fsync
OS/161 Reference Manual
Name
fsync - flush filesystem data for a specific file to disk
Library
Standard C Library (libc, -lc)
Synopsis
#include <unistd.h>
int
fsync(int fd);
Description
The fsync function forces a write of dirty filesystem buffers and
other dirty filesystem state associated with the object referred to by
fd to be written to disk.
fsync should not return until the writes are complete.
Return Values
On success, fsync returns 0. On error, -1 is returned, and
errno is set according to the error
encountered.
Errors
The following error codes should be returned under the conditions
given. Other error codes may be returned for other errors not
mentioned here.
| | |
| EBADF | fd is not a valid file handle. |
| EIO | A hard I/O error occurred. |