https://bugzilla.novell.com/show_bug.cgi?id=374990
User adaugherity@tamu.edu added comment
https://bugzilla.novell.com/show_bug.cgi?id=374990#c3
--- Comment #3 from Andrew Daugherity 2008-07-09 15:37:59 MDT ---
This bug is NOT fixed in 11.0 final, with all updates applied (at least, not
out of the box, but I have discovered a workaround). It fails in the same way
as 11.0a3 (which is different from the 10.3 failure), where it looks up port 0
instead of the specified port.
Here is a transcript (a.out is a fresh recompile of the C code attached to this
bug report):
====
andrew@test-app-01:~> uname -a
Linux test-app-01.vpr.int 2.6.25.9-0.2-pae #1 SMP 2008-06-28 00:00:07 +0200
i686 i686 i386 GNU/Linux
andrew@test-app-01:~> cat /etc/SuSE-release
openSUSE 11.0 (i586)
VERSION = 11.0
andrew@test-app-01:~> rpm -q kernel-pae glibc
kernel-pae-2.6.25.9-0.2
glibc-2.8-14.1
andrew@test-app-01:~> ./a.out
found service spr-itunes for port 0/(null)
found service spr-itunes for port 0/tcp
not found in services: port 13/udp
andrew@test-app-01:~> grep 'services:' /etc/nsswitch.conf
services: files
andrew@test-app-01:~> grep ' 13/' /etc/services
daytime 13/tcp # Daytime (RFC 867)
daytime 13/udp # Daytime (RFC 867)
andrew@test-app-01:~> grep ' 0/' /etc/services
# 0/tcp Reserved
# 0/udp Reserved
spr-itunes 0/tcp # Shirt Pocket netTunes
spl-itunes 0/tcp # Shirt Pocket launchTunes
====
I did however, have an epiphany and discover that the breakage is apparently
due to nscd:
====
andrew@test-app-01:~> sudo /etc/init.d/nscd stop
Shutting down Name Service Cache Daemon done
andrew@test-app-01:~> ./a.out
found service daytime for port 13/(null)
found service daytime for port 13/tcp
found service daytime for port 13/udp
andrew@test-app-01:~> sudo /etc/init.d/nscd start
Starting Name Service Cache Daemon done
andrew@test-app-01:~> ./a.out
found service spr-itunes for port 0/(null)
found service spr-itunes for port 0/tcp
not found in services: port 13/udp
====
nscd is enabled in the default installation. I have not modified its
configuration; this is on a fresh installation and reformat of 11.0. As you
can see, it is only when nscd is running (and caching services) that the
failure occurs. If I disable services caching in nscd.conf, the problem no
longer occurs. Perhaps this bug should be reassigned to nscd.
Stopping nscd also solves the problem in 10.3.
--
Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
