nvram.c File Reference

Implements the functions: nvramInit, nvramGet Functions to access the nvram settings from kernel space. More...

#include <kernel.h>
#include <memory.h>
#include <nvram.h>
#include <string.h>
#include <stdlib.h>

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Functions
local	nvramHash (char *p)
	Given an input string, this will calculate a simple hash between 0 and NVRAM_PAIRS-1 (inclusive).
local	nvramInsert (struct nvram_tuple *tuple)
	Insert a tuple into the nvram_tuples table.
devcall	nvramInit ()
	Initialize the nvram variable structures for editing.
char *	nvramGet (char *name)
	Find the value of a variable.
Variables
struct nvram_header *	nvram_header = NULL
	header data for nvram
struct nvram_tuple *	nvram_tuples [NVRAM_PAIRS]
	array of pointers to tuples

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Detailed Description

Implements the functions: nvramInit, nvramGet Functions to access the nvram settings from kernel space.

Id

nvram.c 1485 2008-08-15 19:44:02Z brylow

Definition in file nvram.c.

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Function Documentation

char* nvramGet

(

char *

name

)

Find the value of a variable.

Parameters:

*name

name of variable to find

Returns:

pointer to beginning of value

Definition at line 117 of file nvram.c.

References NULL, nvram_tuples, nvramHash(), nvramInit(), OK, and strlen().

Referenced by etherInit(), and xsh_nvram().

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local nvramHash

(

char *

p

)

Given an input string, this will calculate a simple hash between 0 and NVRAM_PAIRS-1 (inclusive).

Parameters:

*p

null or '=' terminated string

Returns:

value of hashed string

Definition at line 145 of file nvram.c.

References NVRAM_PAIRS.

Referenced by nvramGet(), and nvramInsert().

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devcall nvramInit

(

void

)

Initialize the nvram variable structures for editing.

Returns:

OK on success, SYSERR on failure

Definition at line 26 of file nvram.c.

References memcpy(), memget(), NULL, nvram_header, NVRAM_LOCATION, NVRAM_MAGIC, NVRAM_PAIRS, nvram_tuples, nvramInsert(), OK, strlen(), and SYSERR.

Referenced by nvramGet(), sysinit(), and xsh_nvram().

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local nvramInsert

(

struct nvram_tuple *

tuple

)

Insert a tuple into the nvram_tuples table.

Parameters:

*tuple

pointer to tuple to add (should be memory address)

Returns:

OK on success

Definition at line 83 of file nvram.c.

References NULL, nvram_tuples, nvramHash(), and OK.

Referenced by nvramInit().

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