flags.c revision 7735433fd2ccb5c0830fe81d129704dbf132b445
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 <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/*
74 * This is taken from the xlat tables originally in truss which were
75 * in turn taken from strace.
76 */
77struct name_table {
78	uintmax_t val;
79	const char *str;
80};
81
82#define	X(a)	{ a, #a },
83#define	XEND	{ 0, NULL }
84
85#define	TABLE_START(n)	static struct name_table n[] = {
86#define	TABLE_ENTRY	X
87#define	TABLE_END	XEND };
88
89#include "tables.h"
90
91#undef TABLE_START
92#undef TABLE_ENTRY
93#undef TABLE_END
94
95/*
96 * These are simple support macros. print_or utilizes a variable
97 * defined in the calling function to track whether or not it should
98 * print a logical-OR character ('|') before a string. if_print_or
99 * simply handles the necessary "if" statement used in many lines
100 * of this file.
101 */
102#define print_or(fp,str,orflag) do {                     \
103	if (orflag) fputc(fp, '|'); else orflag = true;  \
104	fprintf(fp, str); }                              \
105	while (0)
106#define if_print_or(fp,i,flag,orflag) do {         \
107	if ((i & flag) == flag)                    \
108	print_or(fp,#flag,orflag); }               \
109	while (0)
110
111static const char *
112lookup_value(struct name_table *table, uintmax_t val)
113{
114
115	for (; table->str != NULL; table++)
116		if (table->val == val)
117			return (table->str);
118	return (NULL);
119}
120
121/*
122 * Used when the value maps to a bitmask of #definition values in the
123 * table.  This is a helper routine which outputs a symbolic mask of
124 * matched masks.  Multiple masks are separated by a pipe ('|').
125 * The value is modified on return to only hold unmatched bits.
126 */
127static void
128print_mask_part(FILE *fp, struct name_table *table, uintmax_t *valp,
129    bool *printed)
130{
131	uintmax_t rem;
132
133	rem = *valp;
134	for (; table->str != NULL; table++) {
135		if ((table->val & rem) == table->val) {
136			/*
137			 * Only print a zero mask if the raw value is
138			 * zero.
139			 */
140			if (table->val == 0 && *valp != 0)
141				continue;
142			fprintf(fp, "%s%s", *printed ? "|" : "", table->str);
143			*printed = true;
144			rem &= ~table->val;
145		}
146	}
147
148	*valp = rem;
149}
150
151/*
152 * Used when the value maps to a bitmask of #definition values in the
153 * table.  The return value is true if something was printed.  If
154 * rem is not NULL, *rem holds any bits not decoded if something was
155 * printed.  If nothing was printed and rem is not NULL, *rem holds
156 * the original value.
157 */
158static bool
159print_mask_int(FILE *fp, struct name_table *table, int ival, int *rem)
160{
161	uintmax_t val;
162	bool printed;
163
164	printed = false;
165	val = (unsigned)ival;
166	print_mask_part(fp, table, &val, &printed);
167	if (rem != NULL)
168		*rem = val;
169	return (printed);
170}
171
172/*
173 * Used for a mask of optional flags where a value of 0 is valid.
174 */
175static bool
176print_mask_0(FILE *fp, struct name_table *table, int val, int *rem)
177{
178
179	if (val == 0) {
180		fputs("0", fp);
181		if (rem != NULL)
182			*rem = 0;
183		return (true);
184	}
185	return (print_mask_int(fp, table, val, rem));
186}
187
188/*
189 * Like print_mask_0 but for a unsigned long instead of an int.
190 */
191static bool
192print_mask_0ul(FILE *fp, struct name_table *table, u_long lval, u_long *rem)
193{
194	uintmax_t val;
195	bool printed;
196
197	if (lval == 0) {
198		fputs("0", fp);
199		if (rem != NULL)
200			*rem = 0;
201		return (true);
202	}
203
204	printed = false;
205	val = lval;
206	print_mask_part(fp, table, &val, &printed);
207	if (rem != NULL)
208		*rem = val;
209	return (printed);
210}
211
212static void
213print_integer(FILE *fp, int val, int base)
214{
215
216	switch (base) {
217	case 8:
218		fprintf(fp, "0%o", val);
219		break;
220	case 10:
221		fprintf(fp, "%d", val);
222		break;
223	case 16:
224		fprintf(fp, "0x%x", val);
225		break;
226	default:
227		abort2("bad base", 0, NULL);
228		break;
229	}
230}
231
232static bool
233print_value(FILE *fp, struct name_table *table, uintmax_t val)
234{
235	const char *str;
236
237	str = lookup_value(table, val);
238	if (str != NULL) {
239		fputs(str, fp);
240		return (true);
241	}
242	return (false);
243}
244
245const char *
246sysdecode_atfd(int fd)
247{
248
249	if (fd == AT_FDCWD)
250		return ("AT_FDCWD");
251	return (NULL);
252}
253
254bool
255sysdecode_atflags(FILE *fp, int flag, int *rem)
256{
257
258	return (print_mask_int(fp, atflags, flag, rem));
259}
260
261static struct name_table semctlops[] = {
262	X(GETNCNT) X(GETPID) X(GETVAL) X(GETALL) X(GETZCNT) X(SETVAL) X(SETALL)
263	X(IPC_RMID) X(IPC_SET) X(IPC_STAT) XEND
264};
265
266const char *
267sysdecode_semctl_cmd(int cmd)
268{
269
270	return (lookup_value(semctlops, cmd));
271}
272
273static struct name_table shmctlops[] = {
274	X(IPC_RMID) X(IPC_SET) X(IPC_STAT) XEND
275};
276
277const char *
278sysdecode_shmctl_cmd(int cmd)
279{
280
281	return (lookup_value(shmctlops, cmd));
282}
283
284const char *
285sysdecode_msgctl_cmd(int cmd)
286{
287
288	return (sysdecode_shmctl_cmd(cmd));
289}
290
291static struct name_table semgetflags[] = {
292	X(IPC_CREAT) X(IPC_EXCL) X(SEM_R) X(SEM_A) X((SEM_R>>3)) X((SEM_A>>3))
293	X((SEM_R>>6)) X((SEM_A>>6)) XEND
294};
295
296bool
297sysdecode_semget_flags(FILE *fp, int flag, int *rem)
298{
299
300	return (print_mask_int(fp, semgetflags, flag, rem));
301}
302
303static struct name_table idtypes[] = {
304	X(P_PID) X(P_PPID) X(P_PGID) X(P_SID) X(P_CID) X(P_UID) X(P_GID)
305	X(P_ALL) X(P_LWPID) X(P_TASKID) X(P_PROJID) X(P_POOLID) X(P_JAILID)
306	X(P_CTID) X(P_CPUID) X(P_PSETID) XEND
307};
308
309/* XXX: idtype is really an idtype_t */
310const char *
311sysdecode_idtype(int idtype)
312{
313
314	return (lookup_value(idtypes, idtype));
315}
316
317/*
318 * [g|s]etsockopt's level argument can either be SOL_SOCKET or a
319 * protocol-specific value.
320 */
321const char *
322sysdecode_sockopt_level(int level)
323{
324	const char *str;
325
326	if (level == SOL_SOCKET)
327		return ("SOL_SOCKET");
328
329	/* SOL_* constants for Bluetooth sockets. */
330	str = lookup_value(ngbtsolevel, level);
331	if (str != NULL)
332		return (str);
333
334	/*
335	 * IP and Infiniband sockets use IP protocols as levels.  Not all
336	 * protocols are valid but it is simpler to just allow all of them.
337	 *
338	 * XXX: IPPROTO_IP == 0, but UNIX domain sockets use a level of 0
339	 * for private options.
340	 */
341	str = sysdecode_ipproto(level);
342	if (str != NULL)
343		return (str);
344
345	return (NULL);
346}
347
348bool
349sysdecode_vmprot(FILE *fp, int type, int *rem)
350{
351
352	return (print_mask_int(fp, vmprot, type, rem));
353}
354
355static struct name_table sockflags[] = {
356	X(SOCK_CLOEXEC) X(SOCK_NONBLOCK) XEND
357};
358
359bool
360sysdecode_socket_type(FILE *fp, int type, int *rem)
361{
362	const char *str;
363	uintmax_t val;
364	bool printed;
365
366	str = lookup_value(socktype, type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK));
367	if (str != NULL) {
368		fputs(str, fp);
369		*rem = 0;
370		printed = true;
371	} else {
372		*rem = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
373		printed = false;
374	}
375	val = type & (SOCK_CLOEXEC | SOCK_NONBLOCK);
376	print_mask_part(fp, sockflags, &val, &printed);
377	return (printed);
378}
379
380bool
381sysdecode_access_mode(FILE *fp, int mode, int *rem)
382{
383
384	return (print_mask_int(fp, accessmode, mode, rem));
385}
386
387/* XXX: 'type' is really an acl_type_t. */
388const char *
389sysdecode_acltype(int type)
390{
391
392	return (lookup_value(acltype, type));
393}
394
395bool
396sysdecode_cap_fcntlrights(FILE *fp, uint32_t rights, uint32_t *rem)
397{
398
399	return (print_mask_int(fp, capfcntl, rights, rem));
400}
401
402const char *
403sysdecode_extattrnamespace(int namespace)
404{
405
406	return (lookup_value(extattrns, namespace));
407}
408
409const char *
410sysdecode_fadvice(int advice)
411{
412
413	return (lookup_value(fadvisebehav, advice));
414}
415
416bool
417sysdecode_open_flags(FILE *fp, int flags, int *rem)
418{
419	bool printed;
420	int mode;
421	uintmax_t val;
422
423	mode = flags & O_ACCMODE;
424	flags &= ~O_ACCMODE;
425	switch (mode) {
426	case O_RDONLY:
427		if (flags & O_EXEC) {
428			flags &= ~O_EXEC;
429			fputs("O_EXEC", fp);
430		} else
431			fputs("O_RDONLY", fp);
432		printed = true;
433		mode = 0;
434		break;
435	case O_WRONLY:
436		fputs("O_WRONLY", fp);
437		printed = true;
438		mode = 0;
439		break;
440	case O_RDWR:
441		fputs("O_RDWR", fp);
442		printed = true;
443		mode = 0;
444		break;
445	default:
446		printed = false;
447	}
448	val = (unsigned)flags;
449	print_mask_part(fp, openflags, &val, &printed);
450	if (rem != NULL)
451		*rem = val | mode;
452	return (printed);
453}
454
455bool
456sysdecode_fcntl_fileflags(FILE *fp, int flags, int *rem)
457{
458	bool printed;
459	int oflags;
460
461	/*
462	 * The file flags used with F_GETFL/F_SETFL mostly match the
463	 * flags passed to open(2).  However, a few open-only flag
464	 * bits have been repurposed for fcntl-only flags.
465	 */
466	oflags = flags & ~(O_NOFOLLOW | FRDAHEAD);
467	printed = sysdecode_open_flags(fp, oflags, rem);
468	if (flags & O_NOFOLLOW) {
469		fprintf(fp, "%sFPOIXSHM", printed ? "|" : "");
470		printed = true;
471	}
472	if (flags & FRDAHEAD) {
473		fprintf(fp, "%sFRDAHEAD", printed ? "|" : "");
474		printed = true;
475	}
476	return (printed);
477}
478
479bool
480sysdecode_flock_operation(FILE *fp, int operation, int *rem)
481{
482
483	return (print_mask_int(fp, flockops, operation, rem));
484}
485
486static struct name_table getfsstatmode[] = {
487	X(MNT_WAIT) X(MNT_NOWAIT) XEND
488};
489
490const char *
491sysdecode_getfsstat_mode(int mode)
492{
493
494	return (lookup_value(getfsstatmode, mode));
495}
496
497const char *
498sysdecode_getrusage_who(int who)
499{
500
501	return (lookup_value(rusage, who));
502}
503
504const char *
505sysdecode_kldsym_cmd(int cmd)
506{
507
508	return (lookup_value(kldsymcmd, cmd));
509}
510
511const char *
512sysdecode_kldunload_flags(int flags)
513{
514
515	return (lookup_value(kldunloadfflags, flags));
516}
517
518const char *
519sysdecode_lio_listio_mode(int mode)
520{
521
522	return (lookup_value(lio_listiomodes, mode));
523}
524
525const char *
526sysdecode_madvice(int advice)
527{
528
529	return (lookup_value(madvisebehav, advice));
530}
531
532const char *
533sysdecode_minherit_inherit(int inherit)
534{
535
536	return (lookup_value(minheritflags, inherit));
537}
538
539bool
540sysdecode_mlockall_flags(FILE *fp, int flags, int *rem)
541{
542
543	return (print_mask_int(fp, mlockallflags, flags, rem));
544}
545
546bool
547sysdecode_mmap_prot(FILE *fp, int prot, int *rem)
548{
549
550	return (print_mask_int(fp, mmapprot, prot, rem));
551}
552
553bool
554sysdecode_fileflags(FILE *fp, fflags_t flags, fflags_t *rem)
555{
556
557	return (print_mask_0(fp, fileflags, flags, rem));
558}
559
560bool
561sysdecode_filemode(FILE *fp, int mode, int *rem)
562{
563
564	return (print_mask_0(fp, filemode, mode, rem));
565}
566
567bool
568sysdecode_mount_flags(FILE *fp, int flags, int *rem)
569{
570
571	return (print_mask_int(fp, mountflags, flags, rem));
572}
573
574bool
575sysdecode_msync_flags(FILE *fp, int flags, int *rem)
576{
577
578	return (print_mask_int(fp, msyncflags, flags, rem));
579}
580
581const char *
582sysdecode_nfssvc_flags(int flags)
583{
584
585	return (lookup_value(nfssvcflags, flags));
586}
587
588static struct name_table pipe2flags[] = {
589	X(O_CLOEXEC) X(O_NONBLOCK) XEND
590};
591
592bool
593sysdecode_pipe2_flags(FILE *fp, int flags, int *rem)
594{
595
596	return (print_mask_0(fp, pipe2flags, flags, rem));
597}
598
599const char *
600sysdecode_prio_which(int which)
601{
602
603	return (lookup_value(prio, which));
604}
605
606const char *
607sysdecode_procctl_cmd(int cmd)
608{
609
610	return (lookup_value(procctlcmd, cmd));
611}
612
613const char *
614sysdecode_ptrace_request(int request)
615{
616
617	return (lookup_value(ptraceop, request));
618}
619
620static struct name_table quotatypes[] = {
621	X(GRPQUOTA) X(USRQUOTA) XEND
622};
623
624bool
625sysdecode_quotactl_cmd(FILE *fp, int cmd)
626{
627	const char *primary, *type;
628
629	primary = lookup_value(quotactlcmds, cmd >> SUBCMDSHIFT);
630	if (primary == NULL)
631		return (false);
632	fprintf(fp, "QCMD(%s,", primary);
633	type = lookup_value(quotatypes, cmd & SUBCMDMASK);
634	if (type != NULL)
635		fprintf(fp, "%s", type);
636	else
637		fprintf(fp, "%#x", cmd & SUBCMDMASK);
638	fprintf(fp, ")");
639	return (true);
640}
641
642bool
643sysdecode_reboot_howto(FILE *fp, int howto, int *rem)
644{
645	bool printed;
646
647	/*
648	 * RB_AUTOBOOT is special in that its value is zero, but it is
649	 * also an implied argument if a different operation is not
650	 * requested via RB_HALT, RB_POWEROFF, or RB_REROOT.
651	 */
652	if (howto != 0 && (howto & (RB_HALT | RB_POWEROFF | RB_REROOT)) == 0) {
653		fputs("RB_AUTOBOOT|", fp);
654		printed = true;
655	} else
656		printed = false;
657	return (print_mask_int(fp, rebootopt, howto, rem) || printed);
658}
659
660bool
661sysdecode_rfork_flags(FILE *fp, int flags, int *rem)
662{
663
664	return (print_mask_int(fp, rforkflags, flags, rem));
665}
666
667const char *
668sysdecode_rlimit(int resource)
669{
670
671	return (lookup_value(rlimit, resource));
672}
673
674const char *
675sysdecode_scheduler_policy(int policy)
676{
677
678	return (lookup_value(schedpolicy, policy));
679}
680
681bool
682sysdecode_sendfile_flags(FILE *fp, int flags, int *rem)
683{
684
685	return (print_mask_int(fp, sendfileflags, flags, rem));
686}
687
688bool
689sysdecode_shmat_flags(FILE *fp, int flags, int *rem)
690{
691
692	return (print_mask_int(fp, shmatflags, flags, rem));
693}
694
695const char *
696sysdecode_shutdown_how(int how)
697{
698
699	return (lookup_value(shutdownhow, how));
700}
701
702const char *
703sysdecode_sigbus_code(int si_code)
704{
705
706	return (lookup_value(sigbuscode, si_code));
707}
708
709const char *
710sysdecode_sigchld_code(int si_code)
711{
712
713	return (lookup_value(sigchldcode, si_code));
714}
715
716const char *
717sysdecode_sigfpe_code(int si_code)
718{
719
720	return (lookup_value(sigfpecode, si_code));
721}
722
723const char *
724sysdecode_sigill_code(int si_code)
725{
726
727	return (lookup_value(sigillcode, si_code));
728}
729
730const char *
731sysdecode_sigsegv_code(int si_code)
732{
733
734	return (lookup_value(sigsegvcode, si_code));
735}
736
737const char *
738sysdecode_sigtrap_code(int si_code)
739{
740
741	return (lookup_value(sigtrapcode, si_code));
742}
743
744const char *
745sysdecode_sigprocmask_how(int how)
746{
747
748	return (lookup_value(sigprocmaskhow, how));
749}
750
751const char *
752sysdecode_socketdomain(int domain)
753{
754
755	return (lookup_value(sockdomain, domain));
756}
757
758const char *
759sysdecode_socket_protocol(int domain, int protocol)
760{
761
762	switch (domain) {
763	case PF_INET:
764	case PF_INET6:
765		return (lookup_value(sockipproto, protocol));
766	default:
767		return (NULL);
768	}
769}
770
771const char *
772sysdecode_sockaddr_family(int sa_family)
773{
774
775	return (lookup_value(sockfamily, sa_family));
776}
777
778const char *
779sysdecode_ipproto(int protocol)
780{
781
782	return (lookup_value(sockipproto, protocol));
783}
784
785const char *
786sysdecode_sockopt_name(int level, int optname)
787{
788
789	if (level == SOL_SOCKET)
790		return (lookup_value(sockopt, optname));
791	if (level == IPPROTO_IP)
792		/* XXX: UNIX domain socket options use a level of 0 also. */
793		return (lookup_value(sockoptip, optname));
794	if (level == IPPROTO_IPV6)
795		return (lookup_value(sockoptipv6, optname));
796	if (level == IPPROTO_SCTP)
797		return (lookup_value(sockoptsctp, optname));
798	if (level == IPPROTO_TCP)
799		return (lookup_value(sockopttcp, optname));
800	if (level == IPPROTO_UDP)
801		return (lookup_value(sockoptudp, optname));
802	if (level == IPPROTO_UDPLITE)
803		return (lookup_value(sockoptudplite, optname));
804	return (NULL);
805}
806
807bool
808sysdecode_thr_create_flags(FILE *fp, int flags, int *rem)
809{
810
811	return (print_mask_int(fp, thrcreateflags, flags, rem));
812}
813
814const char *
815sysdecode_umtx_op(int op)
816{
817
818	return (lookup_value(umtxop, op));
819}
820
821const char *
822sysdecode_vmresult(int result)
823{
824
825	return (lookup_value(vmresult, result));
826}
827
828bool
829sysdecode_wait4_options(FILE *fp, int options, int *rem)
830{
831	bool printed;
832	int opt6;
833
834	/* A flags value of 0 is normal. */
835	if (options == 0) {
836		fputs("0", fp);
837		if (rem != NULL)
838			*rem = 0;
839		return (true);
840	}
841
842	/*
843	 * These flags are implicit and aren't valid flags for wait4()
844	 * directly (though they don't fail with EINVAL).
845	 */
846	opt6 = options & (WEXITED | WTRAPPED);
847	options &= ~opt6;
848	printed = print_mask_int(fp, wait6opt, options, rem);
849	if (rem != NULL)
850		*rem |= opt6;
851	return (printed);
852}
853
854bool
855sysdecode_wait6_options(FILE *fp, int options, int *rem)
856{
857
858	return (print_mask_int(fp, wait6opt, options, rem));
859}
860
861const char *
862sysdecode_whence(int whence)
863{
864
865	return (lookup_value(seekwhence, whence));
866}
867
868const char *
869sysdecode_fcntl_cmd(int cmd)
870{
871
872	return (lookup_value(fcntlcmd, cmd));
873}
874
875static struct name_table fcntl_fd_arg[] = {
876	X(FD_CLOEXEC) X(0) XEND
877};
878
879bool
880sysdecode_fcntl_arg_p(int cmd)
881{
882
883	switch (cmd) {
884	case F_GETFD:
885	case F_GETFL:
886	case F_GETOWN:
887		return (false);
888	default:
889		return (true);
890	}
891}
892
893void
894sysdecode_fcntl_arg(FILE *fp, int cmd, uintptr_t arg, int base)
895{
896	int rem;
897
898	switch (cmd) {
899	case F_SETFD:
900		if (!print_value(fp, fcntl_fd_arg, arg))
901		    print_integer(fp, arg, base);
902		break;
903	case F_SETFL:
904		if (!sysdecode_fcntl_fileflags(fp, arg, &rem))
905			fprintf(fp, "%#x", rem);
906		else if (rem != 0)
907			fprintf(fp, "|%#x", rem);
908		break;
909	case F_GETLK:
910	case F_SETLK:
911	case F_SETLKW:
912		fprintf(fp, "%p", (void *)arg);
913		break;
914	default:
915		print_integer(fp, arg, base);
916		break;
917	}
918}
919
920bool
921sysdecode_mmap_flags(FILE *fp, int flags, int *rem)
922{
923	uintmax_t val;
924	bool printed;
925	int align;
926
927	/*
928	 * MAP_ALIGNED can't be handled directly by print_mask_int().
929	 * MAP_32BIT is also problematic since it isn't defined for
930	 * all platforms.
931	 */
932	printed = false;
933	align = flags & MAP_ALIGNMENT_MASK;
934	val = (unsigned)flags & ~MAP_ALIGNMENT_MASK;
935	print_mask_part(fp, mmapflags, &val, &printed);
936#ifdef MAP_32BIT
937	if (val & MAP_32BIT) {
938		fprintf(fp, "%sMAP_32BIT", printed ? "|" : "");
939		printed = true;
940		val &= ~MAP_32BIT;
941	}
942#endif
943	if (align != 0) {
944		if (printed)
945			fputc('|', fp);
946		if (align == MAP_ALIGNED_SUPER)
947			fputs("MAP_ALIGNED_SUPER", fp);
948		else
949			fprintf(fp, "MAP_ALIGNED(%d)",
950			    align >> MAP_ALIGNMENT_SHIFT);
951		printed = true;
952	}
953	if (rem != NULL)
954		*rem = val;
955	return (printed);
956}
957
958const char *
959sysdecode_pathconf_name(int name)
960{
961
962	return (lookup_value(pathconfname, name));
963}
964
965const char *
966sysdecode_rtprio_function(int function)
967{
968
969	return (lookup_value(rtpriofuncs, function));
970}
971
972bool
973sysdecode_msg_flags(FILE *fp, int flags, int *rem)
974{
975
976	return (print_mask_0(fp, msgflags, flags, rem));
977}
978
979const char *
980sysdecode_sigcode(int sig, int si_code)
981{
982	const char *str;
983
984	str = lookup_value(sigcode, si_code);
985	if (str != NULL)
986		return (str);
987
988	switch (sig) {
989	case SIGILL:
990		return (sysdecode_sigill_code(si_code));
991	case SIGBUS:
992		return (sysdecode_sigbus_code(si_code));
993	case SIGSEGV:
994		return (sysdecode_sigsegv_code(si_code));
995	case SIGFPE:
996		return (sysdecode_sigfpe_code(si_code));
997	case SIGTRAP:
998		return (sysdecode_sigtrap_code(si_code));
999	case SIGCHLD:
1000		return (sysdecode_sigchld_code(si_code));
1001	default:
1002		return (NULL);
1003	}
1004}
1005
1006const char *
1007sysdecode_sysarch_number(int number)
1008{
1009
1010	return (lookup_value(sysarchnum, number));
1011}
1012
1013bool
1014sysdecode_umtx_cvwait_flags(FILE *fp, u_long flags, u_long *rem)
1015{
1016
1017	return (print_mask_0ul(fp, umtxcvwaitflags, flags, rem));
1018}
1019
1020bool
1021sysdecode_umtx_rwlock_flags(FILE *fp, u_long flags, u_long *rem)
1022{
1023
1024	return (print_mask_0ul(fp, umtxrwlockflags, flags, rem));
1025}
1026
1027void
1028sysdecode_cap_rights(FILE *fp, cap_rights_t *rightsp)
1029{
1030	struct name_table *t;
1031	bool comma;
1032
1033	comma = false;
1034	for (t = caprights; t->str != NULL; t++) {
1035		if (cap_rights_is_set(rightsp, t->val)) {
1036			fprintf(fp, "%s%s", comma ? "," : "", t->str);
1037			comma = true;
1038		}
1039	}
1040}
1041