Date: Fri, 26 Feb 1999 12:39:52 -0500 (EST) From: "David E. Cross" <crossd@phoenix.cs.rpi.edu> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/10283: Race condition in rc.network Message-ID: <199902261739.MAA17549@phoenix.cs.rpi.edu>
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>Number: 10283
>Category: bin
>Synopsis: Race condition in rc.network
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Feb 26 10:10:10 PST 1999
>Closed-Date:
>Last-Modified:
>Originator: David E. Cross
>Release: FreeBSD 3.1-STABLE i386
>Organization:
Rensselaer Polytechnic Institute, Department of Computer Science
>Environment:
Automounted /usr/local with automount maps provided by NIS
>Description:
AMD returns almost immediately when run, not waiting for for
initialization of the parent to complete. In the network startup amd is
started as part of network_pass3, this occurs immediately before things like
ldconfig_paths, and scanning option directories for additional startup scripts,
the result is that sometimes the directories listed do not exist and therefore
are not added to ld.so's hint file or are not searched for additional files.
>How-To-Repeat:
amd [OPTIONS]; ls -la /automounted/directory
>Fix:
A loose loop after amd is called that waits for amd to come up before
allowing the startup sctipts to continue. This is stolen from 'wait4amd',
which is included with the base AMD distribution from Columbia, is included
in our source tree, but is not included in our install??
(patch to rc.network is included below)
*** rc.network.old Sat Feb 20 12:56:18 1999
--- rc.network Sat Feb 20 13:05:29 1999
***************
*** 284,294 ****
fi
if [ "X${amd_enable}" = X"YES" ]; then
! echo -n ' amd'
if [ "X${amd_map_program}" != X"NO" ]; then
amd_flags="${amd_flags} `eval ${amd_map_program}`"
fi
amd -p ${amd_flags} > /var/run/amd.pid 2> /dev/null
fi
if [ "X${rwhod_enable}" = X"YES" ]; then
--- 284,299 ----
fi
if [ "X${amd_enable}" = X"YES" ]; then
! echo -n ' amd('
if [ "X${amd_map_program}" != X"NO" ]; then
amd_flags="${amd_flags} `eval ${amd_map_program}`"
fi
amd -p ${amd_flags} > /var/run/amd.pid 2> /dev/null
+ while ! amq >/dev/null 2>&1; do
+ echo -n .
+ sleep 1;
+ done
+ echo -n ')'
fi
if [ "X${rwhod_enable}" = X"YES" ]; then
>Release-Note:
>Audit-Trail:
>Unformatted:
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