#include "sessiond-comm.h"
+/* For Unix socket */
+#include "unix.h"
+/* For Inet socket */
+#include "inet.h"
+/* For Inet6 socket */
+#include "inet6.h"
+
+static struct lttcomm_net_family net_families[] = {
+ { LTTCOMM_INET, lttcomm_create_inet_sock },
+ { LTTCOMM_INET6, lttcomm_create_inet6_sock },
+};
+
/*
* Human readable error message.
*/
static const char *lttcomm_readable_code[] = {
- [ LTTCOMM_ERR_INDEX(LTTCOMM_OK) ] = "Success",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_ERR) ] = "Unknown error",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UND) ] = "Undefined command",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NOT_IMPLEMENTED) ] = "Not implemented",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UNKNOWN_DOMAIN) ] = "Unknown tracing domain",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_SESSION) ] = "No session found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_LIST_FAIL) ] = "Unable to list traceable apps",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_APPS) ] = "No traceable apps found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_SESS_NOT_FOUND) ] = "Session name not found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_TRACE) ] = "No trace found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_FATAL) ] = "Fatal error of the session daemon",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_CREATE_DIR_FAIL) ] = "Create directory failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_START_FAIL) ] = "Start trace failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_STOP_FAIL) ] = "Stop trace failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_TRACEABLE) ] = "App is not traceable",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_SELECT_SESS) ] = "A session MUST be selected",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_EXIST_SESS) ] = "Session name already exist",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_CONNECT_FAIL) ] = "Unable to connect to Unix socket",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_APP_NOT_FOUND) ] = "Application not found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_EPERM) ] = "Permission denied",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_NA) ] = "Kernel tracer not available",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_VERSION) ] = "Kernel tracer version is not compatible",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_EVENT_EXIST) ] = "Kernel event already exists",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_SESS_FAIL) ] = "Kernel create session failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_EXIST) ] = "Kernel channel already exists",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_FAIL) ] = "Kernel create channel failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_NOT_FOUND) ] = "Kernel channel not found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_DISABLE_FAIL) ] = "Disable kernel channel failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_ENABLE_FAIL) ] = "Enable kernel channel failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CONTEXT_FAIL) ] = "Add kernel context failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_ENABLE_FAIL) ] = "Enable kernel event failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_DISABLE_FAIL) ] = "Disable kernel event failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_META_FAIL) ] = "Opening metadata failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_START_FAIL) ] = "Starting kernel trace failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_STOP_FAIL) ] = "Stoping kernel trace failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CONSUMER_FAIL) ] = "Kernel consumer start failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_STREAM_FAIL) ] = "Kernel create stream failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_DIR_FAIL) ] = "Kernel trace directory creation failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_DIR_EXIST) ] = "Kernel trace directory already exist",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_NO_SESSION) ] = "No kernel session found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_LIST_FAIL) ] = "Listing kernel events failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CALIBRATE_FAIL) ] = "UST calibration failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_VERSION) ] = "UST tracer version is not compatible",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_SESS_FAIL) ] = "UST create session failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_FAIL) ] = "UST create channel failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_EXIST) ] = "UST channel already exist",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_NOT_FOUND) ] = "UST channel not found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_DISABLE_FAIL) ] = "Disable UST channel failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_ENABLE_FAIL) ] = "Enable UST channel failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONTEXT_FAIL) ] = "Add UST context failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_ENABLE_FAIL) ] = "Enable UST event failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_DISABLE_FAIL) ] = "Disable UST event failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_META_FAIL) ] = "Opening metadata failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_START_FAIL) ] = "Starting UST trace failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_STOP_FAIL) ] = "Stoping UST trace failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONSUMER64_FAIL) ] = "64-bit UST consumer start failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONSUMER32_FAIL) ] = "32-bit UST consumer start failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_STREAM_FAIL) ] = "UST create stream failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_DIR_FAIL) ] = "UST trace directory creation failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_DIR_EXIST) ] = "UST trace directory already exist",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_NO_SESSION) ] = "No UST session found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_LIST_FAIL) ] = "Listing UST events failed",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_EVENT_EXIST) ] = "UST event already exist",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_EVENT_NOT_FOUND)] = "UST event not found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONTEXT_EXIST)] = "UST context already exist",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONTEXT_INVAL)] = "UST invalid context",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NEED_ROOT_SESSIOND) ] = "Tracing the kernel requires a root lttng-sessiond daemon and \"tracing\" group user membership",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_TRACE_ALREADY_STARTED) ] = "Tracing already started",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_TRACE_ALREADY_STOPPED) ] = "Tracing already stopped",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_EVENT_ENOSYS) ] = "Kernel event type not supported",
-
- [ LTTCOMM_ERR_INDEX(CONSUMERD_COMMAND_SOCK_READY) ] = "consumerd command socket ready",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_SUCCESS_RECV_FD) ] = "consumerd success on receiving fds",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_ERROR_RECV_FD) ] = "consumerd error on receiving fds",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_ERROR_RECV_CMD) ] = "consumerd error on receiving command",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_POLL_ERROR) ] = "consumerd error in polling thread",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_POLL_NVAL) ] = "consumerd polling on closed fd",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_POLL_HUP) ] = "consumerd all fd hung up",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_EXIT_SUCCESS) ] = "consumerd exiting normally",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_EXIT_FAILURE) ] = "consumerd exiting on error",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_OUTFD_ERROR) ] = "consumerd error opening the tracefile",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_SPLICE_EBADF) ] = "consumerd splice EBADF",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_SPLICE_EINVAL) ] = "consumerd splice EINVAL",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_SPLICE_ENOMEM) ] = "consumerd splice ENOMEM",
- [ LTTCOMM_ERR_INDEX(CONSUMERD_SPLICE_ESPIPE) ] = "consumerd splice ESPIPE",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_EVENT) ] = "Event not found",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_INVALID) ] = "Invalid parameter",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_USTCONSUMERD) ] = "No UST consumer detected",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_KERNCONSUMERD) ] = "No kernel consumer detected",
- [ LTTCOMM_ERR_INDEX(LTTCOMM_EVENT_EXIST_LOGLEVEL) ] = "Event already enabled with different loglevel",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_COMMAND_SOCK_READY) ] = "consumerd command socket ready",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SUCCESS_RECV_FD) ] = "consumerd success on receiving fds",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_FD) ] = "consumerd error on receiving fds",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_CMD) ] = "consumerd error on receiving command",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_ERROR) ] = "consumerd error in polling thread",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_NVAL) ] = "consumerd polling on closed fd",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_HUP) ] = "consumerd all fd hung up",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_SUCCESS) ] = "consumerd exiting normally",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_FAILURE) ] = "consumerd exiting on error",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_OUTFD_ERROR) ] = "consumerd error opening the tracefile",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EBADF) ] = "consumerd splice EBADF",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EINVAL) ] = "consumerd splice EINVAL",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ENOMEM) ] = "consumerd splice ENOMEM",
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ESPIPE) ] = "consumerd splice ESPIPE",
+
+ /* Last element */
+ [ LTTCOMM_ERR_INDEX(LTTCOMM_NR) ] = "Unknown error code"
};
/*
*
* These code MUST be negative in other to treat that as an error value.
*/
+__attribute__((visibility("hidden")))
const char *lttcomm_get_readable_code(enum lttcomm_return_code code)
{
- int tmp_code = -code;
+ code = -code;
+
+ if (code < LTTCOMM_CONSUMERD_COMMAND_SOCK_READY && code > LTTCOMM_NR) {
+ code = LTTCOMM_NR;
+ }
+
+ return lttcomm_readable_code[LTTCOMM_ERR_INDEX(code)];
+}
+
+/*
+ * Create socket from an already allocated lttcomm socket structure and init
+ * sockaddr in the lttcomm sock.
+ */
+__attribute__((visibility("hidden")))
+int lttcomm_create_sock(struct lttcomm_sock *sock)
+{
+ int ret, _sock_type, _sock_proto, domain;
+
+ assert(sock);
+
+ domain = sock->sockaddr.type;
+ if (domain != LTTCOMM_INET && domain != LTTCOMM_INET6) {
+ ERR("Create socket of unknown domain %d", domain);
+ ret = -1;
+ goto error;
+ }
+
+ switch (sock->proto) {
+ case LTTCOMM_SOCK_UDP:
+ _sock_type = SOCK_DGRAM;
+ _sock_proto = IPPROTO_UDP;
+ break;
+ case LTTCOMM_SOCK_TCP:
+ _sock_type = SOCK_STREAM;
+ _sock_proto = IPPROTO_TCP;
+ break;
+ default:
+ ret = -1;
+ goto error;
+ }
+
+ ret = net_families[domain].create(sock, _sock_type, _sock_proto);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ return ret;
+}
+
+/*
+ * Return allocated lttcomm socket structure.
+ */
+__attribute__((visibility("hidden")))
+struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto)
+{
+ struct lttcomm_sock *sock;
+
+ sock = zmalloc(sizeof(struct lttcomm_sock));
+ if (sock == NULL) {
+ PERROR("zmalloc create sock");
+ goto end;
+ }
+
+ sock->proto = proto;
+ sock->fd = -1;
+
+end:
+ return sock;
+}
+
+/*
+ * Return an allocated lttcomm socket structure and copy src content into
+ * the newly created socket.
+ *
+ * This is mostly useful when lttcomm_sock are passed between process where the
+ * fd and ops have to be changed within the correct address space.
+ */
+__attribute__((visibility("hidden")))
+struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src)
+{
+ struct lttcomm_sock *sock;
+
+ /* Safety net */
+ assert(src);
+
+ sock = lttcomm_alloc_sock(src->proto);
+ if (sock == NULL) {
+ goto alloc_error;
+ }
+
+ lttcomm_copy_sock(sock, src);
+
+alloc_error:
+ return sock;
+}
+
+/*
+ * Create and copy socket from an allocated lttcomm socket structure.
+ *
+ * This is mostly useful when lttcomm_sock are passed between process where the
+ * fd and ops have to be changed within the correct address space.
+ */
+__attribute__((visibility("hidden")))
+void lttcomm_copy_sock(struct lttcomm_sock *dst, struct lttcomm_sock *src)
+{
+ /* Safety net */
+ assert(dst);
+ assert(src);
+
+ dst->proto = src->proto;
+ dst->fd = src->fd;
+ dst->ops = src->ops;
+ /* Copy sockaddr information from original socket */
+ memcpy(&dst->sockaddr, &src->sockaddr, sizeof(dst->sockaddr));
+}
+
+/*
+ * Init IPv4 sockaddr structure.
+ */
+__attribute__((visibility("hidden")))
+int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr,
+ const char *ip, unsigned int port)
+{
+ int ret;
+
+ assert(sockaddr);
+ assert(ip);
+ assert(port > 0 && port <= 65535);
+
+ memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));
+
+ sockaddr->type = LTTCOMM_INET;
+ sockaddr->addr.sin.sin_family = AF_INET;
+ sockaddr->addr.sin.sin_port = htons(port);
+ ret = inet_pton(sockaddr->addr.sin.sin_family, ip,
+ &sockaddr->addr.sin.sin_addr);
+ if (ret < 1) {
+ ret = -1;
+ ERR("%s with port %d: unrecognized IPv4 address", ip, port);
+ goto error;
+ }
+ memset(sockaddr->addr.sin.sin_zero, 0, sizeof(sockaddr->addr.sin.sin_zero));
+
+error:
+ return ret;
+}
+
+/*
+ * Init IPv6 sockaddr structure.
+ */
+__attribute__((visibility("hidden")))
+int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr,
+ const char *ip, unsigned int port)
+{
+ int ret;
+
+ assert(sockaddr);
+ assert(ip);
+ assert(port > 0 && port <= 65535);
+
+ memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));
+
+ sockaddr->type = LTTCOMM_INET6;
+ sockaddr->addr.sin6.sin6_family = AF_INET6;
+ sockaddr->addr.sin6.sin6_port = htons(port);
+ ret = inet_pton(sockaddr->addr.sin6.sin6_family, ip,
+ &sockaddr->addr.sin6.sin6_addr);
+ if (ret < 1) {
+ ret = -1;
+ goto error;
+ }
+
+error:
+ return ret;
+}
+
+/*
+ * Return allocated lttcomm socket structure from lttng URI.
+ */
+__attribute__((visibility("hidden")))
+struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri)
+{
+ int ret;
+ int _sock_proto;
+ struct lttcomm_sock *sock = NULL;
- if (tmp_code >= LTTCOMM_OK && tmp_code < LTTCOMM_NR) {
- return lttcomm_readable_code[LTTCOMM_ERR_INDEX(tmp_code)];
+ /* Safety net */
+ assert(uri);
+
+ /* Check URI protocol */
+ if (uri->proto == LTTNG_TCP) {
+ _sock_proto = LTTCOMM_SOCK_TCP;
+ } else {
+ ERR("Relayd invalid URI proto: %d", uri->proto);
+ goto alloc_error;
}
- return "Unknown error code";
+ sock = lttcomm_alloc_sock(_sock_proto);
+ if (sock == NULL) {
+ goto alloc_error;
+ }
+
+ /* Check destination type */
+ if (uri->dtype == LTTNG_DST_IPV4) {
+ ret = lttcomm_init_inet_sockaddr(&sock->sockaddr, uri->dst.ipv4,
+ uri->port);
+ if (ret < 0) {
+ goto error;
+ }
+ } else if (uri->dtype == LTTNG_DST_IPV6) {
+ ret = lttcomm_init_inet6_sockaddr(&sock->sockaddr, uri->dst.ipv6,
+ uri->port);
+ if (ret < 0) {
+ goto error;
+ }
+ } else {
+ /* Command URI is invalid */
+ ERR("Relayd invalid URI dst type: %d", uri->dtype);
+ goto error;
+ }
+
+ return sock;
+
+error:
+ lttcomm_destroy_sock(sock);
+alloc_error:
+ return NULL;
+}
+
+/*
+ * Destroy and free lttcomm socket.
+ */
+__attribute__((visibility("hidden")))
+void lttcomm_destroy_sock(struct lttcomm_sock *sock)
+{
+ if (sock != NULL) {
+ free(sock);
+ }
}
projects / lttng-tools.git / blobdiff