1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_ 6 #define SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_ 7 8 #include "base/basictypes.h" 9 #include "build/build_config.h" 10 11 // The handlers are suitable for use in Trap() error codes. They are 12 // guaranteed to be async-signal safe. 13 // See sandbox/linux/seccomp-bpf/trap.h to see how they work. 14 15 namespace sandbox { 16 17 struct arch_seccomp_data; 18 19 // This handler will crash the currently running process. The crashing address 20 // will be the number of the current system call, extracted from |args|. 21 // This handler will also print to stderr the number of the crashing syscall. 22 intptr_t CrashSIGSYS_Handler(const struct arch_seccomp_data& args, void* aux); 23 24 // The following three handlers are suitable to report failures with the 25 // clone(), prctl() and ioctl() system calls respectively. 26 27 // The crashing address will be (clone_flags & 0xFFFFFF), where clone_flags is 28 // the clone(2) argument, extracted from |args|. 29 intptr_t SIGSYSCloneFailure(const struct arch_seccomp_data& args, void* aux); 30 // The crashing address will be (option & 0xFFF), where option is the prctl(2) 31 // argument. 32 intptr_t SIGSYSPrctlFailure(const struct arch_seccomp_data& args, void* aux); 33 // The crashing address will be request & 0xFFFF, where request is the ioctl(2) 34 // argument. 35 intptr_t SIGSYSIoctlFailure(const struct arch_seccomp_data& args, void* aux); 36 37 } // namespace sandbox. 38 39 #endif // SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_ 40
