#include <limits.h>
#include <uuid/uuid.h>
-/*
- * FIXME: 32, 64bit enums -> uint32_t uint64_t for data exchange.
- * Same for pid_t.
- */
+#include "lttng-share.h"
#define LTTNG_RUNDIR "/var/run/lttng"
#define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_OK)
enum lttcomm_sessiond_command {
+ KERNEL_CREATE_CHANNEL,
+ KERNEL_CREATE_SESSION,
+ KERNEL_DISABLE_EVENT,
+ KERNEL_ENABLE_EVENT,
+ KERNEL_START_TRACE,
+ KERNEL_STOP_TRACE,
LTTNG_CREATE_SESSION,
LTTNG_DESTROY_SESSION,
LTTNG_FORCE_SUBBUF_SWITCH,
* lttcomm error code.
*/
enum lttcomm_return_code {
- LTTCOMM_OK = 1000, /* Ok */
- LTTCOMM_ERR, /* Unknown Error */
- LTTCOMM_UND, /* Undefine command */
- 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_NO_SESS, /* No sessions available */
- 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_NR, /* Last element */
+ LTTCOMM_OK = 1000, /* Ok */
+ LTTCOMM_ERR, /* Unknown Error */
+ LTTCOMM_UND, /* Undefine command */
+ 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_NO_SESS, /* No sessions available */
+ 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_SESS_FAIL, /* Kernel create session failed */
+ LTTCOMM_KERN_CHAN_FAIL, /* Kernel create channel 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) */
+ /* MUST be last element */
+ LTTCOMM_NR, /* Last element */
};
/* commands for kconsumerd */
};
/*
- * Data structure for ltt-session received message
+ * Data structure received from lttng client to session daemon.
*/
struct lttcomm_session_msg {
- /* Common data to almost all command */
- enum lttcomm_sessiond_command cmd_type;
- uuid_t session_id;
+ u32 cmd_type; /* enum lttcomm_sessiond_command */
+ uuid_t session_uuid;
char trace_name[NAME_MAX];
char session_name[NAME_MAX];
- pid_t pid;
+ u32 pid; /* pid_t */
union {
struct {
int auto_session;
} create_session;
/* Marker data */
struct {
- char channel[NAME_MAX];
- char marker[NAME_MAX];
- } marker;
- /* SET_SOCK_PATH */
- struct {
- char sock_path[PATH_MAX];
- } sock_path;
- /* SET_SUBBUF_NUM */
- struct {
- unsigned int subbuf_num;
- char channel[NAME_MAX];
- } subbuf_num;
- /* SET_SUBBUF_SIZE */
- struct {
- unsigned int subbuf_size;
- char channel[NAME_MAX];
- } subbuf_size;
+ char event_name[NAME_MAX];
+ } event;
} u;
};
/*
* Data structure for the response from sessiond to the lttng client.
- *
- * This data structure is the control struct use in
- * the header of the transmission. NEVER put variable
- * size data in here.
*/
-struct lttcomm_lttng_header {
- enum lttcomm_sessiond_command cmd_type;
- enum lttcomm_return_code ret_code;
- uuid_t session_id;
- pid_t pid;
- char trace_name[NAME_MAX];
- unsigned int payload_size;
+struct lttcomm_lttng_msg {
+ u32 cmd_type; /* enum lttcomm_sessiond_command */
+ u32 ret_code; /* enum lttcomm_return_code */
+ u32 pid; /* pid_t */
+ u32 trace_name_offset;
+ u32 data_size;
+ uuid_t session_uuid;
+ /* Contains: trace_name + data */
+ char payload[];
};
/*
* how many lttcomm_kconsumerd_msg it is about to receive
*/
struct lttcomm_kconsumerd_header {
- unsigned int payload_size;
- enum lttcomm_consumerd_command cmd_type;
- enum lttcomm_return_code ret_code;
+ u32 payload_size;
+ u32 cmd_type; /* enum lttcomm_consumerd_command */
+ u32 ret_code; /* enum lttcomm_return_code */
};
/* lttcomm_kconsumerd_msg represents a file descriptor to consume the
struct lttcomm_kconsumerd_msg {
char path_name[PATH_MAX];
int fd;
- enum lttcomm_kconsumerd_fd_state state;
+ u32 state; /* enum lttcomm_kconsumerd_fd_state */
+ unsigned long max_sb_size; /* the subbuffer size for this channel */
};
extern int lttcomm_create_unix_sock(const char *pathname);
projects / lttng-tools.git / blobdiff