6:13 a.m.
Move monitor socket connection, response handling and closing FDs code into
new functions in preparation for adding restore support for net devices.
Signed-off-by: Purna Pavan Chandra <paekkaladevi(a)linux.microsoft.com>
---
src/ch/ch_process.c | 121 +++++++++++++++++++++++++++++---------------
1 file changed, 80 insertions(+), 41 deletions(-)
diff --git a/src/ch/ch_process.c b/src/ch/ch_process.c
index 5907a6e81f..1943c4381b 100644
--- a/src/ch/ch_process.c
+++ b/src/ch/ch_process.c
@@ -490,6 +490,47 @@ virCHProcessSetup(virDomainObj *vm)
}
+/**
+ * chMonitorSocketConnect:
+ * @mon: pointer to monitor object
+ *
+ * Connects to the monitor socket. Caller is responsible for closing the socketfd
+ *
+ * Returns socket fd on success, -1 on error
+ */
+static int
+chMonitorSocketConnect(virCHMonitor *mon)
+{
+ struct sockaddr_un server_addr;
+ int sock;
+
+ sock = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (sock < 0) {
+ virReportSystemError(errno, "%s", _("Failed to open a UNIX
socket"));
+ return -1;
+ }
+
+ memset(&server_addr, 0, sizeof(server_addr));
+ server_addr.sun_family = AF_UNIX;
+ if (virStrcpyStatic(server_addr.sun_path, mon->socketpath) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("UNIX socket path '%1$s' too long"),
mon->socketpath);
+ goto error;
+ }
+
+ if (connect(sock, (struct sockaddr *)&server_addr,
+ sizeof(server_addr)) == -1) {
+ virReportSystemError(errno, "%s", _("Failed to connect to mon
socket"));
+ goto error;
+ }
+
+ return sock;
+ error:
+ VIR_FORCE_CLOSE(sock);
+ return -1;
+}
+
+
#define PKT_TIMEOUT_MS 500 /* ms */
static char *
@@ -532,6 +573,42 @@ chSocketRecv(int sock)
#undef PKT_TIMEOUT_MS
+static int
+chSocketProcessHttpResponse(int sock)
+{
+ g_autofree char *response = NULL;
+ int http_res;
+
+ response = chSocketRecv(sock);
+ if (response == NULL) {
+ return -1;
+ }
+
+ /* Parse the HTTP response code */
+ if (sscanf(response, "HTTP/1.%*d %d", &http_res) != 1) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Failed to parse HTTP response code"));
+ return -1;
+ }
+ if (http_res != 204 && http_res != 200) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Unexpected response from CH: %1$s"), response);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+chCloseFDs(int *fds, size_t nfds)
+{
+ size_t i;
+ for (i = 0; i < nfds; i++) {
+ VIR_FORCE_CLOSE(fds[i]);
+ }
+ return 0;
+}
+
/**
* chProcessAddNetworkDevices:
* @driver: pointer to ch driver object
@@ -554,7 +631,6 @@ chProcessAddNetworkDevices(virCHDriver *driver,
{
size_t i;
VIR_AUTOCLOSE mon_sockfd = -1;
- struct sockaddr_un server_addr;
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
g_auto(virBuffer) http_headers = VIR_BUFFER_INITIALIZER;
@@ -564,25 +640,8 @@ chProcessAddNetworkDevices(virCHDriver *driver,
return -1;
}
- mon_sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
- if (mon_sockfd < 0) {
- virReportSystemError(errno, "%s", _("Failed to open a UNIX
socket"));
- return -1;
- }
-
- memset(&server_addr, 0, sizeof(server_addr));
- server_addr.sun_family = AF_UNIX;
- if (virStrcpyStatic(server_addr.sun_path, mon->socketpath) < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("UNIX socket path '%1$s' too long"),
mon->socketpath);
- return -1;
- }
-
- if (connect(mon_sockfd, (struct sockaddr *)&server_addr,
- sizeof(server_addr)) == -1) {
- virReportSystemError(errno, "%s", _("Failed to connect to mon
socket"));
+ if ((mon_sockfd = chMonitorSocketConnect(mon)) < 0)
return -1;
- }
virBufferAddLit(&http_headers, "PUT /api/v1/vm.add-net HTTP/1.1\r\n");
virBufferAddLit(&http_headers, "Host: localhost\r\n");
@@ -592,11 +651,9 @@ chProcessAddNetworkDevices(virCHDriver *driver,
g_autofree int *tapfds = NULL;
g_autofree char *payload = NULL;
g_autofree char *response = NULL;
- size_t j;
size_t tapfd_len;
size_t payload_len;
int saved_errno;
- int http_res;
int rc;
if (vmdef->nets[i]->driver.virtio.queues == 0) {
@@ -640,9 +697,7 @@ chProcessAddNetworkDevices(virCHDriver *driver,
saved_errno = errno;
/* Close sent tap fds in Libvirt, as they have been dup()ed in CH */
- for (j = 0; j < tapfd_len; j++) {
- VIR_FORCE_CLOSE(tapfds[j]);
- }
+ chCloseFDs(tapfds, tapfd_len);
if (rc < 0) {
virReportSystemError(saved_errno, "%s",
@@ -650,24 +705,8 @@ chProcessAddNetworkDevices(virCHDriver *driver,
return -1;
}
- /* Process the response from CH */
- response = chSocketRecv(mon_sockfd);
- if (response == NULL) {
+ if (chSocketProcessHttpResponse(mon_sockfd) < 0)
return -1;
- }
-
- /* Parse the HTTP response code */
- rc = sscanf(response, "HTTP/1.%*d %d", &http_res);
- if (rc != 1) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Failed to parse HTTP response code"));
- return -1;
- }
- if (http_res != 204 && http_res != 200) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("Unexpected response from CH: %1$s"), response);
- return -1;
- }
}
return 0;
--
2.34.1