51 lines
1.7 KiB
C
Executable File
51 lines
1.7 KiB
C
Executable File
/* Determine the protection of a virtual memory area.
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2024. */
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#ifndef _VMA_PROT_H
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#define _VMA_PROT_H
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/* Get size_t. */
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#include <stddef.h>
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/* Get VMA_PROT_READ, VMA_PROT_WRITE, VMA_PROT_EXECUTE. */
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#include "vma-iter.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Returns the declared permissions available on the memory area that
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starts at START and is SIZE bytes long, as a combination of the bit masks
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VMA_PROT_READ, VMA_PROT_WRITE, VMA_PROT_EXECUTE.
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Note: The effective permissions may be larger. For example, some hardware
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allows execute permission anywhere where read permission is present.
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Returns -1 if it cannot be determined.
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Note: This function is expensive. If possible, an application should find
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faster alternatives for memory areas that it has allocated itself, such as
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through malloc(), mmap(), or shmat(). */
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extern int get_vma_prot (void *start, size_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _VMA_PROT_H */
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