Copyright (c) 1983 The Regents of the University of California.
All rights reserved.
Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation,
advertising materials, and other materials related to such
distribution and use acknowledge that the software was developed
by the University of California, Berkeley. The name of the
University may not be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
@(#)fsync.2 6.5 (Berkeley) 05/18/89
All rights reserved.
Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation,
advertising materials, and other materials related to such
distribution and use acknowledge that the software was developed
by the University of California, Berkeley. The name of the
University may not be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
@(#)fsync.2 6.5 (Berkeley) 05/18/89
FSYNC 2 ""
C 5 NAME
fsync - synchronize a file's in-core state with that on disk
SYNOPSIS
fsync(fd)
int fd;
DESCRIPTION
Fsync 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 should be used by programs that require a file to be in a known state, for example, in building a simple transaction facility.
"RETURN VALUE
A 0 value is returned on success. A -1 value indicates
an error.
"ERRORS
The fsync fails if:
15 [EBADF] Fd is not a valid descriptor.
15 [EINVAL] Fd refers to a socket, not to a file.
15 [EIO] An I/O error occurred while reading from or writing to the file system.
"SEE ALSO"
sync(2), sync(8), update(8)