Blame src/logic/mdso_map_input.c
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/****************************************************************/
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/* mdso: midipix dso scavenger */
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/* Copyright (C) 2015 Z. Gilboa */
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/* Released under GPLv2 and GPLv3; see COPYING.MDSO. */
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/****************************************************************/
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#include <stdint.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <mdso/mdso.h>
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int mdso_map_input(
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int fd,
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const char * path,
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int prot,
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struct mdso_input * map)
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{
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struct stat stat;
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bool fnew;
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int ret;
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if ((fnew = (fd < 0)))
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fd = open(path,O_RDONLY | O_CLOEXEC);
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if (fd < 0)
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return -1;
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if ((ret = fstat(fd,&stat) < 0) && fnew)
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close(fd);
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if (ret < 0)
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return -1;
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map->size = stat.st_size;
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map->addr = mmap(0,map->size,prot,MAP_PRIVATE,fd,0);
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if (fnew)
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close(fd);
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return (map->addr == MAP_FAILED) ? -1 : 0;
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}
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int mdso_unmap_input(struct mdso_input * map)
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{
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return munmap(map->addr,map->size);
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}
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