From: Mathieu Desnoyers Date: Mon, 8 Aug 2011 23:54:04 +0000 (-0400) Subject: Install lttng/lttng-sessiond-comm.h into system X-Git-Tag: v2.0-pre10~7 X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=773168b7255d45fd28f018055292e93b7a76482d;hp=ced2f82009443bb90d8e385e86717c78c249adb7 Install lttng/lttng-sessiond-comm.h into system This header is needed by UST 2.0 for communication with the sessiond. Signed-off-by: Mathieu Desnoyers --- diff --git a/include/Makefile.am b/include/Makefile.am index 1f5dbd95c..4d13e9cbe 100644 --- a/include/Makefile.am +++ b/include/Makefile.am @@ -1,3 +1,3 @@ -lttnginclude_HEADERS = lttng/lttng.h +lttnginclude_HEADERS = lttng/lttng.h lttng/lttng-sessiond-comm.h noinst_HEADERS = lttngerr.h lttng-kernel.h lttng-kconsumerd.h lttng-share.h diff --git a/include/lttng/lttng-sessiond-comm.h b/include/lttng/lttng-sessiond-comm.h new file mode 100644 index 000000000..e361dd8b3 --- /dev/null +++ b/include/lttng/lttng-sessiond-comm.h @@ -0,0 +1,207 @@ +#ifndef _LTTNG_SESSIOND_COMM_H +#define _LTTNG_SESSIOND_COMM_H + +/* + * Copyright (C) 2011 - David Goulet + * Julien Desfossez + * Mathieu Desnoyers + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; only version 2 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/* + * This header is meant for liblttng and libust internal use ONLY. + * These declarations should NOT be considered stable API. + */ + +#include +#include + +/* Default unix socket path */ +#define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK LTTNG_RUNDIR "/client-ltt-sessiond" +#define DEFAULT_GLOBAL_APPS_UNIX_SOCK LTTNG_RUNDIR "/apps-ltt-sessiond" +#define DEFAULT_HOME_APPS_UNIX_SOCK "%s/.apps-ltt-sessiond" +#define DEFAULT_HOME_CLIENT_UNIX_SOCK "%s/.client-ltt-sessiond" + +/* Queue size of listen(2) */ +#define MAX_LISTEN 10 + +/* Get the error code index from 0 since + * LTTCOMM_OK start at 1000 + */ +#define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_OK) + +enum lttcomm_sessiond_command { + /* Tracer command */ + LTTNG_ADD_CONTEXT, + LTTNG_DISABLE_CHANNEL, + LTTNG_DISABLE_EVENT, + LTTNG_DISABLE_ALL_EVENT, + LTTNG_ENABLE_CHANNEL, + LTTNG_ENABLE_EVENT, + LTTNG_ENABLE_ALL_EVENT, + /* Session daemon command */ + LTTNG_CREATE_SESSION, + LTTNG_DESTROY_SESSION, + LTTNG_LIST_CHANNELS, + LTTNG_LIST_DOMAINS, + LTTNG_LIST_EVENTS, + LTTNG_LIST_SESSIONS, + LTTNG_LIST_TRACEPOINTS, + LTTNG_START_TRACE, + LTTNG_STOP_TRACE, + LTTNG_CALIBRATE, +}; + +/* + * lttcomm 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) */ + /* MUST be last element */ + LTTCOMM_NR, /* Last element */ +}; + +/* + * Data structure received from lttng client to session daemon. + */ +struct lttcomm_session_msg { + uint32_t cmd_type; /* enum lttcomm_sessiond_command */ + struct lttng_session session; + struct lttng_domain domain; + union { + struct { + char channel_name[NAME_MAX]; + char name[NAME_MAX]; + } disable; + /* Event data */ + struct { + char channel_name[NAME_MAX]; + struct lttng_event event; + } enable; + /* Create channel */ + struct { + struct lttng_channel chan; + } channel; + /* Context */ + struct { + char channel_name[NAME_MAX]; + char event_name[NAME_MAX]; + struct lttng_event_context ctx; + } context; + /* List */ + struct { + char channel_name[NAME_MAX]; + } list; + struct lttng_calibrate calibrate; + } u; +}; + +/* + * Data structure for the response from sessiond to the lttng client. + */ +struct lttcomm_lttng_msg { + uint32_t cmd_type; /* enum lttcomm_sessiond_command */ + uint32_t ret_code; /* enum lttcomm_return_code */ + uint32_t pid; /* pid_t */ + uint32_t data_size; + /* Contains: trace_name + data */ + char payload[]; +}; + +/* + * Data structures for the kconsumerd communications + * + * The header structure is sent to the kconsumerd daemon to inform + * how many lttcomm_kconsumerd_msg it is about to receive + */ +struct lttcomm_kconsumerd_header { + uint32_t payload_size; + uint32_t cmd_type; /* enum kconsumerd_command */ +}; + +/* lttcomm_kconsumerd_msg represents a file descriptor to consume the + * data and a path name to write it + */ +struct lttcomm_kconsumerd_msg { + char path_name[PATH_MAX]; + int fd; + uint32_t 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); +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 ssize_t lttcomm_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); + +#endif /* _LTTNG_SESSIOND_COMM_H */ diff --git a/liblttkconsumerd/liblttkconsumerd.h b/liblttkconsumerd/liblttkconsumerd.h index 73cd29e27..d085a7950 100644 --- a/liblttkconsumerd/liblttkconsumerd.h +++ b/liblttkconsumerd/liblttkconsumerd.h @@ -19,8 +19,8 @@ #ifndef _LIBLTTKCONSUMERD_H #define _LIBLTTKCONSUMERD_H +#include #include "lttng-kconsumerd.h" -#include "liblttsessiondcomm.h" /* * When the receiving thread dies, we need to have a way to make diff --git a/liblttngctl/liblttngctl.c b/liblttngctl/liblttngctl.c index 2464bce3b..de1821032 100644 --- a/liblttngctl/liblttngctl.c +++ b/liblttngctl/liblttngctl.c @@ -30,7 +30,7 @@ #include -#include "liblttsessiondcomm.h" +#include #include "lttngerr.h" #include "lttng-share.h" diff --git a/liblttsessiondcomm/liblttsessiondcomm.c b/liblttsessiondcomm/liblttsessiondcomm.c index cffeb72c0..296782401 100644 --- a/liblttsessiondcomm/liblttsessiondcomm.c +++ b/liblttsessiondcomm/liblttsessiondcomm.c @@ -28,7 +28,7 @@ #include #include -#include "liblttsessiondcomm.h" +#include /* * Human readable error message. diff --git a/liblttsessiondcomm/liblttsessiondcomm.h b/liblttsessiondcomm/liblttsessiondcomm.h deleted file mode 100644 index a06bb9175..000000000 --- a/liblttsessiondcomm/liblttsessiondcomm.h +++ /dev/null @@ -1,203 +0,0 @@ -/* - * Copyright (C) 2011 - David Goulet - * Julien Desfossez - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; only version 2 - * of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - */ - -#ifndef _LIBLTTSESSIONDCOMM_H -#define _LIBLTTSESSIONDCOMM_H - -#include - -#include -#include "lttng-share.h" - -/* Default unix socket path */ -#define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK LTTNG_RUNDIR "/client-ltt-sessiond" -#define DEFAULT_GLOBAL_APPS_UNIX_SOCK LTTNG_RUNDIR "/apps-ltt-sessiond" -#define DEFAULT_HOME_APPS_UNIX_SOCK "%s/.apps-ltt-sessiond" -#define DEFAULT_HOME_CLIENT_UNIX_SOCK "%s/.client-ltt-sessiond" - -/* Queue size of listen(2) */ -#define MAX_LISTEN 10 - -/* Get the error code index from 0 since - * LTTCOMM_OK start at 1000 - */ -#define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_OK) - -enum lttcomm_sessiond_command { - /* Tracer command */ - LTTNG_ADD_CONTEXT, - LTTNG_DISABLE_CHANNEL, - LTTNG_DISABLE_EVENT, - LTTNG_DISABLE_ALL_EVENT, - LTTNG_ENABLE_CHANNEL, - LTTNG_ENABLE_EVENT, - LTTNG_ENABLE_ALL_EVENT, - /* Session daemon command */ - LTTNG_CREATE_SESSION, - LTTNG_DESTROY_SESSION, - LTTNG_LIST_CHANNELS, - LTTNG_LIST_DOMAINS, - LTTNG_LIST_EVENTS, - LTTNG_LIST_SESSIONS, - LTTNG_LIST_TRACEPOINTS, - LTTNG_START_TRACE, - LTTNG_STOP_TRACE, - LTTNG_CALIBRATE, -}; - -/* - * lttcomm 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) */ - /* MUST be last element */ - LTTCOMM_NR, /* Last element */ -}; - -/* - * Data structure received from lttng client to session daemon. - */ -struct lttcomm_session_msg { - u32 cmd_type; /* enum lttcomm_sessiond_command */ - struct lttng_session session; - struct lttng_domain domain; - union { - struct { - char channel_name[NAME_MAX]; - char name[NAME_MAX]; - } disable; - /* Event data */ - struct { - char channel_name[NAME_MAX]; - struct lttng_event event; - } enable; - /* Create channel */ - struct { - struct lttng_channel chan; - } channel; - /* Context */ - struct { - char channel_name[NAME_MAX]; - char event_name[NAME_MAX]; - struct lttng_event_context ctx; - } context; - /* List */ - struct { - char channel_name[NAME_MAX]; - } list; - struct lttng_calibrate calibrate; - } u; -}; - -/* - * Data structure for the response from sessiond to the lttng client. - */ -struct lttcomm_lttng_msg { - u32 cmd_type; /* enum lttcomm_sessiond_command */ - u32 ret_code; /* enum lttcomm_return_code */ - u32 pid; /* pid_t */ - u32 data_size; - /* Contains: trace_name + data */ - char payload[]; -}; - -/* - * Data structures for the kconsumerd communications - * - * The header structure is sent to the kconsumerd daemon to inform - * how many lttcomm_kconsumerd_msg it is about to receive - */ -struct lttcomm_kconsumerd_header { - u32 payload_size; - u32 cmd_type; /* enum kconsumerd_command */ -}; - -/* lttcomm_kconsumerd_msg represents a file descriptor to consume the - * data and a path name to write it - */ -struct lttcomm_kconsumerd_msg { - char path_name[PATH_MAX]; - int fd; - 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); -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 ssize_t lttcomm_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); - -#endif /* _LIBLTTSESSIONDCOMM_H */ diff --git a/ltt-sessiond/context.h b/ltt-sessiond/context.h index 490fef50e..b107c9c3c 100644 --- a/ltt-sessiond/context.h +++ b/ltt-sessiond/context.h @@ -23,8 +23,8 @@ #include #include +#include -#include "liblttsessiondcomm.h" #include "lttng-kernel.h" #include "kernel-ctl.h" #include "trace.h" diff --git a/ltt-sessiond/main.c b/ltt-sessiond/main.c index 38230dbba..64493521b 100644 --- a/ltt-sessiond/main.c +++ b/ltt-sessiond/main.c @@ -41,9 +41,9 @@ #include /* URCU list library (-lurcu) */ #include +#include #include "context.h" -#include "liblttsessiondcomm.h" #include "ltt-sessiond.h" #include "lttngerr.h" #include "kernel-ctl.h" diff --git a/ltt-sessiond/ust-ctl.c b/ltt-sessiond/ust-ctl.c index 7c8cc5ebb..abee38817 100644 --- a/ltt-sessiond/ust-ctl.c +++ b/ltt-sessiond/ust-ctl.c @@ -23,7 +23,7 @@ #include #include -#include "liblttsessiondcomm.h" +#include #include "lttngerr.h" #include "ust-ctl.h"