add seccomp syscall

We'll use this when restoring eBPF programs in FILTER mode.
Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

arch/arm/syscall.def

@@ -102,3 +102,4 @@ unlinkat			35	328	(int dirfd, const char *pathname, int flags)
 memfd_create			279	385	(const char *name, unsigned int flags)
 io_setup			0	243	(unsigned nr_events, aio_context_t *ctx)
 io_getevents			4	245	(aio_context_t ctx, long min_nr, long nr, struct io_event *evs, struct timespec *tmo)
+seccomp				277	383	(unsigned int op, unsigned int flags, const char *uargs)

arch/ppc64/syscall-ppc64.def

@@ -96,6 +96,7 @@ __NR_prlimit64		325		sys_prlimit64		(pid_t pid, unsigned int resource, const str
 __NR_open_by_handle_at	346		sys_open_by_handle_at	(int mountdirfd, struct file_handle *handle, int flags)
 __NR_setns		350		sys_setns		(int fd, int nstype)
 __NR_kcmp		354		sys_kcmp		(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2)
+__NR_seccomp		358		sys_seccomp		(unsigned int op, unsigned int flags, const char *uargs)
 __NR_memfd_create	360		sys_memfd_create	(const char *name, unsigned int flags)
 __NR_io_setup		227		sys_io_setup		(unsigned nr_events, aio_context_t *ctx_idp)
 __NR_io_getevents	229		sys_io_getevents	(aio_context_t ctx_id, long min_nr, long nr, struct io_event *events, struct timespec *timeout)

arch/x86/syscalls/syscall_32.tbl

@@ -73,6 +73,7 @@ __NR_timer_gettime	261		sys_timer_gettime	(int timer_id, struct itimerspec *sett
 __NR_timer_getoverrun	262		sys_timer_getoverrun	(int timer_id)
 __NR_timer_delete	263		sys_timer_delete	(timer_t timer_id)
 __NR_clock_gettime	265		sys_clock_gettime	(int which_clock, struct timespec *tp)
+__NR_seccomp		354		sys_seccomp		(unsigned int op, unsigned int flags, const char *uargs)
 __NR_waitid		284		sys_waitid		(int which, pid_t pid, struct siginfo *infop, int options, struct rusage *ru)
 __NR_set_robust_list	311		sys_set_robust_list	(struct robust_list_head *head, size_t len)
 __NR_get_robust_list	312		sys_get_robust_list	(int pid, struct robust_list_head **head_ptr, size_t *len_ptr)

arch/x86/syscalls/syscall_64.tbl

@@ -87,6 +87,7 @@ __NR_openat			257		sys_openat		(int dfd, const char *filename, int flags, int mo
 __NR_waitid			247		sys_waitid		(int which, pid_t pid, struct siginfo *infop, int options, struct rusage *ru)
 __NR_set_robust_list		273		sys_set_robust_list	(struct robust_list_head *head, size_t len)
 __NR_get_robust_list		274		sys_get_robust_list	(int pid, struct robust_list_head **head_ptr, size_t *len_ptr)
+__NR_seccomp			317		sys_seccomp		(unsigned int op, unsigned int flags, const char *uargs)
 __NR_vmsplice			278		sys_vmsplice		(int fd, const struct iovec *iov, unsigned long nr_segs, unsigned int flags)
 __NR_timerfd_settime		286		sys_timerfd_settime	(int ufd, int flags, const struct itimerspec *utmr, struct itimerspec *otmr)
 __NR_signalfd4			289		sys_signalfd		(int fd, k_rtsigset_t *mask, size_t sizemask, int flags)