S390: Fix building with --disable-mutli-arch [BZ #31196]

[platform/upstream/glibc.git] / debug / pread64_chk.c

diff --git a/debug/pread64_chk.c b/debug/pread64_chk.c
index 5402e05..e25407a 100644 (file)
--- a/debug/pread64_chk.c
+++ b/debug/pread64_chk.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2005-2024 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -12,9 +12,8 @@
    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
+   <https://www.gnu.org/licenses/>.  */
 
 #include <unistd.h>
 #include <sys/param.h>
@@ -23,11 +22,8 @@
 ssize_t
 __pread64_chk (int fd, void *buf, size_t nbytes, off64_t offset, size_t buflen)
 {
-  /* In case NBYTES is greater than BUFLEN, we read BUFLEN+1 bytes.
-     This might overflow the buffer but the damage is reduced to just
-     one byte.  And the program will terminate right away.  */
-  ssize_t n = __pread64 (fd, buf, offset, MIN (nbytes, buflen + 1));
-  if (n > 0 && (size_t) n > buflen)
+  if (nbytes > buflen)
     __chk_fail ();
-  return n;
+
+  return __libc_pread64 (fd, buf, nbytes, offset);
 }