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| author | Guillaume Nault <g.nault@alphalink.fr> | 2014-04-28 21:16:09 +0200 |
|---|---|---|
| committer | Dmitry Kozlov <xeb@mail.ru> | 2014-04-29 09:51:08 +0400 |
| commit | 71df100daf6e995d0a356dc096836df9f38f8d8d (patch) | |
| tree | 014bfe3975f2ab3e27bc1da3a840c47098092dc7 | |
| parent | f9ef39d9e4e1b18bf21697598f543d7e5b288297 (diff) | |
| download | accel-ppp-71df100daf6e995d0a356dc096836df9f38f8d8d.tar.gz accel-ppp-71df100daf6e995d0a356dc096836df9f38f8d8d.zip | |
net-snmp: unshare file descriptors namespace
Use unshare(CLONE_FILES) to create a local file descriptors namespace
for the SNMP thread. This is similar to what was done in bf5340
'net-snmp: run snmp in "special" thread', but without calling clone()
directly. So the net-snmp plugin keeps running in a regular pthread.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
| -rw-r--r-- | accel-pppd/extra/net-snmp/agent.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/accel-pppd/extra/net-snmp/agent.c b/accel-pppd/extra/net-snmp/agent.c index 7e06a79..da866ab 100644 --- a/accel-pppd/extra/net-snmp/agent.c +++ b/accel-pppd/extra/net-snmp/agent.c @@ -1,5 +1,8 @@ +#include <errno.h> #include <pthread.h> +#include <sched.h> #include <signal.h> +#include <string.h> #include <net-snmp/net-snmp-config.h> #include <net-snmp/net-snmp-includes.h> @@ -79,6 +82,14 @@ static void *snmp_thread(void *a) sigdelset(&set, 32); pthread_sigmask(SIG_BLOCK, &set, NULL); + if (unshare(CLONE_FILES) < 0) { + log_error("net-snmp: impossible to start SNMP thread:" + " unshare(CLONE_FILES) failed (%s)\n", + strerror(errno)); + + return NULL; + } + snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_LOGGING, agent_log, NULL); snmp_disable_log(); snmp_enable_calllog(); |