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Merge 04f78b818f into merged_master (Bitcoin PR #17887)

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Andrew Poelstra 2020-11-14 16:52:10 +00:00
commit b00e322143
1 changed files with 4 additions and 2 deletions
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6
src/util/system.cpp
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@ -1013,17 +1013,19 @@ void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length) {
SetEndOfFile(hFile);
#elif defined(MAC_OSX)
// OSX specific version
// NOTE: Contrary to other OS versions, the OSX version assumes that
// NOTE: offset is the size of the file.
fstore_t fst;
fst.fst_flags = F_ALLOCATECONTIG;
fst.fst_posmode = F_PEOFPOSMODE;
fst.fst_offset = 0;
fst.fst_length = (off_t)offset + length;
fst.fst_length = length; // mac os fst_length takes the # of free bytes to allocate, not desired file size
fst.fst_bytesalloc = 0;
if (fcntl(fileno(file), F_PREALLOCATE, &fst) == -1) {
fst.fst_flags = F_ALLOCATEALL;
fcntl(fileno(file), F_PREALLOCATE, &fst);
}
ftruncate(fileno(file), fst.fst_length);
ftruncate(fileno(file), static_cast<off_t>(offset) + length);
#else
#if defined(__linux__)
// Version using posix_fallocate