diff options
| author | Karl-Johan Alm <karljohan-alm@garage.co.jp> | 2020-01-07 22:24:16 +0900 |
|---|---|---|
| committer | fanquake <fanquake@gmail.com> | 2020-01-23 08:11:10 +0800 |
| commit | c8ad23c52932cf33fac6e527ff18b5241ccceb04 (patch) | |
| tree | a24741679874dcbf1f2c3dead89ab7cfdcf3beeb /src/util | |
| parent | 4cf73504220e95ea1c4961509ea757ce6d393a9b (diff) | |
bug-fix macos: give free bytes to F_PREALLOCATE
The macos manpage for fcntl (for F_PEOFPOSMODE) states:
> Allocate from the physical end of file. In this case, fst_length indicates the number of newly allocated bytes desired.
Github-Pull: #17887
Rebased-From: 75163f4729c10c40d2843da28a8c79ab89193f6a
Diffstat (limited to 'src/util')
| -rw-r--r-- | src/util/system.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/util/system.cpp b/src/util/system.cpp index bbd7c9940a..5a3c68aa0c 100644 --- a/src/util/system.cpp +++ b/src/util/system.cpp @@ -1088,17 +1088,19 @@ 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 |