** Description changed:
- apparmor="DENIED" operation="open" parent=31445
- profile="/usr/sbin/dhcpd" name="/run/dhcp-server/dhcpd.pid" pid=31446
- comm="dhcpd" requested_mask="r" denied_mask="r" fsuid=121 ouid=121
+ This bug is present in the latest versions of isc-dhcp-server available
+ in precise and in natty.
+
+ This bugs prevents dhcpd from detecting the presence of an already
+ running dhcpd, the result is multiple copies of dhcpd running when there
+ should only ever be one ( or none ).
- Apparmor config for dhcpd
+ apparmor="DENIED" operation="open" parent=31445 profile="/usr/sbin/dhcpd"
name="/run/dhcp-server/dhcpd.pid" pid=31446 comm="dhcpd" requested_mask="r"
denied_mask="r" fsuid=121 ouid=121
+
+ Apparmor config for dhcpd
/{,var/}run/{,dhcp-server/}dhcpd{,6}.pid w,
dhcpd needs access to read the pid file in server/dhcpd.c
+ /*Read previous pid file. */
+ if ((i = open (path_dhcpd_pid, O_RDONLY)) >= 0) {
+ status = read(i, pbuf, (sizeof pbuf) - 1);
+ close (i);
+ if (status > 0) {
+ pbuf[status] = 0;
+ pid = atoi(pbuf);
- /*Read previous pid file. */
- if ((i = open (path_dhcpd_pid, O_RDONLY)) >= 0) {
- status = read(i, pbuf, (sizeof pbuf) - 1);
- close (i);
- if (status > 0) {
- pbuf[status] = 0;
- pid = atoi(pbuf);
-
- /*
- * If there was a previous server process and
- * it is still running, abort
- */
- if (!pid ||
- (pid != getpid() && kill(pid, 0) == 0))
- log_fatal("There's already a "
- "DHCP server running.");
- }
- }
-
- This bug is present in precise and in natty
+ /*
+ * If there was a previous server process and
+ * it is still running, abort
+ */
+ if (!pid ||
+ (pid != getpid() && kill(pid, 0) == 0))
+ log_fatal("There's already a "
+ "DHCP server running.");
+ }
+ }
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https://bugs.launchpad.net/bugs/1005062
Title:
dhcpd cannot READ /var/run/dhcpd.pid because of bad apparmor config
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