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



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

SYNOPSIS
       #define _GNU_SOURCE

       #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 '\0'
       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 '\0' character among the
       first maxlen characters pointed to by s.

CONFORMING TO
       This function is a GNU extension.

SEE ALSO
       strlen(3), feature_test_macros(7)

COLOPHON
       This page is part of release 3.25 of the Linux man-pages project.  A description of the project,  and  information  about
       reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



GNU                                                        1999-07-25                                                 STRNLEN(3)