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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "berberis/base/prctl_helpers.h"
#include <sys/prctl.h>
// These are not defined in our glibc, but are supported in kernel since 5.17 (but not necessarily
// enabled). It's always enabled in Android kernerls, but otherwise on Linux may be disabled
// depending on CONFIG_ANON_VMA_NAME boot config flag. So the caller needs to check the result to
// see if it actually worked.
#if defined(__GLIBC__)
#define PR_SET_VMA 0x53564d41
#define PR_SET_VMA_ANON_NAME 0
#endif
namespace berberis {
int SetVmaAnonName(void* addr, size_t size, const char* name) {
return prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, addr, size, name);
}
} // namespace berberis
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