| # This file is used to populate seccomp's allowlist policy in combination with SYSCALLS.TXT. | |
| # Note that the resultant policy is applied only to zygote spawned processes. | |
| # | |
| # This file is processed by a python script named genseccomp.py. | |
| # Syscalls needed to boot android | |
| pivot_root(const char*, const char*) lp64 | |
| ioprio_get(int, int) lp64 | |
| ioprio_set(int, int, int) lp64 | |
| # Syscalls used internally by bionic, but not exposed directly. | |
| gettid() all | |
| futex(int*, int, int, const timespec*, int*, int) all | |
| clone(int (*)(void*), void*, int, void*, ...) all | |
| sigreturn(unsigned long) lp32 | |
| rt_sigreturn(unsigned long) all | |
| rt_tgsigqueueinfo(pid_t, pid_t, int, siginfo_t*) all | |
| restart_syscall() all | |
| # The public API doesn't set errno, so we call this via inline assembler. | |
| riscv_hwprobe(riscv_hwprobe*, size_t, size_t, unsigned long*, unsigned) riscv64 | |
| # vfork is used by bionic (and java.lang.ProcessBuilder) on some | |
| # architectures. (The others use clone(2) directly instead.) | |
| vfork() arm,x86,x86_64 | |
| # Needed for performance tools. | |
| perf_event_open(perf_event_attr*, pid_t, int, int, unsigned long) all | |
| # Needed for strace. | |
| tkill(int, int) all | |
| # Needed for a CTS test of seccomp (b/34763393). | |
| seccomp(unsigned, unsigned, void*) all | |
| # TODO: remove these now we've updated the toolchain (http://b/229989971). | |
| open(const char*, int, ...) arm,x86,x86_64 | |
| stat64(const char*, stat64*) arm,x86 | |
| readlink(const char*, char*, size_t) arm,x86,x86_64 | |
| stat(const char*, stat*) arm,x86,x86_64 | |
| # | |
| # (Potentially) useful new syscalls which we don't yet use in bionic. | |
| # | |
| # Since Linux 2.5, not in glibc. | |
| io_setup(unsigned, aio_context_t*) all | |
| io_destroy(aio_context_t) all | |
| io_submit(aio_context_t, long, iocb**) all | |
| io_getevents(aio_context_t, long, long, io_event*, timespec*) all | |
| io_cancel(aio_context_t, iocb*, io_event*) all | |
| # Since Linux 3.19, not in glibc (and not really needed to implement fexecve). | |
| execveat(int, const char*, char* const*, char* const*, int) all | |
| # Since Linux 4.3, not in glibc. Probed for and conditionally used by ART. | |
| membarrier(int, int) all | |
| userfaultfd(int) all | |
| # Since Linux 5.1, not in glibc. Not used by bionic, and not likely ever | |
| # to be (because the last thing anyone needs is a new 32-bit ABI in the | |
| # 2020s!) but http://b/138781460 showed cuttlefish needed at least the | |
| # clock_gettime64 syscall. | |
| clock_gettime64(clockid_t, timespec64*) lp32 | |
| clock_settime64(clockid_t, const timespec64*) lp32 | |
| clock_adjtime64(clockid_t, timex64*) lp32 | |
| clock_getres_time64(clockid_t, timespec64*) lp32 | |
| clock_nanosleep_time64(clockid_t, int, const timespec64*, timespec*) lp32 | |
| timer_gettime64(__kernel_timer_t, itimerspec64*) lp32 | |
| timer_settime64(__kernel_timer_t, int, const itimerspec64*, itimerspec64*) lp32 | |
| timerfd_gettime64(int, itimerspec64*) lp32 | |
| timerfd_settime64(int, int, const itimerspec64*, itimerspec64*) lp32 | |
| utimensat_time64(int, const char*, const timespec64[2], int) lp32 | |
| pselect6_time64(int, fd_set*, fd_set*, timespec64*, void*) lp32 | |
| ppoll_time64(pollfd*, unsigned int, timespec64*, const sigset64_t*, size_t) lp32 | |
| recvmmsg_time64(int, mmsghdr*, unsigned int, int, const timespec64*) lp32 | |
| rt_sigtimedwait_time64(const sigset64_t*, siginfo_t*, const timespec64*, size_t) lp32 | |
| futex_time64(int*, int, int, const timespec64*, int*, int) lp32 | |
| sched_rr_get_interval_time64(pid_t, timespec64*) lp32 | |
| # Since Linux 5.3, not in glibc. Not used by bionic, but increasingly | |
| # likely to be useful as new features are added. In particular, cgroups | |
| # support seems potentially useful for Android (though the struct that | |
| # changes size over time is obviously problematic). | |
| clone3(clone_args*, size_t) all |