[libvirt] [PATCH v4 4/9] daemon: support passing FDs from the calling process
First FD is the RW unix socket to listen on, second one (if
applicable) is the RO unix socket.
Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com>
---
daemon/libvirtd.c | 45 +++++++++++++++++++++++++++------------------
1 file changed, 27 insertions(+), 18 deletions(-)
diff --git a/daemon/libvirtd.c b/daemon/libvirtd.c
index a1f64ad..2c18c5e 100644
--- a/daemon/libvirtd.c
+++ b/daemon/libvirtd.c
@@ -56,6 +56,7 @@
#include "virstring.h"
#include "locking/lock_manager.h"
#include "viraccessmanager.h"
+#include "virutil.h"
#ifdef WITH_DRIVER_MODULES
# include "driver.h"
@@ -476,11 +477,19 @@ static int daemonSetupNetworking(virNetServerPtr srv,
int unix_sock_ro_mask = 0;
int unix_sock_rw_mask = 0;
+ unsigned int cur_fd = STDERR_FILENO + 1;
+ unsigned int nfds = virGetListenFDs();
+
if (config->unix_sock_group) {
if (virGetGroupID(config->unix_sock_group, &unix_sock_gid) < 0)
return -1;
}
+ if (nfds && nfds > ((int)!!sock_path + (int)!!sock_path_ro)) {
+ VIR_ERROR(_("Too many (%u) FDs passed from caller"), nfds);
+ return -1;
+ }
+
if (virStrToLong_i(config->unix_sock_ro_perms, NULL, 8, &unix_sock_ro_mask) !=
0) {
VIR_ERROR(_("Failed to parse mode '%s'"),
config->unix_sock_ro_perms);
goto error;
@@ -491,30 +500,30 @@ static int daemonSetupNetworking(virNetServerPtr srv,
goto error;
}
- VIR_DEBUG("Registering unix socket %s", sock_path);
- if (!(svc = virNetServerServiceNewUNIX(sock_path,
- unix_sock_rw_mask,
- unix_sock_gid,
- config->auth_unix_rw,
+ if (!(svc = virNetServerServiceNewFDOrUNIX(sock_path,
+ unix_sock_rw_mask,
+ unix_sock_gid,
+ config->auth_unix_rw,
#if WITH_GNUTLS
- NULL,
+ NULL,
#endif
- false,
- config->max_queued_clients,
- config->max_client_requests)))
+ false,
+ config->max_queued_clients,
+ config->max_client_requests,
+ nfds, &cur_fd)))
goto error;
if (sock_path_ro) {
- VIR_DEBUG("Registering unix socket %s", sock_path_ro);
- if (!(svcRO = virNetServerServiceNewUNIX(sock_path_ro,
- unix_sock_ro_mask,
- unix_sock_gid,
- config->auth_unix_ro,
+ if (!(svcRO = virNetServerServiceNewFDOrUNIX(sock_path_ro,
+ unix_sock_ro_mask,
+ unix_sock_gid,
+ config->auth_unix_ro,
#if WITH_GNUTLS
- NULL,
+ NULL,
#endif
- true,
- config->max_queued_clients,
- config->max_client_requests)))
+ true,
+ config->max_queued_clients,
+ config->max_client_requests,
+ nfds, &cur_fd)))
goto error;
}
--
2.0.4