[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 <uuid/uuid.h>
#include <string.h>
#include <endian.h>

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

#define USEC_PER_SEC 1000000UL

#ifndef UUID_STR_LEN
#define UUID_STR_LEN	37	/* With \0 */
#endif

int babeltrace_debug, babeltrace_verbose;

static char *s_outputname;
static int s_timestamp;
static int s_help;
static uuid_t s_uuid;

/* 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[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.");
	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, uuid_t 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, 16);
	ctf_move_pos(pos, 16 * 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;
	}

	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
8c572eba	1	/*
b522ac18	2	* babeltrace-log.c
8c572eba	3	*
b522ac18	4	* BabelTrace - Convert Text Log to CTF
8c572eba	5	*
64fa3fec MD	6	* Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
	7	*
	8	* Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
8c572eba MD	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
00f7fbf0	23	#include <config.h>
90219914 MD	24	#include <sys/types.h>
	25	#include <sys/stat.h>
	26	#include <fcntl.h>
	27	#include <sys/mman.h>
989c73bc	28	#include <dirent.h>
90219914	29	#include <stdio.h>
989c73bc	30	#include <stdlib.h>
90219914 MD	31	#include <stdint.h>
	32	#include <unistd.h>
	33	#include <errno.h>
	34	#include <uuid/uuid.h>
	35	#include <string.h>
989c73bc	36	#include <endian.h>
90219914	37
70bd0a12	38	#include <babeltrace/babeltrace-internal.h>
8c572eba MD	39	#include <babeltrace/ctf/types.h>
8c572eba MD	40
bfe09576	41	#define USEC_PER_SEC 1000000UL
ca8b2b02	42
b522ac18 MD	43	#ifndef UUID_STR_LEN
	44	#define UUID_STR_LEN 37 /* With \0 */
	45	#endif
	46
ca8b2b02 MD	47	int babeltrace_debug, babeltrace_verbose;
	48
	49	static char *s_outputname;
	50	static int s_timestamp;
39592eae	51	static int s_help;
ca8b2b02 MD	52	static uuid_t s_uuid;
ca8b2b02 MD	53
b522ac18 MD	54	/* Metadata format string */
b522ac18 MD	55	static const char metadata_fmt[] =
408a2c4d	56	"/* CTF 1.8 */\n"
989c73bc MD	57	"typealias integer { size = 8; align = 8; signed = false; } := uint8_t;\n"
	58	"typealias integer { size = 32; align = 32; signed = false; } := uint32_t;\n"
	59	"\n"
	60	"trace {\n"
c818559a MD	61	" major = %u;\n" /* major (e.g. 0) */
c818559a MD	62	" minor = %u;\n" /* minor (e.g. 1) */
b522ac18	63	" uuid = \"%s\";\n" /* UUID */
989c73bc MD	64	" byte_order = %s;\n" /* be or le */
	65	" packet.header := struct {\n"
	66	" uint32_t magic;\n"
b4c19c1e	67	" uint8_t uuid[16];\n"
989c73bc MD	68	" };\n"
	69	"};\n"
	70	"\n"
	71	"stream {\n"
	72	" packet.context := struct {\n"
	73	" uint32_t content_size;\n"
	74	" uint32_t packet_size;\n"
	75	" };\n"
ca8b2b02	76	"%s" /* Stream event header (opt.) */
989c73bc MD	77	"};\n"
	78	"\n"
	79	"event {\n"
	80	" name = string;\n"
	81	" fields := struct { string str; };\n"
	82	"};\n";
	83
ca8b2b02 MD	84	static const char metadata_stream_event_header_timestamp[] =
	85	" typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
	86	" event.header := struct {\n"
	87	" uint64_t timestamp;\n"
	88	" };\n";
8c572eba	89
b522ac18 MD	90	static
	91	void print_metadata(FILE *fp)
	92	{
	93	char uuid_str[UUID_STR_LEN];
00f7fbf0 MD	94	unsigned int major = 0, minor = 0;
00f7fbf0 MD	95	int ret;
b522ac18	96
00f7fbf0 MD	97	ret = sscanf(VERSION, "%u.%u", &major, &minor);
	98	if (ret != 2)
	99	fprintf(stderr, "[warning] Incorrect babeltrace version format\n.");
b522ac18 MD	100	uuid_unparse(s_uuid, uuid_str);
b522ac18 MD	101	fprintf(fp, metadata_fmt,
00f7fbf0 MD	102	major,
00f7fbf0 MD	103	minor,
b522ac18	104	uuid_str,
ca8b2b02 MD	105	BYTE_ORDER == LITTLE_ENDIAN ? "le" : "be",
ca8b2b02 MD	106	s_timestamp ? metadata_stream_event_header_timestamp : "");
b522ac18 MD	107	}
b522ac18 MD	108
8c572eba	109	static
46322b33	110	void write_packet_header(struct ctf_stream_pos *pos, uuid_t uuid)
8c572eba	111	{
46322b33	112	struct ctf_stream_pos dummy;
8c572eba MD	113
8c572eba MD	114	/* magic */
46322b33 MD	115	ctf_dummy_pos(pos, &dummy);
	116	ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	117	ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	118	assert(!ctf_pos_packet(&dummy));
8c572eba	119
46322b33 MD	120	ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	121	(uint32_t ) ctf_get_pos_addr(pos) = 0xC1FC1FC1;
	122	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
8c572eba	123
b4c19c1e	124	/* uuid */
46322b33 MD	125	ctf_dummy_pos(pos, &dummy);
	126	ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
	127	ctf_move_pos(&dummy, 16 * CHAR_BIT);
	128	assert(!ctf_pos_packet(&dummy));
	129
	130	ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
	131	memcpy(ctf_get_pos_addr(pos), uuid, 16);
	132	ctf_move_pos(pos, 16 * CHAR_BIT);
8c572eba MD	133	}
	134
	135	static
46322b33	136	void write_packet_context(struct ctf_stream_pos *pos)
8c572eba	137	{
46322b33	138	struct ctf_stream_pos dummy;
8c572eba MD	139
8c572eba MD	140	/* content_size */
46322b33 MD	141	ctf_dummy_pos(pos, &dummy);
	142	ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	143	ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	144	assert(!ctf_pos_packet(&dummy));
8c572eba	145
46322b33 MD	146	ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	147	(uint32_t ) ctf_get_pos_addr(pos) = -1U; /* Not known yet */
	148	pos->content_size_loc = (uint32_t *) ctf_get_pos_addr(pos);
	149	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
8c572eba MD	150
8c572eba MD	151	/* packet_size */
46322b33 MD	152	ctf_dummy_pos(pos, &dummy);
	153	ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	154	ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
	155	assert(!ctf_pos_packet(&dummy));
8c572eba	156
46322b33 MD	157	ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
	158	(uint32_t ) ctf_get_pos_addr(pos) = pos->packet_size;
	159	ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
8c572eba MD	160	}
8c572eba MD	161
ca8b2b02 MD	162	static
	163	void write_event_header(struct ctf_stream_pos pos, char line,
	164	char *tline, size_t len, size_t tlen,
	165	uint64_t *ts)
	166	{
bfe09576	167	unsigned long sec, usec;
ca8b2b02 MD	168	int ret;
	169
	170	if (!s_timestamp)
	171	return;
	172
	173	/* Only need to be executed on first pass (dummy) */
	174	if (pos->dummy) {
	175	/* Extract time from input line */
bfe09576	176	ret = sscanf(line, "[%lu.%lu] ", &sec, &usec);
ca8b2b02 MD	177	if (ret == 2) {
ca8b2b02 MD	178	*tline = strchr(line, ']');
bfe09576 MD	179	assert(*tline);
	180	(*tline)++;
	181	if ((*tline)[0] == ' ') {
ca8b2b02	182	(*tline)++;
bfe09576	183	}
ca8b2b02	184	tlen = len + line - tline;
bfe09576	185	ts = (uint64_t) sec USEC_PER_SEC + (uint64_t) usec;
ca8b2b02 MD	186	}
	187	}
	188	/* timestamp */
	189	ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	190	if (!pos->dummy)
bc7eb6c8	191	(uint64_t ) ctf_get_pos_addr(pos) = *ts;
ca8b2b02 MD	192	ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);
	193	}
	194
8c572eba	195	static
46322b33	196	void trace_string(char line, struct ctf_stream_pos pos, size_t len)
8c572eba	197	{
46322b33	198	struct ctf_stream_pos dummy;
8c572eba	199	int attempt = 0;
ca8b2b02 MD	200	char tline = line; / tline is start of text, after timestamp */
	201	size_t tlen = len;
	202	uint64_t ts = 0;
8c572eba MD	203
	204	printf_debug("read: %s\n", line);
	205	retry:
46322b33	206	ctf_dummy_pos(pos, &dummy);
ca8b2b02	207	write_event_header(&dummy, line, &tline, len, &tlen, &ts);
46322b33	208	ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
ca8b2b02	209	ctf_move_pos(&dummy, tlen * CHAR_BIT);
46322b33	210	if (ctf_pos_packet(&dummy)) {
46322b33	211	ctf_pos_pad_packet(pos);
8c572eba MD	212	write_packet_header(pos, s_uuid);
	213	write_packet_context(pos);
	214	if (attempt++ == 1) {
3394d22e	215	fprintf(stderr, "[Error] Line too large for packet size (%zukB) (discarded)\n",
8c572eba MD	216	pos->packet_size / CHAR_BIT / 1024);
	217	return;
	218	}
	219	goto retry;
	220	}
	221
ca8b2b02	222	write_event_header(pos, line, &tline, len, &tlen, &ts);
46322b33	223	ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
ca8b2b02 MD	224	memcpy(ctf_get_pos_addr(pos), tline, tlen);
ca8b2b02 MD	225	ctf_move_pos(pos, tlen * CHAR_BIT);
8c572eba MD	226	}
	227
	228	static
	229	void trace_text(FILE *input, int output)
	230	{
46322b33	231	struct ctf_stream_pos pos;
8c572eba MD	232	ssize_t len;
	233	char line = NULL, nl;
	234	size_t linesize;
	235
989c73bc	236	ctf_init_pos(&pos, output, O_RDWR);
8c572eba MD	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	}
46322b33	249	ctf_fini_pos(&pos);
8c572eba	250	}
90219914	251
ca8b2b02 MD	252	static
ca8b2b02 MD	253	void usage(FILE *fp)
989c73bc	254	{
00f7fbf0	255	fprintf(fp, "BabelTrace Log Converter %s\n", VERSION);
989c73bc MD	256	fprintf(fp, "\n");
	257	fprintf(fp, "Convert for a text log (read from standard input) to CTF.\n");
	258	fprintf(fp, "\n");
78893e6e	259	fprintf(fp, "usage : babeltrace-log [OPTIONS] OUTPUT\n");
989c73bc MD	260	fprintf(fp, "\n");
	261	fprintf(fp, " OUTPUT Output trace path\n");
	262	fprintf(fp, "\n");
78893e6e MD	263	fprintf(fp, " -t With timestamps (format: [sec.usec] string\\n)\n");
78893e6e MD	264	fprintf(fp, "\n");
989c73bc MD	265	}
989c73bc MD	266
ca8b2b02 MD	267	static
	268	int parse_args(int argc, char **argv)
	269	{
	270	int i;
	271
	272	for (i = 1; i < argc; i++) {
	273	if (!strcmp(argv[i], "-t"))
	274	s_timestamp = 1;
39592eae MD	275	else if (!strcmp(argv[i], "-h")) {
	276	s_help = 1;
	277	return 0;
	278	} else if (argv[i][0] == '-')
	279	return -EINVAL;
ca8b2b02 MD	280	else
	281	s_outputname = argv[i];
	282	}
	283	if (!s_outputname)
	284	return -EINVAL;
	285	return 0;
	286	}
	287
90219914 MD	288	int main(int argc, char **argv)
90219914 MD	289	{
b522ac18	290	int fd, metadata_fd, ret;
989c73bc MD	291	DIR *dir;
989c73bc MD	292	int dir_fd;
b522ac18	293	FILE *metadata_fp;
90219914	294
ca8b2b02 MD	295	ret = parse_args(argc, argv);
ca8b2b02 MD	296	if (ret) {
3394d22e MD	297	fprintf(stderr, "Error: invalid argument.\n");
3394d22e MD	298	usage(stderr);
989c73bc	299	goto error;
90219914	300	}
90219914	301
39592eae MD	302	if (s_help) {
	303	usage(stdout);
	304	exit(EXIT_SUCCESS);
	305	}
	306
ca8b2b02	307	ret = mkdir(s_outputname, S_IRWXU\|S_IRWXG);
90219914	308	if (ret) {
989c73bc MD	309	perror("mkdir");
	310	goto error;
	311	}
	312
ca8b2b02	313	dir = opendir(s_outputname);
989c73bc MD	314	if (!dir) {
	315	perror("opendir");
	316	goto error_rmdir;
	317	}
	318	dir_fd = dirfd(dir);
	319	if (dir_fd < 0) {
	320	perror("dirfd");
	321	goto error_closedir;
	322	}
	323
	324	fd = openat(dir_fd, "datastream", O_RDWR\|O_CREAT,
	325	S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IWGRP);
	326	if (fd < 0) {
	327	perror("openat");
	328	goto error_closedirfd;
90219914	329	}
90219914	330
b522ac18 MD	331	metadata_fd = openat(dir_fd, "metadata", O_RDWR\|O_CREAT,
	332	S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IWGRP);
	333	if (fd < 0) {
	334	perror("openat");
	335	goto error_closedatastream;
	336	}
	337	metadata_fp = fdopen(metadata_fd, "w");
	338	if (!metadata_fp) {
	339	perror("fdopen");
	340	goto error_closemetadatafd;
	341	}
	342
	343	uuid_generate(s_uuid);
	344	print_metadata(metadata_fp);
8c572eba	345	trace_text(stdin, fd);
989c73bc	346
90219914	347	close(fd);
989c73bc MD	348	exit(EXIT_SUCCESS);
	349
	350	/* error handling */
b522ac18 MD	351	error_closemetadatafd:
	352	ret = close(metadata_fd);
	353	if (ret)
	354	perror("close");
	355	error_closedatastream:
	356	ret = close(fd);
	357	if (ret)
	358	perror("close");
989c73bc MD	359	error_closedirfd:
	360	ret = close(dir_fd);
	361	if (ret)
	362	perror("close");
	363	error_closedir:
	364	ret = closedir(dir);
	365	if (ret)
	366	perror("closedir");
	367	error_rmdir:
ca8b2b02	368	ret = rmdir(s_outputname);
989c73bc MD	369	if (ret)
	370	perror("rmdir");
	371	error:
	372	exit(EXIT_FAILURE);
90219914	373	}