[PATCH v2 11/15] selftests/nolibc: prepare /tmp for tmpfs or ramfs

[Zhangjin Wu]

Let's create a /tmp directory and mount tmpfs there, if tmpfs is not
mountable, use ramfs as tmpfs.

tmpfs will be used instead of procfs for some tests.

Signed-off-by: Zhangjin Wu <falcon@xxxxxxxxxxx>
---
 tools/testing/selftests/nolibc/nolibc-test.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index c0f5302ada5d..8e3e2792f5e3 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -1054,6 +1054,10 @@ int prepare(void)
 		}
 	}
 
+	/* try to mount /tmp if not mounted, if not mountable, use ramfs as tmpfs */
+	if (stat("/tmp/.", &stat_buf) == 0 || mkdir("/tmp", 0755) == 0)
+		mount("none", "/tmp", "tmpfs", 0, 0);
+
 	return 0;
 }
 
-- 
2.25.1