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Diffstat (limited to 'tools/hv/hv_vss_daemon.c')
-rw-r--r--tools/hv/hv_vss_daemon.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/tools/hv/hv_vss_daemon.c b/tools/hv/hv_vss_daemon.c
index 826d499dc354..4213d0e3083f 100644
--- a/tools/hv/hv_vss_daemon.c
+++ b/tools/hv/hv_vss_daemon.c
@@ -38,8 +38,6 @@
#include <linux/netlink.h>
#include <syslog.h>
-static char vss_recv_buffer[4096];
-static char vss_send_buffer[4096];
static struct sockaddr_nl addr;
#ifndef SOL_NETLINK
@@ -147,6 +145,9 @@ int main(void)
struct cn_msg *incoming_cn_msg;
int op;
struct hv_vss_msg *vss_msg;
+ char *vss_send_buffer;
+ char *vss_recv_buffer;
+ size_t vss_recv_buffer_len;
if (daemon(1, 0))
return 1;
@@ -154,6 +155,14 @@ int main(void)
openlog("Hyper-V VSS", 0, LOG_USER);
syslog(LOG_INFO, "VSS starting; pid is:%d", getpid());
+ vss_recv_buffer_len = NLMSG_HDRLEN + sizeof(struct cn_msg) + sizeof(struct hv_vss_msg);
+ vss_send_buffer = calloc(1, vss_recv_buffer_len);
+ vss_recv_buffer = calloc(1, vss_recv_buffer_len);
+ if (!(vss_send_buffer && vss_recv_buffer)) {
+ syslog(LOG_ERR, "Failed to allocate netlink buffers");
+ exit(EXIT_FAILURE);
+ }
+
fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
if (fd < 0) {
syslog(LOG_ERR, "netlink socket creation failed; error:%d %s",
@@ -215,7 +224,7 @@ int main(void)
continue;
}
- len = recvfrom(fd, vss_recv_buffer, sizeof(vss_recv_buffer), 0,
+ len = recvfrom(fd, vss_recv_buffer, vss_recv_buffer_len, 0,
addr_p, &addr_l);
if (len < 0) {