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only use MAP_SHARED_VALIDATE where defined #1941

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nick black 2021-07-16 00:00:58 -04:00
parent fadc500568
commit cd49a63b7b
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1 changed files with 4 additions and 0 deletions
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src/lib/png.c
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@ -263,7 +263,11 @@ void* create_png_mmap(const ncvisual* ncv, size_t* bsize, int fd){
} }
// FIXME hugetlb? // FIXME hugetlb?
void* map = mmap(NULL, mlen, PROT_WRITE | PROT_READ, void* map = mmap(NULL, mlen, PROT_WRITE | PROT_READ,
#ifdef MAP_SHARED_VALIDATE
MAP_SHARED_VALIDATE | MAP_SHARED_VALIDATE |
#else
MAP_SHARED |
#endif
(fd >= 0 ? 0 : MAP_ANONYMOUS), fd, 0); (fd >= 0 ? 0 : MAP_ANONYMOUS), fd, 0);
if(map == MAP_FAILED){ if(map == MAP_FAILED){
logerror("Couldn't get %zuB map for %d\n", mlen, fd); logerror("Couldn't get %zuB map for %d\n", mlen, fd);