1 files changed, 3 insertions, 9 deletions

diff --git a/src/firejail/netfilter.c b/src/firejail/netfilter.c
index ef4915f15..ed411313a 100644
--- a/src/firejail/netfilter.c
+++ b/src/firejail/netfilter.c
@@ -47,14 +47,8 @@ void check_netfilter_file(const char *fname) {
         EUID_ASSERT();
         invalid_filename(fname);
         
-        if (is_dir(fname) || is_link(fname) || strstr(fname, "..")) {
-                fprintf(stderr, "Error: invalid network filter file\n");
-                exit(1);
-        }
-
-        // access call checks as real UID/GID, not as effective UID/GID
-        if (access(fname, R_OK)) {
-                fprintf(stderr, "Error: cannot access network filter file\n");
+        if (is_dir(fname) || is_link(fname) || strstr(fname, "..") || access(fname, R_OK )) {
+                fprintf(stderr, "Error: invalid network filter file %s\n", fname);
                 exit(1);
         }
 }
@@ -138,7 +132,7 @@ void netfilter6(const char *fname) {
         char *filter = read_text_file_or_exit(fname);
         FILE *fp = fopen(SBOX_STDIN_FILE, "w");
         if (!fp) {
-                fprintf(stderr, "Error: cannot open /tmp/netfilter6 file\n");
+                fprintf(stderr, "Error: cannot open %s\n", SBOX_STDIN_FILE);
                 exit(1);
         }
         fprintf(fp, "%s\n", filter);