Code drop from //branches/cupcake/...@124589
diff --git a/libc/unistd/pread.c b/libc/unistd/pread.c
index 7bfaeaa..d2f71f7 100644
--- a/libc/unistd/pread.c
+++ b/libc/unistd/pread.c
@@ -11,39 +11,24 @@
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Google Inc. nor the names of its contributors may
+ * be used to endorse or promote products derived from this software
+ * without specific prior written permission.
*
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
+*/
#include <sys/types.h>
#include <unistd.h>
-#include <errno.h>
-/*
- * Non-atomic emulation of the pread system call.
- */
-ssize_t pread(int fd, void *buf, size_t count, off_t offset)
+extern int __pread64(int fd, void *buf, size_t nbytes, off_t lo, off_t hi);
+
+ssize_t pread(int fd, void *buf, size_t nbytes, off_t offset)
{
- int save_errno;
- ssize_t nread;
- off_t save_offset = lseek(fd, offset, SEEK_SET);
- if (save_offset < 0) {
- return -1;
- }
- nread = read(fd, buf, count);
- save_errno = errno;
- /* Even if the read failed, try to restore the seek pointer */
- lseek(fd, save_offset, SEEK_SET);
- errno = save_errno;
- return nread;
+ return __pread64(fd, buf, nbytes, offset, 0);
}
+