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check if fdatasync is available and return ENOSYS if not

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This commit is contained in:
Antonio SJ Musumeci 2016-10-22 23:14:50 -04:00
parent f954be60a4
commit 6d6fb45a3b
1 changed files with 5 additions and 0 deletions
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5
src/fs_base_fsync.hpp
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@ -16,6 +16,7 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/ */
#include <errno.h>
#include <unistd.h> #include <unistd.h>
namespace fs namespace fs
@ -33,6 +34,10 @@ namespace fs
int int
fdatasync(const int fd) fdatasync(const int fd)
{ {
#if _POSIX_SYNCHRONIZED_IO > 0
return ::fdatasync(fd); return ::fdatasync(fd);
#else
return (errno=ENOSYS,-1);
#endif
} }
} }