redhat man page for strnlen

STRNLEN(3)						     Linux Programmer's Manual							STRNLEN(3)

NAME
       strnlen - determine the length of a fixed-size string

SYNOPSIS
       #include <string.h>

       size_t strnlen(const char *s, size_t maxlen);

DESCRIPTION
       The  strnlen  function returns the number of characters in the string pointed to by s, not including the terminating '' character, but at
       most maxlen. In doing this, strnlen looks only at the first maxlen characters at s and never beyond s+maxlen.

RETURN VALUE
       The strnlen function returns strlen(s), if that is less than maxlen, or maxlen if there is no '' character among the first maxlen charac-
       ters pointed to by s.

CONFORMING TO
       This function is a GNU extension.

SEE ALSO
       strlen(3)

GNU
								    1999-07-25								STRNLEN(3)