arch/um/kernel/syscall.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
   4  */
   5
   6 #include <linux/file.h>
   7 #include <linux/fs.h>
   8 #include <linux/mm.h>
   9 #include <linux/sched.h>
  10 #include <linux/utsname.h>
  11 #include <linux/syscalls.h>
  12 #include <asm/current.h>
  13 #include <asm/mman.h>
  14 #include <linux/uaccess.h>
  15 #include <asm/unistd.h>
  16
  17 long old_mmap(unsigned long addr, unsigned long len,
  18               unsigned long prot, unsigned long flags,
  19               unsigned long fd, unsigned long offset)
  20 {
  21         long err = -EINVAL;
  22         if (offset & ~PAGE_MASK)
  23                 goto out;
  24
  25         err = ksys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
  26  out:
  27         return err;
  28 }