mills@cc.umanitoba.ca (Gary Mills) writes:

> In <41e78a47$0$6216$e4fe514c@news.xs4all.nl> Casper H.S. Dik <Casper.Dik@S
un.COM> writes:
> 
> 
> 
> 
>
> I'm wondering if the original question was really about how soon
> another process could read back the data from the file.  In that
> case, it should be available immediately after the close() returns,
> even though it only resides in memory at the time.  I'm assuming
> that UFS guarantees this behavior.
>

To quote write(2) man page on Solaris

After a write() to a regular file has successfully returned:

o  Any successful read(2) from each byte position  in  the
file  that  was  modified by that write will return the
data specified by the write() for that  position  until
such byte positions are again modified.

o  Any subsequent successful  write()  to  the  same  byte
position in the file will overwrite that file data.

The OP's questions could also be interpreted in the sense of "if I switch
off my hard disk (or my machine) at that point, what would happen to the
data?".

Dragan

--
Dragan Cvetkovic,

To be or not to be is true. G. Boole      No it isn't.  L. E. J. Brouwer

!!! Sender/From address is bogus. Use reply-to one !!!

[ Post a follow-up to this message ]