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



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

SYNOPSIS
       #define _GNU_SOURCE

       #include <&lt;string.h>&gt;

       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 charac-
       ters 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 3.05 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)