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#ifndef SANDBOXED_API_SANDBOX2_SYSCALL_DEFS_H_
#define SANDBOXED_API_SANDBOX2_SYSCALL_DEFS_H_
#include <sys/types.h>
#include <array>
#include <cstdint>
#include <string>
#include <vector>
#include "absl/status/statusor.h"
#include "absl/strings/string_view.h"
#include "absl/types/span.h"
#include "sandboxed_api/config.h"
#include "sandboxed_api/sandbox2/syscall.h"
namespace sandbox2 {
namespace syscalls {
constexpr int kMaxArgs = 6;
// Type of a given syscall argument. Used with argument conversion routines.
enum ArgType {
kGen = 1,
kInt,
kPath,
kHex,
kOct,
kSocketCall,
kSocketCallPtr,
kSignal,
kString,
kAddressFamily,
kSockaddr,
kSockmsghdr,
kCloneFlag,
};
} // namespace syscalls
class SyscallTable {
public:
// Single syscall definition
struct Entry {
// Returns the number of arguments which given syscall takes.
int GetNumArgs() const {
if (num_args < 0 || num_args > syscalls::kMaxArgs) {
return syscalls::kMaxArgs;
}
return num_args;
}
static std::string GetArgumentDescription(uint64_t value,
syscalls::ArgType type,
pid_t pid);
static constexpr bool BySyscallNr(const SyscallTable::Entry& a,
const SyscallTable::Entry& b) {
return a.nr < b.nr;
}
int nr;
absl::string_view name;
int num_args;
std::array<syscalls::ArgType, syscalls::kMaxArgs> arg_types;
};
// Returns the syscall table for the architecture.
static SyscallTable get(sapi::cpu::Architecture arch);
int size() { return data_.size(); }
absl::string_view GetName(int syscall) const;
std::vector<std::string> GetArgumentsDescription(int syscall,
const uint64_t values[],
pid_t pid) const;
absl::StatusOr<Entry> GetEntry(int syscall) const;
// Returns the first entry matching the provided name.
absl::StatusOr<Entry> GetEntry(absl::string_view name) const;
absl::Span<const Entry> GetEntries() const { return data_; }
private:
constexpr SyscallTable() = default;
explicit constexpr SyscallTable(absl::Span<const Entry> data) : data_(data) {}
const absl::Span<const Entry> data_;
};
} // namespace sandbox2
#endif // SANDBOXED_API_SANDBOX2_SYSCALL_DEFS_H_
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