[lttngtop.git] / src / iostreamtop.c

/*
 * Copyright (C) 2011-2012 Mathieu Bain <mathieu.bain@polymtl.ca>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License Version 2 as
 * published by the Free Software Foundation;
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <babeltrace/babeltrace.h>

#include "lttngtoptypes.h"
#include "common.h"
#include "iostreamtop.h"

void add_file(struct processtop *proc, struct files *file, int fd)
{
	struct files *tmp_file;
	struct processtop *parent;
	int size;
	int i;

	size = proc->process_files_table->len;
	parent = proc->threadparent;
	if (parent)
		insert_file(parent, fd);
	if (size <= fd) {
		/* Add NULL file structures for undefined FDs */
		for (i = size; i < fd; i++) {
			g_ptr_array_add(proc->process_files_table, NULL);
		}
		g_ptr_array_add(proc->process_files_table, file);
	} else {
		tmp_file = g_ptr_array_index(proc->process_files_table, fd);
		if (tmp_file == NULL)
			g_ptr_array_index(proc->process_files_table, fd) = file;
		else {
			if (strcmp(tmp_file->name, file->name) != 0) {
				size = proc->process_files_table->len;
				g_ptr_array_set_size(proc->process_files_table,
								size+1);
				g_ptr_array_index(proc->process_files_table,
							size) = tmp_file;
				g_ptr_array_index(proc->process_files_table,
							fd) = file;
			} else
				tmp_file->flag = __NR_open;
		}
	}
	/*
	 * The file may have be created in the parent
	 */
	if (file->flag == -1) {
		file->fd = fd;
		file->flag = __NR_open;
		lttngtop.nbfiles++;
		lttngtop.nbnewfiles++;
	}
}

/*
 * Edit the file
 * Called by handled_statedump_filename
 */
void edit_file(struct processtop *proc, struct files *file, int fd)
{
	int size = proc->process_files_table->len;
	struct files *tmpfile;

	if (fd >= size) {
		add_file(proc, file, fd);
	} else {
		tmpfile = g_ptr_array_index(proc->process_files_table, fd);
		if (tmpfile) {
			tmpfile->name = strdup(file->name);
			free(file);
		} else
			add_file(proc, file, fd);
	}
}

void insert_file(struct processtop *proc, int fd)
{
	struct files *tmp;
	struct files *tmp_parent;
	struct processtop *parent;

	if (fd < 0)
		return;
	if (fd >= proc->process_files_table->len) {
		tmp = g_new0(struct files, 1);
		tmp->name = "Unknown";
		tmp->read = 0;
		tmp->write = 0;
		tmp->fd = fd;
		tmp->flag = -1;
		add_file(proc, tmp, fd);
	} else {
		tmp = g_ptr_array_index(proc->process_files_table, fd);
		if (tmp == NULL) {
			tmp = g_new0(struct files, 1);
			tmp->name = "Unknown";
			tmp->read = 0;
			tmp->write = 0;
			tmp->fd = fd;
			tmp->flag = -1;
			add_file(proc, tmp, fd);
		} else {
			parent = proc->threadparent;
			if (parent) {
				tmp_parent = g_ptr_array_index(
					parent->process_files_table, fd);
				if (tmp_parent &&
				   (strcmp(tmp->name, tmp_parent->name)) != 0)
					tmp->name = strdup(tmp_parent->name);
			}
		}
	}
}

void close_file(struct processtop *proc, int fd)
{
	struct files *file;

	file = get_file(proc, fd);
	if (file != NULL) {
		file->flag = __NR_close;
		lttngtop.nbfiles--;
	}
	lttngtop.nbclosedfiles++;
}

struct files *get_file(struct processtop *proc, int fd)
{
	int len;
	struct files *tmp = NULL;

	len = proc->process_files_table->len;

	/*
	 * It is possible that a file was open before taking the trace
	 * and its fd could be greater than all of the others fd
	 * used by the process
	 */
	if (fd < len && fd >= 0)
		tmp = g_ptr_array_index(proc->process_files_table, fd);

	return tmp;
}

void show_table(GPtrArray *tab)
{
	int i;
	struct files *file;

	for (i = 0 ; i < tab->len; i++) {
		file = g_ptr_array_index(tab, i);
		if (file == NULL)
			fprintf(stderr, "NULL, ");
		else
			fprintf(stderr, "%s, ", file->name);
	}
	fprintf(stderr, "]\n\n");
}

void show_history(struct file_history *history)
{
	struct file_history *tmp = history;

	while (tmp != NULL) {
		fprintf(stderr, "fd = %d, name = %s\n", tmp->file->fd,
					tmp->file->name);
		tmp = tmp->next;
	}

}

int update_iostream_ret(struct lttngtop *ctx, int tid, char *comm,
		unsigned long timestamp, uint64_t cpu_id, int ret,
		char *hostname)
{
	struct processtop *tmp;
	struct files *tmpfile;
	int err = 0;

	tmp = get_proc(ctx, tid, comm, timestamp, hostname);

	if (!tmp) {
		err = -1;
		goto end;
	}
	if (tmp->syscall_info != NULL) {
		if (tmp->syscall_info->type == __NR_read
			&& ret > 0) {
			tmp->totalfileread += ret;
			tmp->fileread += ret;
			tmpfile = get_file(tmp, tmp->syscall_info->fd);
			if (tmpfile)
				tmpfile->read += ret;
		} else if (tmp->syscall_info->type == __NR_write
			&& ret > 0) {
			tmp->totalfilewrite += ret;
			tmp->filewrite += ret;
			tmpfile = get_file(tmp, tmp->syscall_info->fd);
			if (tmpfile)
				tmpfile->write += ret;
		} else if (tmp->syscall_info->type == __NR_open
			&& ret > 0) {
			tmpfile = tmp->files_history->file;
			add_file(tmp, tmpfile, ret);
			tmpfile->fd = ret;
		} else {
			err = -1;
		}
		g_free(tmp->syscall_info);
		tmp->syscall_info = NULL;
 	}

end:
	return err;
}

struct syscalls *create_syscall_info(unsigned int type, uint64_t cpu_id,
		unsigned int tid, int fd)
{
	struct syscalls *syscall_info;
	
	syscall_info = g_new0(struct syscalls, 1);
	syscall_info->type = type;
	syscall_info->cpu_id = cpu_id;
	syscall_info->tid = tid;
	syscall_info->fd = fd;

	return syscall_info;
}

struct file_history *create_file(struct file_history *history, char *file_name)
{
	struct files *new_file;
	struct file_history *new_history;

	new_file = g_new0(struct files, 1);
	new_history = g_new0(struct file_history, 1);
	new_file->name = strdup(file_name);
	new_file->read = 0;
	new_file->write = 0;
	new_file->flag = -1;
	new_history->file = new_file;
	new_history->next = history;

	return new_history;
}

enum bt_cb_ret handle_exit_syscall(struct bt_ctf_event *call_data,
		void *private_data)
{
	const struct definition *scope;
	unsigned long timestamp;
	char *comm;
	uint64_t ret, tid;
	uint64_t cpu_id;
	char *hostname;

	timestamp = bt_ctf_get_timestamp(call_data);
	if (timestamp == -1ULL)
		goto error;

	comm = get_context_comm(call_data);
	tid = get_context_tid(call_data);

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	ret = bt_ctf_get_int64(bt_ctf_get_field(call_data,
				scope, "_ret"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing ret context info\n");
		goto error;
	}

	cpu_id = get_cpu_id(call_data);
	hostname = get_context_hostname(call_data);

	/*
	 * if we encounter an exit_syscall and
	 * it is not for a syscall read or write
	 * we just abort the execution of this callback
	 */
	if ((update_iostream_ret(&lttngtop, tid, comm, timestamp, cpu_id,
					ret, hostname)) < 0)
		return BT_CB_ERROR_CONTINUE;

	return BT_CB_OK;

error:
	return BT_CB_ERROR_STOP;
}


enum bt_cb_ret handle_sys_write(struct bt_ctf_event *call_data,
		void *private_data)
{
	const struct definition *scope;
	struct processtop *tmp;
	unsigned long timestamp;
	uint64_t cpu_id;
	int64_t tid;
	char *procname, *hostname;
	int fd;

	timestamp = bt_ctf_get_timestamp(call_data);
	if (timestamp == -1ULL)
		goto error;

	tid = get_context_tid(call_data);
	cpu_id = get_cpu_id(call_data);

	procname = get_context_comm(call_data);
	hostname = get_context_hostname(call_data);

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data,
				scope, "_fd"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing fd context info\n");
		goto error;
	}

	tmp = get_proc(&lttngtop, tid, procname, timestamp, hostname);
	if (!tmp)
		goto end;

	tmp->syscall_info = create_syscall_info(__NR_write, cpu_id, tid, fd);

	insert_file(tmp, fd);

end:
	return BT_CB_OK;

error:
	return BT_CB_ERROR_STOP;
}

enum bt_cb_ret handle_sys_read(struct bt_ctf_event *call_data,
		void *private_data)
{
	struct processtop *tmp;
	const struct definition *scope;
	unsigned long timestamp;
	uint64_t cpu_id;
	int64_t tid;
	char *procname;
	int fd;
	char *hostname;

	timestamp = bt_ctf_get_timestamp(call_data);
	if (timestamp == -1ULL)
		goto error;

	tid = get_context_tid(call_data);
	cpu_id = get_cpu_id(call_data);

	procname = get_context_comm(call_data);
	hostname = get_context_hostname(call_data);

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data,
				scope, "_fd"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing fd context info\n");
		goto error;
	}

	tmp = get_proc(&lttngtop, tid, procname, timestamp, hostname);
	if (!tmp)
		goto end;

	tmp->syscall_info = create_syscall_info(__NR_read, cpu_id, tid, fd);

	insert_file(tmp, fd);

end:
	return BT_CB_OK;

error:
	return BT_CB_ERROR_STOP;
}


enum bt_cb_ret handle_sys_open(struct bt_ctf_event *call_data,
		void *private_data)
{

	struct processtop *tmp;
	const struct definition *scope;
	unsigned long timestamp;
	uint64_t cpu_id;
	int64_t tid;
	char *procname, *hostname;
	char *file;

	timestamp = bt_ctf_get_timestamp(call_data);
	if (timestamp == -1ULL)
		goto error;

	tid = get_context_tid(call_data);
	cpu_id = get_cpu_id(call_data);

	procname = get_context_comm(call_data);
	hostname = get_context_hostname(call_data);

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	file = bt_ctf_get_string(bt_ctf_get_field(call_data,
				scope, "_filename"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing file name context info\n");
		goto error;
	}

	tmp = get_proc(&lttngtop, tid, procname, timestamp, hostname);
	if (!tmp)
		goto end;

	tmp->syscall_info = create_syscall_info(__NR_open, cpu_id, tid, -1);

	tmp->files_history = create_file(tmp->files_history, file);

end:
	return BT_CB_OK;

error:
	return BT_CB_ERROR_STOP;
}


enum bt_cb_ret handle_sys_close(struct bt_ctf_event *call_data,
		void *private_data)
{
	const struct definition *scope;
	struct processtop *tmp;
	unsigned long timestamp;
	int64_t tid;
	char *procname;
	int fd;
	char *hostname;

	timestamp = bt_ctf_get_timestamp(call_data);
	if (timestamp == -1ULL)
		goto error;

	tid = get_context_tid(call_data);

	procname = get_context_comm(call_data);
	hostname = get_context_hostname(call_data);

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data,
				scope, "_fd"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing fd context info\n");
		goto error;
	}

	tmp = get_proc(&lttngtop, tid, procname, timestamp, hostname);
	if (!tmp)
		goto end;

	close_file(tmp, fd);

end:
	return BT_CB_OK;

error:
	return BT_CB_ERROR_STOP;
}

enum bt_cb_ret handle_statedump_file_descriptor(struct bt_ctf_event *call_data,
		void *private_data)
{
	const struct definition *scope;
	struct processtop *parent;
	struct files *file;
	unsigned long timestamp;
	int64_t pid;
	char *file_name, *hostname;
	int fd;

	timestamp = bt_ctf_get_timestamp(call_data);
	if (timestamp == -1ULL)
		goto error;

	scope = bt_ctf_get_top_level_scope(call_data,
			 BT_EVENT_FIELDS);
	pid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
			     scope, "_pid"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing tid context info\n");
		goto error;
	}

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	fd = bt_ctf_get_int64(bt_ctf_get_field(call_data,
				scope, "_fd"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing fd context info\n");
		goto error;
	}

	scope = bt_ctf_get_top_level_scope(call_data,
			BT_EVENT_FIELDS);
	file_name = bt_ctf_get_string(bt_ctf_get_field(call_data,
				scope, "_filename"));
	if (bt_ctf_field_get_error()) {
		fprintf(stderr, "Missing file name context info\n");
		goto error;
	}
	hostname = get_context_hostname(call_data);

	parent = get_proc_pid(&lttngtop, pid, pid, timestamp, hostname);
	if (!parent)
		goto end;

	parent->files_history = create_file(parent->files_history, file_name);
	file = parent->files_history->file;
	edit_file(parent, file, fd);

end:
	return BT_CB_OK;

error:
	return BT_CB_ERROR_STOP;
}
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2011-2012 Mathieu Bain <mathieu.bain@polymtl.ca>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License Version 2 as
	6	* published by the Free Software Foundation;
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along
	14	* with this program; if not, write to the Free Software Foundation, Inc.,
	15	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	16	*/
	17
	18	#include <stdlib.h>
	19	#include <unistd.h>
	20	#include <sys/types.h>
	21	#include <sys/stat.h>
	22	#include <string.h>
	23	#include <babeltrace/babeltrace.h>
	24
	25	#include "lttngtoptypes.h"
	26	#include "common.h"
	27	#include "iostreamtop.h"
	28
	29	void add_file(struct processtop proc, struct files file, int fd)
	30	{
	31	struct files *tmp_file;
	32	struct processtop *parent;
	33	int size;
	34	int i;
	35
	36	size = proc->process_files_table->len;
	37	parent = proc->threadparent;
	38	if (parent)
	39	insert_file(parent, fd);
	40	if (size <= fd) {
	41	/* Add NULL file structures for undefined FDs */
	42	for (i = size; i < fd; i++) {
	43	g_ptr_array_add(proc->process_files_table, NULL);
	44	}
	45	g_ptr_array_add(proc->process_files_table, file);
	46	} else {
	47	tmp_file = g_ptr_array_index(proc->process_files_table, fd);
	48	if (tmp_file == NULL)
	49	g_ptr_array_index(proc->process_files_table, fd) = file;
	50	else {
	51	if (strcmp(tmp_file->name, file->name) != 0) {
	52	size = proc->process_files_table->len;
	53	g_ptr_array_set_size(proc->process_files_table,
	54	size+1);
	55	g_ptr_array_index(proc->process_files_table,
	56	size) = tmp_file;
	57	g_ptr_array_index(proc->process_files_table,
	58	fd) = file;
	59	} else
	60	tmp_file->flag = __NR_open;
	61	}
	62	}
	63	/*
	64	* The file may have be created in the parent
	65	*/
	66	if (file->flag == -1) {
	67	file->fd = fd;
	68	file->flag = __NR_open;
	69	lttngtop.nbfiles++;
	70	lttngtop.nbnewfiles++;
	71	}
	72	}
	73
	74	/*
	75	* Edit the file
	76	* Called by handled_statedump_filename
	77	*/
	78	void edit_file(struct processtop proc, struct files file, int fd)
	79	{
	80	int size = proc->process_files_table->len;
	81	struct files *tmpfile;
	82
	83	if (fd >= size) {
	84	add_file(proc, file, fd);
	85	} else {
	86	tmpfile = g_ptr_array_index(proc->process_files_table, fd);
	87	if (tmpfile) {
	88	tmpfile->name = strdup(file->name);
	89	free(file);
	90	} else
	91	add_file(proc, file, fd);
	92	}
	93	}
	94
	95	void insert_file(struct processtop *proc, int fd)
	96	{
	97	struct files *tmp;
	98	struct files *tmp_parent;
	99	struct processtop *parent;
	100
	101	if (fd < 0)
	102	return;
	103	if (fd >= proc->process_files_table->len) {
	104	tmp = g_new0(struct files, 1);
	105	tmp->name = "Unknown";
	106	tmp->read = 0;
	107	tmp->write = 0;
	108	tmp->fd = fd;
	109	tmp->flag = -1;
	110	add_file(proc, tmp, fd);
	111	} else {
	112	tmp = g_ptr_array_index(proc->process_files_table, fd);
	113	if (tmp == NULL) {
	114	tmp = g_new0(struct files, 1);
	115	tmp->name = "Unknown";
	116	tmp->read = 0;
	117	tmp->write = 0;
	118	tmp->fd = fd;
	119	tmp->flag = -1;
	120	add_file(proc, tmp, fd);
	121	} else {
	122	parent = proc->threadparent;
	123	if (parent) {
	124	tmp_parent = g_ptr_array_index(
	125	parent->process_files_table, fd);
	126	if (tmp_parent &&
	127	(strcmp(tmp->name, tmp_parent->name)) != 0)
	128	tmp->name = strdup(tmp_parent->name);
	129	}
	130	}
	131	}
	132	}
	133
	134	void close_file(struct processtop *proc, int fd)
	135	{
	136	struct files *file;
	137
	138	file = get_file(proc, fd);
	139	if (file != NULL) {
	140	file->flag = __NR_close;
	141	lttngtop.nbfiles--;
	142	}
	143	lttngtop.nbclosedfiles++;
	144	}
	145
	146	struct files get_file(struct processtop proc, int fd)
	147	{
	148	int len;
	149	struct files *tmp = NULL;
	150
	151	len = proc->process_files_table->len;
	152
	153	/*
	154	* It is possible that a file was open before taking the trace
	155	* and its fd could be greater than all of the others fd
	156	* used by the process
	157	*/
	158	if (fd < len && fd >= 0)
	159	tmp = g_ptr_array_index(proc->process_files_table, fd);
	160
	161	return tmp;
	162	}
	163
	164	void show_table(GPtrArray *tab)
	165	{
	166	int i;
	167	struct files *file;
	168
	169	for (i = 0 ; i < tab->len; i++) {
	170	file = g_ptr_array_index(tab, i);
	171	if (file == NULL)
	172	fprintf(stderr, "NULL, ");
	173	else
	174	fprintf(stderr, "%s, ", file->name);
	175	}
	176	fprintf(stderr, "]\n\n");
	177	}
	178
	179	void show_history(struct file_history *history)
	180	{
	181	struct file_history *tmp = history;
	182
	183	while (tmp != NULL) {
	184	fprintf(stderr, "fd = %d, name = %s\n", tmp->file->fd,
	185	tmp->file->name);
	186	tmp = tmp->next;
	187	}
	188
	189	}
	190
	191	int update_iostream_ret(struct lttngtop ctx, int tid, char comm,
	192	unsigned long timestamp, uint64_t cpu_id, int ret,
	193	char *hostname)
	194	{
	195	struct processtop *tmp;
	196	struct files *tmpfile;
	197	int err = 0;
	198
	199	tmp = get_proc(ctx, tid, comm, timestamp, hostname);
	200
	201	if (!tmp) {
	202	err = -1;
	203	goto end;
	204	}
	205	if (tmp->syscall_info != NULL) {
	206	if (tmp->syscall_info->type == __NR_read
	207	&& ret > 0) {
	208	tmp->totalfileread += ret;
	209	tmp->fileread += ret;
	210	tmpfile = get_file(tmp, tmp->syscall_info->fd);
	211	if (tmpfile)
	212	tmpfile->read += ret;
	213	} else if (tmp->syscall_info->type == __NR_write
	214	&& ret > 0) {
	215	tmp->totalfilewrite += ret;
	216	tmp->filewrite += ret;
	217	tmpfile = get_file(tmp, tmp->syscall_info->fd);
	218	if (tmpfile)
	219	tmpfile->write += ret;
	220	} else if (tmp->syscall_info->type == __NR_open
	221	&& ret > 0) {
	222	tmpfile = tmp->files_history->file;
	223	add_file(tmp, tmpfile, ret);
	224	tmpfile->fd = ret;
	225	} else {
	226	err = -1;
	227	}
	228	g_free(tmp->syscall_info);
	229	tmp->syscall_info = NULL;
	230	}
	231
	232	end:
	233	return err;
	234	}
	235
	236	struct syscalls *create_syscall_info(unsigned int type, uint64_t cpu_id,
	237	unsigned int tid, int fd)
	238	{
	239	struct syscalls *syscall_info;
	240
	241	syscall_info = g_new0(struct syscalls, 1);
	242	syscall_info->type = type;
	243	syscall_info->cpu_id = cpu_id;
	244	syscall_info->tid = tid;
	245	syscall_info->fd = fd;
	246
	247	return syscall_info;
	248	}
	249
	250	struct file_history create_file(struct file_history history, char *file_name)
	251	{
	252	struct files *new_file;
	253	struct file_history *new_history;
	254
	255	new_file = g_new0(struct files, 1);
	256	new_history = g_new0(struct file_history, 1);
	257	new_file->name = strdup(file_name);
	258	new_file->read = 0;
	259	new_file->write = 0;
	260	new_file->flag = -1;
	261	new_history->file = new_file;
	262	new_history->next = history;
	263
	264	return new_history;
	265	}
	266
	267	enum bt_cb_ret handle_exit_syscall(struct bt_ctf_event *call_data,
	268	void *private_data)
	269	{
	270	const struct definition *scope;
	271	unsigned long timestamp;
	272	char *comm;
	273	uint64_t ret, tid;
	274	uint64_t cpu_id;
	275	char *hostname;
	276
	277	timestamp = bt_ctf_get_timestamp(call_data);
	278	if (timestamp == -1ULL)
	279	goto error;
	280
	281	comm = get_context_comm(call_data);
	282	tid = get_context_tid(call_data);
	283
	284	scope = bt_ctf_get_top_level_scope(call_data,
	285	BT_EVENT_FIELDS);
	286	ret = bt_ctf_get_int64(bt_ctf_get_field(call_data,
	287	scope, "_ret"));
	288	if (bt_ctf_field_get_error()) {
	289	fprintf(stderr, "Missing ret context info\n");
	290	goto error;
	291	}
	292
	293	cpu_id = get_cpu_id(call_data);
	294	hostname = get_context_hostname(call_data);
	295
	296	/*
	297	* if we encounter an exit_syscall and
	298	* it is not for a syscall read or write
	299	* we just abort the execution of this callback
	300	*/
	301	if ((update_iostream_ret(&lttngtop, tid, comm, timestamp, cpu_id,
	302	ret, hostname)) < 0)
	303	return BT_CB_ERROR_CONTINUE;
	304
	305	return BT_CB_OK;
	306
	307	error:
	308	return BT_CB_ERROR_STOP;
	309	}
	310
	311
	312	enum bt_cb_ret handle_sys_write(struct bt_ctf_event *call_data,
	313	void *private_data)
	314	{
	315	const struct definition *scope;
	316	struct processtop *tmp;
	317	unsigned long timestamp;
	318	uint64_t cpu_id;
	319	int64_t tid;
	320	char procname, hostname;
	321	int fd;
	322
	323	timestamp = bt_ctf_get_timestamp(call_data);
	324	if (timestamp == -1ULL)
	325	goto error;
	326
	327	tid = get_context_tid(call_data);
	328	cpu_id = get_cpu_id(call_data);
	329
	330	procname = get_context_comm(call_data);
	331	hostname = get_context_hostname(call_data);
	332
	333	scope = bt_ctf_get_top_level_scope(call_data,
	334	BT_EVENT_FIELDS);
	335	fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data,
	336	scope, "_fd"));
	337	if (bt_ctf_field_get_error()) {
	338	fprintf(stderr, "Missing fd context info\n");
	339	goto error;
	340	}
	341
	342	tmp = get_proc(&lttngtop, tid, procname, timestamp, hostname);
	343	if (!tmp)
	344	goto end;
	345
	346	tmp->syscall_info = create_syscall_info(__NR_write, cpu_id, tid, fd);
	347
	348	insert_file(tmp, fd);
	349
	350	end:
	351	return BT_CB_OK;
	352
	353	error:
	354	return BT_CB_ERROR_STOP;
	355	}
	356
	357	enum bt_cb_ret handle_sys_read(struct bt_ctf_event *call_data,
	358	void *private_data)
	359	{
	360	struct processtop *tmp;
	361	const struct definition *scope;
	362	unsigned long timestamp;
	363	uint64_t cpu_id;
	364	int64_t tid;
	365	char *procname;
	366	int fd;
	367	char *hostname;
	368
	369	timestamp = bt_ctf_get_timestamp(call_data);
	370	if (timestamp == -1ULL)
	371	goto error;
	372
	373	tid = get_context_tid(call_data);
	374	cpu_id = get_cpu_id(call_data);
	375
	376	procname = get_context_comm(call_data);
	377	hostname = get_context_hostname(call_data);
	378
	379	scope = bt_ctf_get_top_level_scope(call_data,
	380	BT_EVENT_FIELDS);
	381	fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data,
	382	scope, "_fd"));
	383	if (bt_ctf_field_get_error()) {
	384	fprintf(stderr, "Missing fd context info\n");
	385	goto error;
	386	}
	387
	388	tmp = get_proc(&lttngtop, tid, procname, timestamp, hostname);
	389	if (!tmp)
	390	goto end;
	391
	392	tmp->syscall_info = create_syscall_info(__NR_read, cpu_id, tid, fd);
	393
	394	insert_file(tmp, fd);
	395
	396	end:
	397	return BT_CB_OK;
	398
	399	error:
	400	return BT_CB_ERROR_STOP;
	401	}
	402
	403
	404	enum bt_cb_ret handle_sys_open(struct bt_ctf_event *call_data,
	405	void *private_data)
	406	{
	407
	408	struct processtop *tmp;
	409	const struct definition *scope;
	410	unsigned long timestamp;
	411	uint64_t cpu_id;
	412	int64_t tid;
	413	char procname, hostname;
	414	char *file;
	415
	416	timestamp = bt_ctf_get_timestamp(call_data);
	417	if (timestamp == -1ULL)
	418	goto error;
	419
	420	tid = get_context_tid(call_data);
	421	cpu_id = get_cpu_id(call_data);
	422
	423	procname = get_context_comm(call_data);
	424	hostname = get_context_hostname(call_data);
	425
	426	scope = bt_ctf_get_top_level_scope(call_data,
	427	BT_EVENT_FIELDS);
	428	file = bt_ctf_get_string(bt_ctf_get_field(call_data,
	429	scope, "_filename"));
	430	if (bt_ctf_field_get_error()) {
	431	fprintf(stderr, "Missing file name context info\n");
	432	goto error;
	433	}
	434
	435	tmp = get_proc(&lttngtop, tid, procname, timestamp, hostname);
	436	if (!tmp)
	437	goto end;
	438
	439	tmp->syscall_info = create_syscall_info(__NR_open, cpu_id, tid, -1);
	440
	441	tmp->files_history = create_file(tmp->files_history, file);
	442
	443	end:
	444	return BT_CB_OK;
	445
	446	error:
	447	return BT_CB_ERROR_STOP;
	448	}
	449
	450
	451	enum bt_cb_ret handle_sys_close(struct bt_ctf_event *call_data,
	452	void *private_data)
	453	{
	454	const struct definition *scope;
	455	struct processtop *tmp;
	456	unsigned long timestamp;
	457	int64_t tid;
	458	char *procname;
	459	int fd;
	460	char *hostname;
	461
	462	timestamp = bt_ctf_get_timestamp(call_data);
	463	if (timestamp == -1ULL)
	464	goto error;
	465
	466	tid = get_context_tid(call_data);
	467
	468	procname = get_context_comm(call_data);
	469	hostname = get_context_hostname(call_data);
	470
	471	scope = bt_ctf_get_top_level_scope(call_data,
	472	BT_EVENT_FIELDS);
	473	fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data,
	474	scope, "_fd"));
	475	if (bt_ctf_field_get_error()) {
	476	fprintf(stderr, "Missing fd context info\n");
	477	goto error;
	478	}
	479
	480	tmp = get_proc(&lttngtop, tid, procname, timestamp, hostname);
	481	if (!tmp)
	482	goto end;
	483
	484	close_file(tmp, fd);
	485
	486	end:
	487	return BT_CB_OK;
	488
	489	error:
	490	return BT_CB_ERROR_STOP;
	491	}
	492
	493	enum bt_cb_ret handle_statedump_file_descriptor(struct bt_ctf_event *call_data,
	494	void *private_data)
	495	{
	496	const struct definition *scope;
	497	struct processtop *parent;
	498	struct files *file;
	499	unsigned long timestamp;
	500	int64_t pid;
	501	char file_name, hostname;
	502	int fd;
	503
	504	timestamp = bt_ctf_get_timestamp(call_data);
	505	if (timestamp == -1ULL)
	506	goto error;
	507
	508	scope = bt_ctf_get_top_level_scope(call_data,
	509	BT_EVENT_FIELDS);
	510	pid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
	511	scope, "_pid"));
	512	if (bt_ctf_field_get_error()) {
	513	fprintf(stderr, "Missing tid context info\n");
	514	goto error;
	515	}
	516
	517	scope = bt_ctf_get_top_level_scope(call_data,
	518	BT_EVENT_FIELDS);
	519	fd = bt_ctf_get_int64(bt_ctf_get_field(call_data,
	520	scope, "_fd"));
	521	if (bt_ctf_field_get_error()) {
	522	fprintf(stderr, "Missing fd context info\n");
	523	goto error;
	524	}
	525
	526	scope = bt_ctf_get_top_level_scope(call_data,
	527	BT_EVENT_FIELDS);
	528	file_name = bt_ctf_get_string(bt_ctf_get_field(call_data,
	529	scope, "_filename"));
	530	if (bt_ctf_field_get_error()) {
	531	fprintf(stderr, "Missing file name context info\n");
	532	goto error;
	533	}
	534	hostname = get_context_hostname(call_data);
	535
	536	parent = get_proc_pid(&lttngtop, pid, pid, timestamp, hostname);
	537	if (!parent)
	538	goto end;
	539
	540	parent->files_history = create_file(parent->files_history, file_name);
	541	file = parent->files_history->file;
	542	edit_file(parent, file, fd);
	543
	544	end:
	545	return BT_CB_OK;
	546
	547	error:
	548	return BT_CB_ERROR_STOP;
	549	}