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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [arch/] [powerpc/] [lib/] [usercopy_64.c] - Rev 3
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/* * Functions which are too large to be inlined. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <linux/module.h> #include <asm/uaccess.h> unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) { if (likely(access_ok(VERIFY_READ, from, n))) n = __copy_from_user(to, from, n); else memset(to, 0, n); return n; } unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) { if (likely(access_ok(VERIFY_WRITE, to, n))) n = __copy_to_user(to, from, n); return n; } unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long n) { might_sleep(); if (likely(access_ok(VERIFY_READ, from, n) && access_ok(VERIFY_WRITE, to, n))) n =__copy_tofrom_user(to, from, n); return n; } EXPORT_SYMBOL(copy_from_user); EXPORT_SYMBOL(copy_to_user); EXPORT_SYMBOL(copy_in_user);