NAME¶

strict_strtoul - convert a string to an unsigned long strictly

SYNOPSIS¶

int strict_strtoul(const char * cp, unsigned int base, unsigned long * res);

ARGUMENTS¶

cp

base

res

DESCRIPTION¶

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.

COPYRIGHT¶