1 /*
2  * This file contains various random system calls that
3  * have a non-standard calling sequence on the Linux/i386
4  * platform.
5  */
6 
7 #include <linux/errno.h>
8 #include <linux/sched.h>
9 #include <linux/mm.h>
10 #include <linux/fs.h>
11 #include <linux/smp.h>
12 #include <linux/sem.h>
13 #include <linux/msg.h>
14 #include <linux/shm.h>
15 #include <linux/stat.h>
16 #include <linux/syscalls.h>
17 #include <linux/mman.h>
18 #include <linux/file.h>
19 #include <linux/utsname.h>
20 #include <linux/ipc.h>
21 
22 #include <linux/uaccess.h>
23 #include <linux/unistd.h>
24 
25 #include <asm/syscalls.h>
26 
27 /*
28  * Do a system call from kernel instead of calling sys_execve so we
29  * end up with proper pt_regs.
30  */
kernel_execve(const char * filename,const char * const argv[],const char * const envp[])31 int kernel_execve(const char *filename,
32 		  const char *const argv[],
33 		  const char *const envp[])
34 {
35 	long __res;
36 	asm volatile ("int $0x80"
37 	: "=a" (__res)
38 	: "0" (__NR_execve), "b" (filename), "c" (argv), "d" (envp) : "memory");
39 	return __res;
40 }
41