cvs commit: src/sys/kern kern_descrip.c
Christian S.J. Peron
csjp at FreeBSD.org
Sat Mar 18 23:27:22 UTC 2006
csjp 2006-03-18 23:27:22 UTC
FreeBSD src repository
Back out fd optimization introduced in revision 1.280 as it appears to be
really breaking things. Simple "close(0); dup(fd)" does not return descriptor
"0" in some cases. Further, this change also breaks some MAC interactions with
mac_execve_will_transition(). Under certain circumstances, fdcheckstd() can
be called in execve(2) causing an assertion that checks to make sure that
stdin, stdout and stderr reside at indexes 0, 1 and 2 in the process fd table
to fail, resulting in a kernel panic when INVARIANTS is on.
This should also kill the "dup(2) regression on 6.x" show stopper item on the
6.1-RELEASE TODO list.
This is a RELENG_6 candidate.
Silence from: des
MFC after: 1 week
Revision Changes Path
1.292 +2 -4 src/sys/kern/kern_descrip.c
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