/*
* Connect to unix socket using the path name.
*/
+__attribute__((visibility("hidden")))
int lttcomm_connect_unix_sock(const char *pathname)
{
struct sockaddr_un sun;
* Do an accept(2) on the sock and return the new file descriptor. The socket
* MUST be bind(2) before.
*/
+__attribute__((visibility("hidden")))
int lttcomm_accept_unix_sock(int sock)
{
int new_fd;
* Creates a AF_UNIX local socket using pathname bind the socket upon creation
* and return the fd.
*/
+__attribute__((visibility("hidden")))
int lttcomm_create_unix_sock(const char *pathname)
{
struct sockaddr_un sun;
/*
* Make the socket listen using LTTNG_SESSIOND_COMM_MAX_LISTEN.
*/
+__attribute__((visibility("hidden")))
int lttcomm_listen_unix_sock(int sock)
{
int ret;
*
* Return the size of received data.
*/
+__attribute__((visibility("hidden")))
ssize_t lttcomm_recv_unix_sock(int sock, void *buf, size_t len)
{
struct msghdr msg;
struct iovec iov[1];
ssize_t ret = -1;
+ size_t len_last;
memset(&msg, 0, sizeof(msg));
msg.msg_iovlen = 1;
do {
- ret = recvmsg(sock, &msg, MSG_WAITALL);
- } while (ret < 0 && errno == EINTR);
+ len_last = iov[0].iov_len;
+ ret = recvmsg(sock, &msg, 0);
+ if (ret > 0) {
+ iov[0].iov_base += ret;
+ iov[0].iov_len -= ret;
+ assert(ret <= len_last);
+ }
+ } while ((ret > 0 && ret < len_last) || (ret < 0 && errno == EINTR));
if (ret < 0) {
PERROR("recvmsg");
+ } else if (ret > 0) {
+ ret = len;
}
+ /* Else ret = 0 meaning an orderly shutdown. */
return ret;
}
*
* Return the size of sent data.
*/
+__attribute__((visibility("hidden")))
ssize_t lttcomm_send_unix_sock(int sock, void *buf, size_t len)
{
struct msghdr msg;
/*
* Shutdown cleanly a unix socket.
*/
+__attribute__((visibility("hidden")))
int lttcomm_close_unix_sock(int sock)
{
int ret, closeret;
*
* Returns the size of data sent, or negative error value.
*/
+__attribute__((visibility("hidden")))
ssize_t lttcomm_send_fds_unix_sock(int sock, int *fds, size_t nb_fd)
{
struct msghdr msg;
* Expect at most "nb_fd" file descriptors. Returns the number of fd
* actually received in nb_fd.
*/
+__attribute__((visibility("hidden")))
ssize_t lttcomm_recv_fds_unix_sock(int sock, int *fds, size_t nb_fd)
{
struct iovec iov[1];
*
* Returns the size of data sent, or negative error value.
*/
+__attribute__((visibility("hidden")))
ssize_t lttcomm_send_creds_unix_sock(int sock, void *buf, size_t len)
{
struct msghdr msg;
*
* Returns the size of received data, or negative error value.
*/
+__attribute__((visibility("hidden")))
ssize_t lttcomm_recv_creds_unix_sock(int sock, void *buf, size_t len,
lttng_sock_cred *creds)
{
* Set socket option to use credentials passing.
*/
#ifdef __linux__
+__attribute__((visibility("hidden")))
int lttcomm_setsockopt_creds_unix_sock(int sock)
{
int ret, on = 1;
return ret;
}
#elif (defined(__FreeBSD__) || defined(__CYGWIN__))
+__attribute__((visibility("hidden")))
int lttcomm_setsockopt_creds_unix_sock(int sock)
{
return 0;
#else
#error "Please implement credential support for your OS."
#endif /* __linux__ */
+
+/*
+ * Set socket reciving timeout.
+ */
+__attribute__((visibility("hidden")))
+int lttcomm_setsockopt_rcv_timeout(int sock, unsigned int sec)
+{
+ int ret;
+ struct timeval tv;
+
+ tv.tv_sec = sec;
+ tv.tv_usec = 0;
+
+ ret = setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
+ if (ret < 0) {
+ PERROR("setsockopt SO_RCVTIMEO");
+ ret = -errno;
+ }
+
+ return ret;
+}
+
+/*
+ * Set socket sending timeout.
+ */
+__attribute__((visibility("hidden")))
+int lttcomm_setsockopt_snd_timeout(int sock, unsigned int sec)
+{
+ int ret;
+ struct timeval tv;
+
+ tv.tv_sec = sec;
+ tv.tv_usec = 0;
+
+ ret = setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
+ if (ret < 0) {
+ PERROR("setsockopt SO_SNDTIMEO");
+ ret = -errno;
+ }
+
+ return ret;
+}