about summary refs log tree commit diff
path: root/support/xmmap.c
diff options
context:
space:
mode:
authorFlorian Weimer <fweimer@redhat.com>2017-01-27 06:53:19 +0100
committerFlorian Weimer <fweimer@redhat.com>2017-01-27 06:53:20 +0100
commitfaf0e9c84119742dd9ebb79060faa22c52ae80a1 (patch)
treeaaf2df0e207bde2a4dfe6c9623e013364642a076 /support/xmmap.c
parent5653ab12b4ae15b32d41de7c56b2a4626cd0437a (diff)
downloadglibc-faf0e9c84119742dd9ebb79060faa22c52ae80a1.tar.gz
glibc-faf0e9c84119742dd9ebb79060faa22c52ae80a1.tar.xz
glibc-faf0e9c84119742dd9ebb79060faa22c52ae80a1.zip
nptl: Add tst-robust-fork
Diffstat (limited to 'support/xmmap.c')
-rw-r--r--support/xmmap.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/support/xmmap.c b/support/xmmap.c
new file mode 100644
index 0000000000..435b1eb733
--- /dev/null
+++ b/support/xmmap.c
@@ -0,0 +1,31 @@
+/* mmap with error checking.
+   Copyright (C) 2016-2017 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
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <sys/mman.h>
+
+void *
+xmmap (void *addr, size_t length, int prot, int flags, int fd)
+{
+  void *result = mmap (addr, length, prot, flags, fd, 0);
+  if (result == MAP_FAILED)
+    FAIL_EXIT1 ("mmap of %zu bytes, prot=0x%x, flags=0x%x: %m",
+                length, prot, flags);
+  return result;
+}