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man pages section 2: System Calls Oracle Solaris 11.1 Information Library |
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man pages section 2: System Calls Oracle Solaris 11.1 Information Library |
- update super block
#include <unistd.h> void sync(void);
The sync() function writes all information in memory that should be on disk, including modified super blocks, modified inodes, and delayed block I/O.
Unlike fsync(3C), which completes the writing before it returns, sync() schedules but does not necessarily complete the writing before returning.
The sync() function should be used by applications that examine a file system, such as fsck(1M), and df(1M), and is mandatory before rebooting.
See attributes(5) for descriptions of the following attributes:
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