CVS commit: [netbsd-4] src/sys

[Soren Jacobsen <snj%netbsd.org@localhost>]

Module Name:    src
Committed By:   snj
Date:           Fri Apr 10 20:32:04 UTC 2009

Modified Files:
        src/sys/kern [netbsd-4]: uipc_usrreq.c
        src/sys/sys [netbsd-4]: file.h

Log Message:
Apply patch (requested by mlelstv in ticket #1303):
Avoid deep recursion and file descriptor exhaustion.

1. unp_detach: go not call unp_gc directly for descriptors
   that are unixdomain sockets themselves. Instead mark them
   for cleanup during garbage collection.

2. unp_gc: handle detach of descriptors that were marked earlier.

3. prohibit transfer of descriptors within SCM_RIGHTS messages if
   (num_files_in_transit > maxfiles / unp_rights_ratio)


To generate a diff of this commit:
cvs rdiff -u -r1.94.2.2 -r1.94.2.3 src/sys/kern/uipc_usrreq.c
cvs rdiff -u -r1.56 -r1.56.12.1 src/sys/sys/file.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.