xref: /aosp_15_r20/bionic/libc/SECCOMP_ALLOWLIST_COMMON.TXT (revision 8d67ca893c1523eb926b9080dbe4e2ffd2a27ba1)

# 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
int	pivot_root(const char*, const char*)	lp64
int	ioprio_get(int, int)	lp64
int	ioprio_set(int, int, int)	lp64

# Syscalls used internally by bionic, but not exposed directly.
pid_t	gettid()	all
int	futex(int*, int, int, const timespec*, int*, int)	all
pid_t	clone(int (*)(void*), void*, int, void*, ...) all
int	sigreturn(unsigned long)	lp32
int	rt_sigreturn(unsigned long)	all
int	rt_tgsigqueueinfo(pid_t, pid_t, int, siginfo_t*)	all
int	restart_syscall()	all

# The public API doesn't set errno, so we call this via inline assembler.
int 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.)
pid_t	vfork()	arm,x86,x86_64

# Needed for performance tools.
int	perf_event_open(perf_event_attr*, pid_t, int, int, unsigned long)	all

# Needed for strace.
int	tkill(int, int)	all

# Needed for a CTS test of seccomp (b/34763393).
int	seccomp(unsigned, unsigned, void*)	all

# TODO: remove these now we've updated the toolchain (http://b/229989971).
int open(const char*, int, ...)  arm,x86,x86_64
int stat64(const char*, stat64*)  arm,x86
ssize_t readlink(const char*, char*, size_t)  arm,x86,x86_64
int 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.
int io_setup(unsigned, aio_context_t*) all
int io_destroy(aio_context_t) all
int io_submit(aio_context_t, long,  iocb**) all
int io_getevents(aio_context_t, long, long, io_event*, timespec*) all
int io_cancel(aio_context_t, iocb*, io_event*) all
# Since Linux 3.14, not in glibc.
int sched_getattr(pid_t, sched_attr*, unsigned) all
int sched_setattr(pid_t, sched_attr*, unsigned, unsigned) all
# Since Linux 3.19, not in glibc (and not really needed to implement fexecve).
int execveat(int, const char*, char* const*, char* const*, int)  all
# Since Linux 4.3, not in glibc. Probed for and conditionally used by ART.
int membarrier(int, int) all
int 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.
int clock_gettime64(clockid_t, timespec64*) lp32
int clock_settime64(clockid_t, const timespec64*) lp32
int clock_adjtime64(clockid_t, timex64*) lp32
int clock_getres_time64(clockid_t, timespec64*) lp32
int clock_nanosleep_time64(clockid_t, int, const timespec64*, timespec*) lp32
int timer_gettime64(__kernel_timer_t, itimerspec64*) lp32
int timer_settime64(__kernel_timer_t, int, const itimerspec64*, itimerspec64*) lp32
int timerfd_gettime64(int, itimerspec64*) lp32
int timerfd_settime64(int, int, const itimerspec64*, itimerspec64*) lp32
int utimensat_time64(int, const char*, const timespec64[2], int) lp32
int pselect6_time64(int, fd_set*, fd_set*, timespec64*, void*) lp32
int ppoll_time64(pollfd*, unsigned int, timespec64*, const sigset64_t*, size_t) lp32
int recvmmsg_time64(int, mmsghdr*, unsigned int, int, const timespec64*) lp32
int rt_sigtimedwait_time64(const sigset64_t*, siginfo_t*, const timespec64*, size_t) lp32
int futex_time64(int*, int, int, const timespec64*, int*, int) lp32
int 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).
pid_t clone3(clone_args*, size_t) all