mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
c5f2420a06
Move execve() into arch/avr32/kernel/sys_avr32.c, rename it to kernel_execve() and return the syscall return value directly without setting errno. This also gets rid of the __KERNEL_SYSCALLS__ stuff from unistd.h and expands #ifdef __KERNEL__ to cover everything in unistd.h except the __NR_foo definitions. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2004-2006 Atmel Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/errno.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/file.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/unistd.h>
|
|
|
|
#include <asm/mman.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
asmlinkage int sys_pipe(unsigned long __user *filedes)
|
|
{
|
|
int fd[2];
|
|
int error;
|
|
|
|
error = do_pipe(fd);
|
|
if (!error) {
|
|
if (copy_to_user(filedes, fd, sizeof(fd)))
|
|
error = -EFAULT;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
|
|
unsigned long prot, unsigned long flags,
|
|
unsigned long fd, off_t offset)
|
|
{
|
|
int error = -EBADF;
|
|
struct file *file = NULL;
|
|
|
|
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
|
|
if (!(flags & MAP_ANONYMOUS)) {
|
|
file = fget(fd);
|
|
if (!file)
|
|
return error;
|
|
}
|
|
|
|
down_write(¤t->mm->mmap_sem);
|
|
error = do_mmap_pgoff(file, addr, len, prot, flags, offset);
|
|
up_write(¤t->mm->mmap_sem);
|
|
|
|
if (file)
|
|
fput(file);
|
|
return error;
|
|
}
|
|
|
|
int kernel_execve(const char *file, char **argv, char **envp)
|
|
{
|
|
register long scno asm("r8") = __NR_execve;
|
|
register long sc1 asm("r12") = (long)file;
|
|
register long sc2 asm("r11") = (long)argv;
|
|
register long sc3 asm("r10") = (long)envp;
|
|
|
|
asm volatile("scall"
|
|
: "=r"(sc1)
|
|
: "r"(scno), "0"(sc1), "r"(sc2), "r"(sc3)
|
|
: "cc", "memory");
|
|
return sc1;
|
|
}
|