From aa67abb537f22db097db632d98212fa951bfeef0 Mon Sep 17 00:00:00 2001
From: Minep <lunaixsky@qq.com>
Date: Mon, 29 Apr 2024 19:51:50 +0100
Subject: [PATCH] * fix an issue that execve attempts to parse directory as elf
 file.

---
 lunaix-os/includes/lunaix/fs.h | 6 ++++++
 lunaix-os/kernel/exe/exec.c    | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/lunaix-os/includes/lunaix/fs.h b/lunaix-os/includes/lunaix/fs.h
index 0e2169e..0240c96 100644
--- a/lunaix-os/includes/lunaix/fs.h
+++ b/lunaix-os/includes/lunaix/fs.h
@@ -298,6 +298,12 @@ struct pcache_pg
     u32_t len;
 };
 
+static inline bool
+check_itype_any(struct v_inode* inode, unsigned int type_mask)
+{
+    return !!(inode->itype & type_mask) || !type_mask;
+}
+
 void
 fsm_init();
 
diff --git a/lunaix-os/kernel/exe/exec.c b/lunaix-os/kernel/exe/exec.c
index 6105c1c..813d5c3 100644
--- a/lunaix-os/kernel/exe/exec.c
+++ b/lunaix-os/kernel/exe/exec.c
@@ -201,6 +201,11 @@ exec_load_byname(struct exec_container* container, const char* filename)
         goto done;
     }
 
+    if (!check_itype_any(dnode->inode, F_FILE)) {
+        errno = EISDIR;
+        goto done;
+    }
+
     errno = exec_load(container, file);
 
     // It shouldn't matter which pid we passed. As the only reader is 
-- 
2.27.0