/* $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;