diff options
Diffstat (limited to 'llvm/lib/Support/Unix/Path.inc')
| -rw-r--r-- | llvm/lib/Support/Unix/Path.inc | 24 |
1 files changed, 4 insertions, 20 deletions
diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc index fbe3ed11c59..0e150d1ac26 100644 --- a/llvm/lib/Support/Unix/Path.inc +++ b/llvm/lib/Support/Unix/Path.inc @@ -1119,6 +1119,9 @@ namespace fs { #ifdef __APPLE__ /// This implementation tries to perform an APFS CoW clone of the file, /// which can be much faster and uses less space. +/// Unfortunately fcopyfile(3) does not support COPYFILE_CLONE, so the +/// file descriptor variant of this function still uses the default +/// implementation. std::error_code copy_file(const Twine &From, const Twine &To) { uint32_t Flag = COPYFILE_DATA; if (__builtin_available(macos 10.12, *)) { @@ -1138,26 +1141,7 @@ std::error_code copy_file(const Twine &From, const Twine &To) { return std::error_code(); return std::error_code(errno, std::generic_category()); } - -/// This implementation tries to perform an APFS CoW clone of the file, -/// which can be much faster and uses less space. -std::error_code copy_file(const Twine &From, int ToFD) { - int ReadFD; - if (std::error_code EC = openFileForRead(From, ReadFD, OF_None)) - return EC; - - uint32_t Flag = COPYFILE_DATA; - if (__builtin_available(macos 10.12, *)) - Flag = COPYFILE_CLONE; - - int Status = fcopyfile(ReadFD, ToFD, /*State*/ NULL, Flag); - - close(ReadFD); - if (Status == 0) - return std::error_code(); - return std::error_code(errno, std::generic_category()); -} -#endif +#endif // __APPLE__ } // end namespace fs |
