45 строки
1.3 KiB
C
45 строки
1.3 KiB
C
/* sys_frv.c: FRV arch-specific syscall wrappers
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*
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* Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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* - Derived from arch/m68k/kernel/sys_m68k.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/fs.h>
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#include <linux/smp.h>
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#include <linux/sem.h>
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#include <linux/msg.h>
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#include <linux/shm.h>
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#include <linux/stat.h>
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#include <linux/mman.h>
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#include <linux/file.h>
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#include <linux/syscalls.h>
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#include <linux/ipc.h>
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#include <asm/setup.h>
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#include <linux/uaccess.h>
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asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
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unsigned long prot, unsigned long flags,
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unsigned long fd, unsigned long pgoff)
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{
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/* As with sparc32, make sure the shift for mmap2 is constant
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(12), no matter what PAGE_SIZE we have.... */
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/* But unlike sparc32, don't just silently break if we're
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trying to map something we can't */
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if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1))
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return -EINVAL;
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return sys_mmap_pgoff(addr, len, prot, flags, fd,
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pgoff >> (PAGE_SHIFT - 12));
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}
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