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dbaf95c724
This change should make it less confusing where utility code comes from. Having it in two places made sense when we were debating whether to publish Sandbox2 separately, but not any longer. Follow-up changes will move `sandbox2/util.h` and rename the remaining `sandbox2/util` folder. PiperOrigin-RevId: 351601640 Change-Id: I6256845261f610e590c25e2c59851cc51da2d778
93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
// Copyright 2019 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "sandboxed_api/sandbox2/syscall.h"
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#include <linux/audit.h>
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#include <linux/elf-em.h>
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#include <climits>
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#include <csignal>
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#include <cstring>
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#include <string>
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#include <glog/logging.h>
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#include "absl/strings/str_format.h"
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#include "absl/strings/str_join.h"
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#include "sandboxed_api/config.h"
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#include "sandboxed_api/sandbox2/syscall_defs.h"
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#ifndef AUDIT_ARCH_PPC64LE
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#define AUDIT_ARCH_PPC64LE (EM_PPC64 | __AUDIT_ARCH_64BIT | __AUDIT_ARCH_LE)
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#endif
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namespace sandbox2 {
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std::string Syscall::GetArchDescription(sapi::cpu::Architecture arch) {
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switch (arch) {
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case sapi::cpu::kX8664:
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return "[X86-64]";
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case sapi::cpu::kX86:
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return "[X86-32]";
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case sapi::cpu::kPPC64LE:
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return "[PPC-64]";
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case sapi::cpu::kArm64:
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return "[Arm-64]";
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case sapi::cpu::kArm:
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return "[Arm-32]";
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default:
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LOG(ERROR) << "Unknown CPU architecture: " << arch;
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return absl::StrFormat("[UNKNOWN_ARCH:%d]", arch);
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}
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}
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uint32_t Syscall::GetHostAuditArch() {
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switch (sapi::host_cpu::Architecture()) {
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case sapi::cpu::kX8664:
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return AUDIT_ARCH_X86_64;
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case sapi::cpu::kPPC64LE:
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return AUDIT_ARCH_PPC64LE;
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case sapi::cpu::kArm64:
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return AUDIT_ARCH_AARCH64;
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case sapi::cpu::kArm:
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return AUDIT_ARCH_ARM;
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default:
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// The static_assert() in config.h should prevent us from ever getting
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// here.
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return 0; // Not reached
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}
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}
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std::string Syscall::GetName() const {
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if (absl::string_view name = SyscallTable::get(arch_).GetName(nr_);
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!name.empty()) {
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return std::string(name);
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}
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return absl::StrFormat("UNKNOWN[%d/0x%x]", nr_, nr_);
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}
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std::vector<std::string> Syscall::GetArgumentsDescription() const {
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return SyscallTable::get(arch_).GetArgumentsDescription(nr_, args_.data(),
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pid_);
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}
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std::string Syscall::GetDescription() const {
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const std::string arch = GetArchDescription(arch_);
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const std::string args = absl::StrJoin(GetArgumentsDescription(), ", ");
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return absl::StrFormat("%s %s [%d](%s) IP: %#x, STACK: %#x", arch, GetName(),
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nr_, args, ip_, sp_);
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}
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} // namespace sandbox2
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