|FSYNC(2)||System Calls Manual||FSYNC(2)|
LIBRARY¶Standard C Library (libc, -lc)
fsync() system call causes all modified data and attributes of fd to be moved to a permanent storage device. This normally results in all in-core modified copies of buffers for the associated file to be written to a disk.
fsync() system call should be used by
programs that require a file to be in a known state, for example, in
building a simple transaction facility.
fsync() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
fsync() fails if:
SEE ALSO¶sync(2), syncer(4), sync(8)
fsync() system call appeared in 4.2BSD.
|June 4, 1993||Linux 4.9.0-9-amd64|