M7350/external/compat-wireless/compat/compat-2.6.25.c
2024-09-09 08:57:42 +00:00

98 lines
2.9 KiB
C

/*
* Copyright 2007-2010 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Compatibility file for Linux wireless for kernels 2.6.25.
*/
#include <linux/miscdevice.h>
/**
* The following things are out of ./lib/vsprintf.c
* The new iwlwifi driver is using them.
*/
/**
* strict_strtoul - convert a string to an unsigned long strictly
* @cp: The string to be converted
* @base: The number base to use
* @res: The converted result value
*
* strict_strtoul converts a string to an unsigned long only if the
* string is really an unsigned long string, any string containing
* any invalid char at the tail will be rejected and -EINVAL is returned,
* only a newline char at the tail is acceptible because people generally
* change a module parameter in the following way:
*
* echo 1024 > /sys/module/e1000/parameters/copybreak
*
* echo will append a newline to the tail.
*
* It returns 0 if conversion is successful and *res is set to the converted
* value, otherwise it returns -EINVAL and *res is set to 0.
*
* simple_strtoul just ignores the successive invalid characters and
* return the converted value of prefix part of the string.
*/
int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
/**
* strict_strtol - convert a string to a long strictly
* @cp: The string to be converted
* @base: The number base to use
* @res: The converted result value
*
* strict_strtol is similiar to strict_strtoul, but it allows the first
* character of a string is '-'.
*
* It returns 0 if conversion is successful and *res is set to the converted
* value, otherwise it returns -EINVAL and *res is set to 0.
*/
int strict_strtol(const char *cp, unsigned int base, long *res);
#define define_strict_strtoux(type, valtype) \
int strict_strtou##type(const char *cp, unsigned int base, valtype *res)\
{ \
char *tail; \
valtype val; \
size_t len; \
\
*res = 0; \
len = strlen(cp); \
if (len == 0) \
return -EINVAL; \
\
val = simple_strtou##type(cp, &tail, base); \
if ((*tail == '\0') || \
((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) {\
*res = val; \
return 0; \
} \
\
return -EINVAL; \
} \
#define define_strict_strtox(type, valtype) \
int strict_strto##type(const char *cp, unsigned int base, valtype *res) \
{ \
int ret; \
if (*cp == '-') { \
ret = strict_strtou##type(cp+1, base, res); \
if (!ret) \
*res = -(*res); \
} else \
ret = strict_strtou##type(cp, base, res); \
\
return ret; \
} \
define_strict_strtoux(l, unsigned long)
define_strict_strtox(l, long)
EXPORT_SYMBOL(strict_strtoul);
EXPORT_SYMBOL(strict_strtol);