libnutclient_variables3
Variable related functions in network ups tools high-level client access library
Usage
#include <nutclient.h>
typedef void* NUTCLIENT_t;
typedef char** strarr;
strarr nutclient_get_device_variables(NUTCLIENT_t client,
const char* dev);
strarr nutclient_get_device_rw_variables(NUTCLIENT_t client,
const char* dev);
int nutclient_has_device_variable(NUTCLIENT_t client,
const char* dev, const char* var);
char* nutclient_get_device_variable_description(NUTCLIENT_t client,
const char* dev, const char* var);
strarr nutclient_get_device_variable_values(NUTCLIENT_t client,
const char* dev, const char* var);
void nutclient_set_device_variable_value(NUTCLIENT_t client,
const char* dev, const char* var, const char* value);
void nutclient_set_device_variable_values(NUTCLIENT_t client,
const char* dev, const char* var, const strarr values);
Overview
These functions allow to manage variables of devices.
• The nutclient_get_device_variables() function retrieves the list of variables names for a device.
The returned strarr must be freed by strarr_free (see libnutclient_general(3)).
• The nutclient_get_device_rw_variables function retrieves the list of read-write variables names for a device.
The returned strarr must be freed by strarr_free (see libnutclient_general(3)).
• The nutclient_has_device_variable function tests if the specified variable is supported by the device.
Return 1 if supported and 0 if not.
• The nutclient_get_device_variable_description function retrieves the variable description, if any.
The returned string must be freed by free(3).
• The nutclient_get_device_variable_values returns variable values (generally only one).
The returned strarr must be freed by strarr_free (see libnutclient_general(3)).
• The nutclient_set_device_variable_value intends to set the value of the specified variable.
• The nutclient_set_device_variable_values intends to set multiple values of the specified variable.
Common arguments:
• dev is the device name.
• var is the variable name.
• value is the variable value.
• values is the variable array of values.
Releases
6 releases since Debian 9 (Stretch); the text changed 3 times.