How about providing a new flag to open(2) which tells it not to follow links?
Then the above can become race free:
dentry = open_namei(corefile, O_CREAT | 2 | O_TRUNC | O_NLINK, 0600);
---- ---- ----
David Woodhouse David.Woodhouse@mvhi.com Office: (+44) 1223 810302
Project Leader, Process Information Systems Mobile: (+44) 976 658355
Axiom (Cambridge) Ltd., Swaffham Bulbeck, Cambridge, CB5 0NA, UK.
finger dwmw2@ferret.lmh.ox.ac.uk for PGP key.
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