kopia lustrzana https://github.com/stlink-org/stlink
40 wiersze
756 B
C
40 wiersze
756 B
C
#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include "mmap.h"
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void *mmap (void *addr, uint32_t len, int32_t prot, int32_t flags, int32_t fd, int64_t offset) {
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void *buf;
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ssize_t count;
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if ( addr || fd == -1 || (prot & PROT_WRITE)) { return(MAP_FAILED); }
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buf = malloc(len);
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if ( NULL == buf ) { return(MAP_FAILED); }
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if (lseek(fd, offset, SEEK_SET) != offset) {
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free(buf);
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return(MAP_FAILED);
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}
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count = read(fd, buf, len);
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if (count != (ssize_t)len) {
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free (buf);
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return(MAP_FAILED);
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}
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return(buf);
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(void)flags;
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}
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int32_t munmap (void *addr, uint32_t len) {
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free (addr);
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return(0);
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(void)len;
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}
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