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-rw-r--r--arch/i386/kernel/sys_i386.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/i386/kernel/sys_i386.c b/arch/i386/kernel/sys_i386.c
index dc6e3bbeba3..4048397f174 100644
--- a/arch/i386/kernel/sys_i386.c
+++ b/arch/i386/kernel/sys_i386.c
@@ -21,6 +21,7 @@
#include <linux/utsname.h>
#include <asm/uaccess.h>
+#include <asm/unistd.h>
#include <asm/ipc.h>
/*
@@ -248,3 +249,17 @@ asmlinkage int sys_olduname(struct oldold_utsname __user * name)
return error;
}
+
+
+/*
+ * Do a system call from kernel instead of calling sys_execve so we
+ * end up with proper pt_regs.
+ */
+int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+{
+ long __res;
+ asm volatile ("push %%ebx ; movl %2,%%ebx ; int $0x80 ; pop %%ebx"
+ : "=a" (__res)
+ : "0" (__NR_execve),"ri" (filename),"c" (argv), "d" (envp) : "memory");
+ return __res;
+}