flags.c revision e222d355a05f2fa56287a33e785f427d46fdd945
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__FBSDID("$FreeBSD$");
28
29#define L2CAP_SOCKET_CHECKED
30
31#include <sys/types.h>
32#include <sys/acl.h>
33#include <sys/capsicum.h>
34#include <sys/extattr.h>
35#include <sys/linker.h>
36#include <sys/mman.h>
37#include <sys/mount.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 <netinet/in.h>
50#include <netinet/sctp.h>
51#include <netinet/tcp.h>
52#include <netinet/udp.h>
53#include <nfsserver/nfs.h>
54#include <ufs/ufs/quota.h>
55#include <vm/vm.h>
56#include <vm/vm_param.h>
57#include <aio.h>
58#include <fcntl.h>
59#include <sched.h>
60#include <stdbool.h>
61#include <stdio.h>
62#include <stdlib.h>
63#include <strings.h>
64#include <sysdecode.h>
65#include <unistd.h>
66#include <sys/bitstring.h>
67#include <netgraph/bluetooth/include/ng_hci.h>
68#include <netgraph/bluetooth/include/ng_l2cap.h>
69#include <netgraph/bluetooth/include/ng_btsocket.h>
70
71/*
72 * This is taken from the xlat tables originally in truss which were
73 * in turn taken from strace.
74 */
75struct name_table {
76	uintmax_t val;
77	const char *str;
78};
79
80#define	X(a)	{ a, #a },
81#define	XEND	{ 0, NULL }
82
83#define	TABLE_START(n)	static struct name_table n[] = {
84#define	TABLE_ENTRY	X
85#define	TABLE_END	XEND };
86
87#include "tables.h"
88
89#undef TABLE_START
90#undef TABLE_ENTRY
91#undef TABLE_END
92
93/*
94 * These are simple support macros. print_or utilizes a variable
95 * defined in the calling function to track whether or not it should
96 * print a logical-OR character ('|') before a string. if_print_or
97 * simply handles the necessary "if" statement used in many lines
98 * of this file.
99 */
100#define print_or(fp,str,orflag) do {                     \
101	if (orflag) fputc(fp, '|'); else orflag = true;  \
102	fprintf(fp, str); }                              \
103	while (0)
104#define if_print_or(fp,i,flag,orflag) do {         \
105	if ((i & flag) == flag)                    \
106	print_or(fp,#flag,orflag); }               \
107	while (0)
108
109static const char *
110lookup_value(struct name_table *table, uintmax_t val)
111{
112
113	for (; table->str != NULL; table++)
114		if (table->val == val)
115			return (table->str);
116	return (NULL);
117}
118
119/*
120 * Used when the value maps to a bitmask of #definition values in the
121 * table.  This is a helper routine which outputs a symbolic mask of
122 * matched masks.  Multiple masks are separated by a pipe ('|').
123 * The value is modified on return to only hold unmatched bits.
124 */
125static void
126print_mask_part(FILE *fp, struct name_table *table, uintmax_t *valp,
127    bool *printed)
128{
129	uintmax_t rem;
130
131	rem = *valp;
132	for (; table->str != NULL; table++) {
133		if ((table->val & rem) == table->val) {
134			/*
135			 * Only print a zero mask if the raw value is
136			 * zero.
137			 */
138			if (table->val == 0 && *valp != 0)
139				continue;
140			fprintf(fp, "%s%s", *printed ? "|" : "", table->str);
141			*printed = true;
142			rem &= ~table->val;
143		}
144	}
145
146	*valp = rem;
147}
148
149/*
150 * Used when the value maps to a bitmask of #definition values in the
151 * table.  The return value is true if something was printed.  If
152 * rem is not NULL, *rem holds any bits not decoded if something was
153 * printed.  If nothing was printed and rem is not NULL, *rem holds
154 * the original value.
155 */
156static bool
157print_mask_int(FILE *fp, struct name_table *table, int ival, int *rem)
158{
159	uintmax_t val;
160	bool printed;
161
162	printed = false;
163	val = (unsigned)ival;
164	print_mask_part(fp, table, &val, &printed);
165	if (rem != NULL)
166		*rem = val;
167	return (printed);
168}
169
170/*
171 * Used for a mask of optional flags where a value of 0 is valid.
172 */
173static bool
174print_mask_0(FILE *fp, struct name_table *table, int val, int *rem)
175{
176
177	if (val == 0) {
178		fputs("0", fp);
179		if (rem != NULL)
180			*rem = 0;
181		return (true);
182	}
183	return (print_mask_int(fp, table, val, rem));
184}
185
186/*
187 * Like print_mask_0 but for a unsigned long instead of an int.
188 */
189static bool
190print_mask_0ul(FILE *fp, struct name_table *table, u_long lval, u_long *rem)
191{
192	uintmax_t val;
193	bool printed;
194
195	if (lval == 0) {
196		fputs("0", fp);
197		if (rem != NULL)
198			*rem = 0;
199		return (true);
200	}
201
202	printed = false;
203	val = lval;
204	print_mask_part(fp, table, &val, &printed);
205	if (rem != NULL)
206		*rem = val;
207	return (printed);
208}
209
210static void
211print_integer(FILE *fp, int val, int base)
212{
213
214	switch (base) {
215	case 8:
216		fprintf(fp, "0%o", val);
217		break;
218	case 10:
219		fprintf(fp, "%d", val);
220		break;
221	case 16:
222		fprintf(fp, "0x%x", val);
223		break;
224	default:
225		abort2("bad base", 0, NULL);
226		break;
227	}
228}
229
230static bool
231print_value(FILE *fp, struct name_table *table, uintmax_t val)
232{
233	const char *str;
234
235	str = lookup_value(table, val);
236	if (str != NULL) {
237		fputs(str, fp);
238		return (true);
239	}
240	return (false);
241}
242
243const char *
244sysdecode_atfd(int fd)
245{
246
247	if (fd == AT_FDCWD)
248		return ("AT_FDCWD");
249	return (NULL);
250}
251
252static struct name_table semctlops[] = {
253	X(GETNCNT) X(GETPID) X(GETVAL) X(GETALL) X(GETZCNT) X(SETVAL) X(SETALL)
254	X(IPC_RMID) X(IPC_SET) X(IPC_STAT) XEND
255};
256
257const char *
258sysdecode_semctl_cmd(int cmd)
259{
260
261	return (lookup_value(semctlops, cmd));
262}
263
264static struct name_table shmctlops[] = {
265	X(IPC_RMID) X(IPC_SET) X(IPC_STAT) XEND
266};
267
268const char *
269sysdecode_shmctl_cmd(int cmd)
270{
271
272	return (lookup_value(shmctlops, cmd));
273}
274
275const char *
276sysdecode_msgctl_cmd(int cmd)
277{
278
279	return (sysdecode_shmctl_cmd(cmd));
280}
281
282static struct name_table semgetflags[] = {
283	X(IPC_CREAT) X(IPC_EXCL) X(SEM_R) X(SEM_A) X((SEM_R>>3)) X((SEM_A>>3))
284	X((SEM_R>>6)) X((SEM_A>>6)) XEND
285};
286
287bool
288sysdecode_semget_flags(FILE *fp, int flag, int *rem)
289{
290
291	return (print_mask_int(fp, semgetflags, flag, rem));
292}
293
294static struct name_table idtypes[] = {
295	X(P_PID) X(P_PPID) X(P_PGID) X(P_SID) X(P_CID) X(P_UID) X(P_GID)
296	X(P_ALL) X(P_LWPID) X(P_TASKID) X(P_PROJID) X(P_POOLID) X(P_JAILID)
297	X(P_CTID) X(P_CPUID) X(P_PSETID) XEND
298};
299
300/* XXX: idtype is really an idtype_t */
301const char *
302sysdecode_idtype(int idtype)
303{
304
305	return (lookup_value(idtypes, idtype));
306}
307
308/*
309 * [g|s]etsockopt's level argument can either be SOL_SOCKET or a
310 * protocol-specific value.
311 */
312const char *
313sysdecode_sockopt_level(int level)
314{
315	const char *str;
316
317	if (level == SOL_SOCKET)
318		return ("SOL_SOCKET");
319
320	/* SOL_* constants for Bluetooth sockets. */
321	str = lookup_value(ngbtsolevel, level);
322	if (str != NULL)
323		return (str);
324
325	/*
326	 * IP and Infiniband sockets use IP protocols as levels.  Not all
327	 * protocols are valid but it is simpler to just allow all of them.
328	 *
329	 * XXX: IPPROTO_IP == 0, but UNIX domain sockets use a level of 0
330	 * for private options.
331	 */
332	str = sysdecode_ipproto(level);
333	if (str != NULL)
334		return (str);
335
336	return (NULL);
337}
338
339bool
340sysdecode_vmprot(FILE *fp, int type, int *rem)
341{
342
343	return (print_mask_int(fp, vmprot, type, rem));
344}
345
346static struct name_table sockflags[] = {
347	X(SOCK_CLOEXEC) X(SOCK_NONBLOCK) XEND
348};
349
350bool
351sysdecode_socket_type(FILE *fp, int type, int *rem)
352{
353	const char *str;
354	uintmax_t val;
355	bool printed;
356
357	str = lookup_value(socktype, type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK));
358	if (str != NULL) {
359		fputs(str, fp);
360		*rem = 0;
361		printed = true;
362	} else {
363		*rem = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
364		printed = false;
365	}
366	val = type & (SOCK_CLOEXEC | SOCK_NONBLOCK);
367	print_mask_part(fp, sockflags, &val, &printed);
368	return (printed);
369}
370
371bool
372sysdecode_access_mode(FILE *fp, int mode, int *rem)
373{
374
375	return (print_mask_int(fp, accessmode, mode, rem));
376}
377
378/* XXX: 'type' is really an acl_type_t. */
379const char *
380sysdecode_acltype(int type)
381{
382
383	return (lookup_value(acltype, type));
384}
385
386bool
387sysdecode_cap_fcntlrights(FILE *fp, uint32_t rights, uint32_t *rem)
388{
389
390	return (print_mask_int(fp, capfcntl, rights, rem));
391}
392
393const char *
394sysdecode_extattrnamespace(int namespace)
395{
396
397	return (lookup_value(extattrns, namespace));
398}
399
400const char *
401sysdecode_fadvice(int advice)
402{
403
404	return (lookup_value(fadvisebehav, advice));
405}
406
407bool
408sysdecode_open_flags(FILE *fp, int flags, int *rem)
409{
410	bool printed;
411	int mode;
412	uintmax_t val;
413
414	mode = flags & O_ACCMODE;
415	flags &= ~O_ACCMODE;
416	switch (mode) {
417	case O_RDONLY:
418		if (flags & O_EXEC) {
419			flags &= ~O_EXEC;
420			fputs("O_EXEC", fp);
421		} else
422			fputs("O_RDONLY", fp);
423		printed = true;
424		mode = 0;
425		break;
426	case O_WRONLY:
427		fputs("O_WRONLY", fp);
428		printed = true;
429		mode = 0;
430		break;
431	case O_RDWR:
432		fputs("O_RDWR", fp);
433		printed = true;
434		mode = 0;
435		break;
436	default:
437		printed = false;
438	}
439	val = (unsigned)flags;
440	print_mask_part(fp, openflags, &val, &printed);
441	if (rem != NULL)
442		*rem = val | mode;
443	return (printed);
444}
445
446bool
447sysdecode_fcntl_fileflags(FILE *fp, int flags, int *rem)
448{
449	bool printed;
450	int oflags;
451
452	/*
453	 * The file flags used with F_GETFL/F_SETFL mostly match the
454	 * flags passed to open(2).  However, a few open-only flag
455	 * bits have been repurposed for fcntl-only flags.
456	 */
457	oflags = flags & ~(O_NOFOLLOW | FRDAHEAD);
458	printed = sysdecode_open_flags(fp, oflags, rem);
459	if (flags & O_NOFOLLOW) {
460		fprintf(fp, "%sFPOIXSHM", printed ? "|" : "");
461		printed = true;
462	}
463	if (flags & FRDAHEAD) {
464		fprintf(fp, "%sFRDAHEAD", printed ? "|" : "");
465		printed = true;
466	}
467	return (printed);
468}
469
470bool
471sysdecode_flock_operation(FILE *fp, int operation, int *rem)
472{
473
474	return (print_mask_int(fp, flockops, operation, rem));
475}
476
477static struct name_table getfsstatmode[] = {
478	X(MNT_WAIT) X(MNT_NOWAIT) XEND
479};
480
481const char *
482sysdecode_getfsstat_mode(int mode)
483{
484
485	return (lookup_value(getfsstatmode, mode));
486}
487
488const char *
489sysdecode_kldsym_cmd(int cmd)
490{
491
492	return (lookup_value(kldsymcmd, cmd));
493}
494
495const char *
496sysdecode_kldunload_flags(int flags)
497{
498
499	return (lookup_value(kldunloadfflags, flags));
500}
501
502const char *
503sysdecode_lio_listio_mode(int mode)
504{
505
506	return (lookup_value(lio_listiomodes, mode));
507}
508
509const char *
510sysdecode_madvice(int advice)
511{
512
513	return (lookup_value(madvisebehav, advice));
514}
515
516const char *
517sysdecode_minherit_inherit(int inherit)
518{
519
520	return (lookup_value(minheritflags, inherit));
521}
522
523bool
524sysdecode_mlockall_flags(FILE *fp, int flags, int *rem)
525{
526
527	return (print_mask_int(fp, mlockallflags, flags, rem));
528}
529
530bool
531sysdecode_mmap_prot(FILE *fp, int prot, int *rem)
532{
533
534	return (print_mask_int(fp, mmapprot, prot, rem));
535}
536
537bool
538sysdecode_fileflags(FILE *fp, fflags_t flags, fflags_t *rem)
539{
540
541	return (print_mask_0(fp, fileflags, flags, rem));
542}
543
544bool
545sysdecode_filemode(FILE *fp, int mode, int *rem)
546{
547
548	return (print_mask_0(fp, filemode, mode, rem));
549}
550
551bool
552sysdecode_mount_flags(FILE *fp, int flags, int *rem)
553{
554
555	return (print_mask_int(fp, mountflags, flags, rem));
556}
557
558bool
559sysdecode_msync_flags(FILE *fp, int flags, int *rem)
560{
561
562	return (print_mask_int(fp, msyncflags, flags, rem));
563}
564
565const char *
566sysdecode_nfssvc_flags(int flags)
567{
568
569	return (lookup_value(nfssvcflags, flags));
570}
571
572static struct name_table pipe2flags[] = {
573	X(O_CLOEXEC) X(O_NONBLOCK) XEND
574};
575
576bool
577sysdecode_pipe2_flags(FILE *fp, int flags, int *rem)
578{
579
580	return (print_mask_0(fp, pipe2flags, flags, rem));
581}
582
583const char *
584sysdecode_prio_which(int which)
585{
586
587	return (lookup_value(prio, which));
588}
589
590const char *
591sysdecode_procctl_cmd(int cmd)
592{
593
594	return (lookup_value(procctlcmd, cmd));
595}
596
597const char *
598sysdecode_ptrace_request(int request)
599{
600
601	return (lookup_value(ptraceop, request));
602}
603
604static struct name_table quotatypes[] = {
605	X(GRPQUOTA) X(USRQUOTA) XEND
606};
607
608bool
609sysdecode_quotactl_cmd(FILE *fp, int cmd)
610{
611	const char *primary, *type;
612
613	primary = lookup_value(quotactlcmds, cmd >> SUBCMDSHIFT);
614	if (primary == NULL)
615		return (false);
616	fprintf(fp, "QCMD(%s,", primary);
617	type = lookup_value(quotatypes, cmd & SUBCMDMASK);
618	if (type != NULL)
619		fprintf(fp, "%s", type);
620	else
621		fprintf(fp, "%#x", cmd & SUBCMDMASK);
622	fprintf(fp, ")");
623	return (true);
624}
625
626bool
627sysdecode_reboot_howto(FILE *fp, int howto, int *rem)
628{
629
630	return (print_mask_int(fp, rebootopt, howto, rem));
631}
632
633bool
634sysdecode_rfork_flags(FILE *fp, int flags, int *rem)
635{
636
637	return (print_mask_int(fp, rforkflags, flags, rem));
638}
639
640const char *
641sysdecode_rlimit(int resource)
642{
643
644	return (lookup_value(rlimit, resource));
645}
646
647const char *
648sysdecode_scheduler_policy(int policy)
649{
650
651	return (lookup_value(schedpolicy, policy));
652}
653
654bool
655sysdecode_sendfile_flags(FILE *fp, int flags, int *rem)
656{
657
658	return (print_mask_int(fp, sendfileflags, flags, rem));
659}
660
661bool
662sysdecode_shmat_flags(FILE *fp, int flags, int *rem)
663{
664
665	return (print_mask_int(fp, shmatflags, flags, rem));
666}
667
668const char *
669sysdecode_shutdown_how(int how)
670{
671
672	return (lookup_value(shutdownhow, how));
673}
674
675const char *
676sysdecode_sigbus_code(int si_code)
677{
678
679	return (lookup_value(sigbuscode, si_code));
680}
681
682const char *
683sysdecode_sigchld_code(int si_code)
684{
685
686	return (lookup_value(sigchldcode, si_code));
687}
688
689const char *
690sysdecode_sigfpe_code(int si_code)
691{
692
693	return (lookup_value(sigfpecode, si_code));
694}
695
696const char *
697sysdecode_sigill_code(int si_code)
698{
699
700	return (lookup_value(sigillcode, si_code));
701}
702
703const char *
704sysdecode_sigsegv_code(int si_code)
705{
706
707	return (lookup_value(sigsegvcode, si_code));
708}
709
710const char *
711sysdecode_sigtrap_code(int si_code)
712{
713
714	return (lookup_value(sigtrapcode, si_code));
715}
716
717const char *
718sysdecode_sigprocmask_how(int how)
719{
720
721	return (lookup_value(sigprocmaskhow, how));
722}
723
724const char *
725sysdecode_socketdomain(int domain)
726{
727
728	return (lookup_value(sockdomain, domain));
729}
730
731const char *
732sysdecode_sockaddr_family(int sa_family)
733{
734
735	return (lookup_value(sockfamily, sa_family));
736}
737
738const char *
739sysdecode_ipproto(int protocol)
740{
741
742	return (lookup_value(sockipproto, protocol));
743}
744
745const char *
746sysdecode_sockopt_name(int level, int optname)
747{
748
749	if (level == SOL_SOCKET)
750		return (lookup_value(sockopt, optname));
751	if (level == IPPROTO_IP)
752		/* XXX: UNIX domain socket options use a level of 0 also. */
753		return (lookup_value(sockoptip, optname));
754	if (level == IPPROTO_IPV6)
755		return (lookup_value(sockoptipv6, optname));
756	if (level == IPPROTO_SCTP)
757		return (lookup_value(sockoptsctp, optname));
758	if (level == IPPROTO_TCP)
759		return (lookup_value(sockopttcp, optname));
760	if (level == IPPROTO_UDP)
761		return (lookup_value(sockoptudp, optname));
762	return (NULL);
763}
764
765bool
766sysdecode_thr_create_flags(FILE *fp, int flags, int *rem)
767{
768
769	return (print_mask_int(fp, thrcreateflags, flags, rem));
770}
771
772const char *
773sysdecode_umtx_op(int op)
774{
775
776	return (lookup_value(umtxop, op));
777}
778
779const char *
780sysdecode_vmresult(int result)
781{
782
783	return (lookup_value(vmresult, result));
784}
785
786bool
787sysdecode_wait4_options(FILE *fp, int options, int *rem)
788{
789	bool printed;
790	int opt6;
791
792	/* A flags value of 0 is normal. */
793	if (options == 0) {
794		fputs("0", fp);
795		if (rem != NULL)
796			*rem = 0;
797		return (true);
798	}
799
800	/*
801	 * These flags are implicit and aren't valid flags for wait4()
802	 * directly (though they don't fail with EINVAL).
803	 */
804	opt6 = options & (WEXITED | WTRAPPED);
805	options &= ~opt6;
806	printed = print_mask_int(fp, wait6opt, options, rem);
807	if (rem != NULL)
808		*rem |= opt6;
809	return (printed);
810}
811
812bool
813sysdecode_wait6_options(FILE *fp, int options, int *rem)
814{
815
816	return (print_mask_int(fp, wait6opt, options, rem));
817}
818
819const char *
820sysdecode_whence(int whence)
821{
822
823	return (lookup_value(seekwhence, whence));
824}
825
826const char *
827sysdecode_fcntl_cmd(int cmd)
828{
829
830	return (lookup_value(fcntlcmd, cmd));
831}
832
833static struct name_table fcntl_fd_arg[] = {
834	X(FD_CLOEXEC) X(0) XEND
835};
836
837bool
838sysdecode_fcntl_arg_p(int cmd)
839{
840
841	switch (cmd) {
842	case F_GETFD:
843	case F_GETFL:
844	case F_GETOWN:
845		return (false);
846	default:
847		return (true);
848	}
849}
850
851void
852sysdecode_fcntl_arg(FILE *fp, int cmd, uintptr_t arg, int base)
853{
854	int rem;
855
856	switch (cmd) {
857	case F_SETFD:
858		if (!print_value(fp, fcntl_fd_arg, arg))
859		    print_integer(fp, arg, base);
860		break;
861	case F_SETFL:
862		if (!sysdecode_fcntl_fileflags(fp, arg, &rem))
863			fprintf(fp, "%#x", rem);
864		else if (rem != 0)
865			fprintf(fp, "|%#x", rem);
866		break;
867	case F_GETLK:
868	case F_SETLK:
869	case F_SETLKW:
870		fprintf(fp, "%p", (void *)arg);
871		break;
872	default:
873		print_integer(fp, arg, base);
874		break;
875	}
876}
877
878bool
879sysdecode_mmap_flags(FILE *fp, int flags, int *rem)
880{
881	uintmax_t val;
882	bool printed;
883	int align;
884
885	/*
886	 * MAP_ALIGNED can't be handled directly by print_mask_int().
887	 * MAP_32BIT is also problematic since it isn't defined for
888	 * all platforms.
889	 */
890	printed = false;
891	align = flags & MAP_ALIGNMENT_MASK;
892	val = (unsigned)flags & ~MAP_ALIGNMENT_MASK;
893	print_mask_part(fp, mmapflags, &val, &printed);
894#ifdef MAP_32BIT
895	if (val & MAP_32BIT) {
896		fprintf(fp, "%sMAP_32BIT", printed ? "|" : "");
897		printed = true;
898		val &= ~MAP_32BIT;
899	}
900#endif
901	if (align != 0) {
902		if (printed)
903			fputc('|', fp);
904		if (align == MAP_ALIGNED_SUPER)
905			fputs("MAP_ALIGNED_SUPER", fp);
906		else
907			fprintf(fp, "MAP_ALIGNED(%d)",
908			    align >> MAP_ALIGNMENT_SHIFT);
909		printed = true;
910	}
911	if (rem != NULL)
912		*rem = val;
913	return (printed);
914}
915
916const char *
917sysdecode_rtprio_function(int function)
918{
919
920	return (lookup_value(rtpriofuncs, function));
921}
922
923bool
924sysdecode_msg_flags(FILE *fp, int flags, int *rem)
925{
926
927	return (print_mask_0(fp, msgflags, flags, rem));
928}
929
930const char *
931sysdecode_sigcode(int sig, int si_code)
932{
933	const char *str;
934
935	str = lookup_value(sigcode, si_code);
936	if (str != NULL)
937		return (str);
938
939	switch (sig) {
940	case SIGILL:
941		return (sysdecode_sigill_code(si_code));
942	case SIGBUS:
943		return (sysdecode_sigbus_code(si_code));
944	case SIGSEGV:
945		return (sysdecode_sigsegv_code(si_code));
946	case SIGFPE:
947		return (sysdecode_sigfpe_code(si_code));
948	case SIGTRAP:
949		return (sysdecode_sigtrap_code(si_code));
950	case SIGCHLD:
951		return (sysdecode_sigchld_code(si_code));
952	default:
953		return (NULL);
954	}
955}
956
957bool
958sysdecode_umtx_cvwait_flags(FILE *fp, u_long flags, u_long *rem)
959{
960
961	return (print_mask_0ul(fp, umtxcvwaitflags, flags, rem));
962}
963
964bool
965sysdecode_umtx_rwlock_flags(FILE *fp, u_long flags, u_long *rem)
966{
967
968	return (print_mask_0ul(fp, umtxrwlockflags, flags, rem));
969}
970
971void
972sysdecode_cap_rights(FILE *fp, cap_rights_t *rightsp)
973{
974	struct name_table *t;
975	bool comma;
976
977	comma = false;
978	for (t = caprights; t->str != NULL; t++) {
979		if (cap_rights_is_set(rightsp, t->val)) {
980			fprintf(fp, "%s%s", comma ? "," : "", t->str);
981			comma = true;
982		}
983	}
984}
985