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authortilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b>2009-01-29 22:54:29 +0000
committertilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b>2009-01-29 22:54:29 +0000
commit0ff5ae8abf03b712c34e869948652f20dbd858f9 (patch)
treebbb253ebe3936896c27af17928c80ed7025d9244 /apps/app_externalivr.c
parent2a514c914219bb3e8628021109b509d8087488d4 (diff)
Lose the CAP_NET_ADMIN at every fork, instead of at startup. Otherwise, if
Asterisk runs as a non-root user and the administrator does a 'restart now', Asterisk loses the ability to set QOS on packets. (closes issue #14004) Reported by: nemo Patches: 20090105__bug14004.diff.txt uploaded by Corydon76 (license 14) Tested by: Corydon76 git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.4@172438 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'apps/app_externalivr.c')
-rw-r--r--apps/app_externalivr.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/apps/app_externalivr.c b/apps/app_externalivr.c
index 8004fecd1..42fd469c3 100644
--- a/apps/app_externalivr.c
+++ b/apps/app_externalivr.c
@@ -31,6 +31,10 @@
* \ingroup applications
*/
+/*** MODULEINFO
+ <depend>working_fork</depend>
+ ***/
+
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
@@ -41,6 +45,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <unistd.h>
#include <errno.h>
#include <signal.h>
+#ifdef HAVE_CAP
+#include <sys/capability.h>
+#endif /* HAVE_CAP */
#include "asterisk/lock.h"
#include "asterisk/file.h"
@@ -317,6 +324,15 @@ static int app_exec(struct ast_channel *chan, void *data)
if (!pid) {
/* child process */
int i;
+#ifdef HAVE_CAP
+ cap_t cap = cap_from_text("cap_net_admin-eip");
+
+ if (cap_set_proc(cap)) {
+ /* Careful with order! Logging cannot happen after we close FDs */
+ ast_log(LOG_WARNING, "Unable to remove capabilities.\n");
+ }
+ cap_free(cap);
+#endif
signal(SIGPIPE, SIG_DFL);
pthread_sigmask(SIG_UNBLOCK, &fullset, NULL);