fsync() synchronize file changes	Function
	SYNOPSIS DESCRIPTION PARAMETERS RETURN VALUES CONFORMANCE MULTITHREAD SAFETY LEVEL PORTING ISSUES AVAILABILITY SEE ALSO

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SYNOPSIS

#include <unistd.h>

int fsync(int fildes);

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DESCRIPTION

The fsync() function synchronizes a file's in-memory state with that on the physical medium.

The fsync() function should be used by programs which require modifications to a file to be completed before continuing, such as with database transactions.

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PARAMETERS

fildes 

Is the file descriptor for the file to be synchronized.

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RETURN VALUES

Upon successful completion, fsync() returns 0. On failure, it returns -1 and errno is set to one of the following values:

EBADF 

fildes is not a file descriptor that is open for writing.

EINVAL 

The fildes argument refers to a file for which this operation is not possible.

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CONFORMANCE

UNIX 98.

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MULTITHREAD SAFETY LEVEL

Async-signal-safe.

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PORTING ISSUES

None.

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AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

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SEE ALSO

Functions:

close(), dup(), fcntl(), open(), pipe(), write()

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PTC MKS Toolkit 10.4 Documentation Build 39.