[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().
 */

#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 <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"
"\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"
"		uint32_t content_size;\n"
"		uint32_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(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) = -1U;	/* Not known yet */
	pos->content_size_loc = (uint32_t *) ctf_get_pos_addr(pos);
	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);

	/* packet_size */
	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) = pos->packet_size;
	ctf_move_pos(pos, sizeof(uint32_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 (%zukB) (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;

	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);
	}
	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	#include <config.h>
	24	#include <sys/types.h>
	25	#include <sys/stat.h>
	26	#include <fcntl.h>
	27	#include <sys/mman.h>
	28	#include <dirent.h>
	29	#include <stdio.h>
	30	#include <stdlib.h>
	31	#include <stdint.h>
	32	#include <unistd.h>
	33	#include <errno.h>
	34	#include <string.h>
	35
	36	#include <babeltrace/babeltrace-internal.h>
	37	#include <babeltrace/ctf/types.h>
	38	#include <babeltrace/uuid.h>
	39	#include <babeltrace/endian.h>
	40
	41	#define USEC_PER_SEC 1000000UL
	42
	43	int babeltrace_debug, babeltrace_verbose;
	44
	45	static char *s_outputname;
	46	static int s_timestamp;
	47	static int s_help;
	48	static unsigned char s_uuid[BABELTRACE_UUID_LEN];
	49
	50	/* Metadata format string */
	51	static const char metadata_fmt[] =
	52	"/* CTF 1.8 */\n"
	53	"typealias integer { size = 8; align = 8; signed = false; } := uint8_t;\n"
	54	"typealias integer { size = 32; align = 32; signed = false; } := uint32_t;\n"
	55	"\n"
	56	"trace {\n"
	57	" major = %u;\n" /* major (e.g. 0) */
	58	" minor = %u;\n" /* minor (e.g. 1) */
	59	" uuid = \"%s\";\n" /* UUID */
	60	" byte_order = %s;\n" /* be or le */
	61	" packet.header := struct {\n"
	62	" uint32_t magic;\n"
	63	" uint8_t uuid[16];\n"
	64	" };\n"
	65	"};\n"
	66	"\n"
	67	"stream {\n"
	68	" packet.context := struct {\n"
	69	" uint32_t content_size;\n"
	70	" uint32_t packet_size;\n"
	71	" };\n"
	72	"%s" /* Stream event header (opt.) */
	73	"};\n"
	74	"\n"
	75	"event {\n"
	76	" name = string;\n"
	77	" fields := struct { string str; };\n"
	78	"};\n";
	79
	80	static const char metadata_stream_event_header_timestamp[] =
	81	" typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
	82	" event.header := struct {\n"
	83	" uint64_t timestamp;\n"
	84	" };\n";
	85
	86	static
	87	void print_metadata(FILE *fp)
	88	{
	89	char uuid_str[BABELTRACE_UUID_STR_LEN];
	90	unsigned int major = 0, minor = 0;
	91	int ret;
	92
	93	ret = sscanf(VERSION, "%u.%u", &major, &minor);
	94	if (ret != 2)
	95	fprintf(stderr, "[warning] Incorrect babeltrace version format\n.");
	96	babeltrace_uuid_unparse(s_uuid, uuid_str);
	97	fprintf(fp, metadata_fmt,
	98	major,
	99	minor,
	100	uuid_str,
	101	BYTE_ORDER == LITTLE_ENDIAN ? "le" : "be",
	102	s_timestamp ? metadata_stream_event_header_timestamp : "");
	103	}
	104
	105	static
	106	void write_packet_header(struct ctf_stream_pos pos, unsigned char uuid)
	107	{
	108	struct ctf_stream_pos dummy;
	109
	110	/* magic */
	111	ctf_dummy_pos(pos, &dummy);
	112	ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	113	ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	114	assert(!ctf_pos_packet(&dummy));
	115
	116	ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	117	(uint32_t ) ctf_get_pos_addr(pos) = 0xC1FC1FC1;
	118	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	119
	120	/* uuid */
	121	ctf_dummy_pos(pos, &dummy);
	122	ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
	123	ctf_move_pos(&dummy, 16 * CHAR_BIT);
	124	assert(!ctf_pos_packet(&dummy));
	125
	126	ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
	127	memcpy(ctf_get_pos_addr(pos), uuid, BABELTRACE_UUID_LEN);
	128	ctf_move_pos(pos, BABELTRACE_UUID_LEN * CHAR_BIT);
	129	}
	130
	131	static
	132	void write_packet_context(struct ctf_stream_pos *pos)
	133	{
	134	struct ctf_stream_pos dummy;
	135
	136	/* content_size */
	137	ctf_dummy_pos(pos, &dummy);
	138	ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	139	ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	140	assert(!ctf_pos_packet(&dummy));
	141
	142	ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	143	(uint32_t ) ctf_get_pos_addr(pos) = -1U; /* Not known yet */
	144	pos->content_size_loc = (uint32_t *) ctf_get_pos_addr(pos);
	145	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	146
	147	/* packet_size */
	148	ctf_dummy_pos(pos, &dummy);
	149	ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	150	ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	151	assert(!ctf_pos_packet(&dummy));
	152
	153	ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	154	(uint32_t ) ctf_get_pos_addr(pos) = pos->packet_size;
	155	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	156	}
	157
	158	static
	159	void write_event_header(struct ctf_stream_pos pos, char line,
	160	char *tline, size_t len, size_t tlen,
	161	uint64_t *ts)
	162	{
	163	unsigned long sec, usec;
	164	int ret;
	165
	166	if (!s_timestamp)
	167	return;
	168
	169	/* Only need to be executed on first pass (dummy) */
	170	if (pos->dummy) {
	171	/* Extract time from input line */
	172	ret = sscanf(line, "[%lu.%lu] ", &sec, &usec);
	173	if (ret == 2) {
	174	*tline = strchr(line, ']');
	175	assert(*tline);
	176	(*tline)++;
	177	if ((*tline)[0] == ' ') {
	178	(*tline)++;
	179	}
	180	tlen = len + line - tline;
	181	ts = (uint64_t) sec USEC_PER_SEC + (uint64_t) usec;
	182	}
	183	}
	184	/* timestamp */
	185	ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	186	if (!pos->dummy)
	187	(uint64_t ) ctf_get_pos_addr(pos) = *ts;
	188	ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	189	}
	190
	191	static
	192	void trace_string(char line, struct ctf_stream_pos pos, size_t len)
	193	{
	194	struct ctf_stream_pos dummy;
	195	int attempt = 0;
	196	char tline = line; / tline is start of text, after timestamp */
	197	size_t tlen = len;
	198	uint64_t ts = 0;
	199
	200	printf_debug("read: %s\n", line);
	201	retry:
	202	ctf_dummy_pos(pos, &dummy);
	203	write_event_header(&dummy, line, &tline, len, &tlen, &ts);
	204	ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
	205	ctf_move_pos(&dummy, tlen * CHAR_BIT);
	206	if (ctf_pos_packet(&dummy)) {
	207	ctf_pos_pad_packet(pos);
	208	write_packet_header(pos, s_uuid);
	209	write_packet_context(pos);
	210	if (attempt++ == 1) {
	211	fprintf(stderr, "[Error] Line too large for packet size (%zukB) (discarded)\n",
	212	pos->packet_size / CHAR_BIT / 1024);
	213	return;
	214	}
	215	goto retry;
	216	}
	217
	218	write_event_header(pos, line, &tline, len, &tlen, &ts);
	219	ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
	220	memcpy(ctf_get_pos_addr(pos), tline, tlen);
	221	ctf_move_pos(pos, tlen * CHAR_BIT);
	222	}
	223
	224	static
	225	void trace_text(FILE *input, int output)
	226	{
	227	struct ctf_stream_pos pos;
	228	ssize_t len;
	229	char line = NULL, nl;
	230	size_t linesize;
	231
	232	ctf_init_pos(&pos, output, O_RDWR);
	233
	234	write_packet_header(&pos, s_uuid);
	235	write_packet_context(&pos);
	236	for (;;) {
	237	len = getline(&line, &linesize, input);
	238	if (len < 0)
	239	break;
	240	nl = strrchr(line, '\n');
	241	if (nl)
	242	*nl = '\0';
	243	trace_string(line, &pos, nl - line + 1);
	244	}
	245	ctf_fini_pos(&pos);
	246	}
	247
	248	static
	249	void usage(FILE *fp)
	250	{
	251	fprintf(fp, "BabelTrace Log Converter %s\n", VERSION);
	252	fprintf(fp, "\n");
	253	fprintf(fp, "Convert for a text log (read from standard input) to CTF.\n");
	254	fprintf(fp, "\n");
	255	fprintf(fp, "usage : babeltrace-log [OPTIONS] OUTPUT\n");
	256	fprintf(fp, "\n");
	257	fprintf(fp, " OUTPUT Output trace path\n");
	258	fprintf(fp, "\n");
	259	fprintf(fp, " -t With timestamps (format: [sec.usec] string\\n)\n");
	260	fprintf(fp, "\n");
	261	}
	262
	263	static
	264	int parse_args(int argc, char **argv)
	265	{
	266	int i;
	267
	268	for (i = 1; i < argc; i++) {
	269	if (!strcmp(argv[i], "-t"))
	270	s_timestamp = 1;
	271	else if (!strcmp(argv[i], "-h")) {
	272	s_help = 1;
	273	return 0;
	274	} else if (argv[i][0] == '-')
	275	return -EINVAL;
	276	else
	277	s_outputname = argv[i];
	278	}
	279	if (!s_outputname)
	280	return -EINVAL;
	281	return 0;
	282	}
	283
	284	int main(int argc, char **argv)
	285	{
	286	int fd, metadata_fd, ret;
	287	DIR *dir;
	288	int dir_fd;
	289	FILE *metadata_fp;
	290
	291	ret = parse_args(argc, argv);
	292	if (ret) {
	293	fprintf(stderr, "Error: invalid argument.\n");
	294	usage(stderr);
	295	goto error;
	296	}
	297
	298	if (s_help) {
	299	usage(stdout);
	300	exit(EXIT_SUCCESS);
	301	}
	302
	303	ret = mkdir(s_outputname, S_IRWXU\|S_IRWXG);
	304	if (ret) {
	305	perror("mkdir");
	306	goto error;
	307	}
	308
	309	dir = opendir(s_outputname);
	310	if (!dir) {
	311	perror("opendir");
	312	goto error_rmdir;
	313	}
	314	dir_fd = dirfd(dir);
	315	if (dir_fd < 0) {
	316	perror("dirfd");
	317	goto error_closedir;
	318	}
	319
	320	fd = openat(dir_fd, "datastream", O_RDWR\|O_CREAT,
	321	S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IWGRP);
	322	if (fd < 0) {
	323	perror("openat");
	324	goto error_closedirfd;
	325	}
	326
	327	metadata_fd = openat(dir_fd, "metadata", O_RDWR\|O_CREAT,
	328	S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IWGRP);
	329	if (fd < 0) {
	330	perror("openat");
	331	goto error_closedatastream;
	332	}
	333	metadata_fp = fdopen(metadata_fd, "w");
	334	if (!metadata_fp) {
	335	perror("fdopen");
	336	goto error_closemetadatafd;
	337	}
	338
	339	babeltrace_uuid_generate(s_uuid);
	340	print_metadata(metadata_fp);
	341	trace_text(stdin, fd);
	342
	343	close(fd);
	344	exit(EXIT_SUCCESS);
	345
	346	/* error handling */
	347	error_closemetadatafd:
	348	ret = close(metadata_fd);
	349	if (ret)
	350	perror("close");
	351	error_closedatastream:
	352	ret = close(fd);
	353	if (ret)
	354	perror("close");
	355	error_closedirfd:
	356	ret = close(dir_fd);
	357	if (ret)
	358	perror("close");
	359	error_closedir:
	360	ret = closedir(dir);
	361	if (ret)
	362	perror("closedir");
	363	error_rmdir:
	364	ret = rmdir(s_outputname);
	365	if (ret)
	366	perror("rmdir");
	367	error:
	368	exit(EXIT_FAILURE);
	369	}