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libc: port FreeBSD string library routines

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Oh my fucking god this was by far the most awful
and boring and tedious day in my entire life.

Also, dear FreeBSD people: please don't sue me.
I tried really hard to comply with all the
copyright stuff, but it is absolutely possible i
made a mistake.  Just DM me and i'll do everything
in my power to fix it, even if that means
releasing entire portions of GayBSD under the BSD
license.  I don't care, i just want stuff to work.

(i'm including this message to use it as possible
evidence in case i get sued to show my good will)
This commit is contained in:
anna 2021-10-10 05:41:16 +02:00
parent 4679b7cee5
commit 0f9e9f91a6
Signed by: fef
GPG key ID: EC22E476DC2D3D84
87 changed files with 6662 additions and 235 deletions
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57
lib/c/string/strndup.c Normal file
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@ -0,0 +1,57 @@
/* See the end of this file for copyright and license terms. */
#include <gay/mm.h>
#include <gay/types.h>
#define _POSIX_C_SOURCE 200809L
#include <string.h>
char *strndup(const char *str, usize maxlen)
{
char *copy;
usize len;
len = strnlen(str, maxlen);
copy = kmalloc(len + 1, MM_KERNEL);
if (copy != NULL) {
memcpy(copy, str, len);
copy[len] = '\0';
}
return copy;
}
/*
* This file is part of GayBSD.
* Copyright (c) 2021 fef <owo@fef.moe>.
*
* GayBSD is nonviolent software: you may only use, redistribute, and/or
* modify it under the terms of the Cooperative Nonviolent Public License
* (CNPL) as found in the LICENSE file in the source code root directory
* or at <https://git.pixie.town/thufie/npl-builder>; either version 7
* of the license, or (at your option) any later version.
*
* GayBSD comes with ABSOLUTELY NO WARRANTY, to the extent
* permitted by applicable law. See the CNPL for details.
*
* ==========================================================================
*
* This file is derived from FreeBSD source code.
*
* Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $OpenBSD: strndup.c,v 1.1 2010/05/18 22:24:55 tedu Exp $
* $FreeBSD$
*/