NAME
kstrtobool - convert common user inputs into boolean values
SYNOPSIS
int kstrtobool(const char * s, bool * res);
ARGUMENTS
s
input string
res
result
DESCRIPTION
This routine returns 0 iff the first character is one of 'Yy1Nn0', or [oO][NnFf] for “on” and “off”. Otherwise it will return -EINVAL. Value pointed to by res is updated upon finding a match.