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sync()

Synchronize filesystem updates

Synopsis:

#include <unistd.h>

void sync( void );

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The sync() function queues all the modified block buffers for writing, and returns; it doesn't wait for the actual I/O to take place. Use this function — or fsync() for a single file — to ensure consistency of the entire on-disk filesystem with the contents of the in-memory buffer cache.

Classification:

POSIX 1003.1 XSI

Safety:
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes

See also:

fdatasync(), fsync()

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