NAME

       stpncpy - copy a fixed-size string, returning a pointer to its end

SYNOPSIS

       #include <string.h>

       char *stpncpy(char *restrict dest, const char *restrict src, size_t n);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       stpncpy():
           Since glibc 2.10:
               _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:
               _GNU_SOURCE

DESCRIPTION

       The  stpncpy()  function  copies  at  most n characters from the string pointed to by src,
       including the terminating null byte ('\0'), to the array pointed to by  dest.   Exactly  n
       characters  are  written  at  dest.   If  the  length  strlen(src)  is smaller than n, the
       remaining characters in the array pointed to by dest are filled with null bytes ('\0'), If
       the  length  strlen(src) is greater than or equal to n, the string pointed to by dest will
       not be null-terminated.

       The strings may not overlap.

       The programmer must ensure that there is room for at least n characters at dest.

RETURN VALUE

       stpncpy() returns a pointer to the terminating null byte in dest, or, if dest is not null-
       terminated, dest+n.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       ┌───────────────────────────────────────────────────────────────┬───────────────┬─────────┐
       │Interface                                                      │ Attribute     │ Value   │
       ├───────────────────────────────────────────────────────────────┼───────────────┼─────────┤
       │stpncpy()                                                      │ Thread safety │ MT-Safe │
       └───────────────────────────────────────────────────────────────┴───────────────┴─────────┘

CONFORMING TO

       This  function  was added to POSIX.1-2008.  Before that, it was a GNU extension.  It first
       appeared in version 1.07 of the GNU C library in 1993.

SEE ALSO

       strncpy(3), wcpncpy(3)

COLOPHON

       This page is part of release 5.13 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/.