2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Linux for s390 port by D.J. Barrow
8 * <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com>
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44 #include <sys/ucontext.h>
49 #ifndef PTRACE_PEEKUSR
50 # define PTRACE_PEEKUSR PTRACE_PEEKUSER
52 #ifndef PTRACE_POKEUSR
53 # define PTRACE_POKEUSR PTRACE_POKEUSER
55 #elif defined(HAVE_LINUX_PTRACE_H)
57 # ifdef HAVE_STRUCT_IA64_FPREG
58 # define ia64_fpreg XXX_ia64_fpreg
60 # ifdef HAVE_STRUCT_PT_ALL_USER_REGS
61 # define pt_all_user_regs XXX_pt_all_user_regs
63 #include <linux/ptrace.h>
65 # undef pt_all_user_regs
72 # include <asm/ptrace_offsets.h>
75 #if defined (LINUX) && defined (SPARC64)
76 # undef PTRACE_GETREGS
77 # define PTRACE_GETREGS PTRACE_GETREGS64
78 # undef PTRACE_SETREGS
79 # define PTRACE_SETREGS PTRACE_SETREGS64
80 #endif /* LINUX && SPARC64 */
82 #if defined (SPARC) || defined (SPARC64) || defined (MIPS)
84 struct pt_regs si_regs;
87 #elif defined HAVE_ASM_SIGCONTEXT_H
88 #if !defined(IA64) && !defined(X86_64)
89 #include <asm/sigcontext.h>
90 #endif /* !IA64 && !X86_64 */
91 #else /* !HAVE_ASM_SIGCONTEXT_H */
92 #if defined I386 && !defined HAVE_STRUCT_SIGCONTEXT_STRUCT
93 struct sigcontext_struct {
94 unsigned short gs, __gsh;
95 unsigned short fs, __fsh;
96 unsigned short es, __esh;
97 unsigned short ds, __dsh;
106 unsigned long trapno;
109 unsigned short cs, __csh;
110 unsigned long eflags;
111 unsigned long esp_at_signal;
112 unsigned short ss, __ssh;
114 unsigned long oldmask;
118 #if defined M68K && !defined HAVE_STRUCT_SIGCONTEXT
121 unsigned long sc_mask;
122 unsigned long sc_usp;
127 unsigned short sc_sr;
129 unsigned short sc_formatvec;
133 #endif /* !HAVE_ASM_SIGCONTEXT_H */
143 const char *const signalent0[] = {
144 #include "signalent.h"
146 const int nsignals0 = sizeof signalent0 / sizeof signalent0[0];
148 #if SUPPORTED_PERSONALITIES >= 2
149 const char *const signalent1[] = {
150 #include "signalent1.h"
152 const int nsignals1 = sizeof signalent1 / sizeof signalent1[0];
153 #endif /* SUPPORTED_PERSONALITIES >= 2 */
155 #if SUPPORTED_PERSONALITIES >= 3
156 const char *const signalent2[] = {
157 #include "signalent2.h"
159 const int nsignals2 = sizeof signalent2 / sizeof signalent2[0];
160 #endif /* SUPPORTED_PERSONALITIES >= 3 */
162 const char *const *signalent;
165 #if defined(SUNOS4) || defined(FREEBSD)
167 static const struct xlat sigvec_flags[] = {
168 { SV_ONSTACK, "SV_ONSTACK" },
169 { SV_INTERRUPT, "SV_INTERRUPT" },
170 { SV_RESETHAND, "SV_RESETHAND" },
171 { SA_NOCLDSTOP, "SA_NOCLDSTOP" },
175 #endif /* SUNOS4 || FREEBSD */
177 #ifdef HAVE_SIGACTION
179 #if defined LINUX && (defined I386 || defined X86_64)
180 /* The libc headers do not define this constant since it should only be
181 used by the implementation. So wwe define it here. */
183 # define SA_RESTORER 0x04000000
187 static const struct xlat sigact_flags[] = {
189 { SA_RESTORER, "SA_RESTORER" },
192 { SA_STACK, "SA_STACK" },
195 { SA_RESTART, "SA_RESTART" },
198 { SA_INTERRUPT, "SA_INTERRUPT" },
201 { SA_NODEFER, "SA_NODEFER" },
203 #if defined SA_NOMASK && SA_NODEFER != SA_NOMASK
204 { SA_NOMASK, "SA_NOMASK" },
207 { SA_RESETHAND, "SA_RESETHAND" },
209 #if defined SA_ONESHOT && SA_ONESHOT != SA_RESETHAND
210 { SA_ONESHOT, "SA_ONESHOT" },
213 { SA_SIGINFO, "SA_SIGINFO" },
216 { SA_RESETHAND, "SA_RESETHAND" },
219 { SA_ONSTACK, "SA_ONSTACK" },
222 { SA_NODEFER, "SA_NODEFER" },
225 { SA_NOCLDSTOP, "SA_NOCLDSTOP" },
228 { SA_NOCLDWAIT, "SA_NOCLDWAIT" },
231 { _SA_BSDCALL, "_SA_BSDCALL" },
234 { SA_NOPTRACE, "SA_NOPTRACE" },
239 static const struct xlat sigprocmaskcmds[] = {
240 { SIG_BLOCK, "SIG_BLOCK" },
241 { SIG_UNBLOCK, "SIG_UNBLOCK" },
242 { SIG_SETMASK, "SIG_SETMASK" },
244 { SIG_SETMASK32,"SIG_SETMASK32" },
249 #endif /* HAVE_SIGACTION */
251 /* Anonymous realtime signals. */
252 /* Under glibc 2.1, SIGRTMIN et al are functions, but __SIGRTMIN is a
253 constant. This is what we want. Otherwise, just use SIGRTMIN. */
256 #define __SIGRTMIN SIGRTMIN
257 #define __SIGRTMAX SIGRTMAX /* likewise */
265 if (sig >= 0 && sig < nsignals) {
266 return signalent[sig];
268 } else if (sig >= __SIGRTMIN && sig <= __SIGRTMAX) {
269 sprintf(buf, "SIGRT_%ld", (long)(sig - __SIGRTMIN));
271 #endif /* SIGRTMIN */
273 sprintf(buf, "%d", sig);
280 long_to_sigset(long l, sigset_t *s)
288 copy_sigset_len(struct tcb *tcp, long addr, sigset_t *s, int len)
290 if (len > sizeof(*s))
293 if (umoven(tcp, addr, len, (char *)s) < 0)
299 /* Original sigset is unsigned long */
300 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(long))
302 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(sigset_t))
306 sprintsigmask(const char *str, sigset_t *mask, int rt)
307 /* set might include realtime sigs */
313 static char outstr[8 * sizeof(sigset_t) * 8];
316 s = outstr + strlen(outstr);
321 maxsigs = __SIGRTMAX; /* instead */
323 for (i = 1; i < maxsigs; i++) {
324 if (sigismember(mask, i) == 1)
327 if (nsigs >= nsignals * 2 / 3) {
329 for (i = 1; i < maxsigs; i++) {
330 switch (sigismember(mask, i)) {
342 for (i = 1; i < maxsigs; i++) {
343 if (sigismember(mask, i) == 1) {
344 /* real-time signals on solaris don't have
348 sprintf(s, format, signalent[i] + 3);
351 else if (i >= __SIGRTMIN && i <= __SIGRTMAX) {
353 sprintf(tsig, "RT_%u", i - __SIGRTMIN);
354 sprintf(s, format, tsig);
356 #endif /* SIGRTMIN */
359 sprintf(tsig, "%u", i);
360 sprintf(s, format, tsig);
372 printsigmask(sigset_t *mask, int rt)
374 tprintf("%s", sprintsigmask("", mask, rt));
380 tprintf("%s", signame(nr));
384 print_sigset(struct tcb *tcp, long addr, int rt)
390 else if (copy_sigset(tcp, addr, &ss) < 0)
391 tprintf("%#lx", addr);
393 printsigmask(&ss, rt);
399 #define ILL_ILLOPC 1 /* illegal opcode */
400 #define ILL_ILLOPN 2 /* illegal operand */
401 #define ILL_ILLADR 3 /* illegal addressing mode */
402 #define ILL_ILLTRP 4 /* illegal trap */
403 #define ILL_PRVOPC 5 /* privileged opcode */
404 #define ILL_PRVREG 6 /* privileged register */
405 #define ILL_COPROC 7 /* coprocessor error */
406 #define ILL_BADSTK 8 /* internal stack error */
407 #define FPE_INTDIV 1 /* integer divide by zero */
408 #define FPE_INTOVF 2 /* integer overflow */
409 #define FPE_FLTDIV 3 /* floating point divide by zero */
410 #define FPE_FLTOVF 4 /* floating point overflow */
411 #define FPE_FLTUND 5 /* floating point underflow */
412 #define FPE_FLTRES 6 /* floating point inexact result */
413 #define FPE_FLTINV 7 /* floating point invalid operation */
414 #define FPE_FLTSUB 8 /* subscript out of range */
415 #define SEGV_MAPERR 1 /* address not mapped to object */
416 #define SEGV_ACCERR 2 /* invalid permissions for mapped object */
417 #define BUS_ADRALN 1 /* invalid address alignment */
418 #define BUS_ADRERR 2 /* non-existant physical address */
419 #define BUS_OBJERR 3 /* object specific hardware error */
420 #define TRAP_BRKPT 1 /* process breakpoint */
421 #define TRAP_TRACE 2 /* process trace trap */
422 #define CLD_EXITED 1 /* child has exited */
423 #define CLD_KILLED 2 /* child was killed */
424 #define CLD_DUMPED 3 /* child terminated abnormally */
425 #define CLD_TRAPPED 4 /* traced child has trapped */
426 #define CLD_STOPPED 5 /* child has stopped */
427 #define CLD_CONTINUED 6 /* stopped child has continued */
428 #define POLL_IN 1 /* data input available */
429 #define POLL_OUT 2 /* output buffers available */
430 #define POLL_MSG 3 /* input message available */
431 #define POLL_ERR 4 /* i/o error */
432 #define POLL_PRI 5 /* high priority input available */
433 #define POLL_HUP 6 /* device disconnected */
434 #define SI_KERNEL 0x80 /* sent by kernel */
435 #define SI_USER 0 /* sent by kill, sigsend, raise */
436 #define SI_QUEUE -1 /* sent by sigqueue */
437 #define SI_TIMER -2 /* sent by timer expiration */
438 #define SI_MESGQ -3 /* sent by real time mesq state change */
439 #define SI_ASYNCIO -4 /* sent by AIO completion */
440 #define SI_SIGIO -5 /* sent by SIGIO */
441 #define SI_TKILL -6 /* sent by tkill */
442 #define SI_ASYNCNL -60 /* sent by asynch name lookup completion */
444 #define SI_FROMUSER(sip) ((sip)->si_code <= 0)
448 #if __GLIBC_MINOR__ < 1
449 /* Type for data associated with a signal. */
456 # define __SI_MAX_SIZE 128
457 # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof(int)) - 3)
459 typedef struct siginfo
461 int si_signo; /* Signal number. */
462 int si_errno; /* If non-zero, an errno value associated with
463 this signal, as defined in <errno.h>. */
464 int si_code; /* Signal code. */
468 int _pad[__SI_PAD_SIZE];
473 __pid_t si_pid; /* Sending process ID. */
474 __uid_t si_uid; /* Real user ID of sending process. */
477 /* POSIX.1b timers. */
480 unsigned int _timer1;
481 unsigned int _timer2;
484 /* POSIX.1b signals. */
487 __pid_t si_pid; /* Sending process ID. */
488 __uid_t si_uid; /* Real user ID of sending process. */
489 sigval_t si_sigval; /* Signal value. */
495 __pid_t si_pid; /* Which child. */
496 int si_status; /* Exit value or signal. */
501 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
504 void *si_addr; /* Faulting insn/memory ref. */
510 int si_band; /* Band event for SIGPOLL. */
516 #define si_pid _sifields._kill.si_pid
517 #define si_uid _sifields._kill.si_uid
518 #define si_status _sifields._sigchld.si_status
519 #define si_utime _sifields._sigchld.si_utime
520 #define si_stime _sifields._sigchld.si_stime
521 #define si_value _sifields._rt.si_sigval
522 #define si_int _sifields._rt.si_sigval.sival_int
523 #define si_ptr _sifields._rt.si_sigval.sival_ptr
524 #define si_addr _sifields._sigfault.si_addr
525 #define si_band _sifields._sigpoll.si_band
526 #define si_fd _sifields._sigpoll.si_fd
532 #if defined (SVR4) || defined (LINUX)
534 static const struct xlat siginfo_codes[] = {
536 { SI_KERNEL, "SI_KERNEL" },
539 { SI_USER, "SI_USER" },
542 { SI_QUEUE, "SI_QUEUE" },
545 { SI_TIMER, "SI_TIMER" },
548 { SI_MESGQ, "SI_MESGQ" },
551 { SI_ASYNCIO, "SI_ASYNCIO" },
554 { SI_SIGIO, "SI_SIGIO" },
557 { SI_TKILL, "SI_TKILL" },
560 { SI_ASYNCNL, "SI_ASYNCNL" },
563 { SI_NOINFO, "SI_NOINFO" },
566 { SI_LWP, "SI_LWP" },
571 static const struct xlat sigill_codes[] = {
572 { ILL_ILLOPC, "ILL_ILLOPC" },
573 { ILL_ILLOPN, "ILL_ILLOPN" },
574 { ILL_ILLADR, "ILL_ILLADR" },
575 { ILL_ILLTRP, "ILL_ILLTRP" },
576 { ILL_PRVOPC, "ILL_PRVOPC" },
577 { ILL_PRVREG, "ILL_PRVREG" },
578 { ILL_COPROC, "ILL_COPROC" },
579 { ILL_BADSTK, "ILL_BADSTK" },
583 static const struct xlat sigfpe_codes[] = {
584 { FPE_INTDIV, "FPE_INTDIV" },
585 { FPE_INTOVF, "FPE_INTOVF" },
586 { FPE_FLTDIV, "FPE_FLTDIV" },
587 { FPE_FLTOVF, "FPE_FLTOVF" },
588 { FPE_FLTUND, "FPE_FLTUND" },
589 { FPE_FLTRES, "FPE_FLTRES" },
590 { FPE_FLTINV, "FPE_FLTINV" },
591 { FPE_FLTSUB, "FPE_FLTSUB" },
595 static const struct xlat sigtrap_codes[] = {
596 { TRAP_BRKPT, "TRAP_BRKPT" },
597 { TRAP_TRACE, "TRAP_TRACE" },
601 static const struct xlat sigchld_codes[] = {
602 { CLD_EXITED, "CLD_EXITED" },
603 { CLD_KILLED, "CLD_KILLED" },
604 { CLD_DUMPED, "CLD_DUMPED" },
605 { CLD_TRAPPED, "CLD_TRAPPED" },
606 { CLD_STOPPED, "CLD_STOPPED" },
607 { CLD_CONTINUED,"CLD_CONTINUED" },
611 static const struct xlat sigpoll_codes[] = {
612 { POLL_IN, "POLL_IN" },
613 { POLL_OUT, "POLL_OUT" },
614 { POLL_MSG, "POLL_MSG" },
615 { POLL_ERR, "POLL_ERR" },
616 { POLL_PRI, "POLL_PRI" },
617 { POLL_HUP, "POLL_HUP" },
621 static const struct xlat sigprof_codes[] = {
623 { PROF_SIG, "PROF_SIG" },
629 static const struct xlat sigemt_codes[] = {
631 { EMT_TAGOVF, "EMT_TAGOVF" },
637 static const struct xlat sigsegv_codes[] = {
638 { SEGV_MAPERR, "SEGV_MAPERR" },
639 { SEGV_ACCERR, "SEGV_ACCERR" },
643 static const struct xlat sigbus_codes[] = {
644 { BUS_ADRALN, "BUS_ADRALN" },
645 { BUS_ADRERR, "BUS_ADRERR" },
646 { BUS_OBJERR, "BUS_OBJERR" },
651 printsiginfo(siginfo_t *sip, int verbose)
655 if (sip->si_signo == 0) {
659 tprintf("{si_signo=");
660 printsignal(sip->si_signo);
661 code = xlookup(siginfo_codes, sip->si_code);
663 switch (sip->si_signo) {
665 code = xlookup(sigtrap_codes, sip->si_code);
668 code = xlookup(sigchld_codes, sip->si_code);
671 code = xlookup(sigpoll_codes, sip->si_code);
674 code = xlookup(sigprof_codes, sip->si_code);
677 code = xlookup(sigill_codes, sip->si_code);
681 code = xlookup(sigemt_codes, sip->si_code);
685 code = xlookup(sigfpe_codes, sip->si_code);
688 code = xlookup(sigsegv_codes, sip->si_code);
691 code = xlookup(sigbus_codes, sip->si_code);
696 tprintf(", si_code=%s", code);
698 tprintf(", si_code=%#x", sip->si_code);
700 if (sip->si_code != SI_NOINFO)
704 if (sip->si_errno < 0 || sip->si_errno >= nerrnos)
705 tprintf(", si_errno=%d", sip->si_errno);
707 tprintf(", si_errno=%s",
708 errnoent[sip->si_errno]);
711 if (SI_FROMUSER(sip)) {
712 tprintf(", si_pid=%lu, si_uid=%lu",
713 (unsigned long) sip->si_pid,
714 (unsigned long) sip->si_uid);
715 switch (sip->si_code) {
726 tprintf(", si_value=%d", sip->si_int);
736 tprintf(", si_value={int=%u, ptr=%#lx}",
738 (unsigned long) sip->si_ptr);
744 #endif /* SI_FROMUSER */
746 switch (sip->si_signo) {
748 tprintf(", si_pid=%ld, si_status=",
750 if (sip->si_code == CLD_EXITED)
751 tprintf("%d", sip->si_status);
753 printsignal(sip->si_status);
758 tprintf(", si_utime=%lu, si_stime=%lu",
763 case SIGILL: case SIGFPE:
764 case SIGSEGV: case SIGBUS:
765 tprintf(", si_addr=%#lx",
766 (unsigned long) sip->si_addr);
769 switch (sip->si_code) {
770 case POLL_IN: case POLL_OUT: case POLL_MSG:
771 tprintf(", si_band=%ld",
772 (long) sip->si_band);
778 if (sip->si_pid || sip->si_uid)
779 tprintf(", si_pid=%lu, si_uid=%lu",
780 (unsigned long) sip->si_pid,
781 (unsigned long) sip->si_uid);
787 tprintf(", si_value={int=%u, ptr=%#lx}",
789 (unsigned long) sip->si_ptr);
799 #endif /* SVR4 || LINUX */
804 parse_sigset_t(const char *str, sigset_t *set)
812 p = strchr(str, '\n');
814 p = strchr(str, '\0');
815 for (i = 0; p-- > str; i += 4) {
816 if (*p >= '0' && *p <= '9')
818 else if (*p >= 'a' && *p <= 'f')
819 digit = *p - 'a' + 10;
820 else if (*p >= 'A' && *p <= 'F')
821 digit = *p - 'A' + 10;
825 sigaddset(set, i + 1);
827 sigaddset(set, i + 2);
829 sigaddset(set, i + 3);
831 sigaddset(set, i + 4);
838 * Check process TCP for the disposition of signal SIG.
839 * Return 1 if the process would somehow manage to survive signal SIG,
840 * else return 0. This routine will never be called with SIGKILL.
843 sigishandled(struct tcb *tcp, int sig)
851 sigset_t ignored, caught;
855 * Since procfs doesn't interfere with wait I think it is safe
856 * to punt on this question. If not, the information is there.
868 #if defined(SIGURG) && SIGURG != SIGIO
872 /* Gloria Gaynor says ... */
880 /* This is incredibly costly but it's worth it. */
881 /* NOTE: LinuxThreads internally uses SIGRTMIN, SIGRTMIN + 1 and
882 SIGRTMIN + 2, so we can't use the obsolete /proc/%d/stat which
883 doesn't handle real-time signals). */
884 sprintf(sname, "/proc/%d/status", tcp->pid);
885 if ((sfd = open(sname, O_RDONLY)) == -1) {
889 i = read(sfd, buf, sizeof(buf));
893 * Skip the extraneous fields. We need to skip
894 * command name has any spaces in it. So be it.
896 s = strstr(buf, "SigIgn:\t");
899 fprintf(stderr, "/proc/pid/status format error\n");
902 parse_sigset_t(s + 8, &ignored);
904 s = strstr(buf, "SigCgt:\t");
907 fprintf(stderr, "/proc/pid/status format error\n");
910 parse_sigset_t(s + 8, &caught);
913 fprintf(stderr, "sigs: %016qx %016qx (sig=%d)\n",
914 *(long long *) &ignored, *(long long *) &caught, sig);
916 if (sigismember(&ignored, sig) || sigismember(&caught, sig))
923 if (upeek(tcp, uoff(u_signal[0]) + sig*sizeof(u_signal),
924 (long *) &u_signal) < 0) {
927 if (u_signal != SIG_DFL)
934 #if defined(SUNOS4) || defined(FREEBSD)
937 sys_sigvec(struct tcb *tcp)
943 printsignal(tcp->u_arg[0]);
945 addr = tcp->u_arg[1];
947 addr = tcp->u_arg[2];
951 else if (!verbose(tcp))
952 tprintf("%#lx", addr);
953 else if (umove(tcp, addr, &sv) < 0)
956 switch ((int) sv.sv_handler) {
958 tprintf("{SIG_ERR}");
961 tprintf("{SIG_DFL}");
964 if (tcp->u_arg[0] == SIGTRAP) {
965 tcp->flags |= TCB_SIGTRAPPED;
966 kill(tcp->pid, SIGSTOP);
968 tprintf("{SIG_IGN}");
971 if (tcp->u_arg[0] == SIGTRAP) {
972 tcp->flags |= TCB_SIGTRAPPED;
973 kill(tcp->pid, SIGSTOP);
978 if (tcp->u_arg[0] == SIGTRAP) {
979 tcp->flags |= TCB_SIGTRAPPED;
980 kill(tcp->pid, SIGSTOP);
982 tprintf("{%#lx, ", (unsigned long) sv.sv_handler);
983 printsigmask(&sv.sv_mask, 0);
985 printflags(sigvec_flags, sv.sv_flags, "SV_???");
995 sys_sigpause(struct tcb *tcp)
997 if (entering(tcp)) { /* WTA: UD had a bug here: he forgot the braces */
999 long_to_sigset(tcp->u_arg[0], &sigm);
1000 printsigmask(&sigm, 0);
1006 sys_sigstack(struct tcb *tcp)
1012 addr = tcp->u_arg[0];
1014 addr = tcp->u_arg[1];
1017 else if (umove(tcp, addr, &ss) < 0)
1018 tprintf("%#lx", addr);
1020 tprintf("{ss_sp %#lx ", (unsigned long) ss.ss_sp);
1021 tprintf("ss_onstack %s}", ss.ss_onstack ? "YES" : "NO");
1029 sys_sigcleanup(struct tcb *tcp)
1034 #endif /* SUNOS4 || FREEBSD */
1039 sys_sigsetmask(struct tcb *tcp)
1041 if (entering(tcp)) {
1043 long_to_sigset(tcp->u_arg[0], &sigm);
1044 printsigmask(&sigm, 0);
1046 if ((tcp->u_arg[0] & sigmask(SIGTRAP))) {
1047 /* Mark attempt to block SIGTRAP */
1048 tcp->flags |= TCB_SIGTRAPPED;
1049 /* Send unblockable signal */
1050 kill(tcp->pid, SIGSTOP);
1052 #endif /* !USE_PROCFS */
1054 else if (!syserror(tcp)) {
1056 long_to_sigset(tcp->u_rval, &sigm);
1057 tcp->auxstr = sprintsigmask("old mask ", &sigm, 0);
1059 return RVAL_HEX | RVAL_STR;
1064 #if defined(SUNOS4) || defined(FREEBSD)
1066 sys_sigblock(struct tcb *tcp)
1068 return sys_sigsetmask(tcp);
1070 #endif /* SUNOS4 || FREEBSD */
1074 #ifdef HAVE_SIGACTION
1077 struct old_sigaction {
1078 __sighandler_t __sa_handler;
1079 unsigned long sa_mask;
1080 unsigned long sa_flags;
1081 void (*sa_restorer)(void);
1083 #define SA_HANDLER __sa_handler
1087 #define SA_HANDLER sa_handler
1091 sys_sigaction(struct tcb *tcp)
1096 struct old_sigaction sa;
1098 struct sigaction sa;
1102 if (entering(tcp)) {
1103 printsignal(tcp->u_arg[0]);
1105 addr = tcp->u_arg[1];
1107 addr = tcp->u_arg[2];
1110 else if (!verbose(tcp))
1111 tprintf("%#lx", addr);
1112 else if (umove(tcp, addr, &sa) < 0)
1115 /* Architectures using function pointers, like
1116 * hppa, may need to manipulate the function pointer
1117 * to compute the result of a comparison. However,
1118 * the SA_HANDLER function pointer exists only in
1119 * the address space of the traced process, and can't
1120 * be manipulated by strace. In order to prevent the
1121 * compiler from generating code to manipulate
1122 * SA_HANDLER we cast the function pointers to long. */
1123 if ((long)sa.SA_HANDLER == (long)SIG_ERR)
1124 tprintf("{SIG_ERR, ");
1125 else if ((long)sa.SA_HANDLER == (long)SIG_DFL)
1126 tprintf("{SIG_DFL, ");
1127 else if ((long)sa.SA_HANDLER == (long)SIG_IGN) {
1129 if (tcp->u_arg[0] == SIGTRAP) {
1130 tcp->flags |= TCB_SIGTRAPPED;
1131 kill(tcp->pid, SIGSTOP);
1133 #endif /* !USE_PROCFS */
1134 tprintf("{SIG_IGN, ");
1138 if (tcp->u_arg[0] == SIGTRAP) {
1139 tcp->flags |= TCB_SIGTRAPPED;
1140 kill(tcp->pid, SIGSTOP);
1142 #endif /* !USE_PROCFS */
1143 tprintf("{%#lx, ", (long) sa.SA_HANDLER);
1145 printsigmask(&sa.sa_mask, 0);
1147 long_to_sigset(sa.sa_mask, &sigset);
1148 printsigmask(&sigset, 0);
1151 printflags(sigact_flags, sa.sa_flags, "SA_???");
1153 if (sa.sa_flags & SA_RESTORER)
1154 tprintf(", %p", sa.sa_restorer);
1163 tprintf(", %#lx", (unsigned long) sa.sa_restorer);
1169 sys_signal(struct tcb *tcp)
1171 if (entering(tcp)) {
1172 printsignal(tcp->u_arg[0]);
1174 switch (tcp->u_arg[1]) {
1175 case (long) SIG_ERR:
1178 case (long) SIG_DFL:
1181 case (long) SIG_IGN:
1183 if (tcp->u_arg[0] == SIGTRAP) {
1184 tcp->flags |= TCB_SIGTRAPPED;
1185 kill(tcp->pid, SIGSTOP);
1187 #endif /* !USE_PROCFS */
1192 if (tcp->u_arg[0] == SIGTRAP) {
1193 tcp->flags |= TCB_SIGTRAPPED;
1194 kill(tcp->pid, SIGSTOP);
1196 #endif /* !USE_PROCFS */
1197 tprintf("%#lx", tcp->u_arg[1]);
1201 else if (!syserror(tcp)) {
1202 switch (tcp->u_rval) {
1203 case (long) SIG_ERR:
1204 tcp->auxstr = "SIG_ERR"; break;
1205 case (long) SIG_DFL:
1206 tcp->auxstr = "SIG_DFL"; break;
1207 case (long) SIG_IGN:
1208 tcp->auxstr = "SIG_IGN"; break;
1212 return RVAL_HEX | RVAL_STR;
1219 sys_sighold(struct tcb *tcp)
1221 if (entering(tcp)) {
1222 printsignal(tcp->u_arg[0]);
1228 #endif /* HAVE_SIGACTION */
1233 sys_sigreturn(struct tcb *tcp)
1236 if (entering(tcp)) {
1237 struct pt_regs regs;
1238 struct sigcontext_struct sc;
1240 if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (void *)®s) == -1)
1242 if (umove(tcp, regs.ARM_sp, &sc) < 0)
1245 tcp->u_arg[1] = sc.oldmask;
1248 tcp->u_rval = tcp->u_error = 0;
1249 if (tcp->u_arg[0] == 0)
1251 long_to_sigset(tcp->u_arg[1], &sigm);
1252 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1253 return RVAL_NONE | RVAL_STR;
1256 #elif defined(S390) || defined(S390X)
1257 if (entering(tcp)) {
1259 struct sigcontext_struct sc;
1261 if (upeek(tcp, PT_GPR15, &usp) < 0)
1263 if (umove(tcp, usp+__SIGNAL_FRAMESIZE, &sc) < 0)
1266 memcpy(&tcp->u_arg[1], &sc.oldmask[0], sizeof(sigset_t));
1268 tcp->u_rval = tcp->u_error = 0;
1269 if (tcp->u_arg[0] == 0)
1271 tcp->auxstr = sprintsigmask("mask now ", (sigset_t *)&tcp->u_arg[1], 0);
1272 return RVAL_NONE | RVAL_STR;
1276 if (entering(tcp)) {
1278 struct sigcontext_struct sc;
1280 if (upeek(tcp, 4*UESP, &esp) < 0)
1282 if (umove(tcp, esp, &sc) < 0)
1285 tcp->u_arg[1] = sc.oldmask;
1289 tcp->u_rval = tcp->u_error = 0;
1290 if (tcp->u_arg[0] == 0)
1292 long_to_sigset(tcp->u_arg[1], &sigm);
1293 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1294 return RVAL_NONE | RVAL_STR;
1298 if (entering(tcp)) {
1299 struct sigcontext sc;
1301 /* offset of sigcontext in the kernel's sigframe structure: */
1302 # define SIGFRAME_SC_OFFSET 0x90
1304 if (upeek(tcp, PT_R12, &sp) < 0)
1306 if (umove(tcp, sp + 16 + SIGFRAME_SC_OFFSET, &sc) < 0)
1309 memcpy(tcp->u_arg + 1, &sc.sc_mask, sizeof(sc.sc_mask));
1313 tcp->u_rval = tcp->u_error = 0;
1314 if (tcp->u_arg[0] == 0)
1316 memcpy(&sigm, tcp->u_arg + 1, sizeof(sigm));
1317 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1318 return RVAL_NONE | RVAL_STR;
1321 #elif defined(POWERPC)
1322 if (entering(tcp)) {
1324 struct sigcontext_struct sc;
1326 if (upeek(tcp, sizeof(unsigned long)*PT_R1, &esp) < 0)
1328 /* Skip dummy stack frame. */
1330 if (current_personality == 0)
1337 if (umove(tcp, esp, &sc) < 0)
1340 tcp->u_arg[1] = sc.oldmask;
1344 tcp->u_rval = tcp->u_error = 0;
1345 if (tcp->u_arg[0] == 0)
1347 long_to_sigset(tcp->u_arg[1], &sigm);
1348 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1349 return RVAL_NONE | RVAL_STR;
1353 if (entering(tcp)) {
1355 struct sigcontext sc;
1357 if (upeek(tcp, 4*PT_USP, &usp) < 0)
1359 if (umove(tcp, usp, &sc) < 0)
1362 tcp->u_arg[1] = sc.sc_mask;
1366 tcp->u_rval = tcp->u_error = 0;
1367 if (tcp->u_arg[0] == 0)
1369 long_to_sigset(tcp->u_arg[1], &sigm);
1370 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1371 return RVAL_NONE | RVAL_STR;
1374 #elif defined(ALPHA)
1375 if (entering(tcp)) {
1377 struct sigcontext_struct sc;
1379 if (upeek(tcp, REG_FP, &fp) < 0)
1381 if (umove(tcp, fp, &sc) < 0)
1384 tcp->u_arg[1] = sc.sc_mask;
1388 tcp->u_rval = tcp->u_error = 0;
1389 if (tcp->u_arg[0] == 0)
1391 long_to_sigset(tcp->u_arg[1], &sigm);
1392 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1393 return RVAL_NONE | RVAL_STR;
1396 #elif defined (SPARC) || defined (SPARC64)
1397 if (entering(tcp)) {
1399 struct pt_regs regs;
1402 if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
1403 perror("sigreturn: PTRACE_GETREGS");
1406 i1 = regs.u_regs[U_REG_O1];
1407 if (umove(tcp, i1, &si) < 0) {
1408 perror("sigreturn: umove");
1412 tcp->u_arg[1] = si.si_mask;
1415 tcp->u_rval = tcp->u_error = 0;
1416 if (tcp->u_arg[0] == 0)
1418 long_to_sigset(tcp->u_arg[1], &sigm);
1419 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1420 return RVAL_NONE | RVAL_STR;
1423 #elif defined (LINUX_MIPSN32) || defined (LINUX_MIPSN64)
1424 /* This decodes rt_sigreturn. The 64-bit ABIs do not have
1426 if (entering(tcp)) {
1430 if (upeek(tcp, REG_SP, &sp) < 0)
1432 /* There are six words followed by a 128-byte siginfo. */
1433 sp = sp + 6 * 4 + 128;
1434 if (umove(tcp, sp, &uc) < 0)
1437 tcp->u_arg[1] = *(long *) &uc.uc_sigmask;
1440 tcp->u_rval = tcp->u_error = 0;
1441 if (tcp->u_arg[0] == 0)
1443 long_to_sigset(tcp->u_arg[1], &sigm);
1444 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1445 return RVAL_NONE | RVAL_STR;
1449 if (entering(tcp)) {
1451 struct pt_regs regs;
1454 if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
1455 perror("sigreturn: PTRACE_GETREGS");
1459 if (umove(tcp, sp, &si) < 0)
1462 tcp->u_arg[1] = si.si_mask;
1465 tcp->u_rval = tcp->u_error = 0;
1466 if (tcp->u_arg[0] == 0)
1468 long_to_sigset(tcp->u_arg[1], &sigm);
1469 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1470 return RVAL_NONE | RVAL_STR;
1473 #elif defined(CRISV10) || defined(CRISV32)
1474 if (entering(tcp)) {
1475 struct sigcontext sc;
1476 long regs[PT_MAX+1];
1478 if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long)regs) < 0) {
1479 perror("sigreturn: PTRACE_GETREGS");
1482 if (umove(tcp, regs[PT_USP], &sc) < 0)
1485 tcp->u_arg[1] = sc.oldmask;
1488 tcp->u_rval = tcp->u_error = 0;
1489 if (tcp->u_arg[0] == 0)
1491 long_to_sigset(tcp->u_arg[1], &sigm);
1492 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1493 return RVAL_NONE | RVAL_STR;
1497 if (entering(tcp)) {
1501 /* offset of ucontext in the kernel's sigframe structure */
1502 # define SIGFRAME_UC_OFFSET C_ABI_SAVE_AREA_SIZE + sizeof(struct siginfo)
1504 if (upeek(tcp, PTREGS_OFFSET_SP, &sp) < 0)
1506 if (umove(tcp, sp + SIGFRAME_UC_OFFSET, &uc) < 0)
1509 memcpy(tcp->u_arg + 1, &uc.uc_sigmask, sizeof(uc.uc_sigmask));
1513 tcp->u_rval = tcp->u_error = 0;
1514 if (tcp->u_arg[0] == 0)
1516 memcpy(&sigm, tcp->u_arg + 1, sizeof(sigm));
1517 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1518 return RVAL_NONE | RVAL_STR;
1521 #elif defined(MICROBLAZE)
1522 /* TODO: Verify that this is correct... */
1523 if (entering(tcp)) {
1524 struct sigcontext sc;
1527 /* Read r1, the stack pointer. */
1528 if (upeek(tcp, 1 * 4, &sp) < 0)
1530 if (umove(tcp, sp, &sc) < 0)
1533 tcp->u_arg[1] = sc.oldmask;
1536 tcp->u_rval = tcp->u_error = 0;
1537 if (tcp->u_arg[0] == 0)
1539 long_to_sigset(tcp->u_arg[1], &sigm);
1540 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1541 return RVAL_NONE | RVAL_STR;
1545 #warning No sys_sigreturn() for this architecture
1546 #warning (no problem, just a reminder :-)
1552 sys_siggetmask(struct tcb *tcp)
1556 long_to_sigset(tcp->u_rval, &sigm);
1557 tcp->auxstr = sprintsigmask("mask ", &sigm, 0);
1559 return RVAL_HEX | RVAL_STR;
1563 sys_sigsuspend(struct tcb *tcp)
1565 if (entering(tcp)) {
1567 long_to_sigset(tcp->u_arg[2], &sigm);
1568 printsigmask(&sigm, 0);
1575 #if defined(SVR4) || defined(FREEBSD)
1578 sys_sigsuspend(struct tcb *tcp)
1582 if (entering(tcp)) {
1583 if (umove(tcp, tcp->u_arg[0], &sigset) < 0)
1586 printsigmask(&sigset, 0);
1591 static const struct xlat ucontext_flags[] = {
1592 { UC_SIGMASK, "UC_SIGMASK" },
1593 { UC_STACK, "UC_STACK" },
1594 { UC_CPU, "UC_CPU" },
1596 { UC_FPU, "UC_FPU" },
1599 { UC_INTR, "UC_INTR" },
1603 #endif /* !FREEBSD */
1604 #endif /* SVR4 || FREEBSD */
1606 #if defined SVR4 || defined LINUX || defined FREEBSD
1607 #if defined LINUX && !defined SS_ONSTACK
1608 #define SS_ONSTACK 1
1609 #define SS_DISABLE 2
1610 #if __GLIBC_MINOR__ == 0
1620 #define stack_t struct sigaltstack
1623 static const struct xlat sigaltstack_flags[] = {
1624 { SS_ONSTACK, "SS_ONSTACK" },
1625 { SS_DISABLE, "SS_DISABLE" },
1632 printcontext(struct tcb *tcp, ucontext_t *ucp)
1636 tprintf("uc_flags=");
1637 printflags(ucontext_flags, ucp->uc_flags, "UC_???");
1638 tprintf(", uc_link=%#lx, ", (unsigned long) ucp->uc_link);
1640 tprintf("uc_sigmask=");
1641 printsigmask(&ucp->uc_sigmask, 0);
1643 tprintf(", uc_stack={ss_sp=%#lx, ss_size=%d, ss_flags=",
1644 (unsigned long) ucp->uc_stack.ss_sp,
1645 ucp->uc_stack.ss_size);
1646 printflags(sigaltstack_flags, ucp->uc_stack.ss_flags, "SS_???");
1653 sys_getcontext(struct tcb *tcp)
1659 tprintf("%#lx", tcp->u_arg[0]);
1660 else if (!tcp->u_arg[0])
1662 else if (umove(tcp, tcp->u_arg[0], &uc) < 0)
1665 printcontext(tcp, &uc);
1671 sys_setcontext(struct tcb *tcp)
1675 if (entering(tcp)) {
1678 else if (umove(tcp, tcp->u_arg[0], &uc) < 0)
1681 printcontext(tcp, &uc);
1684 tcp->u_rval = tcp->u_error = 0;
1685 if (tcp->u_arg[0] == 0)
1694 #if defined(LINUX) || defined(FREEBSD)
1697 print_stack_t(struct tcb *tcp, unsigned long addr)
1700 if (umove(tcp, addr, &ss) < 0)
1702 tprintf("{ss_sp=%#lx, ss_flags=", (unsigned long) ss.ss_sp);
1703 printflags(sigaltstack_flags, ss.ss_flags, "SS_???");
1704 tprintf(", ss_size=%lu}", (unsigned long) ss.ss_size);
1709 sys_sigaltstack(struct tcb *tcp)
1711 if (entering(tcp)) {
1712 if (tcp->u_arg[0] == 0)
1714 else if (print_stack_t(tcp, tcp->u_arg[0]) < 0)
1719 if (tcp->u_arg[1] == 0)
1721 else if (print_stack_t(tcp, tcp->u_arg[1]) < 0)
1728 #ifdef HAVE_SIGACTION
1731 sys_sigprocmask(struct tcb *tcp)
1734 if (entering(tcp)) {
1735 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1737 printsigmask(tcp->u_arg[1], 0);
1739 else if (!syserror(tcp)) {
1740 tcp->auxstr = sprintsigmask("old mask ", tcp->u_rval, 0);
1741 return RVAL_HEX | RVAL_STR;
1744 if (entering(tcp)) {
1746 if (tcp->u_arg[0] == 0)
1750 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1752 print_sigset(tcp, tcp->u_arg[1], 0);
1758 else if (syserror(tcp))
1759 tprintf("%#lx", tcp->u_arg[2]);
1761 print_sigset(tcp, tcp->u_arg[2], 0);
1767 #endif /* HAVE_SIGACTION */
1770 sys_kill(struct tcb *tcp)
1772 if (entering(tcp)) {
1774 * Sign-extend a 32-bit value when that's what it is.
1776 long pid = tcp->u_arg[0];
1777 if (personality_wordsize[current_personality] < sizeof pid)
1778 pid = (long) (int) pid;
1779 tprintf("%ld, %s", pid, signame(tcp->u_arg[1]));
1784 #if defined(FREEBSD) || defined(SUNOS4)
1786 sys_killpg(struct tcb *tcp)
1788 return sys_kill(tcp);
1790 #endif /* FREEBSD || SUNOS4 */
1794 sys_tgkill(struct tcb *tcp)
1796 if (entering(tcp)) {
1797 tprintf("%ld, %ld, %s",
1798 tcp->u_arg[0], tcp->u_arg[1], signame(tcp->u_arg[2]));
1805 sys_sigpending(struct tcb *tcp)
1811 tprintf("%#lx", tcp->u_arg[0]);
1812 else if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1815 printsigmask(&sigset, 0);
1821 int sys_sigwait(struct tcb *tcp)
1825 if (entering(tcp)) {
1826 if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1829 printsigmask(&sigset, 0);
1832 if (!syserror(tcp)) {
1833 tcp->auxstr = signalent[tcp->u_rval];
1834 return RVAL_DECIMAL | RVAL_STR;
1844 sys_rt_sigprocmask(struct tcb *tcp)
1848 /* Note: arg[3] is the length of the sigset. */
1849 if (entering(tcp)) {
1850 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1854 else if (copy_sigset_len(tcp, tcp->u_arg[1], &sigset, tcp->u_arg[3]) < 0)
1855 tprintf("%#lx, ", tcp->u_arg[1]);
1857 printsigmask(&sigset, 1);
1865 else if (syserror(tcp))
1866 tprintf("%#lx", tcp->u_arg[2]);
1867 else if (copy_sigset_len(tcp, tcp->u_arg[2], &sigset, tcp->u_arg[3]) < 0)
1870 printsigmask(&sigset, 1);
1871 tprintf(", %lu", tcp->u_arg[3]);
1877 /* Structure describing the action to be taken when a signal arrives. */
1878 struct new_sigaction
1880 __sighandler_t __sa_handler;
1881 unsigned long sa_flags;
1882 void (*sa_restorer) (void);
1883 /* Kernel treats sa_mask as an array of longs. */
1884 unsigned long sa_mask[NSIG / sizeof(long) ? NSIG / sizeof(long) : 1];
1886 /* Same for i386-on-x86_64 and similar cases */
1887 struct new_sigaction32
1889 uint32_t __sa_handler;
1891 uint32_t sa_restorer;
1892 uint32_t sa_mask[2 * (NSIG / sizeof(long) ? NSIG / sizeof(long) : 1)];
1897 sys_rt_sigaction(struct tcb *tcp)
1899 struct new_sigaction sa;
1904 if (entering(tcp)) {
1905 printsignal(tcp->u_arg[0]);
1907 addr = tcp->u_arg[1];
1909 addr = tcp->u_arg[2];
1915 if (!verbose(tcp)) {
1916 tprintf("%#lx", addr);
1919 #if SUPPORTED_PERSONALITIES > 1
1920 if (personality_wordsize[current_personality] != sizeof(sa.sa_flags)
1921 && personality_wordsize[current_personality] == 4
1923 struct new_sigaction32 sa32;
1924 r = umove(tcp, addr, &sa32);
1926 memset(&sa, 0, sizeof(sa));
1927 sa.__sa_handler = (void*)(unsigned long)sa32.__sa_handler;
1928 sa.sa_flags = sa32.sa_flags;
1929 sa.sa_restorer = (void*)(unsigned long)sa32.sa_restorer;
1930 /* Kernel treats sa_mask as an array of longs.
1931 * For 32-bit process, "long" is uint32_t, thus, for example,
1932 * 32th bit in sa_mask will end up as bit 0 in sa_mask[1].
1933 * But for (64-bit) kernel, 32th bit in sa_mask is
1934 * 32th bit in 0th (64-bit) long!
1935 * For little-endian, it's the same.
1936 * For big-endian, we swap 32-bit words.
1938 sa.sa_mask[0] = sa32.sa_mask[0] + ((long)(sa32.sa_mask[1]) << 32);
1943 r = umove(tcp, addr, &sa);
1949 /* Architectures using function pointers, like
1950 * hppa, may need to manipulate the function pointer
1951 * to compute the result of a comparison. However,
1952 * the SA_HANDLER function pointer exists only in
1953 * the address space of the traced process, and can't
1954 * be manipulated by strace. In order to prevent the
1955 * compiler from generating code to manipulate
1956 * SA_HANDLER we cast the function pointers to long. */
1957 if ((long)sa.__sa_handler == (long)SIG_ERR)
1958 tprintf("{SIG_ERR, ");
1959 else if ((long)sa.__sa_handler == (long)SIG_DFL)
1960 tprintf("{SIG_DFL, ");
1961 else if ((long)sa.__sa_handler == (long)SIG_IGN)
1962 tprintf("{SIG_IGN, ");
1964 tprintf("{%#lx, ", (long) sa.__sa_handler);
1965 /* Questionable code below.
1966 * Kernel won't handle sys_rt_sigaction
1967 * with wrong sigset size (just returns EINVAL)
1968 * therefore tcp->u_arg[3(4)] _must_ be NSIG / 8 here,
1969 * and we always use smaller memcpy. */
1970 sigemptyset(&sigset);
1972 if (tcp->u_arg[4] <= sizeof(sigset))
1973 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[4]);
1975 if (tcp->u_arg[3] <= sizeof(sigset))
1976 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[3]);
1979 memcpy(&sigset, &sa.sa_mask, sizeof(sigset));
1980 printsigmask(&sigset, 1);
1982 printflags(sigact_flags, sa.sa_flags, "SA_???");
1984 if (sa.sa_flags & SA_RESTORER)
1985 tprintf(", %p", sa.sa_restorer);
1994 tprintf(", %#lx, %lu", tcp->u_arg[3], tcp->u_arg[4]);
1995 #elif defined(ALPHA)
1996 tprintf(", %lu, %#lx", tcp->u_arg[3], tcp->u_arg[4]);
1998 tprintf(", %lu", tcp->u_arg[3]);
2004 sys_rt_sigpending(struct tcb *tcp)
2010 tprintf("%#lx", tcp->u_arg[0]);
2011 else if (copy_sigset_len(tcp, tcp->u_arg[0],
2012 &sigset, tcp->u_arg[1]) < 0)
2015 printsigmask(&sigset, 1);
2021 sys_rt_sigsuspend(struct tcb *tcp)
2023 if (entering(tcp)) {
2025 if (copy_sigset_len(tcp, tcp->u_arg[0], &sigm, tcp->u_arg[1]) < 0)
2028 printsigmask(&sigm, 1);
2034 sys_rt_sigqueueinfo(struct tcb *tcp)
2036 if (entering(tcp)) {
2038 tprintf("%lu, ", tcp->u_arg[0]);
2039 printsignal(tcp->u_arg[1]);
2041 if (umove(tcp, tcp->u_arg[2], &si) < 0)
2042 tprintf("%#lx", tcp->u_arg[2]);
2044 printsiginfo(&si, verbose(tcp));
2049 int sys_rt_sigtimedwait(struct tcb *tcp)
2051 if (entering(tcp)) {
2054 if (copy_sigset_len(tcp, tcp->u_arg[0],
2055 &sigset, tcp->u_arg[3]) < 0)
2058 printsigmask(&sigset, 1);
2060 /* This is the only "return" parameter, */
2061 if (tcp->u_arg[1] != 0)
2063 /* ... if it's NULL, can decode all on entry */
2066 else if (tcp->u_arg[1] != 0) {
2067 /* syscall exit, and u_arg[1] wasn't NULL */
2069 tprintf("%#lx, ", tcp->u_arg[1]);
2072 if (umove(tcp, tcp->u_arg[1], &si) < 0)
2073 tprintf("%#lx, ", tcp->u_arg[1]);
2075 printsiginfo(&si, verbose(tcp));
2081 /* syscall exit, and u_arg[1] was NULL */
2084 print_timespec(tcp, tcp->u_arg[2]);
2085 tprintf(", %d", (int) tcp->u_arg[3]);
2090 sys_restart_syscall(struct tcb *tcp)
2093 tprintf("<... resuming interrupted call ...>");
2098 do_signalfd(struct tcb *tcp, int flags_arg)
2100 if (entering(tcp)) {
2101 printfd(tcp, tcp->u_arg[0]);
2103 print_sigset(tcp, tcp->u_arg[1], 1);
2104 tprintf(", %lu", tcp->u_arg[2]);
2105 if (flags_arg >= 0) {
2107 printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
2114 sys_signalfd(struct tcb *tcp)
2116 return do_signalfd(tcp, -1);
2120 sys_signalfd4(struct tcb *tcp)
2122 return do_signalfd(tcp, 3);