Handle splice errors

[lttng-tools.git] / liblttsessiondcomm / liblttsessiondcomm.h

diff --git a/liblttsessiondcomm/liblttsessiondcomm.h b/liblttsessiondcomm/liblttsessiondcomm.h
index abcca250930bd766c19a581f9ac8dfd000a3d2c2..580d4c2c75381fbe30220d7d2111be7d6c753057 100644 (file)
--- a/liblttsessiondcomm/liblttsessiondcomm.h
+++ b/liblttsessiondcomm/liblttsessiondcomm.h
@@ -82,34 +82,42 @@ enum lttcomm_sessiond_command {
  * 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_NO_EVENT,               /* No event found */
-       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_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 */
@@ -143,14 +151,6 @@ struct lttcomm_session_msg {
                struct {
                        char event_name[NAME_MAX];
                } event;
-               /* Create channel kernel */
-               struct {
-                       int overwrite;
-                       u64 subbuf_size;
-                       u64 num_subbuf;
-                       unsigned int switch_timer_interval;
-                       unsigned int read_timer_interval;
-               } create_channel;
        } u;
 };