blob: d2a20de780e94e8fe6151c59b8f90d8aa60c0e4c [file] [log] [blame]
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <syslog.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <glib.h>
#include "lib/bluetooth.h"
#include "lib/hci.h"
#include "src/shared/util.h"
#include "log.h"
#define LOG_IDENT "bluetoothd"
#define LOG_IDENT_LEN sizeof(LOG_IDENT)
struct log_hdr {
uint16_t opcode;
uint16_t index;
uint16_t len;
uint8_t priority;
uint8_t ident_len;
} __attribute__((packed));
static int logging_fd = -1;
static void logging_open(void)
{
struct sockaddr_hci addr;
int fd;
if (logging_fd >= 0)
return;
fd = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
if (fd < 0)
return;
memset(&addr, 0, sizeof(addr));
addr.hci_family = AF_BLUETOOTH;
addr.hci_dev = HCI_DEV_NONE;
addr.hci_channel = HCI_CHANNEL_LOGGING;
if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
close(fd);
return;
}
logging_fd = fd;
}
static void logging_close(void)
{
if (logging_fd >= 0) {
close(logging_fd);
logging_fd = -1;
}
}
static void logging_log(uint16_t index, int priority,
const char *format, va_list ap)
{
struct log_hdr hdr;
struct msghdr msg;
struct iovec iov[3];
uint16_t len;
char *str;
if (vasprintf(&str, format, ap) < 0)
return;
len = strlen(str) + 1;
hdr.opcode = cpu_to_le16(0x0000);
hdr.index = cpu_to_le16(index);
hdr.len = cpu_to_le16(2 + LOG_IDENT_LEN + len);
hdr.priority = priority;
hdr.ident_len = LOG_IDENT_LEN;
iov[0].iov_base = &hdr;
iov[0].iov_len = sizeof(hdr);
iov[1].iov_base = LOG_IDENT;
iov[1].iov_len = LOG_IDENT_LEN;
iov[2].iov_base = str;
iov[2].iov_len = len;
memset(&msg, 0, sizeof(msg));
msg.msg_iov = iov;
msg.msg_iovlen = 3;
if (sendmsg(logging_fd, &msg, 0) < 0) {
if (errno != ENODEV) {
close(logging_fd);
logging_fd = -1;
}
}
free(str);
}
void error(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsyslog(LOG_ERR, format, ap);
va_end(ap);
if (logging_fd < 0)
return;
va_start(ap, format);
logging_log(HCI_DEV_NONE, LOG_ERR, format, ap);
va_end(ap);
}
void warn(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsyslog(LOG_WARNING, format, ap);
va_end(ap);
if (logging_fd < 0)
return;
va_start(ap, format);
logging_log(HCI_DEV_NONE, LOG_WARNING, format, ap);
va_end(ap);
}
void info(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsyslog(LOG_INFO, format, ap);
va_end(ap);
if (logging_fd < 0)
return;
va_start(ap, format);
logging_log(HCI_DEV_NONE, LOG_INFO, format, ap);
va_end(ap);
}
void btd_log(uint16_t index, int priority, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsyslog(priority, format, ap);
va_end(ap);
if (logging_fd < 0)
return;
va_start(ap, format);
logging_log(index, priority, format, ap);
va_end(ap);
}
void btd_error(uint16_t index, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsyslog(LOG_ERR, format, ap);
va_end(ap);
if (logging_fd < 0)
return;
va_start(ap, format);
logging_log(index, LOG_ERR, format, ap);
va_end(ap);
}
void btd_warn(uint16_t index, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsyslog(LOG_WARNING, format, ap);
va_end(ap);
if (logging_fd < 0)
return;
va_start(ap, format);
logging_log(index, LOG_WARNING, format, ap);
va_end(ap);
}
void btd_info(uint16_t index, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsyslog(LOG_INFO, format, ap);
va_end(ap);
if (logging_fd < 0)
return;
va_start(ap, format);
logging_log(index, LOG_INFO, format, ap);
va_end(ap);
}
void btd_debug(uint16_t index, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsyslog(LOG_DEBUG, format, ap);
va_end(ap);
if (logging_fd < 0)
return;
va_start(ap, format);
logging_log(index, LOG_DEBUG, format, ap);
va_end(ap);
}
extern struct btd_debug_desc __start___debug[];
extern struct btd_debug_desc __stop___debug[];
static char **enabled = NULL;
static gboolean is_enabled(struct btd_debug_desc *desc)
{
int i;
if (enabled == NULL)
return 0;
for (i = 0; enabled[i] != NULL; i++)
if (desc->file != NULL && g_pattern_match_simple(enabled[i],
desc->file) == TRUE)
return 1;
return 0;
}
void __btd_enable_debug(struct btd_debug_desc *start,
struct btd_debug_desc *stop)
{
struct btd_debug_desc *desc;
if (start == NULL || stop == NULL)
return;
for (desc = start; desc < stop; desc++) {
if (is_enabled(desc))
desc->flags |= BTD_DEBUG_FLAG_PRINT;
}
}
void __btd_toggle_debug(void)
{
struct btd_debug_desc *desc;
for (desc = __start___debug; desc < __stop___debug; desc++)
desc->flags |= BTD_DEBUG_FLAG_PRINT;
}
void __btd_log_init(const char *debug, int detach)
{
int option = LOG_NDELAY | LOG_PID;
if (debug != NULL)
enabled = g_strsplit_set(debug, ":, ", 0);
__btd_enable_debug(__start___debug, __stop___debug);
logging_open();
if (!detach)
option |= LOG_PERROR;
openlog(LOG_IDENT, option, LOG_DAEMON);
info("Bluetooth daemon %s", VERSION);
}
void __btd_log_cleanup(void)
{
closelog();
logging_close();
g_strfreev(enabled);
}