*/
#include <limits.h>
-#include <lttng/lttng.h>
+#include <unistd.h>
#include <ust/lttng-ust-abi.h>
/*
/* Queue size of listen(2) */
#define MAX_LISTEN 10
-/* Get the error code index from 0 since
- * LTTCOMM_OK start at 1000
+/* Get the error code index from 0. USTCOMM_ERR starts at 1000.
*/
-#define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_OK)
+#define USTCOMM_ERR_INDEX(code) (code - USTCOMM_ERR)
/*
- * lttcomm error code.
+ * ustcomm error code.
*/
-enum lttcomm_return_code {
- LTTCOMM_OK = 1000, /* Ok */
- LTTCOMM_ERR, /* Unknown Error */
- LTTCOMM_UND, /* Undefine command */
- LTTCOMM_NOT_IMPLEMENTED, /* Command not implemented */
- LTTCOMM_UNKNOWN_DOMAIN, /* Tracing domain not known */
- LTTCOMM_ALLOC_FAIL, /* Trace allocation fail */
- LTTCOMM_NO_SESSION, /* No session found */
- LTTCOMM_CREATE_FAIL, /* Create trace fail */
- LTTCOMM_SESSION_FAIL, /* Create session fail */
- LTTCOMM_START_FAIL, /* Start tracing fail */
- LTTCOMM_STOP_FAIL, /* Stop tracing fail */
- LTTCOMM_LIST_FAIL, /* Listing apps fail */
- LTTCOMM_NO_APPS, /* No traceable application */
- LTTCOMM_SESS_NOT_FOUND, /* Session name not found */
- LTTCOMM_NO_TRACE, /* No trace exist */
- LTTCOMM_FATAL, /* Session daemon had a fatal error */
- LTTCOMM_NO_TRACEABLE, /* Error for non traceable app */
- LTTCOMM_SELECT_SESS, /* Must select a session */
- LTTCOMM_EXIST_SESS, /* Session name already exist */
- LTTCOMM_NO_EVENT, /* No event found */
- LTTCOMM_KERN_NA, /* Kernel tracer unavalable */
- LTTCOMM_KERN_EVENT_EXIST, /* Kernel event already exists */
- LTTCOMM_KERN_SESS_FAIL, /* Kernel create session failed */
- LTTCOMM_KERN_CHAN_FAIL, /* Kernel create channel failed */
- LTTCOMM_KERN_CHAN_NOT_FOUND, /* Kernel channel not found */
- LTTCOMM_KERN_CHAN_DISABLE_FAIL, /* Kernel disable channel failed */
- LTTCOMM_KERN_CHAN_ENABLE_FAIL, /* Kernel enable channel failed */
- LTTCOMM_KERN_CONTEXT_FAIL, /* Kernel add context failed */
- LTTCOMM_KERN_ENABLE_FAIL, /* Kernel enable event failed */
- LTTCOMM_KERN_DISABLE_FAIL, /* Kernel disable event failed */
- LTTCOMM_KERN_META_FAIL, /* Kernel open metadata failed */
- LTTCOMM_KERN_START_FAIL, /* Kernel start trace failed */
- LTTCOMM_KERN_STOP_FAIL, /* Kernel stop trace failed */
- LTTCOMM_KERN_CONSUMER_FAIL, /* Kernel consumer start failed */
- LTTCOMM_KERN_STREAM_FAIL, /* Kernel create stream failed */
- LTTCOMM_KERN_DIR_FAIL, /* Kernel trace directory creation failed */
- LTTCOMM_KERN_DIR_EXIST, /* Kernel trace directory exist */
- LTTCOMM_KERN_NO_SESSION, /* No kernel session found */
- LTTCOMM_KERN_LIST_FAIL, /* Kernel listing events failed */
- KCONSUMERD_COMMAND_SOCK_READY, /* when kconsumerd command socket ready */
- KCONSUMERD_SUCCESS_RECV_FD, /* success on receiving fds */
- KCONSUMERD_ERROR_RECV_FD, /* error on receiving fds */
- KCONSUMERD_POLL_ERROR, /* Error in polling thread in kconsumerd */
- KCONSUMERD_POLL_NVAL, /* Poll on closed fd */
- KCONSUMERD_POLL_HUP, /* All fds have hungup */
- KCONSUMERD_EXIT_SUCCESS, /* kconsumerd exiting normally */
- KCONSUMERD_EXIT_FAILURE, /* kconsumerd exiting on error */
- KCONSUMERD_OUTFD_ERROR, /* error opening the tracefile */
- KCONSUMERD_SPLICE_EBADF, /* EBADF from splice(2) */
- KCONSUMERD_SPLICE_EINVAL, /* EINVAL from splice(2) */
- KCONSUMERD_SPLICE_ENOMEM, /* ENOMEM from splice(2) */
- KCONSUMERD_SPLICE_ESPIPE, /* ESPIPE from splice(2) */
+enum ustcomm_return_code {
+ USTCOMM_OK = 0, /* Ok */
+ /* Range 1 to 999 used for standard error numbers (errno.h) */
+ USTCOMM_ERR = 1000, /* Unknown Error */
+ USTCOMM_UND, /* Undefine command */
+ USTCOMM_NOT_IMPLEMENTED, /* Command not implemented */
+ USTCOMM_UNKNOWN_DOMAIN, /* Tracing domain not known */
+ USTCOMM_ALLOC_FAIL, /* Trace allocation fail */
+ USTCOMM_NO_SESSION, /* No session found */
+ USTCOMM_CREATE_FAIL, /* Create trace fail */
+ USTCOMM_SESSION_FAIL, /* Create session fail */
+ USTCOMM_START_FAIL, /* Start tracing fail */
+ USTCOMM_STOP_FAIL, /* Stop tracing fail */
+ USTCOMM_LIST_FAIL, /* Listing apps fail */
+ USTCOMM_NO_APPS, /* No traceable application */
+ USTCOMM_SESS_NOT_FOUND, /* Session name not found */
+ USTCOMM_NO_TRACE, /* No trace exist */
+ USTCOMM_FATAL, /* Session daemon had a fatal error */
+ USTCOMM_NO_TRACEABLE, /* Error for non traceable app */
+ USTCOMM_SELECT_SESS, /* Must select a session */
+ USTCOMM_EXIST_SESS, /* Session name already exist */
+ USTCOMM_NO_EVENT, /* No event found */
+ USTCOMM_KERN_NA, /* Kernel tracer unavalable */
+ USTCOMM_KERN_EVENT_EXIST, /* Kernel event already exists */
+ USTCOMM_KERN_SESS_FAIL, /* Kernel create session failed */
+ USTCOMM_KERN_CHAN_FAIL, /* Kernel create channel failed */
+ USTCOMM_KERN_CHAN_NOT_FOUND, /* Kernel channel not found */
+ USTCOMM_KERN_CHAN_DISABLE_FAIL, /* Kernel disable channel failed */
+ USTCOMM_KERN_CHAN_ENABLE_FAIL, /* Kernel enable channel failed */
+ USTCOMM_KERN_CONTEXT_FAIL, /* Kernel add context failed */
+ USTCOMM_KERN_ENABLE_FAIL, /* Kernel enable event failed */
+ USTCOMM_KERN_DISABLE_FAIL, /* Kernel disable event failed */
+ USTCOMM_KERN_META_FAIL, /* Kernel open metadata failed */
+ USTCOMM_KERN_START_FAIL, /* Kernel start trace failed */
+ USTCOMM_KERN_STOP_FAIL, /* Kernel stop trace failed */
+ USTCOMM_KERN_CONSUMER_FAIL, /* Kernel consumer start failed */
+ USTCOMM_KERN_STREAM_FAIL, /* Kernel create stream failed */
+ USTCOMM_KERN_DIR_FAIL, /* Kernel trace directory creation failed */
+ USTCOMM_KERN_DIR_EXIST, /* Kernel trace directory exist */
+ USTCOMM_KERN_NO_SESSION, /* No kernel session found */
+ USTCOMM_KERN_LIST_FAIL, /* Kernel listing events failed */
+ USTCONSUMER_COMMAND_SOCK_READY, /* when kconsumerd command socket ready */
+ USTCONSUMER_SUCCESS_RECV_FD, /* success on receiving fds */
+ USTCONSUMER_ERROR_RECV_FD, /* error on receiving fds */
+ USTCONSUMER_POLL_ERROR, /* Error in polling thread in kconsumerd */
+ USTCONSUMER_POLL_NVAL, /* Poll on closed fd */
+ USTCONSUMER_POLL_HUP, /* All fds have hungup */
+ USTCONSUMER_EXIT_SUCCESS, /* kconsumerd exiting normally */
+ USTCONSUMER_EXIT_FAILURE, /* kconsumerd exiting on error */
+ USTCONSUMER_OUTFD_ERROR, /* error opening the tracefile */
+ USTCONSUMER_SPLICE_EBADF, /* EBADF from splice(2) */
+ USTCONSUMER_SPLICE_EINVAL, /* EINVAL from splice(2) */
+ USTCONSUMER_SPLICE_ENOMEM, /* ENOMEM from splice(2) */
+ USTCONSUMER_SPLICE_ESPIPE, /* ESPIPE from splice(2) */
/* MUST be last element */
- LTTCOMM_NR, /* Last element */
+ USTCOMM_NR, /* Last element */
};
/*
* Data structure for the commands sent from sessiond to UST.
*/
-struct lttcomm_ust_msg {
+struct ustcomm_ust_msg {
uint32_t handle;
uint32_t cmd;
union {
- struct lttng_ust_tracer_version version;
struct lttng_ust_channel channel;
struct lttng_ust_stream stream;
struct lttng_ust_event event;
struct lttng_ust_context context;
+ struct lttng_ust_tracer_version version;
} u;
};
* Data structure for the response from UST to the session daemon.
* cmd_type is sent back in the reply for validation.
*/
-struct lttcomm_ust_reply {
+struct ustcomm_ust_reply {
uint32_t handle;
uint32_t cmd;
- uint32_t ret_code; /* enum enum lttcomm_return_code */
+ uint32_t ret_code; /* enum enum ustcomm_return_code */
uint32_t ret_val; /* return value */
union {
struct {
struct {
uint64_t memory_map_size;
} stream;
+ struct lttng_ust_tracer_version version;
} u;
};
-extern int lttcomm_create_unix_sock(const char *pathname);
-extern int lttcomm_connect_unix_sock(const char *pathname);
-extern int lttcomm_accept_unix_sock(int sock);
-extern int lttcomm_listen_unix_sock(int sock);
-extern int lttcomm_close_unix_sock(int sock);
+extern int ustcomm_create_unix_sock(const char *pathname);
+extern int ustcomm_connect_unix_sock(const char *pathname);
+extern int ustcomm_accept_unix_sock(int sock);
+extern int ustcomm_listen_unix_sock(int sock);
+extern int ustcomm_close_unix_sock(int sock);
/* Send fd(s) over a unix socket. */
-extern ssize_t lttcomm_send_fds_unix_sock(int sock, void *buf, int *fds,
+extern ssize_t ustcomm_send_fds_unix_sock(int sock, void *buf, int *fds,
size_t nb_fd, size_t len);
-extern ssize_t lttcomm_recv_unix_sock(int sock, void *buf, size_t len);
-extern ssize_t lttcomm_send_unix_sock(int sock, void *buf, size_t len);
-extern const char *lttcomm_get_readable_code(enum lttcomm_return_code code);
+extern ssize_t ustcomm_recv_unix_sock(int sock, void *buf, size_t len);
+extern ssize_t ustcomm_send_unix_sock(int sock, void *buf, size_t len);
+extern const char *ustcomm_get_readable_code(int code);
+extern int ustcomm_send_app_msg(int sock, struct ustcomm_ust_msg *lum);
+extern int ustcomm_recv_app_reply(int sock, struct ustcomm_ust_reply *lur,
+ uint32_t expected_handle, uint32_t expected_cmd);
+extern int ustcomm_send_app_cmd(int sock,
+ struct ustcomm_ust_msg *lum,
+ struct ustcomm_ust_reply *lur);
+int ustcomm_recv_fd(int sock);
#endif /* _LTTNG_UST_COMM_H */
projects / lttng-ust.git / blobdiff