From:	"Rafał Maj" <r_maj AT poczta DOT onet DOT pl>
Newsgroups:	comp.os.msdos.djgpp
Subject:	RE : flock under djgpp?
Date:	Tue, 22 Aug 2000 13:23:29 +0200
Organization:	Academic Computer Center CYFRONET AGH
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Użytkownik Bauce <bauce AT pt DOT nce DOT sita DOT int> wrote :
>   I'm trying to find a "file locking" function, and it seems that the
> "traditional" flock() is not available under djgpp.

 #include <io.h>
 int lock(int fd, long offset, long length);

Locks a region in file FD using MS-DOS file sharing interface.  The
region of LENGTH bytes, starting from OFFSET, will become entirely
inaccessible to other processes. If multiple locks are used on a single
file they must be non-overlapping. The lock must be removed before the
file is closed.

This function will fail unless SHARE, or a network software providing
similar interface, is installed. This function is compatible with
Borland C++ function of the same name.

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