strnlen_user(9)
NAME
strnlen_user - Get the size of a string in user space.
SYNOPSIS
long strnlen_user(const char __user * s, long n);
ARGUMENTS
- s
- The string to measure.
- n
- The maximum valid length
DESCRIPTION
Get the size of a NUL-terminated string in user space.
Returns the size of the string INCLUDING the terminating NUL. On
exception, returns 0. If the string is too long, returns a value
greater than n.