When executing "make -C tools/testing/selftests/pid_namespace", there exist many errors such as:
$ make -C tools/testing/selftests/pid_namespace ... pid_max.c:42:15: error: implicit declaration of function 'mount' [-Wimplicit-function-declaration] ... pid_max.c:42:36: error: 'MS_PRIVATE' undeclared (first use in this function); did you mean 'MAP_PRIVATE'? ... pid_max.c:42:49: error: 'MS_REC' undeclared (first use in this function) ...
Include sys/mount.h to fix the errors, tested on x86_64 and LoongArch.
Reported-by: Haiyong Sun sunhaiyong@loongson.cn Fixes: 615ab43b838b ("tests/pid_namespace: add pid_max tests") Signed-off-by: Tiezhu Yang yangtiezhu@loongson.cn --- tools/testing/selftests/pid_namespace/pid_max.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/pid_namespace/pid_max.c b/tools/testing/selftests/pid_namespace/pid_max.c index 51c414faabb0..96f274f0582b 100644 --- a/tools/testing/selftests/pid_namespace/pid_max.c +++ b/tools/testing/selftests/pid_namespace/pid_max.c @@ -10,6 +10,7 @@ #include <stdlib.h> #include <string.h> #include <syscall.h> +#include <sys/mount.h> #include <sys/wait.h>
#include "../kselftest_harness.h"