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45 lines
804 B
45 lines
804 B
3 years ago
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//! Memory mapping abstraction
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#ifndef _MAP_H
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#define _MAP_H
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#include <stdbool.h>
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#include "ints.h"
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typedef enum mm_err {
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MAP_ERR_UNKNOWN = 0,
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MAP_SUCCESS = 1,
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MAP_ERR_MMAP,
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MAP_ERR_UNMAP,
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MAP_ERR_OPEN,
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MAP_ERR_CLOSE,
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} map_result_t;
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typedef union memory_map {
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// Common
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struct {
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void* origin;
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usize len;
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};
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// Specific to anon / file
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struct mm_file {
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void* origin;
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usize len;
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off_t fd_offset;
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int fd;
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} file;
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struct mm_anon {
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void* origin;
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usize len;
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} anon;
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} map_t;
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map_result_t map_fd(int fd, bool write, usize size, off_t offset, map_t *pOUT map);
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map_result_t map_file(const char* file, bool write, usize size, off_t offset, map_t *pOUT map);
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map_result_t map_anon(void* ptr, usize len, map_t *pOUT map);
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map_result_t map_free(map_t map);
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#endif /* _MAP_H */
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