lockfile/unix/c

[William Kucharski]

Calls to lockf(3C) must be made with a file descriptor opened to either
O_WRONLY or O_RDWR modes.

So, change your code to read:

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

Everything will work just fine.
-- 
					William Kucharski

ARPA: kucharsk at uts.amdahl.com
UUCP: ...!{ames,decwrl,sun,uunet}!amdahl!kucharsk

Disclaimer:  The opinions expressed above are my own, and may not agree with
	     those of any other sentient being, not to mention those of my 
	     employer.  So there.