1*ec63e07aSXin Li // Copyright 2019 Google LLC 2*ec63e07aSXin Li // 3*ec63e07aSXin Li // Licensed under the Apache License, Version 2.0 (the "License"); 4*ec63e07aSXin Li // you may not use this file except in compliance with the License. 5*ec63e07aSXin Li // You may obtain a copy of the License at 6*ec63e07aSXin Li // 7*ec63e07aSXin Li // https://www.apache.org/licenses/LICENSE-2.0 8*ec63e07aSXin Li // 9*ec63e07aSXin Li // Unless required by applicable law or agreed to in writing, software 10*ec63e07aSXin Li // distributed under the License is distributed on an "AS IS" BASIS, 11*ec63e07aSXin Li // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12*ec63e07aSXin Li // See the License for the specific language governing permissions and 13*ec63e07aSXin Li // limitations under the License. 14*ec63e07aSXin Li 15*ec63e07aSXin Li // The sandbox2::Syscalls class defines mostly static helper methods which 16*ec63e07aSXin Li // are used to analyze the status of the sandboxed process. 17*ec63e07aSXin Li 18*ec63e07aSXin Li #ifndef SANDBOXED_API_SANDBOX2_SYSCALL_H__ 19*ec63e07aSXin Li #define SANDBOXED_API_SANDBOX2_SYSCALL_H__ 20*ec63e07aSXin Li 21*ec63e07aSXin Li #include <sys/types.h> 22*ec63e07aSXin Li 23*ec63e07aSXin Li #include <array> 24*ec63e07aSXin Li #include <cstddef> 25*ec63e07aSXin Li #include <cstdint> 26*ec63e07aSXin Li #include <string> 27*ec63e07aSXin Li #include <vector> 28*ec63e07aSXin Li 29*ec63e07aSXin Li #include "sandboxed_api/config.h" // IWYU pragma: export 30*ec63e07aSXin Li 31*ec63e07aSXin Li namespace sandbox2 { 32*ec63e07aSXin Li 33*ec63e07aSXin Li class Syscall { 34*ec63e07aSXin Li public: 35*ec63e07aSXin Li // Maximum number of syscall arguments 36*ec63e07aSXin Li static constexpr size_t kMaxArgs = 6; 37*ec63e07aSXin Li using Args = std::array<uint64_t, kMaxArgs>; 38*ec63e07aSXin Li 39*ec63e07aSXin Li // Returns the host architecture, according to CpuArch. GetHostArch()40*ec63e07aSXin Li static constexpr sapi::cpu::Architecture GetHostArch() { 41*ec63e07aSXin Li return sapi::host_cpu::Architecture(); 42*ec63e07aSXin Li } 43*ec63e07aSXin Li 44*ec63e07aSXin Li // Returns the host architecture, according to <linux/audit.h>. 45*ec63e07aSXin Li static uint32_t GetHostAuditArch(); 46*ec63e07aSXin Li 47*ec63e07aSXin Li // Returns a description of the architecture. 48*ec63e07aSXin Li static std::string GetArchDescription(sapi::cpu::Architecture arch); 49*ec63e07aSXin Li 50*ec63e07aSXin Li Syscall() = default; 51*ec63e07aSXin Li Syscall(sapi::cpu::Architecture arch, uint64_t nr, Args args = {}) arch_(arch)52*ec63e07aSXin Li : arch_(arch), nr_(nr), args_(args) {} 53*ec63e07aSXin Li pid()54*ec63e07aSXin Li pid_t pid() const { return pid_; } nr()55*ec63e07aSXin Li uint64_t nr() const { return nr_; } arch()56*ec63e07aSXin Li sapi::cpu::Architecture arch() const { return arch_; } args()57*ec63e07aSXin Li const Args& args() const { return args_; } stack_pointer()58*ec63e07aSXin Li uint64_t stack_pointer() const { return sp_; } instruction_pointer()59*ec63e07aSXin Li uint64_t instruction_pointer() const { return ip_; } 60*ec63e07aSXin Li 61*ec63e07aSXin Li std::string GetName() const; 62*ec63e07aSXin Li 63*ec63e07aSXin Li std::vector<std::string> GetArgumentsDescription() const; 64*ec63e07aSXin Li std::string GetDescription() const; 65*ec63e07aSXin Li 66*ec63e07aSXin Li private: 67*ec63e07aSXin Li friend class Regs; 68*ec63e07aSXin Li friend class UnotifyMonitor; 69*ec63e07aSXin Li Syscall(pid_t pid)70*ec63e07aSXin Li explicit Syscall(pid_t pid) : pid_(pid) {} Syscall(sapi::cpu::Architecture arch,uint64_t nr,Args args,pid_t pid,uint64_t sp,uint64_t ip)71*ec63e07aSXin Li Syscall(sapi::cpu::Architecture arch, uint64_t nr, Args args, pid_t pid, 72*ec63e07aSXin Li uint64_t sp, uint64_t ip) 73*ec63e07aSXin Li : arch_(arch), nr_(nr), args_(args), pid_(pid), sp_(sp), ip_(ip) {} 74*ec63e07aSXin Li 75*ec63e07aSXin Li sapi::cpu::Architecture arch_ = sapi::cpu::kUnknown; 76*ec63e07aSXin Li uint64_t nr_ = -1; 77*ec63e07aSXin Li Args args_ = {}; 78*ec63e07aSXin Li pid_t pid_ = -1; 79*ec63e07aSXin Li uint64_t sp_ = 0; 80*ec63e07aSXin Li uint64_t ip_ = 0; 81*ec63e07aSXin Li }; 82*ec63e07aSXin Li 83*ec63e07aSXin Li } // namespace sandbox2 84*ec63e07aSXin Li 85*ec63e07aSXin Li #endif // SANDBOXED_API_SANDBOX2_SYSCALL_H__ 86