread, __pread)
+weak_alias (__libc_pread, pread)
+
+# define __libc_pread(fd, buf, count, offset) \
+     static internal_function __emulate_pread (fd, buf, count, offset)
+#endif
+
+#if __ASSUME_PREAD_SYSCALL == 0
+# include <sysdeps/posix/pread.c>
+#endif