---

yaml
---
r: 332974
b: refs/heads/master
c: 282124d
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a3460a59747cfddfa7be4758e5ef08bf5d751d59
+refs/heads/master: 282124d18626379a20b41d25e0c580f290cd09d4

trunk/fs/exec.c

@@ -2318,3 +2318,25 @@ int dump_seek(struct file *file, loff_t off)
 	return ret;
 }
 EXPORT_SYMBOL(dump_seek);
+
+#ifdef __ARCH_WANT_KERNEL_EXECVE
+int kernel_execve(const char *filename,
+		  const char *const argv[],
+		  const char *const envp[])
+{
+	struct pt_regs *p = current_pt_regs();
+	int ret;
+
+	ret = do_execve(filename,
+			(const char __user *const __user *)argv,
+			(const char __user *const __user *)envp, p);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * We were successful.  We won't be returning to our caller, but
+	 * instead to user space by manipulating the kernel stack.
+	 */
+	ret_from_kernel_execve(p);
+}
+#endif

trunk/include/linux/binfmts.h

@@ -19,6 +19,7 @@ struct pt_regs;
 
 #ifdef __KERNEL__
 #include <linux/sched.h>
+#include <linux/unistd.h>
 #include <asm/exec.h>
 
 #define CORENAME_MAX_SIZE 128
@@ -137,5 +138,9 @@ extern void do_coredump(long signr, int exit_code, struct pt_regs *regs);
 extern void set_binfmt(struct linux_binfmt *new);
 extern void free_bprm(struct linux_binprm *);
 
+#ifdef __ARCH_WANT_KERNEL_EXECVE
+extern void ret_from_kernel_execve(struct pt_regs *normal) __noreturn;
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_BINFMTS_H */