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
14pid_t	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# The public API doesn't set errno, so we call this via inline assembler.
21int riscv_hwprobe(riscv_hwprobe*, size_t, size_t, unsigned long*, unsigned) riscv64
22
23# vfork is used by bionic (and java.lang.ProcessBuilder) on some
24# architectures. (The others use clone(2) directly instead.)
25pid_t	vfork()	arm,x86,x86_64
26
27# Needed for performance tools.
28int	perf_event_open(perf_event_attr*, pid_t, int, int, unsigned long)	all
29
30# Needed for strace.
31int	tkill(int, int)	all
32
33# Needed for a CTS test of seccomp (b/34763393).
34int	seccomp(unsigned, unsigned, void*)	all
35
36# TODO: remove these now we've updated the toolchain (http://b/229989971).
37int open(const char*, int, ...)  arm,x86,x86_64
38int stat64(const char*, stat64*)  arm,x86
39ssize_t readlink(const char*, char*, size_t)  arm,x86,x86_64
40int stat(const char*, stat*)  arm,x86,x86_64
41
42#
43# (Potentially) useful new syscalls which we don't yet use in bionic.
44#
45
46# Since Linux 2.5, not in glibc.
47int io_setup(unsigned, aio_context_t*) all
48int io_destroy(aio_context_t) all
49int io_submit(aio_context_t, long,  iocb**) all
50int io_getevents(aio_context_t, long, long, io_event*, timespec*) all
51int io_cancel(aio_context_t, iocb*, io_event*) all
52# Since Linux 3.14, not in glibc.
53int sched_getattr(pid_t, sched_attr*, unsigned) all
54int sched_setattr(pid_t, sched_attr*, unsigned, unsigned) all
55# Since Linux 3.19, not in glibc (and not really needed to implement fexecve).
56int execveat(int, const char*, char* const*, char* const*, int)  all
57# Since Linux 4.3, not in glibc. Probed for and conditionally used by ART.
58int membarrier(int, int) all
59int userfaultfd(int) all
60# Since Linux 5.1, not in glibc. Not used by bionic, and not likely ever
61# to be (because the last thing anyone needs is a new 32-bit ABI in the
62# 2020s!) but http://b/138781460 showed cuttlefish needed at least the
63# clock_gettime64 syscall.
64int clock_gettime64(clockid_t, timespec64*) lp32
65int clock_settime64(clockid_t, const timespec64*) lp32
66int clock_adjtime64(clockid_t, timex64*) lp32
67int clock_getres_time64(clockid_t, timespec64*) lp32
68int clock_nanosleep_time64(clockid_t, int, const timespec64*, timespec*) lp32
69int timer_gettime64(__kernel_timer_t, itimerspec64*) lp32
70int timer_settime64(__kernel_timer_t, int, const itimerspec64*, itimerspec64*) lp32
71int timerfd_gettime64(int, itimerspec64*) lp32
72int timerfd_settime64(int, int, const itimerspec64*, itimerspec64*) lp32
73int utimensat_time64(int, const char*, const timespec64[2], int) lp32
74int pselect6_time64(int, fd_set*, fd_set*, timespec64*, void*) lp32
75int ppoll_time64(pollfd*, unsigned int, timespec64*, const sigset64_t*, size_t) lp32
76int recvmmsg_time64(int, mmsghdr*, unsigned int, int, const timespec64*) lp32
77int rt_sigtimedwait_time64(const sigset64_t*, siginfo_t*, const timespec64*, size_t) lp32
78int futex_time64(int*, int, int, const timespec64*, int*, int) lp32
79int sched_rr_get_interval_time64(pid_t, timespec64*) lp32
80# Since Linux 5.3, not in glibc. Not used by bionic, but increasingly
81# likely to be useful as new features are added. In particular, cgroups
82# support seems potentially useful for Android (though the struct that
83# changes size over time is obviously problematic).
84pid_t clone3(clone_args*, size_t) all
85