return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid);
}
-/*
- * This gets run with %si containing the
- * function to call, and %di containing
- * the "args".
- */
-extern void kernel_thread_helper(void);
-
-/*
- * Create a kernel thread
- */
-int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
-{
- struct pt_regs regs;
-
- memset(®s, 0, sizeof(regs));
-
- regs.si = (unsigned long) fn;
- regs.di = (unsigned long) arg;
-
-#ifdef CONFIG_X86_32
- regs.ds = __USER_DS;
- regs.es = __USER_DS;
- regs.fs = __KERNEL_PERCPU;
- regs.gs = __KERNEL_STACK_CANARY;
-#else
- regs.ss = __KERNEL_DS;
-#endif
-
- regs.orig_ax = -1;
- regs.ip = (unsigned long) kernel_thread_helper;
- regs.cs = __KERNEL_CS | get_kernel_rpl();
- regs.flags = X86_EFLAGS_IF | X86_EFLAGS_BIT1;
-
- /* Ok, create the new process.. */
- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL);
-}
-EXPORT_SYMBOL(kernel_thread);
-
-/*
- * sys_execve() executes a new program.
- */
-long sys_execve(const char __user *name,
- const char __user *const __user *argv,
- const char __user *const __user *envp, struct pt_regs *regs)
-{
- long error;
- char *filename;
-
- filename = getname(name);
- error = PTR_ERR(filename);
- if (IS_ERR(filename))
- return error;
- error = do_execve(filename, argv, envp, regs);
-
-#ifdef CONFIG_X86_32
- if (error == 0) {
- /* Make sure we don't return using sysenter.. */
- set_thread_flag(TIF_IRET);
- }
-#endif
-
- putname(filename);
- return error;
-}
-
/*
* Idle related variables and functions
*/