diff options
| author | Phil Blundell <philb@gnu.org> | 2011-11-14 13:06:51 +0000 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2011-11-15 12:20:56 +0000 |
| commit | 689884653938b98899fb3ba791221fdbe2f40e7f (patch) | |
| tree | 79ed59eae44e8a31ebbf8fa2fb1e8f0bcbed8831 | |
| parent | e7090743df6b38e9ce73743b5bbdd8ab6e9cada4 (diff) | |
| download | openembedded-core-689884653938b98899fb3ba791221fdbe2f40e7f.tar.gz openembedded-core-689884653938b98899fb3ba791221fdbe2f40e7f.tar.bz2 openembedded-core-689884653938b98899fb3ba791221fdbe2f40e7f.zip | |
libnss-mdns: avoid race condition in postinst
Writing to "/tmp/nsswitch.conf" leads to a race condition if two
copies of the postinst are running simultaneously. Fix this by
modifying /etc/nsswitch.conf in place using sed -i. Also make the
same change to the prerm for consistency although the race will not
occur here in practice.
Signed-off-by: Phil Blundell <philb@gnu.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
| -rw-r--r-- | meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb b/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb index 5f614f86a2..87707142d5 100644 --- a/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb +++ b/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb @@ -7,7 +7,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=2d5025d4aa3495befef8f17206a5b0a1" DEPENDS = "avahi" RDEPENDS_${PN} = "avahi-daemon" -PR = "r3" +PR = "r4" SRC_URI = "http://0pointer.de/lennart/projects/nss-mdns/nss-mdns-${PV}.tar.gz" @@ -26,14 +26,12 @@ EXTRA_OECONF = "--libdir=${base_libdir} --disable-lynx --enable-avahi" # TODO: pattern based configuration update pkg_postinst_${PN} () { cat $D/etc/nsswitch.conf | grep "hosts:\s*files dns$" > /dev/null && { - cat $D/etc/nsswitch.conf | sed 's/hosts:\s*files dns/& mdns4/' > /tmp/nsswitch.conf - mv /tmp/nsswitch.conf $D/etc/nsswitch.conf + sed -i 's/hosts:\s*files dns/& mdns4/' $D/etc/nsswitch.conf } } pkg_prerm_${PN} () { cat /etc/nsswitch.conf | grep "hosts:\s*files dns mdns4$" > /dev/null && { - cat /etc/nsswitch.conf | sed 's/\(hosts:\s*files dns\) mdns4*/\1/' > /tmp/nsswitch.conf - mv /tmp/nsswitch.conf /etc/nsswitch.conf + sed -i 's/\(hosts:\s*files dns\) mdns4*/\1/' /etc/nsswitch.conf } } |