1STRNLEN(3)                 Linux Programmer's Manual                STRNLEN(3)
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NAME

6       strnlen - determine the length of a fixed-size string
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SYNOPSIS

9       #define _GNU_SOURCE
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11       #include <string.h>
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13       size_t strnlen(const char *s, size_t maxlen);
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DESCRIPTION

16       The  strnlen()  function returns the number of characters in the string
17       pointed to by s, not including the terminating '\0' character,  but  at
18       most  maxlen.   In doing this, strnlen() looks only at the first maxlen
19       characters at s and never beyond s+maxlen.
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RETURN VALUE

22       The strnlen() function returns strlen(s), if that is less than  maxlen,
23       or  maxlen if there is no '\0' character among the first maxlen charac‐
24       ters pointed to by s.
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CONFORMING TO

27       This function is a GNU extension.
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SEE ALSO

30       strlen(3), feature_test_macros(7)
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COLOPHON

33       This page is part of release 3.25 of the Linux  man-pages  project.   A
34       description  of  the project, and information about reporting bugs, can
35       be found at http://www.kernel.org/doc/man-pages/.
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39GNU                               1999-07-25                        STRNLEN(3)
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