mirror of
https://github.com/chromium/crashpad.git
synced 2025-01-15 10:07:56 +08:00
96dc950eaf
This wraps mmap(), munmap(), and mprotect(). Bug: crashpad:30 Test: crashpad_util_test ScopedMmap.* Change-Id: If14363dfd00e314482cc91e53c7f4e3df737b0d3 Reviewed-on: https://chromium-review.googlesource.com/461361 Reviewed-by: Joshua Peraza <jperaza@chromium.org>
68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
// Copyright 2017 The Crashpad Authors. All rights reserved.
|
|
//
|
|
// 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 "util/posix/scoped_mmap.h"
|
|
|
|
#include "base/logging.h"
|
|
|
|
namespace crashpad {
|
|
|
|
ScopedMmap::ScopedMmap() {}
|
|
|
|
ScopedMmap::~ScopedMmap() {
|
|
Reset();
|
|
}
|
|
|
|
void ScopedMmap::Reset() {
|
|
ResetAddrLen(MAP_FAILED, 0);
|
|
}
|
|
|
|
void ScopedMmap::ResetAddrLen(void* addr, size_t len) {
|
|
if (is_valid() && munmap(addr_, len_) != 0) {
|
|
LOG(ERROR) << "munmap";
|
|
}
|
|
|
|
addr_ = addr;
|
|
len_ = len;
|
|
}
|
|
|
|
bool ScopedMmap::ResetMmap(void* addr,
|
|
size_t len,
|
|
int prot,
|
|
int flags,
|
|
int fd,
|
|
off_t offset) {
|
|
Reset();
|
|
|
|
void* new_addr = mmap(addr, len, prot, flags, fd, offset);
|
|
if (new_addr == MAP_FAILED) {
|
|
LOG(ERROR) << "mmap";
|
|
return false;
|
|
}
|
|
|
|
ResetAddrLen(new_addr, len);
|
|
return true;
|
|
}
|
|
|
|
bool ScopedMmap::Mprotect(int prot) {
|
|
if (mprotect(addr_, len_, prot) < 0) {
|
|
LOG(ERROR) << "mprotect";
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
} // namespace crashpad
|