kernel: Remove redundant checks

kernel/kernel_umount.c

@@ -18,6 +18,7 @@
 #include "ksud.h"
 
 #include "umount_manager.h"
+#include "sulog.h"
 
 static bool ksu_kernel_umount_enabled = true;
 
@@ -119,23 +120,6 @@ static void umount_tw_func(struct callback_head *cb)
     kfree(tw);
 }
 
-static inline bool is_appuid(uid_t uid)
-{
-#define PER_USER_RANGE 100000
-#define FIRST_APPLICATION_UID 10000
-#define LAST_APPLICATION_UID 19999
-
-    uid_t appid = uid % PER_USER_RANGE;
-    return appid >= FIRST_APPLICATION_UID && appid <= LAST_APPLICATION_UID;
-}
-
-static inline bool is_unsupported_uid(uid_t uid)
-{
-#define LAST_APPLICATION_UID 19999
-    uid_t appid = uid % 100000;
-    return appid > LAST_APPLICATION_UID;
-}
-
 int ksu_handle_umount(uid_t old_uid, uid_t new_uid)
 {
     struct umount_tw *tw;
@@ -149,11 +133,6 @@ int ksu_handle_umount(uid_t old_uid, uid_t new_uid)
         return 0;
     }
 
-    if (!is_appuid(new_uid) || is_unsupported_uid(new_uid)) {
-        pr_info("handle setuid ignore non application or isolated uid: %d\n", new_uid);
-        return 0;
-    }
-
     if (!ksu_uid_should_umount(new_uid)) {
         return 0;
     } else {
@@ -168,6 +147,9 @@ int ksu_handle_umount(uid_t old_uid, uid_t new_uid)
         pr_info("handle umount ignore non zygote child: %d\n", current->pid);
         return 0;
     }
+#if __SULOG_GATE
+    ksu_sulog_report_syscall(new_uid, NULL, "setuid", NULL);
+#endif
     // umount the target mnt
     pr_info("handle umount for uid: %d, pid: %d\n", new_uid, current->pid);
 

kernel/setuid_hook.c

@@ -43,8 +43,6 @@
 #include "kernel_umount.h"
 #include "app_profile.h"
 
-#include "sulog.h"
-
 static bool ksu_enhanced_security_enabled = false;
 
 static int enhanced_security_feature_get(u64 *value)
@@ -178,10 +176,6 @@ int ksu_handle_setresuid(uid_t ruid, uid_t euid, uid_t suid)
 
     // Handle kernel umount
     ksu_handle_umount(old_uid, new_uid);
-    
-#if __SULOG_GATE
-    ksu_sulog_report_syscall(new_uid, NULL, "setuid", NULL);
-#endif
 
     return 0;
 }