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/* $OpenBSD: util.h,v 1.2 2004/10/09 22:11:11 millert Exp $ */
/*
* Placed in the public domain by Todd C. Miller <Todd.Miller@courtesan.com>
* on October 9, 2004.
*/
#define MMAP(ptr, len, prot, flags, fd, off) do { \
if ((ptr = mmap(NULL, len, prot, flags, fd, off)) == MAP_FAILED) { \
usemmap = 0; \
if (errno != EINVAL) \
warn("mmap"); \
else if ((ptr = malloc(len)) == NULL) { \
ptr = MAP_FAILED; \
warn("malloc"); \
} else if (pread(fd, ptr, len, off) != len) { \
free(ptr); \
ptr = MAP_FAILED; \
warn("pread"); \
} \
} \
} while (0)
#define MUNMAP(addr, len) do { \
if (usemmap) \
munmap(addr, len); \
else \
free(addr); \
} while (0)
extern int usemmap;
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