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e3a6e85d67
Add function __inet_pton_chk which calls __chk_fail when the size of argument dst is too small. inet_pton is redirected to __inet_pton_chk or __inet_pton_warn when _FORTIFY_SOURCE is > 0. Also add tests to debug/tst-fortify.c, update the abilist with __inet_pton_chk and mention inet_pton fortification in maint.texi. Co-authored-by: Frédéric Bérat <fberat@redhat.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
31 lines
1.1 KiB
C
31 lines
1.1 KiB
C
/* Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <arpa/inet.h>
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#include <stdio.h>
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int
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__inet_pton_chk (int af, const char *src, void *dst, size_t dst_size)
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{
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if ((af == AF_INET && dst_size < 4)
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|| (af == AF_INET6 && dst_size < 16))
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__chk_fail ();
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return __inet_pton (af, src, dst);
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}
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libc_hidden_def (__inet_pton_chk)
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