mirror of
https://github.com/google/sandboxed-api.git
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92 lines
2.5 KiB
C++
92 lines
2.5 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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// Implementation of the sandbox2::Syscall class.
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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/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(CpuArch arch) {
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switch (arch) {
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case kX86_64:
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return "[X86-64]";
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case kX86_32:
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return "[X86-32]";
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case kPPC_64:
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return "[PPC-64]";
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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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Syscall::CpuArch Syscall::GetHostArch() {
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#if defined(__x86_64__)
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return kX86_64;
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#elif defined(__i386__)
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return kX86_32;
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#elif defined(__powerpc64__)
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return kPPC_64;
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#endif
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}
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uint32_t Syscall::GetHostAuditArch() {
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#if defined(__x86_64__)
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return AUDIT_ARCH_X86_64;
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#elif defined(__i386__)
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return AUDIT_ARCH_I386;
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#elif defined(__powerpc64__)
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return AUDIT_ARCH_PPC64LE;
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#endif
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}
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std::string Syscall::GetName() const {
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absl::string_view name = SyscallTable::get(arch_).GetName(nr_);
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if (name.empty()) {
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return absl::StrFormat("UNKNOWN[%d/0x%x]", nr_, nr_);
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}
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return std::string(name);
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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 auto& 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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