68 lines
1.1 KiB
C
68 lines
1.1 KiB
C
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif /* HAVE_CONFIG_H */
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "sys/mman.h"
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/***** API *****/
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void *
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mmap(void *addr __UNUSED__,
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size_t len,
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int prot,
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int flags,
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int fd,
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off_t offset)
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{
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void *data;
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size_t size;
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data = malloc(len);
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if (!data)
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{
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fprintf (stderr, "[Escape] [mmap] malloc failed\n");
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return MAP_FAILED;
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}
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size = read(fd, data, len);
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if (size != len)
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{
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fprintf (stderr, "[Escape] [mmap] read failed\n");
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free(data);
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return MAP_FAILED;
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}
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if (lseek(fd, -len, SEEK_CUR) == -1)
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{
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fprintf (stderr, "[Escape] [mmap] lseek failed\n");
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free(data);
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return MAP_FAILED;
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}
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return data;
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}
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int
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munmap(void *addr,
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size_t len __UNUSED__)
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{
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if (addr && (addr != MAP_FAILED))
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free(addr);
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return 0;
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}
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int
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madvise(void *addr __UNUSED__,
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size_t length __UNUSED__,
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int advice __UNUSED__)
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{
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return 0;
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}
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