diff options
Diffstat (limited to 'tools/hv/hv_vss_daemon.c')
| -rw-r--r-- | tools/hv/hv_vss_daemon.c | 15 |
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) { |