device.c File Reference

#include <utils/device.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>

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Functions
uint8_t	device_exists (const char *device_name)
	Does a device file exist? More...
int32_t	get_major (const char *device)
	Gets the device major id from /proc/devices. More...
int32_t	get_param (const char *filename, const char *parameter)
	Gets a parameter from a driver param file. More...

Function Documentation

device_exists()

uint8_t device_exists

(

const char *

device_name

)

Does a device file exist?

Possible Failures:

Invalid File - The only way this function can fail is by not having the file in question exist.

Definition at line 30 of file device.c.

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get_major()

int32_t get_major

(

const char *

device

)

Gets the device major id from /proc/devices.

Possible Failures:

Invalid Device - In the case of an invalid device being passed it will return -1.

Device List Not Found - Device list is not found, this can occur on unsupported operating systems.

Definition at line 42 of file device.c.

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get_param()

int32_t get_param	(	const char *	filename,
		const char *	parameter
	)

Gets a parameter from a driver param file.

Possible Failures:

Param File Not Found - Check if the device driver is loaded correctly.

Definition at line 71 of file device.c.

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