[babeltrace.git] / converter / babeltrace-log.c

/*
 * babeltrace-log.c
 *
 * BabelTrace - Convert Text Log to CTF
 *
 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
 *
 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * Depends on glibc 2.10 for getline().
 */

#define _GNU_SOURCE
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <inttypes.h>

#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/ctf/types.h>
#include <babeltrace/uuid.h>
#include <babeltrace/endian.h>

#define USEC_PER_SEC 1000000UL

int babeltrace_debug, babeltrace_verbose;

static char *s_outputname;
static int s_timestamp;
static int s_help;
static unsigned char s_uuid[BABELTRACE_UUID_LEN];

/* Metadata format string */
static const char metadata_fmt[] =
"/* CTF 1.8 */\n"
"typealias integer { size = 8; align = 8; signed = false; } := uint8_t;\n"
"typealias integer { size = 32; align = 32; signed = false; } := uint32_t;\n"
"typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
"\n"
"trace {\n"
"	major = %u;\n"			/* major (e.g. 0) */
"	minor = %u;\n"			/* minor (e.g. 1) */
"	uuid = \"%s\";\n"		/* UUID */
"	byte_order = %s;\n"		/* be or le */
"	packet.header := struct {\n"
"		uint32_t magic;\n"
"		uint8_t  uuid[16];\n"
"	};\n"
"};\n"
"\n"
"stream {\n"
"	packet.context := struct {\n"
"		uint64_t content_size;\n"
"		uint64_t packet_size;\n"
"	};\n"
"%s"					/* Stream event header (opt.) */
"};\n"
"\n"
"event {\n"
"	name = string;\n"
"	fields := struct { string str; };\n"
"};\n";

static const char metadata_stream_event_header_timestamp[] =
"	typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
"	event.header := struct {\n"
"		uint64_t timestamp;\n"
"	};\n";

static
void print_metadata(FILE *fp)
{
	char uuid_str[BABELTRACE_UUID_STR_LEN];
	unsigned int major = 0, minor = 0;
	int ret;

	ret = sscanf(VERSION, "%u.%u", &major, &minor);
	if (ret != 2)
		fprintf(stderr, "[warning] Incorrect babeltrace version format\n.");
	babeltrace_uuid_unparse(s_uuid, uuid_str);
	fprintf(fp, metadata_fmt,
		major,
		minor,
		uuid_str,
		BYTE_ORDER == LITTLE_ENDIAN ? "le" : "be",
		s_timestamp ? metadata_stream_event_header_timestamp : "");
}

static
void write_packet_header(struct ctf_stream_pos *pos, unsigned char *uuid)
{
	struct ctf_stream_pos dummy;

	/* magic */
	ctf_dummy_pos(pos, &dummy);
	ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	assert(!ctf_pos_packet(&dummy));
	
	ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	*(uint32_t *) ctf_get_pos_addr(pos) = 0xC1FC1FC1;
	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);

	/* uuid */
	ctf_dummy_pos(pos, &dummy);
	ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
	ctf_move_pos(&dummy, 16 * CHAR_BIT);
	assert(!ctf_pos_packet(&dummy));

	ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
	memcpy(ctf_get_pos_addr(pos), uuid, BABELTRACE_UUID_LEN);
	ctf_move_pos(pos, BABELTRACE_UUID_LEN * CHAR_BIT);
}

static
void write_packet_context(struct ctf_stream_pos *pos)
{
	struct ctf_stream_pos dummy;

	/* content_size */
	ctf_dummy_pos(pos, &dummy);
	ctf_align_pos(&dummy, sizeof(uint64_t) * CHAR_BIT);
	ctf_move_pos(&dummy, sizeof(uint64_t) * CHAR_BIT);
	assert(!ctf_pos_packet(&dummy));
	
	ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	*(uint64_t *) ctf_get_pos_addr(pos) = ~0ULL;	/* Not known yet */
	pos->content_size_loc = (uint64_t *) ctf_get_pos_addr(pos);
	ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);

	/* packet_size */
	ctf_dummy_pos(pos, &dummy);
	ctf_align_pos(&dummy, sizeof(uint64_t) * CHAR_BIT);
	ctf_move_pos(&dummy, sizeof(uint64_t) * CHAR_BIT);
	assert(!ctf_pos_packet(&dummy));
	
	ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	*(uint64_t *) ctf_get_pos_addr(pos) = pos->packet_size;
	ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);
}

static
void write_event_header(struct ctf_stream_pos *pos, char *line,
			char **tline, size_t len, size_t *tlen,
			uint64_t *ts)
{
	unsigned long sec, usec;
	int ret;

	if (!s_timestamp)
		return;

	/* Only need to be executed on first pass (dummy) */
	if (pos->dummy) {
		/* Extract time from input line */
		ret = sscanf(line, "[%lu.%lu] ", &sec, &usec);
		if (ret == 2) {
			*tline = strchr(line, ']');
			assert(*tline);
			(*tline)++;
			if ((*tline)[0] == ' ') {
				(*tline)++;
			}
			*tlen = len + line - *tline;
			*ts = (uint64_t) sec * USEC_PER_SEC + (uint64_t) usec;
		}
	}
	/* timestamp */
	ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	if (!pos->dummy)
		*(uint64_t *) ctf_get_pos_addr(pos) = *ts;
	ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);
}

static
void trace_string(char *line, struct ctf_stream_pos *pos, size_t len)
{
	struct ctf_stream_pos dummy;
	int attempt = 0;
	char *tline = line;	/* tline is start of text, after timestamp */
	size_t tlen = len;
	uint64_t ts = 0;

	printf_debug("read: %s\n", line);
retry:
	ctf_dummy_pos(pos, &dummy);
	write_event_header(&dummy, line, &tline, len, &tlen, &ts);
	ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
	ctf_move_pos(&dummy, tlen * CHAR_BIT);
	if (ctf_pos_packet(&dummy)) {
		ctf_pos_pad_packet(pos);
		write_packet_header(pos, s_uuid);
		write_packet_context(pos);
		if (attempt++ == 1) {
			fprintf(stderr, "[Error] Line too large for packet size (%" PRIu64 "kB) (discarded)\n",
				pos->packet_size / CHAR_BIT / 1024);
			return;
		}
		goto retry;
	}

	write_event_header(pos, line, &tline, len, &tlen, &ts);
	ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
	memcpy(ctf_get_pos_addr(pos), tline, tlen);
	ctf_move_pos(pos, tlen * CHAR_BIT);
}

static
void trace_text(FILE *input, int output)
{
	struct ctf_stream_pos pos;
	ssize_t len;
	char *line = NULL, *nl;
	size_t linesize;

	memset(&pos, 0, sizeof(pos));
	ctf_init_pos(&pos, output, O_RDWR);

	write_packet_header(&pos, s_uuid);
	write_packet_context(&pos);
	for (;;) {
		len = getline(&line, &linesize, input);
		if (len < 0)
			break;
		nl = strrchr(line, '\n');
		if (nl) {
			*nl = '\0';
			trace_string(line, &pos, nl - line + 1);
		} else {
			trace_string(line, &pos, strlen(line) + 1);
		}
	}
	ctf_fini_pos(&pos);
}

static
void usage(FILE *fp)
{
	fprintf(fp, "BabelTrace Log Converter %s\n", VERSION);
	fprintf(fp, "\n");
	fprintf(fp, "Convert for a text log (read from standard input) to CTF.\n");
	fprintf(fp, "\n");
	fprintf(fp, "usage : babeltrace-log [OPTIONS] OUTPUT\n");
	fprintf(fp, "\n");
	fprintf(fp, "  OUTPUT                         Output trace path\n");
	fprintf(fp, "\n");
	fprintf(fp, "  -t                             With timestamps (format: [sec.usec] string\\n)\n");
	fprintf(fp, "\n");
}

static
int parse_args(int argc, char **argv)
{
	int i;

	for (i = 1; i < argc; i++) {
		if (!strcmp(argv[i], "-t"))
			s_timestamp = 1;
		else if (!strcmp(argv[i], "-h")) {
			s_help = 1;
			return 0;
		} else if (argv[i][0] == '-')
			return -EINVAL;
		else
			s_outputname = argv[i];
	}
	if (!s_outputname)
		return -EINVAL;
	return 0;
}

int main(int argc, char **argv)
{
	int fd, metadata_fd, ret;
	DIR *dir;
	int dir_fd;
	FILE *metadata_fp;

	ret = parse_args(argc, argv);
	if (ret) {
		fprintf(stderr, "Error: invalid argument.\n");
		usage(stderr);
		goto error;
	}

	if (s_help) {
		usage(stdout);
		exit(EXIT_SUCCESS);
	}

	ret = mkdir(s_outputname, S_IRWXU|S_IRWXG);
	if (ret) {
		perror("mkdir");
		goto error;
	}

	dir = opendir(s_outputname);
	if (!dir) {
		perror("opendir");
		goto error_rmdir;
	}
	dir_fd = dirfd(dir);
	if (dir_fd < 0) {
		perror("dirfd");
		goto error_closedir;
	}

	fd = openat(dir_fd, "datastream", O_RDWR|O_CREAT,
		    S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
	if (fd < 0) {
		perror("openat");
		goto error_closedirfd;
	}

	metadata_fd = openat(dir_fd, "metadata", O_RDWR|O_CREAT,
			     S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
	if (fd < 0) {
		perror("openat");
		goto error_closedatastream;
	}
	metadata_fp = fdopen(metadata_fd, "w");
	if (!metadata_fp) {
		perror("fdopen");
		goto error_closemetadatafd;
	}

	babeltrace_uuid_generate(s_uuid);
	print_metadata(metadata_fp);
	trace_text(stdin, fd);

	close(fd);
	exit(EXIT_SUCCESS);

	/* error handling */
error_closemetadatafd:
	ret = close(metadata_fd);
	if (ret)
		perror("close");
error_closedatastream:
	ret = close(fd);
	if (ret)
		perror("close");
error_closedirfd:
	ret = close(dir_fd);
	if (ret)
		perror("close");
error_closedir:
	ret = closedir(dir);
	if (ret)
		perror("closedir");
error_rmdir:
	ret = rmdir(s_outputname);
	if (ret)
		perror("rmdir");
error:
	exit(EXIT_FAILURE);
}
Commit	Line	Data
	1	/*
	2	* babeltrace-log.c
	3	*
	4	* BabelTrace - Convert Text Log to CTF
	5	*
	6	* Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
	7	*
	8	* Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	9	*
	10	* Permission is hereby granted, free of charge, to any person obtaining a copy
	11	* of this software and associated documentation files (the "Software"), to deal
	12	* in the Software without restriction, including without limitation the rights
	13	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	14	* copies of the Software, and to permit persons to whom the Software is
	15	* furnished to do so, subject to the following conditions:
	16	*
	17	* The above copyright notice and this permission notice shall be included in
	18	* all copies or substantial portions of the Software.
	19	*
	20	* Depends on glibc 2.10 for getline().
	21	*/
	22
	23	#define _GNU_SOURCE
	24	#include <config.h>
	25	#include <sys/types.h>
	26	#include <sys/stat.h>
	27	#include <fcntl.h>
	28	#include <sys/mman.h>
	29	#include <dirent.h>
	30	#include <stdio.h>
	31	#include <stdlib.h>
	32	#include <stdint.h>
	33	#include <unistd.h>
	34	#include <errno.h>
	35	#include <string.h>
	36	#include <inttypes.h>
	37
	38	#include <babeltrace/babeltrace-internal.h>
	39	#include <babeltrace/ctf/types.h>
	40	#include <babeltrace/uuid.h>
	41	#include <babeltrace/endian.h>
	42
	43	#define USEC_PER_SEC 1000000UL
	44
	45	int babeltrace_debug, babeltrace_verbose;
	46
	47	static char *s_outputname;
	48	static int s_timestamp;
	49	static int s_help;
	50	static unsigned char s_uuid[BABELTRACE_UUID_LEN];
	51
	52	/* Metadata format string */
	53	static const char metadata_fmt[] =
	54	"/* CTF 1.8 */\n"
	55	"typealias integer { size = 8; align = 8; signed = false; } := uint8_t;\n"
	56	"typealias integer { size = 32; align = 32; signed = false; } := uint32_t;\n"
	57	"typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
	58	"\n"
	59	"trace {\n"
	60	" major = %u;\n" /* major (e.g. 0) */
	61	" minor = %u;\n" /* minor (e.g. 1) */
	62	" uuid = \"%s\";\n" /* UUID */
	63	" byte_order = %s;\n" /* be or le */
	64	" packet.header := struct {\n"
	65	" uint32_t magic;\n"
	66	" uint8_t uuid[16];\n"
	67	" };\n"
	68	"};\n"
	69	"\n"
	70	"stream {\n"
	71	" packet.context := struct {\n"
	72	" uint64_t content_size;\n"
	73	" uint64_t packet_size;\n"
	74	" };\n"
	75	"%s" /* Stream event header (opt.) */
	76	"};\n"
	77	"\n"
	78	"event {\n"
	79	" name = string;\n"
	80	" fields := struct { string str; };\n"
	81	"};\n";
	82
	83	static const char metadata_stream_event_header_timestamp[] =
	84	" typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
	85	" event.header := struct {\n"
	86	" uint64_t timestamp;\n"
	87	" };\n";
	88
	89	static
	90	void print_metadata(FILE *fp)
	91	{
	92	char uuid_str[BABELTRACE_UUID_STR_LEN];
	93	unsigned int major = 0, minor = 0;
	94	int ret;
	95
	96	ret = sscanf(VERSION, "%u.%u", &major, &minor);
	97	if (ret != 2)
	98	fprintf(stderr, "[warning] Incorrect babeltrace version format\n.");
	99	babeltrace_uuid_unparse(s_uuid, uuid_str);
	100	fprintf(fp, metadata_fmt,
	101	major,
	102	minor,
	103	uuid_str,
	104	BYTE_ORDER == LITTLE_ENDIAN ? "le" : "be",
	105	s_timestamp ? metadata_stream_event_header_timestamp : "");
	106	}
	107
	108	static
	109	void write_packet_header(struct ctf_stream_pos pos, unsigned char uuid)
	110	{
	111	struct ctf_stream_pos dummy;
	112
	113	/* magic */
	114	ctf_dummy_pos(pos, &dummy);
	115	ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	116	ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	117	assert(!ctf_pos_packet(&dummy));
	118
	119	ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	120	(uint32_t ) ctf_get_pos_addr(pos) = 0xC1FC1FC1;
	121	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	122
	123	/* uuid */
	124	ctf_dummy_pos(pos, &dummy);
	125	ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
	126	ctf_move_pos(&dummy, 16 * CHAR_BIT);
	127	assert(!ctf_pos_packet(&dummy));
	128
	129	ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
	130	memcpy(ctf_get_pos_addr(pos), uuid, BABELTRACE_UUID_LEN);
	131	ctf_move_pos(pos, BABELTRACE_UUID_LEN * CHAR_BIT);
	132	}
	133
	134	static
	135	void write_packet_context(struct ctf_stream_pos *pos)
	136	{
	137	struct ctf_stream_pos dummy;
	138
	139	/* content_size */
	140	ctf_dummy_pos(pos, &dummy);
	141	ctf_align_pos(&dummy, sizeof(uint64_t) * CHAR_BIT);
	142	ctf_move_pos(&dummy, sizeof(uint64_t) * CHAR_BIT);
	143	assert(!ctf_pos_packet(&dummy));
	144
	145	ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	146	(uint64_t ) ctf_get_pos_addr(pos) = ~0ULL; /* Not known yet */
	147	pos->content_size_loc = (uint64_t *) ctf_get_pos_addr(pos);
	148	ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	149
	150	/* packet_size */
	151	ctf_dummy_pos(pos, &dummy);
	152	ctf_align_pos(&dummy, sizeof(uint64_t) * CHAR_BIT);
	153	ctf_move_pos(&dummy, sizeof(uint64_t) * CHAR_BIT);
	154	assert(!ctf_pos_packet(&dummy));
	155
	156	ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	157	(uint64_t ) ctf_get_pos_addr(pos) = pos->packet_size;
	158	ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	159	}
	160
	161	static
	162	void write_event_header(struct ctf_stream_pos pos, char line,
	163	char *tline, size_t len, size_t tlen,
	164	uint64_t *ts)
	165	{
	166	unsigned long sec, usec;
	167	int ret;
	168
	169	if (!s_timestamp)
	170	return;
	171
	172	/* Only need to be executed on first pass (dummy) */
	173	if (pos->dummy) {
	174	/* Extract time from input line */
	175	ret = sscanf(line, "[%lu.%lu] ", &sec, &usec);
	176	if (ret == 2) {
	177	*tline = strchr(line, ']');
	178	assert(*tline);
	179	(*tline)++;
	180	if ((*tline)[0] == ' ') {
	181	(*tline)++;
	182	}
	183	tlen = len + line - tline;
	184	ts = (uint64_t) sec USEC_PER_SEC + (uint64_t) usec;
	185	}
	186	}
	187	/* timestamp */
	188	ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	189	if (!pos->dummy)
	190	(uint64_t ) ctf_get_pos_addr(pos) = *ts;
	191	ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	192	}
	193
	194	static
	195	void trace_string(char line, struct ctf_stream_pos pos, size_t len)
	196	{
	197	struct ctf_stream_pos dummy;
	198	int attempt = 0;
	199	char tline = line; / tline is start of text, after timestamp */
	200	size_t tlen = len;
	201	uint64_t ts = 0;
	202
	203	printf_debug("read: %s\n", line);
	204	retry:
	205	ctf_dummy_pos(pos, &dummy);
	206	write_event_header(&dummy, line, &tline, len, &tlen, &ts);
	207	ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
	208	ctf_move_pos(&dummy, tlen * CHAR_BIT);
	209	if (ctf_pos_packet(&dummy)) {
	210	ctf_pos_pad_packet(pos);
	211	write_packet_header(pos, s_uuid);
	212	write_packet_context(pos);
	213	if (attempt++ == 1) {
	214	fprintf(stderr, "[Error] Line too large for packet size (%" PRIu64 "kB) (discarded)\n",
	215	pos->packet_size / CHAR_BIT / 1024);
	216	return;
	217	}
	218	goto retry;
	219	}
	220
	221	write_event_header(pos, line, &tline, len, &tlen, &ts);
	222	ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
	223	memcpy(ctf_get_pos_addr(pos), tline, tlen);
	224	ctf_move_pos(pos, tlen * CHAR_BIT);
	225	}
	226
	227	static
	228	void trace_text(FILE *input, int output)
	229	{
	230	struct ctf_stream_pos pos;
	231	ssize_t len;
	232	char line = NULL, nl;
	233	size_t linesize;
	234
	235	memset(&pos, 0, sizeof(pos));
	236	ctf_init_pos(&pos, output, O_RDWR);
	237
	238	write_packet_header(&pos, s_uuid);
	239	write_packet_context(&pos);
	240	for (;;) {
	241	len = getline(&line, &linesize, input);
	242	if (len < 0)
	243	break;
	244	nl = strrchr(line, '\n');
	245	if (nl) {
	246	*nl = '\0';
	247	trace_string(line, &pos, nl - line + 1);
	248	} else {
	249	trace_string(line, &pos, strlen(line) + 1);
	250	}
	251	}
	252	ctf_fini_pos(&pos);
	253	}
	254
	255	static
	256	void usage(FILE *fp)
	257	{
	258	fprintf(fp, "BabelTrace Log Converter %s\n", VERSION);
	259	fprintf(fp, "\n");
	260	fprintf(fp, "Convert for a text log (read from standard input) to CTF.\n");
	261	fprintf(fp, "\n");
	262	fprintf(fp, "usage : babeltrace-log [OPTIONS] OUTPUT\n");
	263	fprintf(fp, "\n");
	264	fprintf(fp, " OUTPUT Output trace path\n");
	265	fprintf(fp, "\n");
	266	fprintf(fp, " -t With timestamps (format: [sec.usec] string\\n)\n");
	267	fprintf(fp, "\n");
	268	}
	269
	270	static
	271	int parse_args(int argc, char **argv)
	272	{
	273	int i;
	274
	275	for (i = 1; i < argc; i++) {
	276	if (!strcmp(argv[i], "-t"))
	277	s_timestamp = 1;
	278	else if (!strcmp(argv[i], "-h")) {
	279	s_help = 1;
	280	return 0;
	281	} else if (argv[i][0] == '-')
	282	return -EINVAL;
	283	else
	284	s_outputname = argv[i];
	285	}
	286	if (!s_outputname)
	287	return -EINVAL;
	288	return 0;
	289	}
	290
	291	int main(int argc, char **argv)
	292	{
	293	int fd, metadata_fd, ret;
	294	DIR *dir;
	295	int dir_fd;
	296	FILE *metadata_fp;
	297
	298	ret = parse_args(argc, argv);
	299	if (ret) {
	300	fprintf(stderr, "Error: invalid argument.\n");
	301	usage(stderr);
	302	goto error;
	303	}
	304
	305	if (s_help) {
	306	usage(stdout);
	307	exit(EXIT_SUCCESS);
	308	}
	309
	310	ret = mkdir(s_outputname, S_IRWXU\|S_IRWXG);
	311	if (ret) {
	312	perror("mkdir");
	313	goto error;
	314	}
	315
	316	dir = opendir(s_outputname);
	317	if (!dir) {
	318	perror("opendir");
	319	goto error_rmdir;
	320	}
	321	dir_fd = dirfd(dir);
	322	if (dir_fd < 0) {
	323	perror("dirfd");
	324	goto error_closedir;
	325	}
	326
	327	fd = openat(dir_fd, "datastream", O_RDWR\|O_CREAT,
	328	S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IWGRP);
	329	if (fd < 0) {
	330	perror("openat");
	331	goto error_closedirfd;
	332	}
	333
	334	metadata_fd = openat(dir_fd, "metadata", O_RDWR\|O_CREAT,
	335	S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IWGRP);
	336	if (fd < 0) {
	337	perror("openat");
	338	goto error_closedatastream;
	339	}
	340	metadata_fp = fdopen(metadata_fd, "w");
	341	if (!metadata_fp) {
	342	perror("fdopen");
	343	goto error_closemetadatafd;
	344	}
	345
	346	babeltrace_uuid_generate(s_uuid);
	347	print_metadata(metadata_fp);
	348	trace_text(stdin, fd);
	349
	350	close(fd);
	351	exit(EXIT_SUCCESS);
	352
	353	/* error handling */
	354	error_closemetadatafd:
	355	ret = close(metadata_fd);
	356	if (ret)
	357	perror("close");
	358	error_closedatastream:
	359	ret = close(fd);
	360	if (ret)
	361	perror("close");
	362	error_closedirfd:
	363	ret = close(dir_fd);
	364	if (ret)
	365	perror("close");
	366	error_closedir:
	367	ret = closedir(dir);
	368	if (ret)
	369	perror("closedir");
	370	error_rmdir:
	371	ret = rmdir(s_outputname);
	372	if (ret)
	373	perror("rmdir");
	374	error:
	375	exit(EXIT_FAILURE);
	376	}