tighten secutiry

1 files changed, 5 insertions, 1 deletions

diff --git a/src/include/euid_common.h b/src/include/euid_common.h
index b6d341bf4..de5572fb1 100644
--- a/src/include/euid_common.h
+++ b/src/include/euid_common.h
@@ -37,11 +37,15 @@ extern uid_t firejail_uid;
 static inline void EUID_ROOT(void) {
         if (seteuid(0) == -1)
                 fprintf(stderr, "Warning: cannot switch euid to root\n");
+        if (setegid(0) == -1)
+                fprintf(stderr, "Warning: cannot switch egid to root\n");
 }
 
 static inline void EUID_USER(void) {
         if (seteuid(firejail_uid) == -1)
-                fprintf(stderr, "Warning: cannot switch euid to user\n");
+                errExit("seteuid");
+        if (setegid(firejail_uid) == -1)
+                errExit("setegid");
 }
 
 static inline void EUID_PRINT(void) {