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19 lines
456 B
19 lines
456 B
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2013 Richard Weinberger <[email protected]> |
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*/ |
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#include <linux/uaccess.h> |
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#include <linux/kernel.h> |
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#include <os.h> |
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bool copy_from_kernel_nofault_allowed(const void *src, size_t size) |
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{ |
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void *psrc = (void *)rounddown((unsigned long)src, PAGE_SIZE); |
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if ((unsigned long)src < PAGE_SIZE || size <= 0) |
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return false; |
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if (os_mincore(psrc, size + src - psrc) <= 0) |
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return false; |
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return true; |
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}
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