1# This file is used to populate seccomp's allowlist policy in combination with SYSCALLS.TXT. 2# Note that the resultant policy is applied only to zygote spawned processes. 3# 4# This file is processed by a python script named genseccomp.py. 5 6# Syscalls needed to boot android 7int pivot_root(const char*, const char*) lp64 8int ioprio_get(int, int) lp64 9int ioprio_set(int, int, int) lp64 10 11# Syscalls used internally by bionic, but not exposed directly. 12pid_t gettid() all 13int futex(int*, int, int, const timespec*, int*, int) all 14int clone(int (*)(void*), void*, int, void*, ...) all 15int sigreturn(unsigned long) lp32 16int rt_sigreturn(unsigned long) all 17int rt_tgsigqueueinfo(pid_t, pid_t, int, siginfo_t*) all 18int restart_syscall() all 19 20# vfork is used by bionic (and java.lang.ProcessBuilder) on some 21# architectures. (The others use clone(2) directly instead.) 22pid_t vfork() arm,x86,x86_64 23 24# Needed for performance tools. 25int perf_event_open(perf_event_attr*, pid_t, int, int, unsigned long) all 26 27# Needed for strace. 28int tkill(int, int) all 29 30# Needed for a CTS test of seccomp (b/34763393). 31int seccomp(unsigned, unsigned, void*) all 32 33# TODO: remove these now we've updated the toolchain (http://b/229989971). 34int open(const char*, int, ...) arm,x86,x86_64 35int stat64(const char*, stat64*) arm,x86 36ssize_t readlink(const char*, char*, size_t) arm,x86,x86_64 37int stat(const char*, stat*) arm,x86,x86_64 38 39# 40# (Potentially) useful new syscalls which we don't yet use in bionic. 41# 42 43# Since Linux 2.5, not in glibc. 44int io_setup(unsigned, aio_context_t*) all 45int io_destroy(aio_context_t) all 46int io_submit(aio_context_t, long, iocb**) all 47int io_getevents(aio_context_t, long, long, io_event*, timespec*) all 48int io_cancel(aio_context_t, iocb*, io_event*) all 49# Since Linux 3.14, not in glibc. 50int sched_getattr(pid_t, sched_attr*, unsigned) all 51int sched_setattr(pid_t, sched_attr*, unsigned, unsigned) all 52# Since Linux 3.19, not in glibc (and not really needed to implement fexecve). 53int execveat(int, const char*, char* const*, char* const*, int) all 54# Since Linux 4.3, not in glibc. Probed for and conditionally used by ART. 55int membarrier(int, int) all 56# Since Linux 5.1, not in glibc. Not used by bionic, and not likely ever 57# to be (because the last thing anyone needs is a new 32-bit ABI in the 58# 2020s!) but http://b/138781460 showed cuttlefish needed at least the 59# clock_gettime64 syscall. 60int clock_gettime64(clockid_t, timespec64*) lp32 61int clock_settime64(clockid_t, const timespec64*) lp32 62int clock_adjtime64(clockid_t, timex64*) lp32 63int clock_getres_time64(clockid_t, timespec64*) lp32 64int clock_nanosleep_time64(clockid_t, int, const timespec64*, timespec*) lp32 65int timer_gettime64(__kernel_timer_t, itimerspec64*) lp32 66int timer_settime64(__kernel_timer_t, int, const itimerspec64*, itimerspec64*) lp32 67int timerfd_gettime64(int, itimerspec64*) lp32 68int timerfd_settime64(int, int, const itimerspec64*, itimerspec64*) lp32 69int utimensat_time64(int, const char*, const timespec64[2], int) lp32 70int pselect6_time64(int, fd_set*, fd_set*, timespec64*, void*) lp32 71int ppoll_time64(pollfd*, unsigned int, timespec64*, const sigset64_t*, size_t) lp32 72int recvmmsg_time64(int, mmsghdr*, unsigned int, int, const timespec64*) lp32 73int rt_sigtimedwait_time64(const sigset64_t*, siginfo_t*, const timespec64*, size_t) lp32 74int futex_time64(int*, int, int, const timespec64*, int*, int) lp32 75int sched_rr_get_interval_time64(pid_t, timespec64*) lp32 76# Since Linux 5.4, not in glibc. Probed for and conditionally used by ART. 77int userfaultfd(int) all 78