Bug 63596 - missing stdout/stderr breaks hotplug /sbin/ifup
missing stdout/stderr breaks hotplug /sbin/ifup
Status: CLOSED DUPLICATE of bug 61705
Product: Red Hat Linux
Classification: Retired
Component: initscripts (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Bill Nottingham
Brock Organ
Depends On:
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Reported: 2002-04-15 23:28 EDT by Sam Varshavchik
Modified: 2014-03-16 22:27 EDT (History)
1 user (show)

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Doc Type: Bug Fix
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Last Closed: 2002-04-15 23:28:26 EDT
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Description Sam Varshavchik 2002-04-15 23:28:22 EDT
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 01:36:28 EDT
This was fixed *before* beta4. Your grep is old.

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

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