Xref: utzoo comp.unix.questions:12823 comp.lang.c:17614
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!husc6!rutgers!att!homxb!homxc!iluvu
From: iluvu@homxc.ATT.COM (S.RAVIKUMAR)
Newsgroups: comp.unix.questions,comp.lang.c
Subject: lockfile/unix/c
Keywords: c, unix, lockf
Message-ID: <6307@homxc.ATT.COM>
Date: 12 Apr 89 21:26:32 GMT
Organization: AT&T BL Holmdel NJ USA
Lines: 14

I tried to restrict access to a shared resource between
processes using the unix system call "lockf". The piece of code
is as follows:

	fd = open(FILENAME, O_CREAT, 0666);
	lockf(fd, F_LOCK, (long)0);

"lockf" always returns with an error and errno is set to "Bad
file descriptor". Any help or suggestions are welcome.

Thanks.

--ravi
skumar@hocus.att.com