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SubjectRe: [patch-2.3.29] bugfix for pipe(2) system call.
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In message <Pine.SCO.3.94.991125130218.1686B-100000@tyne.london.sco.com>, 
Tigra
n Aivazian writes:
+-----
| If David suggested to write -1's to userspace's fd[2] that means overhead
| in non-failing case which is totally unacceptable. (it's the same as doing
+--->8
Compared to odd race conditions or file descriptor leaks?

| verify_area(), in fact it is cheaper to keep the kernel lock over
| copy_to_user() and close the descriptors if failed than doing that).
+--->8

Then perhaps that should be done. I'm not real happy with the other
alternatives.

--
brandon s. allbery os/2,linux,solaris,perl allbery@kf8nh.apk.net
system administrator kthkrb,heimdal,gnome,rt allbery@ece.cmu.edu
carnegie mellon / electrical and computer engineering kf8nh
We are Linux. Resistance is an indication that you missed the point.



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