[LTP] [PATCH 1/3] configure: check if process_vm_read/write is supported

[LTP] [PATCH 1/3] configure: check if process_vm_read/write is supported

[Jan Stancek]

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CMA (cross memory attach) patch introduced 2 new syscalls:
process_vm_readv
process_vm_writev

Check in configure if these are supported.

Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
 configure.ac  |    1 +
 m4/ltp-cma.m4 |   67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 68 insertions(+)
 create mode 100644 m4/ltp-cma.m4



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diff --git a/configure.ac b/configure.ac
index 1696df0..55ee132 100644
--- a/configure.ac
+++ b/configure.ac
@@ -166,5 +166,6 @@ LTP_CHECK_MADVISE
 LTP_CHECK_ACL_SUPPORT
 LTP_CHECK_FS_IOC_FLAGS
 LTP_CHECK_MREMAP_FIXED
+LTP_CHECK_SYSCALLS_CMA
 
 AC_OUTPUT
diff --git a/m4/ltp-cma.m4 b/m4/ltp-cma.m4
new file mode 100644
index 0000000..8867a5e
--- /dev/null
+++ b/m4/ltp-cma.m4
@@ -0,0 +1,67 @@
+dnl
+dnl Copyright (c) Linux Test Project, 2012
+dnl
+dnl This program is free software;  you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY;  without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+dnl the GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program;  if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+dnl
+
+dnl
+dnl LTP_CHECK_SYSCALLS_CMA
+dnl ----------------------------
+dnl
+dnl
+dnl
+
+AC_DEFUN([LTP_CHECK_SYSCALLS_CMA],[
+_LTP_CHECK_SYSCALL_PROCESS_VM_READV
+_LTP_CHECK_SYSCALL_PROCESS_VM_WRITEV
+])
+
+dnl _LTP_CHECK_SYSCALL_PROCESS_VM_READV
+AC_DEFUN([_LTP_CHECK_SYSCALL_PROCESS_VM_READV],[dnl
+AC_MSG_CHECKING([for process_vm_readv])
+AC_LINK_IFELSE([AC_LANG_SOURCE([
+#include <sys/uio.h>
+#include <stdlib.h>
+int main(void) {
+        (void) process_vm_readv(0, NULL, 0, NULL, 0 ,0);
+        return 0;
+}])],[has_process_vm_readv="yes"])
+if test "x$has_process_vm_readv" = "xyes"; then
+        AC_DEFINE(HAVE_PROCESS_VM_READV,1,[Define to 1 if process_vm_readv is present])
+	AC_MSG_RESULT(yes)
+else
+        AC_DEFINE(HAVE_PROCESS_VM_READV,0,[Define to 1 if process_vm_readv is present])
+	AC_MSG_RESULT(no)
+fi
+])
+
+dnl _LTP_CHECK_SYSCALL_PROCESS_VM_WRITEV
+AC_DEFUN([_LTP_CHECK_SYSCALL_PROCESS_VM_WRITEV],[dnl
+AC_MSG_CHECKING([for process_vm_writev])
+AC_LINK_IFELSE([AC_LANG_SOURCE([
+#include <sys/uio.h>
+#include <stdlib.h>
+int main(void) {
+        (void) process_vm_writev(0, NULL, 0, NULL, 0 ,0);
+        return 0;
+}])],[has_process_vm_writev="yes"])
+if test "x$has_process_vm_writev" = "xyes"; then
+        AC_DEFINE(HAVE_PROCESS_VM_WRITEV,1,[Define to 1 if process_vm_writev is present])
+	AC_MSG_RESULT(yes)
+else
+        AC_DEFINE(HAVE_PROCESS_VM_WRITEV,0,[Define to 1 if process_vm_writev is present])
+	AC_MSG_RESULT(no)
+fi
+])


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