util.c File Reference

set of utility functions More...

#include <stdio.h>
#include <ctype.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <limits.h>
#include <string.h>
#include "util.h"

Go to the source code of this file.

Functions
void	util_debug (util_debug_func_t function, void *user_data, const char *format,...)
void	util_hexdump (const char dir, const unsigned char *buf, size_t len, util_debug_func_t function, void *user_data)
unsigned char	util_get_dt (const char *parent, const char *name)
uint8_t	util_get_uid (unsigned int *bitmap, uint8_t max)
void	util_clear_uid (unsigned int *bitmap, uint8_t id)

Detailed Description

set of utility functions

Author

Gilbert Brault

Copyright

Gilbert Brault 2015 the original work comes from bluez v5.39 value add: documenting main features

Definition in file util.c.

Function Documentation

void util_clear_uid	(	unsigned int *	bitmap,
		uint8_t	id
	)

Clear id bit in bitmap

Parameters

bitmap	map of bits
id	bit rank to clear

Definition at line 172 of file util.c.

void util_debug	(	util_debug_func_t	function,
		void *	user_data,
		const char *	format,
			...
	)

create a str debug message using format and then call function(str,user_data)

Parameters

function	function to call
user_data	data for the "function"
format	format string template of str string

Definition at line 56 of file util.c.

References timeout_data::user_data.

Referenced by bt_gatt_client_prepare_write(), can_read_data(), can_write_data(), disconnect_cb(), discover_chrcs_cb(), discover_descs(), discover_descs_cb(), discover_incl_cb(), discover_primary_cb(), discover_secondary_cb(), encode_pdu(), exchange_mtu_cb(), handle_conf(), handle_error_rsp(), handle_rsp(), handle_signed(), init_complete(), process_service_changed(), service_changed_cb(), service_changed_complete(), service_changed_register_cb(), and timeout_cb().

unsigned char util_get_dt	(	const char *	parent,
		const char *	name
	)

Helper for getting the dirent type in case readdir

Parameters

parent	prefix to build full path
name	suffix to builld full path

Returns

DT_UNKNOWN or DT_DIR if parent/name is a DIR

Definition at line 130 of file util.c.

uint8_t util_get_uid	(	unsigned int *	bitmap,
		uint8_t	max
	)

Helpers for bitfield operations

Find unique id in range from 1 to max but no bigger then sizeof(int) * 8. ffs() is used since it is POSIX standard

Parameters

bitmap	map of bits
max	max bit position

Returns

Definition at line 152 of file util.c.

void util_hexdump	(	const char	dir,
		const unsigned char *	buf,
		size_t	len,
		util_debug_func_t	function,
		void *	user_data
	)

hexadecimal dump utility: create the str hex string and then call function(str,user_data)

Parameters

dir	first char of str
buf	buffer to convert to hex (str)
len	size of buffer (should be less than or equal to 16)
function	function to call with (str,user_data)
user_data	pointer to pass to function

Definition at line 81 of file util.c.

References timeout_data::user_data.

Referenced by can_read_data(), and can_write_data().