[PATCH v2 04/10] sandbox/seunshare: make -W/-P .. check exact

Given the strchr(..., "/") checks to prevent any pathname separator
characters from being embedded in the -W/-P names, we only need to
further check for ".." exactly via strcmp() rather than a substring
check via strstr().

Signed-off-by: Stephen Smalley <[email protected]>
---
 sandbox/seunshare.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sandbox/seunshare.c b/sandbox/seunshare.c
index 1e7822e5..37a24c57 100644
--- a/sandbox/seunshare.c
+++ b/sandbox/seunshare.c
@@ -881,10 +881,10 @@ int main(int argc, char **argv)
 		}
 	}
 
-	if ((wayland_display &&
-	     (strchr(wayland_display, '/') || strstr(wayland_display, ".."))) ||
-	    (pipewire_socket &&
-	     (strchr(pipewire_socket, '/') || strstr(pipewire_socket, "..")))) {
+	if ((wayland_display && (strchr(wayland_display, '/') ||
+				 !strcmp(wayland_display, ".."))) ||
+	    (pipewire_socket && (strchr(pipewire_socket, '/') ||
+				 !strcmp(pipewire_socket, "..")))) {
 		fprintf(stderr,
 			_("Error: -W/-P must be a socket name, not a path\n"));
 		return -1;
-- 
2.55.0