File Lock

[Amrith]

How can we know when a file is locked using flock system call in linux.

Thanks

[Barry Margolin]

In article <f253dece.0307072302.3bf31538@posting.google.com >,
Amrith <amrith@programmer.net> wrote:

>How can we know when a file is locked using flock system call in linux.

Try to lock it using flock().

--
Barry Margolin, [email]barry.margolin@level3.com[/email]
Level(3), Woburn, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.

[Chuck Dillon]

Amrith wrote:

> How can we know when a file is locked using flock system call in linux.
>
> Thanks

I'm going to guess that you mean 'whether a file is locked as a result
of a call to flock'. Use flock to try and lock it with a different
process. man flock.

-- ced

--
Chuck Dillon
Senior Software Engineer
NimbleGen Systems Inc.

[Marc Rochkind]

On 8 Jul 2003 00:02:46 -0700, Amrith <amrith@programmer.net> wrote:

> How can we know when a file is locked using flock system call in linux.
>
> Thanks
>

Others have answered... but it's better in general to use lockf, which is
standard.

--Marc

[Geoff Clare]

Marc Rochkind <rochkind@basepath.com> writes:

>> How can we know when a file is locked using flock system call in linux.

>Others have answered... but it's better in general to use lockf, which is
>standard.

It's better still to use fcntl(), which is mandatory in POSIX.1 (whereas
lockf() is one of the XSI optional functions).
--
Geoff Clare <nospam@gclare.org.uk>