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man: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);
 Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
     strnlen():
         Since glibc 2.10:
             _POSIX_C_SOURCE >= 200809L
         Before glibc 2.10:
             _GNU_SOURCE

DESCRIPTION

     The  strnlen()  function returns the number of characters in the string
     pointed to by s, excluding the terminating null  byte  ('\0'),  but  at
     most  maxlen.   In doing this, strnlen() looks only at the first maxlen
     characters in the string pointed to by 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 null terminating ('\0') among the first maxlen
     characters pointed to by s.

ATTRIBUTES

     For  an  explanation  of  the  terms  used   in   this   section,   see
     attributes(7).
     +----------+---------------+---------+
     |Interface | Attribute     | Value   |
     +----------+---------------+---------+
     |strnlen() | Thread safety | MT-Safe |
     +----------+---------------+---------+

CONFORMING TO

     POSIX.1-2008.

SEE ALSO

     strlen(3)

COLOPHON

     This  page  is  part of release 4.16 of the Linux man-pages project.  A
     description of the project, information about reporting bugs,  and  the
     latest     version     of     this    page,    can    be    found    at
     https://www.kernel.org/doc/man-pages/.

GNU 2016-03-15 STRNLEN(3)

/data/webs/external/dokuwiki/data/pages/man/strnlen.txt · Last modified: 2019/05/17 09:32 by 127.0.0.1

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