1 files changed, 15 insertions, 30 deletions
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);
 }
+