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03a50d8f7d
Panic if memset_s() fails. Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz> Reviewed-by: Andreas Schneider <asn@samba.org> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/*
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* Copyright (c) 2019 Andreas Schneider <asn@samba.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "replace.h"
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#include <talloc.h>
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#include "lib/util/fault.h"
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#include "talloc_keep_secret.h"
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static int talloc_keep_secret_destructor(void *ptr)
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{
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int ret;
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size_t size = talloc_get_size(ptr);
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if (unlikely(size == 0)) {
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return 0;
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}
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ret = memset_s(ptr, size, 0, size);
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if (unlikely(ret != 0)) {
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char *msg = NULL;
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int ret2;
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ret2 = asprintf(&msg,
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"talloc_keep_secret_destructor: memset_s() failed: %s",
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strerror(ret));
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if (ret2 != -1) {
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smb_panic(msg);
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} else {
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smb_panic("talloc_keep_secret_destructor: memset_s() failed");
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}
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}
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return 0;
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}
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void _talloc_keep_secret(void *ptr, const char *name)
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{
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size_t size;
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if (unlikely(ptr == NULL)) {
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#ifdef DEVELOPER
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smb_panic("Invalid talloc pointer");
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#endif
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return;
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}
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size = talloc_get_size(ptr);
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if (unlikely(size == 0)) {
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return;
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}
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talloc_set_name_const(ptr, name);
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talloc_set_destructor(ptr, talloc_keep_secret_destructor);
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}
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