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| author | Felix Fietkau <nbd@openwrt.org> | 2007-07-12 21:59:38 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2007-07-12 21:59:38 +0000 |
| commit | 1b4380b8edfc66ee57f7d016308fd9d92eea8874 (patch) | |
| tree | f5a1d58bbf0383cedac440a62d3b059147c9c0a9 | |
| parent | f82f62b9920538d9d650bab2ef9690d55df0b720 (diff) | |
| download | upstream-1b4380b8edfc66ee57f7d016308fd9d92eea8874.tar.gz upstream-1b4380b8edfc66ee57f7d016308fd9d92eea8874.tar.bz2 upstream-1b4380b8edfc66ee57f7d016308fd9d92eea8874.zip | |
avoid a race condition that might lead to dnsmasq reading an empty resolv.conf (#2007)
SVN-Revision: 7952
| -rwxr-xr-x | package/base-files/files/usr/share/udhcpc/default.script | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/package/base-files/files/usr/share/udhcpc/default.script b/package/base-files/files/usr/share/udhcpc/default.script index a3a696be70..7ce3d2aa89 100755 --- a/package/base-files/files/usr/share/udhcpc/default.script +++ b/package/base-files/files/usr/share/udhcpc/default.script @@ -47,12 +47,13 @@ case "$1" in } [ -n "$dns" ] && { - echo -n > $RESOLV_CONF - ${domain:+echo search $domain} >> $RESOLV_CONF + echo -n > "${RESOLV_CONF}.tmp" + ${domain:+echo search $domain} >> "${RESOLV_CONF}.tmp" for i in $dns ; do echo "adding dns $i" - echo "nameserver $i" >> $RESOLV_CONF + echo "nameserver $i" >> "${RESOLV_CONF}.tmp" done + mv "${RESOLV_CONF}.tmp" "$RESOLV_CONF" } hotplug_event ifup |