Bug 63596

Summary: missing stdout/stderr breaks hotplug /sbin/ifup
Product: [Retired] Red Hat Linux Reporter: Sam Varshavchik <mrsam>
Component: initscriptsAssignee: Bill Nottingham <notting>
Status: CLOSED DUPLICATE QA Contact: Brock Organ <borgan>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.3CC: rvokal
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Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2002-04-16 03:28:26 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Sam Varshavchik 2002-04-16 03:28:22 UTC
My hotplug isn't hotplugging.  Despite reassuring beeps, the pcmcia card does
not come up when it should.  Manually running 'ifup eth0' works.

Further investigation revealed this is what happens each time /sbin/ifup runs
grep, when it is kicked off by /etc/hotplug/net.agent:

execve("/bin/grep", ["grep", "eth0"], [/* 7 vars */]) = 0

...

close(1)                                = -1 EBADF (Bad file descriptor)
write(2, "grep: ", 6)                   = -1 EBADF (Bad file descriptor)
write(2, "write error", 11)             = -1 EBADF (Bad file descriptor)
write(2, ": Bad file descriptor", 21)   = -1 EBADF (Bad file descriptor)
write(2, "\n", 1)                       = -1 EBADF (Bad file descriptor)
_exit(1)                                = ?


Looks like there's no stdout or stderr.

As a temporary fix, adding

exec 1>/dev/null

to /sbin/ifup gets hotplug working again.  Not sure if this is the right fix.

Comment 1 Bill Nottingham 2002-04-16 05:36:28 UTC
This was fixed *before* beta4. Your grep is old.

*** This bug has been marked as a duplicate of 61705 ***