1/*
2 * Copyright (c) 2006 "David Kirchner" <dpk@dpk.net>. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27#define L2CAP_SOCKET_CHECKED
28
29#include <sys/types.h>
30#include <sys/acl.h>
31#include <sys/capsicum.h>
32#include <sys/event.h>
33#include <sys/extattr.h>
34#include <sys/linker.h>
35#include <sys/mman.h>
36#include <sys/mount.h>
37#include <sys/poll.h>
38#include <sys/procctl.h>
39#include <sys/ptrace.h>
40#include <sys/reboot.h>
41#include <sys/resource.h>
42#include <sys/rtprio.h>
43#include <sys/sem.h>
44#include <sys/shm.h>
45#include <sys/socket.h>
46#include <sys/stat.h>
47#include <sys/thr.h>
48#include <sys/umtx.h>
49#include <machine/sysarch.h>
50#include <netinet/in.h>
51#include <netinet/sctp.h>
52#include <netinet/tcp.h>
53#include <netinet/udp.h>
54#include <netinet/udplite.h>
55#include <nfsserver/nfs.h>
56#include <ufs/ufs/quota.h>
57#include <vm/vm.h>
58#include <vm/vm_param.h>
59#include <aio.h>
60#include <fcntl.h>
61#include <sched.h>
62#include <stdbool.h>
63#include <stdio.h>
64#include <stdlib.h>
65#include <strings.h>
66#include <sysdecode.h>
67#include <unistd.h>
68#include <sys/bitstring.h>
69#include <netgraph/bluetooth/include/ng_hci.h>
70#include <netgraph/bluetooth/include/ng_l2cap.h>
71#include <netgraph/bluetooth/include/ng_btsocket.h>
72
73#include "support.h"
74
75#define	X(a)	{ a, #a },
76#define	XEND	{ 0, NULL }
77
78#define	TABLE_START(n)	static struct name_table n[] = {
79#define	TABLE_ENTRY	X
80#define	TABLE_END	XEND };
81
82#include "tables.h"
83
84#undef TABLE_START
85#undef TABLE_ENTRY
86#undef TABLE_END
87
88const char *
89sysdecode_atfd(int fd)
90{
91
92	if (fd == AT_FDCWD)
93		return ("AT_FDCWD");
94	return (NULL);
95}
96
97bool
98sysdecode_atflags(FILE *fp, int flag, int *rem)
99{
100
101	return (print_mask_int(fp, atflags, flag, rem));
102}
103
104static struct name_table semctlops[] = {
105	X(GETNCNT) X(GETPID) X(GETVAL) X(GETALL) X(GETZCNT) X(SETVAL) X(SETALL)
106	X(IPC_RMID) X(IPC_SET) X(IPC_STAT) XEND
107};
108
109const char *
110sysdecode_semctl_cmd(int cmd)
111{
112
113	return (lookup_value(semctlops, cmd));
114}
115
116static struct name_table shmctlops[] = {
117	X(IPC_RMID) X(IPC_SET) X(IPC_STAT) XEND
118};
119
120const char *
121sysdecode_shmctl_cmd(int cmd)
122{
123
124	return (lookup_value(shmctlops, cmd));
125}
126
127const char *
128sysdecode_msgctl_cmd(int cmd)
129{
130
131	return (sysdecode_shmctl_cmd(cmd));
132}
133
134static struct name_table semgetflags[] = {
135	X(IPC_CREAT) X(IPC_EXCL) X(SEM_R) X(SEM_A) X((SEM_R>>3)) X((SEM_A>>3))
136	X((SEM_R>>6)) X((SEM_A>>6)) XEND
137};
138
139bool
140sysdecode_semget_flags(FILE *fp, int flag, int *rem)
141{
142
143	return (print_mask_int(fp, semgetflags, flag, rem));
144}
145
146static struct name_table idtypes[] = {
147	X(P_PID) X(P_PPID) X(P_PGID) X(P_SID) X(P_CID) X(P_UID) X(P_GID)
148	X(P_ALL) X(P_LWPID) X(P_TASKID) X(P_PROJID) X(P_POOLID) X(P_JAILID)
149	X(P_CTID) X(P_CPUID) X(P_PSETID) XEND
150};
151
152/* XXX: idtype is really an idtype_t */
153const char *
154sysdecode_idtype(int idtype)
155{
156
157	return (lookup_value(idtypes, idtype));
158}
159
160/*
161 * [g|s]etsockopt's level argument can either be SOL_SOCKET or a
162 * protocol-specific value.
163 */
164const char *
165sysdecode_sockopt_level(int level)
166{
167	const char *str;
168
169	if (level == SOL_SOCKET)
170		return ("SOL_SOCKET");
171
172	/* SOL_* constants for Bluetooth sockets. */
173	str = lookup_value(ngbtsolevel, level);
174	if (str != NULL)
175		return (str);
176
177	/*
178	 * IP and Infiniband sockets use IP protocols as levels.  Not all
179	 * protocols are valid but it is simpler to just allow all of them.
180	 *
181	 * XXX: IPPROTO_IP == 0, but UNIX domain sockets use a level of 0
182	 * for private options.
183	 */
184	str = sysdecode_ipproto(level);
185	if (str != NULL)
186		return (str);
187
188	return (NULL);
189}
190
191bool
192sysdecode_vmprot(FILE *fp, int type, int *rem)
193{
194
195	return (print_mask_int(fp, vmprot, type, rem));
196}
197
198static struct name_table sockflags[] = {
199	X(SOCK_CLOEXEC) X(SOCK_NONBLOCK) XEND
200};
201
202bool
203sysdecode_socket_type(FILE *fp, int type, int *rem)
204{
205	const char *str;
206	uintmax_t val;
207	bool printed;
208
209	str = lookup_value(socktype, type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK));
210	if (str != NULL) {
211		fputs(str, fp);
212		*rem = 0;
213		printed = true;
214	} else {
215		*rem = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
216		printed = false;
217	}
218	val = type & (SOCK_CLOEXEC | SOCK_NONBLOCK);
219	print_mask_part(fp, sockflags, &val, &printed);
220	return (printed);
221}
222
223bool
224sysdecode_access_mode(FILE *fp, int mode, int *rem)
225{
226
227	return (print_mask_int(fp, accessmode, mode, rem));
228}
229
230/* XXX: 'type' is really an acl_type_t. */
231const char *
232sysdecode_acltype(int type)
233{
234
235	return (lookup_value(acltype, type));
236}
237
238bool
239sysdecode_cap_fcntlrights(FILE *fp, uint32_t rights, uint32_t *rem)
240{
241
242	return (print_mask_int(fp, capfcntl, rights, rem));
243}
244
245bool
246sysdecode_close_range_flags(FILE *fp, int flags, int *rem)
247{
248
249	return (print_mask_int(fp, closerangeflags, flags, rem));
250}
251
252const char *
253sysdecode_extattrnamespace(int namespace)
254{
255
256	return (lookup_value(extattrns, namespace));
257}
258
259const char *
260sysdecode_fadvice(int advice)
261{
262
263	return (lookup_value(fadvisebehav, advice));
264}
265
266bool
267sysdecode_open_flags(FILE *fp, int flags, int *rem)
268{
269	bool printed;
270	int mode;
271	uintmax_t val;
272
273	mode = flags & O_ACCMODE;
274	flags &= ~O_ACCMODE;
275	switch (mode) {
276	case O_RDONLY:
277		if (flags & O_EXEC) {
278			flags &= ~O_EXEC;
279			fputs("O_EXEC", fp);
280		} else
281			fputs("O_RDONLY", fp);
282		printed = true;
283		mode = 0;
284		break;
285	case O_WRONLY:
286		fputs("O_WRONLY", fp);
287		printed = true;
288		mode = 0;
289		break;
290	case O_RDWR:
291		fputs("O_RDWR", fp);
292		printed = true;
293		mode = 0;
294		break;
295	default:
296		printed = false;
297	}
298	val = (unsigned)flags;
299	print_mask_part(fp, openflags, &val, &printed);
300	if (rem != NULL)
301		*rem = val | mode;
302	return (printed);
303}
304
305bool
306sysdecode_fcntl_fileflags(FILE *fp, int flags, int *rem)
307{
308	bool printed;
309	int oflags;
310
311	/*
312	 * The file flags used with F_GETFL/F_SETFL mostly match the
313	 * flags passed to open(2).  However, a few open-only flag
314	 * bits have been repurposed for fcntl-only flags.
315	 */
316	oflags = flags & ~(O_NOFOLLOW | FRDAHEAD);
317	printed = sysdecode_open_flags(fp, oflags, rem);
318	if (flags & O_NOFOLLOW) {
319		fprintf(fp, "%sFPOIXSHM", printed ? "|" : "");
320		printed = true;
321	}
322	if (flags & FRDAHEAD) {
323		fprintf(fp, "%sFRDAHEAD", printed ? "|" : "");
324		printed = true;
325	}
326	return (printed);
327}
328
329bool
330sysdecode_flock_operation(FILE *fp, int operation, int *rem)
331{
332
333	return (print_mask_int(fp, flockops, operation, rem));
334}
335
336static struct name_table getfsstatmode[] = {
337	X(MNT_WAIT) X(MNT_NOWAIT) XEND
338};
339
340const char *
341sysdecode_getfsstat_mode(int mode)
342{
343
344	return (lookup_value(getfsstatmode, mode));
345}
346
347const char *
348sysdecode_getrusage_who(int who)
349{
350
351	return (lookup_value(rusage, who));
352}
353
354static struct name_table kevent_user_ffctrl[] = {
355	X(NOTE_FFNOP) X(NOTE_FFAND) X(NOTE_FFOR) X(NOTE_FFCOPY)
356	XEND
357};
358
359static struct name_table kevent_rdwr_fflags[] = {
360	X(NOTE_LOWAT) X(NOTE_FILE_POLL) XEND
361};
362
363static struct name_table kevent_vnode_fflags[] = {
364	X(NOTE_DELETE) X(NOTE_WRITE) X(NOTE_EXTEND) X(NOTE_ATTRIB)
365	X(NOTE_LINK) X(NOTE_RENAME) X(NOTE_REVOKE) X(NOTE_OPEN) X(NOTE_CLOSE)
366	X(NOTE_CLOSE_WRITE) X(NOTE_READ) XEND
367};
368
369static struct name_table kevent_proc_fflags[] = {
370	X(NOTE_EXIT) X(NOTE_FORK) X(NOTE_EXEC) X(NOTE_TRACK) X(NOTE_TRACKERR)
371	X(NOTE_CHILD) XEND
372};
373
374static struct name_table kevent_timer_fflags[] = {
375	X(NOTE_SECONDS) X(NOTE_MSECONDS) X(NOTE_USECONDS) X(NOTE_NSECONDS)
376	X(NOTE_ABSTIME) XEND
377};
378
379void
380sysdecode_kevent_fflags(FILE *fp, short filter, int fflags, int base)
381{
382	int rem;
383
384	if (fflags == 0) {
385		fputs("0", fp);
386		return;
387	}
388
389	switch (filter) {
390	case EVFILT_READ:
391	case EVFILT_WRITE:
392		if (!print_mask_int(fp, kevent_rdwr_fflags, fflags, &rem))
393			fprintf(fp, "%#x", rem);
394		else if (rem != 0)
395			fprintf(fp, "|%#x", rem);
396		break;
397	case EVFILT_VNODE:
398		if (!print_mask_int(fp, kevent_vnode_fflags, fflags, &rem))
399			fprintf(fp, "%#x", rem);
400		else if (rem != 0)
401			fprintf(fp, "|%#x", rem);
402		break;
403	case EVFILT_PROC:
404	case EVFILT_PROCDESC:
405		if (!print_mask_int(fp, kevent_proc_fflags, fflags, &rem))
406			fprintf(fp, "%#x", rem);
407		else if (rem != 0)
408			fprintf(fp, "|%#x", rem);
409		break;
410	case EVFILT_TIMER:
411		if (!print_mask_int(fp, kevent_timer_fflags, fflags, &rem))
412			fprintf(fp, "%#x", rem);
413		else if (rem != 0)
414			fprintf(fp, "|%#x", rem);
415		break;
416	case EVFILT_USER: {
417		unsigned int ctrl, data;
418
419		ctrl = fflags & NOTE_FFCTRLMASK;
420		data = fflags & NOTE_FFLAGSMASK;
421
422		if (fflags & NOTE_TRIGGER) {
423			fputs("NOTE_TRIGGER", fp);
424			if (fflags == NOTE_TRIGGER)
425				return;
426			fputc('|', fp);
427		}
428
429		/*
430		 * An event with 'ctrl' == NOTE_FFNOP is either a reported
431		 * (output) event for which only 'data' should be output
432		 * or a pointless input event.  Assume that pointless
433		 * input events don't occur in practice.  An event with
434		 * NOTE_TRIGGER is always an input event.
435		 */
436		if (ctrl != NOTE_FFNOP || fflags & NOTE_TRIGGER) {
437			fprintf(fp, "%s|%#x",
438			    lookup_value(kevent_user_ffctrl, ctrl), data);
439		} else {
440			print_integer(fp, data, base);
441		}
442		break;
443	}
444	default:
445		print_integer(fp, fflags, base);
446		break;
447	}
448}
449
450bool
451sysdecode_kevent_flags(FILE *fp, int flags, int *rem)
452{
453
454	return (print_mask_int(fp, keventflags, flags, rem));
455}
456
457const char *
458sysdecode_kevent_filter(int filter)
459{
460
461	return (lookup_value(keventfilters, filter));
462}
463
464const char *
465sysdecode_kldsym_cmd(int cmd)
466{
467
468	return (lookup_value(kldsymcmd, cmd));
469}
470
471const char *
472sysdecode_kldunload_flags(int flags)
473{
474
475	return (lookup_value(kldunloadfflags, flags));
476}
477
478const char *
479sysdecode_lio_listio_mode(int mode)
480{
481
482	return (lookup_value(lio_listiomodes, mode));
483}
484
485const char *
486sysdecode_madvice(int advice)
487{
488
489	return (lookup_value(madvisebehav, advice));
490}
491
492const char *
493sysdecode_minherit_inherit(int inherit)
494{
495
496	return (lookup_value(minheritflags, inherit));
497}
498
499bool
500sysdecode_mlockall_flags(FILE *fp, int flags, int *rem)
501{
502
503	return (print_mask_int(fp, mlockallflags, flags, rem));
504}
505
506bool
507sysdecode_mmap_prot(FILE *fp, int prot, int *rem)
508{
509	int protm;
510	bool printed;
511
512	printed = false;
513	protm = PROT_MAX_EXTRACT(prot);
514	prot &= ~PROT_MAX(protm);
515	if (protm != 0) {
516		fputs("PROT_MAX(", fp);
517		printed = print_mask_int(fp, mmapprot, protm, rem);
518		fputs(")|", fp);
519	}
520	return (print_mask_int(fp, mmapprot, prot, rem) || printed);
521}
522
523bool
524sysdecode_fileflags(FILE *fp, fflags_t flags, fflags_t *rem)
525{
526
527	return (print_mask_0(fp, fileflags, flags, rem));
528}
529
530bool
531sysdecode_filemode(FILE *fp, int mode, int *rem)
532{
533
534	return (print_mask_0(fp, filemode, mode, rem));
535}
536
537bool
538sysdecode_mount_flags(FILE *fp, int flags, int *rem)
539{
540
541	return (print_mask_int(fp, mountflags, flags, rem));
542}
543
544bool
545sysdecode_msync_flags(FILE *fp, int flags, int *rem)
546{
547
548	return (print_mask_int(fp, msyncflags, flags, rem));
549}
550
551const char *
552sysdecode_nfssvc_flags(int flags)
553{
554
555	return (lookup_value(nfssvcflags, flags));
556}
557
558static struct name_table pipe2flags[] = {
559	X(O_CLOEXEC) X(O_NONBLOCK) XEND
560};
561
562bool
563sysdecode_pipe2_flags(FILE *fp, int flags, int *rem)
564{
565
566	return (print_mask_0(fp, pipe2flags, flags, rem));
567}
568
569bool
570sysdecode_pollfd_events(FILE *fp, int flags, int *rem)
571{
572
573	return (print_mask_int(fp, pollfdevents, flags, rem));
574}
575
576const char *
577sysdecode_prio_which(int which)
578{
579
580	return (lookup_value(prio, which));
581}
582
583const char *
584sysdecode_procctl_cmd(int cmd)
585{
586
587	return (lookup_value(procctlcmd, cmd));
588}
589
590const char *
591sysdecode_ptrace_request(int request)
592{
593
594	return (lookup_value(ptraceop, request));
595}
596
597static struct name_table quotatypes[] = {
598	X(GRPQUOTA) X(USRQUOTA) XEND
599};
600
601bool
602sysdecode_quotactl_cmd(FILE *fp, int cmd)
603{
604	const char *primary, *type;
605
606	primary = lookup_value(quotactlcmds, cmd >> SUBCMDSHIFT);
607	if (primary == NULL)
608		return (false);
609	fprintf(fp, "QCMD(%s,", primary);
610	type = lookup_value(quotatypes, cmd & SUBCMDMASK);
611	if (type != NULL)
612		fprintf(fp, "%s", type);
613	else
614		fprintf(fp, "%#x", cmd & SUBCMDMASK);
615	fprintf(fp, ")");
616	return (true);
617}
618
619bool
620sysdecode_reboot_howto(FILE *fp, int howto, int *rem)
621{
622	bool printed;
623
624	/*
625	 * RB_AUTOBOOT is special in that its value is zero, but it is
626	 * also an implied argument if a different operation is not
627	 * requested via RB_HALT, RB_POWERCYCLE, RB_POWEROFF, or
628	 * RB_REROOT.
629	 */
630	if (howto != 0 && (howto & (RB_HALT | RB_POWEROFF | RB_REROOT |
631	    RB_POWERCYCLE)) == 0) {
632		fputs("RB_AUTOBOOT|", fp);
633		printed = true;
634	} else
635		printed = false;
636	return (print_mask_int(fp, rebootopt, howto, rem) || printed);
637}
638
639bool
640sysdecode_rfork_flags(FILE *fp, int flags, int *rem)
641{
642
643	return (print_mask_int(fp, rforkflags, flags, rem));
644}
645
646const char *
647sysdecode_rlimit(int resource)
648{
649
650	return (lookup_value(rlimit, resource));
651}
652
653const char *
654sysdecode_scheduler_policy(int policy)
655{
656
657	return (lookup_value(schedpolicy, policy));
658}
659
660bool
661sysdecode_sendfile_flags(FILE *fp, int flags, int *rem)
662{
663
664	return (print_mask_int(fp, sendfileflags, flags, rem));
665}
666
667bool
668sysdecode_shmat_flags(FILE *fp, int flags, int *rem)
669{
670
671	return (print_mask_int(fp, shmatflags, flags, rem));
672}
673
674const char *
675sysdecode_shutdown_how(int how)
676{
677
678	return (lookup_value(shutdownhow, how));
679}
680
681const char *
682sysdecode_sigbus_code(int si_code)
683{
684
685	return (lookup_value(sigbuscode, si_code));
686}
687
688const char *
689sysdecode_sigchld_code(int si_code)
690{
691
692	return (lookup_value(sigchldcode, si_code));
693}
694
695const char *
696sysdecode_sigfpe_code(int si_code)
697{
698
699	return (lookup_value(sigfpecode, si_code));
700}
701
702const char *
703sysdecode_sigill_code(int si_code)
704{
705
706	return (lookup_value(sigillcode, si_code));
707}
708
709const char *
710sysdecode_sigsegv_code(int si_code)
711{
712
713	return (lookup_value(sigsegvcode, si_code));
714}
715
716const char *
717sysdecode_sigtrap_code(int si_code)
718{
719
720	return (lookup_value(sigtrapcode, si_code));
721}
722
723const char *
724sysdecode_sigprocmask_how(int how)
725{
726
727	return (lookup_value(sigprocmaskhow, how));
728}
729
730const char *
731sysdecode_socketdomain(int domain)
732{
733
734	return (lookup_value(sockdomain, domain));
735}
736
737const char *
738sysdecode_socket_protocol(int domain, int protocol)
739{
740
741	switch (domain) {
742	case PF_INET:
743	case PF_INET6:
744		return (lookup_value(sockipproto, protocol));
745	default:
746		return (NULL);
747	}
748}
749
750const char *
751sysdecode_sockaddr_family(int sa_family)
752{
753
754	return (lookup_value(sockfamily, sa_family));
755}
756
757const char *
758sysdecode_ipproto(int protocol)
759{
760
761	return (lookup_value(sockipproto, protocol));
762}
763
764const char *
765sysdecode_sockopt_name(int level, int optname)
766{
767
768	if (level == SOL_SOCKET)
769		return (lookup_value(sockopt, optname));
770	if (level == IPPROTO_IP)
771		/* XXX: UNIX domain socket options use a level of 0 also. */
772		return (lookup_value(sockoptip, optname));
773	if (level == IPPROTO_IPV6)
774		return (lookup_value(sockoptipv6, optname));
775	if (level == IPPROTO_SCTP)
776		return (lookup_value(sockoptsctp, optname));
777	if (level == IPPROTO_TCP)
778		return (lookup_value(sockopttcp, optname));
779	if (level == IPPROTO_UDP)
780		return (lookup_value(sockoptudp, optname));
781	if (level == IPPROTO_UDPLITE)
782		return (lookup_value(sockoptudplite, optname));
783	return (NULL);
784}
785
786bool
787sysdecode_thr_create_flags(FILE *fp, int flags, int *rem)
788{
789
790	return (print_mask_int(fp, thrcreateflags, flags, rem));
791}
792
793const char *
794sysdecode_umtx_op(int op)
795{
796
797	return (lookup_value(umtxop, op));
798}
799
800bool
801sysdecode_umtx_op_flags(FILE *fp, int op, int *rem)
802{
803	uintmax_t val;
804	bool printed;
805
806	printed = false;
807	val = (unsigned)op;
808	print_mask_part(fp, umtxopflags, &val, &printed);
809	if (rem != NULL)
810		*rem = val;
811	return (printed);
812}
813
814const char *
815sysdecode_vmresult(int result)
816{
817
818	return (lookup_value(vmresult, result));
819}
820
821bool
822sysdecode_wait4_options(FILE *fp, int options, int *rem)
823{
824	bool printed;
825	int opt6;
826
827	/* A flags value of 0 is normal. */
828	if (options == 0) {
829		fputs("0", fp);
830		if (rem != NULL)
831			*rem = 0;
832		return (true);
833	}
834
835	/*
836	 * These flags are implicit and aren't valid flags for wait4()
837	 * directly (though they don't fail with EINVAL).
838	 */
839	opt6 = options & (WEXITED | WTRAPPED);
840	options &= ~opt6;
841	printed = print_mask_int(fp, wait6opt, options, rem);
842	if (rem != NULL)
843		*rem |= opt6;
844	return (printed);
845}
846
847bool
848sysdecode_wait6_options(FILE *fp, int options, int *rem)
849{
850
851	return (print_mask_int(fp, wait6opt, options, rem));
852}
853
854const char *
855sysdecode_whence(int whence)
856{
857
858	return (lookup_value(seekwhence, whence));
859}
860
861const char *
862sysdecode_fcntl_cmd(int cmd)
863{
864
865	return (lookup_value(fcntlcmd, cmd));
866}
867
868static struct name_table fcntl_fd_arg[] = {
869	X(FD_CLOEXEC) X(0) XEND
870};
871
872bool
873sysdecode_fcntl_arg_p(int cmd)
874{
875
876	switch (cmd) {
877	case F_GETFD:
878	case F_GETFL:
879	case F_GETOWN:
880		return (false);
881	default:
882		return (true);
883	}
884}
885
886void
887sysdecode_fcntl_arg(FILE *fp, int cmd, uintptr_t arg, int base)
888{
889	int rem;
890
891	switch (cmd) {
892	case F_SETFD:
893		if (!print_value(fp, fcntl_fd_arg, arg))
894		    print_integer(fp, arg, base);
895		break;
896	case F_SETFL:
897		if (!sysdecode_fcntl_fileflags(fp, arg, &rem))
898			fprintf(fp, "%#x", rem);
899		else if (rem != 0)
900			fprintf(fp, "|%#x", rem);
901		break;
902	case F_GETLK:
903	case F_SETLK:
904	case F_SETLKW:
905		fprintf(fp, "%p", (void *)arg);
906		break;
907	default:
908		print_integer(fp, arg, base);
909		break;
910	}
911}
912
913bool
914sysdecode_mmap_flags(FILE *fp, int flags, int *rem)
915{
916	uintmax_t val;
917	bool printed;
918	int align;
919
920	/*
921	 * MAP_ALIGNED can't be handled directly by print_mask_int().
922	 */
923	printed = false;
924	align = flags & MAP_ALIGNMENT_MASK;
925	val = (unsigned)flags & ~MAP_ALIGNMENT_MASK;
926	print_mask_part(fp, mmapflags, &val, &printed);
927	if (align != 0) {
928		if (printed)
929			fputc('|', fp);
930		if (align == MAP_ALIGNED_SUPER)
931			fputs("MAP_ALIGNED_SUPER", fp);
932		else
933			fprintf(fp, "MAP_ALIGNED(%d)",
934			    align >> MAP_ALIGNMENT_SHIFT);
935		printed = true;
936	}
937	if (rem != NULL)
938		*rem = val;
939	return (printed);
940}
941
942const char *
943sysdecode_pathconf_name(int name)
944{
945
946	return (lookup_value(pathconfname, name));
947}
948
949const char *
950sysdecode_rtprio_function(int function)
951{
952
953	return (lookup_value(rtpriofuncs, function));
954}
955
956bool
957sysdecode_msg_flags(FILE *fp, int flags, int *rem)
958{
959
960	return (print_mask_0(fp, msgflags, flags, rem));
961}
962
963const char *
964sysdecode_sigcode(int sig, int si_code)
965{
966	const char *str;
967
968	str = lookup_value(sigcode, si_code);
969	if (str != NULL)
970		return (str);
971
972	switch (sig) {
973	case SIGILL:
974		return (sysdecode_sigill_code(si_code));
975	case SIGBUS:
976		return (sysdecode_sigbus_code(si_code));
977	case SIGSEGV:
978		return (sysdecode_sigsegv_code(si_code));
979	case SIGFPE:
980		return (sysdecode_sigfpe_code(si_code));
981	case SIGTRAP:
982		return (sysdecode_sigtrap_code(si_code));
983	case SIGCHLD:
984		return (sysdecode_sigchld_code(si_code));
985	default:
986		return (NULL);
987	}
988}
989
990const char *
991sysdecode_sysarch_number(int number)
992{
993
994	return (lookup_value(sysarchnum, number));
995}
996
997bool
998sysdecode_umtx_cvwait_flags(FILE *fp, u_long flags, u_long *rem)
999{
1000
1001	return (print_mask_0ul(fp, umtxcvwaitflags, flags, rem));
1002}
1003
1004bool
1005sysdecode_umtx_rwlock_flags(FILE *fp, u_long flags, u_long *rem)
1006{
1007
1008	return (print_mask_0ul(fp, umtxrwlockflags, flags, rem));
1009}
1010
1011void
1012sysdecode_cap_rights(FILE *fp, cap_rights_t *rightsp)
1013{
1014	cap_rights_t diff, sum, zero;
1015	const struct name_table *t;
1016	int i;
1017	bool comma;
1018
1019	for (i = 0; i < CAPARSIZE(rightsp); i++) {
1020		if (CAPIDXBIT(rightsp->cr_rights[i]) != 1 << i) {
1021			fprintf(fp, "invalid cap_rights_t");
1022			return;
1023		}
1024	}
1025	cap_rights_init(&sum);
1026	diff = *rightsp;
1027	for (t = caprights, comma = false; t->str != NULL; t++) {
1028		if (cap_rights_is_set(rightsp, t->val)) {
1029			cap_rights_clear(&diff, t->val);
1030			if (cap_rights_is_set(&sum, t->val)) {
1031				/* Don't print redundant rights. */
1032				continue;
1033			}
1034			cap_rights_set(&sum, t->val);
1035
1036			fprintf(fp, "%s%s", comma ? "," : "", t->str);
1037			comma = true;
1038		}
1039	}
1040	if (!comma)
1041		fprintf(fp, "CAP_NONE");
1042
1043	/*
1044	 * Provide a breadcrumb if some of the provided rights are not included
1045	 * in the table, likely due to a bug in the mktables script.
1046	 */
1047	CAP_NONE(&zero);
1048	if (!cap_rights_contains(&zero, &diff))
1049		fprintf(fp, ",unknown rights");
1050}
1051
1052/*
1053 * Pre-sort the set of rights, which has a partial ordering defined by the
1054 * subset relation.  This lets sysdecode_cap_rights() print a list of minimal
1055 * length with a single pass over the "caprights" table.
1056 */
1057static void __attribute__((constructor))
1058sysdecode_cap_rights_init(void)
1059{
1060	cap_rights_t tr, qr;
1061	struct name_table *t, *q, tmp;
1062	bool swapped;
1063
1064	do {
1065		for (t = caprights, swapped = false; t->str != NULL; t++) {
1066			cap_rights_init(&tr, t->val);
1067			for (q = t + 1; q->str != NULL; q++) {
1068				cap_rights_init(&qr, q->val);
1069				if (cap_rights_contains(&qr, &tr)) {
1070					tmp = *t;
1071					*t = *q;
1072					*q = tmp;
1073					swapped = true;
1074				}
1075			}
1076		}
1077	} while (swapped);
1078}
1079
1080static struct name_table cmsgtypeip[] = {
1081	X(IP_RECVDSTADDR) X(IP_RECVTTL) X(IP_RECVOPTS) X(IP_RECVRETOPTS)
1082	X(IP_RECVIF) X(IP_RECVTOS) X(IP_FLOWID) X(IP_FLOWTYPE)
1083	X(IP_RSSBUCKETID) XEND
1084};
1085
1086static struct name_table cmsgtypeipv6[] = {
1087#if 0
1088	/* The RFC 2292 defines are kernel space only. */
1089	X(IPV6_2292PKTINFO) X(IPV6_2292HOPLIMIT) X(IPV6_2292HOPOPTS)
1090	X(IPV6_2292DSTOPTS) X(IPV6_2292RTHDR) X(IPV6_2292NEXTHOP)
1091#endif
1092	X(IPV6_PKTINFO)  X(IPV6_HOPLIMIT) X(IPV6_HOPOPTS)
1093	X(IPV6_DSTOPTS) X(IPV6_RTHDR) X(IPV6_NEXTHOP)
1094	X(IPV6_TCLASS) X(IPV6_FLOWID) X(IPV6_FLOWTYPE) X(IPV6_RSSBUCKETID)
1095	X(IPV6_PATHMTU) X(IPV6_RTHDRDSTOPTS) X(IPV6_USE_MIN_MTU)
1096	X(IPV6_DONTFRAG) X(IPV6_PREFER_TEMPADDR) XEND
1097};
1098
1099static struct name_table cmsgtypesctp[] = {
1100	X(SCTP_INIT) X(SCTP_SNDRCV) X(SCTP_EXTRCV) X(SCTP_SNDINFO)
1101	X(SCTP_RCVINFO) X(SCTP_NXTINFO) X(SCTP_PRINFO) X(SCTP_AUTHINFO)
1102	X(SCTP_DSTADDRV4) X(SCTP_DSTADDRV6) XEND
1103};
1104
1105const char *
1106sysdecode_cmsg_type(int cmsg_level, int cmsg_type)
1107{
1108
1109	if (cmsg_level == SOL_SOCKET)
1110		return (lookup_value(cmsgtypesocket, cmsg_type));
1111	if (cmsg_level == IPPROTO_IP)
1112		return (lookup_value(cmsgtypeip, cmsg_type));
1113	if (cmsg_level == IPPROTO_IPV6)
1114		return (lookup_value(cmsgtypeipv6, cmsg_type));
1115	if (cmsg_level == IPPROTO_SCTP)
1116		return (lookup_value(cmsgtypesctp, cmsg_type));
1117	return (NULL);
1118}
1119
1120const char *
1121sysdecode_sctp_pr_policy(int policy)
1122{
1123
1124	return (lookup_value(sctpprpolicy, policy));
1125}
1126
1127static struct name_table sctpsndflags[] = {
1128	X(SCTP_EOF) X(SCTP_ABORT) X(SCTP_UNORDERED) X(SCTP_ADDR_OVER)
1129	X(SCTP_SENDALL) X(SCTP_EOR) X(SCTP_SACK_IMMEDIATELY) XEND
1130};
1131
1132bool
1133sysdecode_sctp_snd_flags(FILE *fp, int flags, int *rem)
1134{
1135
1136	return (print_mask_int(fp, sctpsndflags, flags, rem));
1137}
1138
1139static struct name_table sctprcvflags[] = {
1140	X(SCTP_UNORDERED) XEND
1141};
1142
1143bool
1144sysdecode_sctp_rcv_flags(FILE *fp, int flags, int *rem)
1145{
1146
1147	return (print_mask_int(fp, sctprcvflags, flags, rem));
1148}
1149
1150static struct name_table sctpnxtflags[] = {
1151	X(SCTP_UNORDERED) X(SCTP_COMPLETE) X(SCTP_NOTIFICATION) XEND
1152};
1153
1154bool
1155sysdecode_sctp_nxt_flags(FILE *fp, int flags, int *rem)
1156{
1157
1158	return (print_mask_int(fp, sctpnxtflags, flags, rem));
1159}
1160
1161static struct name_table sctpsinfoflags[] = {
1162	X(SCTP_EOF) X(SCTP_ABORT) X(SCTP_UNORDERED) X(SCTP_ADDR_OVER)
1163	X(SCTP_SENDALL) X(SCTP_EOR) X(SCTP_SACK_IMMEDIATELY) XEND
1164};
1165
1166void
1167sysdecode_sctp_sinfo_flags(FILE *fp, int sinfo_flags)
1168{
1169	const char *temp;
1170	int rem;
1171	bool printed;
1172
1173	printed = print_mask_0(fp, sctpsinfoflags, sinfo_flags, &rem);
1174	if (rem & ~SCTP_PR_SCTP_ALL) {
1175		fprintf(fp, "%s%#x", printed ? "|" : "", rem & ~SCTP_PR_SCTP_ALL);
1176		printed = true;
1177		rem &= ~SCTP_PR_SCTP_ALL;
1178	}
1179	if (rem != 0) {
1180		temp = sysdecode_sctp_pr_policy(rem);
1181		if (temp != NULL) {
1182			fprintf(fp, "%s%s", printed ? "|" : "", temp);
1183		} else {
1184			fprintf(fp, "%s%#x", printed ? "|" : "", rem);
1185		}
1186	}
1187}
1188
1189bool
1190sysdecode_shmflags(FILE *fp, int flags, int *rem)
1191{
1192
1193	return (print_mask_0(fp, shmflags, flags, rem));
1194}
1195
1196const char *
1197sysdecode_itimer(int which)
1198{
1199
1200	return (lookup_value(itimerwhich, which));
1201}
1202