[ltt-control.git] / ltt-control / liblttctl / lttctl.h

/* libltt header file
 *
 * Copyright 2005-
 *     Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
 *
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 *
 * Inspired from iptables, by James Morris <jmorris@intercode.com.au>.
 * 
 */

#ifndef _LIBLTT_H
#define _LIBLTT_H

#include <linux/limits.h>
#include <asm/types.h>
#include <sys/socket.h>
#include <linux/netlink.h>

#ifndef NETLINK_LTT
#define NETLINK_LTT 31
#endif


enum trace_op {
	OP_CREATE,
	OP_DESTROY,
	OP_START,
	OP_STOP,
	OP_NONE
};

enum trace_mode {
	LTT_TRACE_NORMAL,
	LTT_TRACE_FLIGHT
};

typedef struct lttctl_peer_msg {
	char trace_name[NAME_MAX];
	enum trace_op op;
	union {
    struct {
      enum trace_mode mode;
      unsigned subbuf_size;
      unsigned n_subbufs;
    } new_trace;
	} args;
} lttctl_peer_msg_t;


struct lttctl_handle
{
  int fd;
  //u_int8_t blocking;
  struct sockaddr_nl local;
  struct sockaddr_nl peer;
};

typedef struct lttctl_resp_msg {
	int err;
} lttctl_resp_msg_t;

struct lttctl_handle *lttctl_create_handle(void);

int lttctl_destroy_handle(struct lttctl_handle *h);


int lttctl_create_trace(const struct lttctl_handle *h,
		char *name, enum trace_mode mode, unsigned subbuf_size, unsigned n_subbufs);

int lttctl_destroy_trace(const struct lttctl_handle *handle, char *name);

int lttctl_start(const struct lttctl_handle *handle, char *name);

int lttctl_stop(const struct lttctl_handle *handle, char *name);

#define LTTCTLM_BASE	0x10
#define LTTCTLM_CONTROL	(LTTCTLM_BASE + 1)	/* LTT control message */


#endif //_LIBLTT_H
Commit	Line	Data
2727692a	1	/* libltt header file
	2	*
	3	* Copyright 2005-
	4	* Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
	5	*
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	*
	18	* Inspired from iptables, by James Morris <jmorris@intercode.com.au>.
	19	*
	20	*/
	21
	22	#ifndef _LIBLTT_H
	23	#define _LIBLTT_H
	24
	25	#include <linux/limits.h>
	26	#include <asm/types.h>
	27	#include <sys/socket.h>
	28	#include <linux/netlink.h>
	29
	30	#ifndef NETLINK_LTT
	31	#define NETLINK_LTT 31
	32	#endif
	33
	34
	35	enum trace_op {
	36	OP_CREATE,
	37	OP_DESTROY,
	38	OP_START,
	39	OP_STOP,
	40	OP_NONE
	41	};
	42
	43	enum trace_mode {
	44	LTT_TRACE_NORMAL,
	45	LTT_TRACE_FLIGHT
	46	};
	47
	48	typedef struct lttctl_peer_msg {
	49	char trace_name[NAME_MAX];
	50	enum trace_op op;
	51	union {
	52	struct {
	53	enum trace_mode mode;
	54	unsigned subbuf_size;
	55	unsigned n_subbufs;
	56	} new_trace;
	57	} args;
	58	} lttctl_peer_msg_t;
	59
	60
	61	struct lttctl_handle
	62	{
	63	int fd;
	64	//u_int8_t blocking;
65	struct sockaddr_nl local;
66	struct sockaddr_nl peer;
67	};
68
69	typedef struct lttctl_resp_msg {
70	int err;
71	} lttctl_resp_msg_t;
72
73	struct lttctl_handle *lttctl_create_handle(void);
74
75	int lttctl_destroy_handle(struct lttctl_handle *h);
76
77
78	int lttctl_create_trace(const struct lttctl_handle *h,
79	char *name, enum trace_mode mode, unsigned subbuf_size, unsigned n_subbufs);
80
81	int lttctl_destroy_trace(const struct lttctl_handle handle, char name);
82
83	int lttctl_start(const struct lttctl_handle handle, char name);
84
85	int lttctl_stop(const struct lttctl_handle handle, char name);
86
87	#define LTTCTLM_BASE 0x10
88	#define LTTCTLM_CONTROL (LTTCTLM_BASE + 1) /* LTT control message */
89
90
91	#endif //_LIBLTT_H