9fans archive / 1998 / 02 / 18 /    prev next

From: Rob Pike rob@pla...
Subject: [9fans] create(2)/open(2) race for file creation
Date: Sat, 7 Feb 1998 21:01:51 -0500

Am I missing something?   If everyone does create(file, OWRITE, 000)
only one process can succeed.   Perm==0 means no one can read or
write the file; if you want one writer, many readers, 004 will do.

In other words, it's a create/open race, so don't run that race.

-rob