Quite a few of architures (e.g. blackfin, cris, frv ...) do not support
memfd_create system call which is used in prime_new(). So define a dummy
one.
The related error (with allmodconfig under blackfin):
CC [M] samples/kfifo/inttype-example.o
samples/kdbus/kdbus-workers.c: In function ‘prime_new’:
samples/kdbus/kdbus-workers.c:930:18: error: ‘__NR_memfd_create’ undeclared
(first use in this function)
p->fd = syscall(__NR_memfd_create, "prime-area", MFD_CLOEXEC);
^
samples/kdbus/kdbus-workers.c:930:18: note: each undeclared identifier is
reported only once for each function it appears in
make[2]: *** [samples/kdbus/kdbus-workers] Error 1
Signed-off-by: Chen Gang <gang.chen.5...@gmail.com>
---
samples/kdbus/kdbus-workers.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/samples/kdbus/kdbus-workers.c b/samples/kdbus/kdbus-workers.c
index d331e01..0affd23 100644
--- a/samples/kdbus/kdbus-workers.c
+++ b/samples/kdbus/kdbus-workers.c
@@ -910,6 +910,8 @@ exit:
*
*/
+#ifdef __NR_memfd_create
+
static int prime_new(struct prime **out)
{
struct prime *p;
@@ -954,6 +956,15 @@ error:
return r;
}
+#else
+
+static int prime_new(struct prime **out)
+{
+ return err("the architecture does not support memfd_create");
+}
+
+#endif
+
static void prime_free(struct prime *p)
{
if (!p)
--
1.9.3
--
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