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- /*
- * Copyright (C) 2013 Richard Weinberger <richrd@nod.at>
- *
- * 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/uaccess.h>
- #include <linux/kernel.h>
- #include <os.h>
- long probe_kernel_read(void *dst, const void *src, size_t size)
- {
- void *psrc = (void *)rounddown((unsigned long)src, PAGE_SIZE);
- if ((unsigned long)src < PAGE_SIZE || size <= 0)
- return -EFAULT;
- if (os_mincore(psrc, size + src - psrc) <= 0)
- return -EFAULT;
- return __probe_kernel_read(dst, src, size);
- }
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