[fio.git] / log.c

#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdarg.h>
#include <syslog.h>

#include "fio.h"

#define LOG_START_SZ		512

size_t log_info_buf(const char *buf, size_t len)
{
	/*
	 * buf could be NULL (not just "").
	 */
	if (!buf)
		return 0;

	if (is_backend) {
		size_t ret = fio_server_text_output(FIO_LOG_INFO, buf, len);
		if (ret != -1)
			return ret;
	}

	if (log_syslog) {
		syslog(LOG_INFO, "%s", buf);
		return len;
	} else
		return fwrite(buf, len, 1, f_out);
}

size_t log_valist(const char *str, va_list args)
{
	size_t len, cur = LOG_START_SZ;
	char *buffer;

	do {
		buffer = calloc(1, cur);

		len = vsnprintf(buffer, cur, str, args);
		if (len < cur)
			break;

		cur = len + 1;
		free(buffer);
	} while (1);

	cur = log_info_buf(buffer, len);
	free(buffer);

	return cur;
}

size_t log_info(const char *format, ...)
{
	size_t len, cur = LOG_START_SZ;
	char *buffer;
	va_list args;

	do {
		buffer = calloc(1, cur);

		va_start(args, format);
		len = vsnprintf(buffer, cur, format, args);
		va_end(args);

		if (len < cur)
			break;

		cur = len + 1;
		free(buffer);
	} while (1);

	cur = log_info_buf(buffer, len);
	free(buffer);

	return cur;
}

size_t __log_buf(struct buf_output *buf, const char *format, ...)
{
	size_t len, cur = LOG_START_SZ;
	char *buffer;
	va_list args;

	do {
		buffer = calloc(1, cur);

		va_start(args, format);
		len = vsnprintf(buffer, cur, format, args);
		va_end(args);

		if (len < cur)
			break;

		cur = len + 1;
		free(buffer);
	} while (1);

	cur = buf_output_add(buf, buffer, len);
	free(buffer);

	return cur;
}

int log_info_flush(void)
{
	if (is_backend || log_syslog)
		return 0;

	return fflush(f_out);
}

size_t log_err(const char *format, ...)
{
	size_t ret, len, cur = LOG_START_SZ;
	char *buffer;
	va_list args;

	do {
		buffer = calloc(1, cur);

		va_start(args, format);
		len = vsnprintf(buffer, cur, format, args);
		va_end(args);

		if (len < cur)
			break;

		cur = len + 1;
		free(buffer);
	} while (1);


	if (is_backend) {
		ret = fio_server_text_output(FIO_LOG_ERR, buffer, len);
		if (ret != -1)
			goto done;
	}

	if (log_syslog) {
		syslog(LOG_INFO, "%s", buffer);
		ret = len;
	} else {
		if (f_err != stderr)
			ret = fwrite(buffer, len, 1, stderr);

		ret = fwrite(buffer, len, 1, f_err);
	}

done:
	free(buffer);
	return ret;
}

const char *log_get_level(int level)
{
	static const char *levels[] = { "Unknown", "Debug", "Info", "Error",
						"Unknown" };

	if (level >= FIO_LOG_NR)
		level = FIO_LOG_NR;

	return levels[level];
}
Commit	Line	Data
	1	#include <unistd.h>
	2	#include <fcntl.h>
	3	#include <string.h>
	4	#include <stdarg.h>
	5	#include <syslog.h>
	6
	7	#include "fio.h"
	8
	9	#define LOG_START_SZ 512
	10
	11	size_t log_info_buf(const char *buf, size_t len)
	12	{
	13	/*
	14	* buf could be NULL (not just "").
	15	*/
	16	if (!buf)
	17	return 0;
	18
	19	if (is_backend) {
	20	size_t ret = fio_server_text_output(FIO_LOG_INFO, buf, len);
	21	if (ret != -1)
	22	return ret;
	23	}
	24
	25	if (log_syslog) {
	26	syslog(LOG_INFO, "%s", buf);
	27	return len;
	28	} else
	29	return fwrite(buf, len, 1, f_out);
	30	}
	31
	32	size_t log_valist(const char *str, va_list args)
	33	{
	34	size_t len, cur = LOG_START_SZ;
	35	char *buffer;
	36
	37	do {
	38	buffer = calloc(1, cur);
	39
	40	len = vsnprintf(buffer, cur, str, args);
	41	if (len < cur)
	42	break;
	43
	44	cur = len + 1;
	45	free(buffer);
	46	} while (1);
	47
	48	cur = log_info_buf(buffer, len);
	49	free(buffer);
	50
	51	return cur;
	52	}
	53
	54	size_t log_info(const char *format, ...)
	55	{
	56	size_t len, cur = LOG_START_SZ;
	57	char *buffer;
	58	va_list args;
	59
	60	do {
	61	buffer = calloc(1, cur);
	62
	63	va_start(args, format);
	64	len = vsnprintf(buffer, cur, format, args);
	65	va_end(args);
	66
	67	if (len < cur)
	68	break;
	69
	70	cur = len + 1;
	71	free(buffer);
	72	} while (1);
	73
	74	cur = log_info_buf(buffer, len);
	75	free(buffer);
	76
	77	return cur;
	78	}
	79
	80	size_t __log_buf(struct buf_output buf, const char format, ...)
	81	{
	82	size_t len, cur = LOG_START_SZ;
	83	char *buffer;
	84	va_list args;
	85
	86	do {
	87	buffer = calloc(1, cur);
	88
	89	va_start(args, format);
	90	len = vsnprintf(buffer, cur, format, args);
	91	va_end(args);
	92
	93	if (len < cur)
	94	break;
	95
	96	cur = len + 1;
	97	free(buffer);
	98	} while (1);
	99
	100	cur = buf_output_add(buf, buffer, len);
	101	free(buffer);
	102
	103	return cur;
	104	}
	105
	106	int log_info_flush(void)
	107	{
	108	if (is_backend \|\| log_syslog)
	109	return 0;
	110
	111	return fflush(f_out);
	112	}
	113
	114	size_t log_err(const char *format, ...)
	115	{
	116	size_t ret, len, cur = LOG_START_SZ;
	117	char *buffer;
	118	va_list args;
	119
	120	do {
	121	buffer = calloc(1, cur);
	122
	123	va_start(args, format);
	124	len = vsnprintf(buffer, cur, format, args);
	125	va_end(args);
	126
	127	if (len < cur)
	128	break;
	129
	130	cur = len + 1;
	131	free(buffer);
	132	} while (1);
	133
	134
	135	if (is_backend) {
	136	ret = fio_server_text_output(FIO_LOG_ERR, buffer, len);
	137	if (ret != -1)
	138	goto done;
	139	}
	140
	141	if (log_syslog) {
	142	syslog(LOG_INFO, "%s", buffer);
	143	ret = len;
	144	} else {
	145	if (f_err != stderr)
	146	ret = fwrite(buffer, len, 1, stderr);
	147
	148	ret = fwrite(buffer, len, 1, f_err);
	149	}
	150
	151	done:
	152	free(buffer);
	153	return ret;
	154	}
	155
	156	const char *log_get_level(int level)
	157	{
	158	static const char *levels[] = { "Unknown", "Debug", "Info", "Error",
	159	"Unknown" };
	160
	161	if (level >= FIO_LOG_NR)
	162	level = FIO_LOG_NR;
	163
	164	return levels[level];
	165	}