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rpc: allow creating RPC service from an array of FDs

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The virNetServerServiceNewFD API only accepts a single FD, but it is
easily changed to allow for an array of FDs to be passed in.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2019-06-25 15:54:48 +01:00
parent 3b6bfde089
commit 9f3d1c5c8f
5 changed files with 52 additions and 34 deletions
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2
src/libvirt_remote.syms
View File

@ -202,8 +202,8 @@ virNetServerServiceGetMaxRequests;
virNetServerServiceGetPort;
virNetServerServiceGetTLSContext;
virNetServerServiceIsReadonly;
virNetServerServiceNewFD;
virNetServerServiceNewFDOrUNIX;
virNetServerServiceNewFDs;
virNetServerServiceNewPostExecRestart;
virNetServerServiceNewTCP;
virNetServerServiceNewUNIX;

9
src/locking/lock_daemon.c
View File

@ -597,6 +597,7 @@ virLockDaemonSetupNetworkingSystemD(virNetServerPtr lockSrv, virNetServerPtr adm
virNetServerServicePtr svc;
char *path = virGetUNIXSocketPath(3 + i);
virNetServerPtr srv;
int fds[] = { 3 + i };
if (!path)
return -1;
@ -616,9 +617,11 @@ virLockDaemonSetupNetworkingSystemD(virNetServerPtr lockSrv, virNetServerPtr adm
/* Systemd passes FDs, starting immediately after stderr,
* so the first FD we'll get is '3'. */
if (!(svc = virNetServerServiceNewFD(3 + i, 0,
NULL,
false, 0, 1)))
if (!(svc = virNetServerServiceNewFDs(fds,
ARRAY_CARDINALITY(fds),
0,
NULL,
false, 0, 1)))
return -1;
if (virNetServerAddService(srv, svc) < 0) {

9
src/logging/log_daemon.c
View File

@ -532,6 +532,7 @@ virLogDaemonSetupNetworkingSystemD(virNetServerPtr logSrv, virNetServerPtr admin
virNetServerServicePtr svc;
char *path = virGetUNIXSocketPath(3 + i);
virNetServerPtr srv;
int fds[] = { 3 + i };
if (!path)
return -1;
@ -551,9 +552,11 @@ virLogDaemonSetupNetworkingSystemD(virNetServerPtr logSrv, virNetServerPtr admin
/* Systemd passes FDs, starting immediately after stderr,
* so the first FD we'll get is '3'. */
if (!(svc = virNetServerServiceNewFD(3 + i, 0,
NULL,
false, 0, 1)))
if (!(svc = virNetServerServiceNewFDs(fds,
ARRAY_CARDINALITY(fds),
0,
NULL,
false, 0, 1)))
return -1;
if (virNetServerAddService(srv, svc) < 0) {

53
src/rpc/virnetserverservice.c
View File

@ -112,18 +112,20 @@ virNetServerServiceNewFDOrUNIX(const char *path,
nrequests_client_max);
} else {
int fds[] = {(*cur_fd)++};
/*
* There's still enough file descriptors. In this case we'll
* use the current one and increment it afterwards. Take care
* with order of operation for pointer arithmetic and auto
* increment on cur_fd - the parentheses are necessary.
*/
return virNetServerServiceNewFD((*cur_fd)++,
auth,
tls,
readonly,
max_queued_clients,
nrequests_client_max);
return virNetServerServiceNewFDs(fds,
ARRAY_CARDINALITY(fds),
auth,
tls,
readonly,
max_queued_clients,
nrequests_client_max);
}
}
@ -253,30 +255,39 @@ virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
return svc;
}
virNetServerServicePtr virNetServerServiceNewFD(int fd,
int auth,
virNetTLSContextPtr tls,
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max)
virNetServerServicePtr virNetServerServiceNewFDs(int *fds,
size_t nfds,
int auth,
virNetTLSContextPtr tls,
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max)
{
virNetServerServicePtr svc;
virNetSocketPtr sock;
virNetServerServicePtr svc = NULL;
virNetSocketPtr *socks;
size_t i;
if (virNetSocketNewListenFD(fd,
&sock) < 0)
return NULL;
if (VIR_ALLOC_N(socks, nfds) < 0)
goto cleanup;
svc = virNetServerServiceNewSocket(&sock,
1,
for (i = 0; i < nfds; i++) {
if (virNetSocketNewListenFD(fds[i],
&socks[i]) < 0)
goto cleanup;
}
svc = virNetServerServiceNewSocket(socks,
nfds,
auth,
tls,
readonly,
max_queued_clients,
nrequests_client_max);
virObjectUnref(sock);
cleanup:
for (i = 0; i < nfds && socks; i++)
virObjectUnref(socks[i]);
VIR_FREE(socks);
return svc;
}

13
src/rpc/virnetserverservice.h
View File

@ -60,12 +60,13 @@ virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max);
virNetServerServicePtr virNetServerServiceNewFD(int fd,
int auth,
virNetTLSContextPtr tls,
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max);
virNetServerServicePtr virNetServerServiceNewFDs(int *fd,
size_t nfds,
int auth,
virNetTLSContextPtr tls,
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max);
virNetServerServicePtr virNetServerServiceNewPostExecRestart(virJSONValuePtr object);