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

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

9       #include <string.h>
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11       char *stpncpy(char *dest, const char *src, size_t n);
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13   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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15       stpncpy():
16           Since glibc 2.10:
17               _POSIX_C_SOURCE >= 200809L
18           Before glibc 2.10:
19               _GNU_SOURCE
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DESCRIPTION

22       The  stpncpy()  function  copies  at  most n characters from the string
23       pointed to by src, including the terminating null byte ('\0'),  to  the
24       array  pointed  to  by dest.  Exactly n characters are written at dest.
25       If the length strlen(src) is smaller than n, the  remaining  characters
26       in  the  array pointed to by dest are filled with null bytes ('\0'), If
27       the length strlen(src) is greater  than  or  equal  to  n,  the  string
28       pointed to by dest will not be null-terminated.
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30       The strings may not overlap.
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32       The programmer must ensure that there is room for at least n characters
33       at dest.
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RETURN VALUE

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

40       For   an   explanation   of   the  terms  used  in  this  section,  see
41       attributes(7).
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43       ┌──────────┬───────────────┬─────────┐
44       │Interface │ Attribute     │ Value   │
45       ├──────────┼───────────────┼─────────┤
46       │stpncpy() │ Thread safety │ MT-Safe │
47       └──────────┴───────────────┴─────────┘

CONFORMING TO

49       This function was added to POSIX.1-2008.  Before that,  it  was  a  GNU
50       extension.   It  first appeared in version 1.07 of the GNU C library in
51       1993.
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SEE ALSO

54       strncpy(3), wcpncpy(3)
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COLOPHON

57       This page is part of release 5.02 of the Linux  man-pages  project.   A
58       description  of  the project, information about reporting bugs, and the
59       latest    version    of    this    page,    can     be     found     at
60       https://www.kernel.org/doc/man-pages/.
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64GNU                               2019-03-06                        STPNCPY(3)
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