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.
46 # ifndef PTRACE_PEEKUSR
47 # define PTRACE_PEEKUSR PTRACE_PEEKUSER
49 # ifndef PTRACE_POKEUSR
50 # define PTRACE_POKEUSR PTRACE_POKEUSER
52 #elif defined(HAVE_LINUX_PTRACE_H)
53 # undef PTRACE_SYSCALL
54 # ifdef HAVE_STRUCT_IA64_FPREG
55 # define ia64_fpreg XXX_ia64_fpreg
57 # ifdef HAVE_STRUCT_PT_ALL_USER_REGS
58 # define pt_all_user_regs XXX_pt_all_user_regs
60 # include <linux/ptrace.h>
62 # undef pt_all_user_regs
68 # include <asm/ptrace_offsets.h>
72 # undef PTRACE_GETREGS
73 # define PTRACE_GETREGS PTRACE_GETREGS64
74 # undef PTRACE_SETREGS
75 # define PTRACE_SETREGS PTRACE_SETREGS64
78 #if defined(SPARC) || defined(SPARC64) || defined(MIPS)
80 struct pt_regs si_regs;
83 #elif defined HAVE_ASM_SIGCONTEXT_H
84 # if !defined(IA64) && !defined(X86_64)
85 # include <asm/sigcontext.h>
86 # endif /* !IA64 && !X86_64 */
87 #else /* !HAVE_ASM_SIGCONTEXT_H */
88 # if defined I386 && !defined HAVE_STRUCT_SIGCONTEXT_STRUCT
89 struct sigcontext_struct {
90 unsigned short gs, __gsh;
91 unsigned short fs, __fsh;
92 unsigned short es, __esh;
93 unsigned short ds, __dsh;
102 unsigned long trapno;
105 unsigned short cs, __csh;
106 unsigned long eflags;
107 unsigned long esp_at_signal;
108 unsigned short ss, __ssh;
110 unsigned long oldmask;
114 # if defined M68K && !defined HAVE_STRUCT_SIGCONTEXT
117 unsigned long sc_mask;
118 unsigned long sc_usp;
123 unsigned short sc_sr;
125 unsigned short sc_formatvec;
129 #endif /* !HAVE_ASM_SIGCONTEXT_H */
132 # warning: NSIG is not defined, using 32
136 /* Ugh. Is this really correct? ARM has no RT signals?! */
141 #ifdef HAVE_SIGACTION
143 #if defined(I386) || defined(X86_64)
144 /* The libc headers do not define this constant since it should only be
145 used by the implementation. So we define it here. */
147 # define SA_RESTORER 0x04000000
151 static const struct xlat sigact_flags[] = {
153 { SA_RESTORER, "SA_RESTORER" },
156 { SA_STACK, "SA_STACK" },
159 { SA_RESTART, "SA_RESTART" },
162 { SA_INTERRUPT, "SA_INTERRUPT" },
165 { SA_NODEFER, "SA_NODEFER" },
167 #if defined SA_NOMASK && SA_NODEFER != SA_NOMASK
168 { SA_NOMASK, "SA_NOMASK" },
171 { SA_RESETHAND, "SA_RESETHAND" },
173 #if defined SA_ONESHOT && SA_ONESHOT != SA_RESETHAND
174 { SA_ONESHOT, "SA_ONESHOT" },
177 { SA_SIGINFO, "SA_SIGINFO" },
180 { SA_RESETHAND, "SA_RESETHAND" },
183 { SA_ONSTACK, "SA_ONSTACK" },
186 { SA_NODEFER, "SA_NODEFER" },
189 { SA_NOCLDSTOP, "SA_NOCLDSTOP" },
192 { SA_NOCLDWAIT, "SA_NOCLDWAIT" },
195 { _SA_BSDCALL, "_SA_BSDCALL" },
198 { SA_NOPTRACE, "SA_NOPTRACE" },
203 static const struct xlat sigprocmaskcmds[] = {
204 { SIG_BLOCK, "SIG_BLOCK" },
205 { SIG_UNBLOCK, "SIG_UNBLOCK" },
206 { SIG_SETMASK, "SIG_SETMASK" },
208 { SIG_SETMASK32,"SIG_SETMASK32" },
213 #endif /* HAVE_SIGACTION */
215 /* Anonymous realtime signals. */
216 /* Under glibc 2.1, SIGRTMIN et al are functions, but __SIGRTMIN is a
217 constant. This is what we want. Otherwise, just use SIGRTMIN. */
220 #define __SIGRTMIN SIGRTMIN
221 #define __SIGRTMAX SIGRTMAX /* likewise */
225 /* Note on the size of sigset_t:
227 * In glibc, sigset_t is an array with space for 1024 bits (!),
228 * even though all arches supported by Linux have only 64 signals
229 * except MIPS, which has 128. IOW, it is 128 bytes long.
231 * In-kernel sigset_t is sized correctly (it is either 64 or 128 bit long).
232 * However, some old syscall return only 32 lower bits (one word).
233 * Example: sys_sigpending vs sys_rt_sigpending.
235 * Be aware of this fact when you try to
236 * memcpy(&tcp->u_arg[1], &something, sizeof(sigset_t))
237 * - sizeof(sigset_t) is much bigger than you think,
238 * it may overflow tcp->u_arg[] array, and it may try to copy more data
239 * than is really available in <something>.
241 * umoven(tcp, addr, sizeof(sigset_t), &sigset)
242 * may be a bad idea: it'll try to read much more data than needed
243 * to fetch a sigset_t.
244 * Use (NSIG / 8) as a size instead.
250 static char buf[sizeof("SIGRT_%d") + sizeof(int)*3];
252 if (sig >= 0 && sig < nsignals)
253 return signalent[sig];
255 if (sig >= __SIGRTMIN && sig <= __SIGRTMAX) {
256 sprintf(buf, "SIGRT_%d", (int)(sig - __SIGRTMIN));
260 sprintf(buf, "%d", sig);
265 long_to_sigset(long l, sigset_t *s)
272 copy_sigset_len(struct tcb *tcp, long addr, sigset_t *s, int len)
274 if (len > sizeof(*s))
277 if (umoven(tcp, addr, len, (char *)s) < 0)
282 /* Original sigset is unsigned long */
283 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(long))
286 sprintsigmask(const char *str, sigset_t *mask, int rt)
287 /* set might include realtime sigs */
289 /* Was [8 * sizeof(sigset_t) * 8], but
290 * glibc sigset_t is huge (1024 bits = 128 *bytes*),
291 * and we were ending up with 8k (!) buffer here.
293 * No Unix system can have sig > 255
294 * (waitpid API won't be able to indicate death from one)
295 * and sig 0 doesn't exist either.
296 * Therefore max possible no of sigs is 255: 1..255
298 static char outstr[8 * (255 * 2 / 3)];
309 maxsigs = __SIGRTMAX; /* instead */
311 s = stpcpy(outstr, str);
313 for (i = 1; i < maxsigs; i++) {
314 if (sigismember(mask, i) == 1)
318 /* 1: show mask members, 0: show those which are NOT in mask */
319 show_members = (nsigs < nsignals * 2 / 3);
324 for (i = 1; i < maxsigs; i++) {
325 if (sigismember(mask, i) == show_members) {
326 /* real-time signals on solaris don't have
332 s = stpcpy(s, signalent[i] + 3);
335 else if (i >= __SIGRTMIN && i <= __SIGRTMAX) {
336 sprintf(tsig, "RT_%u", i - __SIGRTMIN);
339 #endif /* SIGRTMIN */
341 sprintf(tsig, "%u", i);
355 printsigmask(sigset_t *mask, int rt)
357 tprints(sprintsigmask("", mask, rt));
363 tprints(signame(nr));
367 print_sigset(struct tcb *tcp, long addr, int rt)
373 else if (copy_sigset(tcp, addr, &ss) < 0)
374 tprintf("%#lx", addr);
376 printsigmask(&ss, rt);
381 #define ILL_ILLOPC 1 /* illegal opcode */
382 #define ILL_ILLOPN 2 /* illegal operand */
383 #define ILL_ILLADR 3 /* illegal addressing mode */
384 #define ILL_ILLTRP 4 /* illegal trap */
385 #define ILL_PRVOPC 5 /* privileged opcode */
386 #define ILL_PRVREG 6 /* privileged register */
387 #define ILL_COPROC 7 /* coprocessor error */
388 #define ILL_BADSTK 8 /* internal stack error */
389 #define FPE_INTDIV 1 /* integer divide by zero */
390 #define FPE_INTOVF 2 /* integer overflow */
391 #define FPE_FLTDIV 3 /* floating point divide by zero */
392 #define FPE_FLTOVF 4 /* floating point overflow */
393 #define FPE_FLTUND 5 /* floating point underflow */
394 #define FPE_FLTRES 6 /* floating point inexact result */
395 #define FPE_FLTINV 7 /* floating point invalid operation */
396 #define FPE_FLTSUB 8 /* subscript out of range */
397 #define SEGV_MAPERR 1 /* address not mapped to object */
398 #define SEGV_ACCERR 2 /* invalid permissions for mapped object */
399 #define BUS_ADRALN 1 /* invalid address alignment */
400 #define BUS_ADRERR 2 /* non-existant physical address */
401 #define BUS_OBJERR 3 /* object specific hardware error */
402 #define TRAP_BRKPT 1 /* process breakpoint */
403 #define TRAP_TRACE 2 /* process trace trap */
404 #define CLD_EXITED 1 /* child has exited */
405 #define CLD_KILLED 2 /* child was killed */
406 #define CLD_DUMPED 3 /* child terminated abnormally */
407 #define CLD_TRAPPED 4 /* traced child has trapped */
408 #define CLD_STOPPED 5 /* child has stopped */
409 #define CLD_CONTINUED 6 /* stopped child has continued */
410 #define POLL_IN 1 /* data input available */
411 #define POLL_OUT 2 /* output buffers available */
412 #define POLL_MSG 3 /* input message available */
413 #define POLL_ERR 4 /* i/o error */
414 #define POLL_PRI 5 /* high priority input available */
415 #define POLL_HUP 6 /* device disconnected */
416 #define SI_KERNEL 0x80 /* sent by kernel */
417 #define SI_USER 0 /* sent by kill, sigsend, raise */
418 #define SI_QUEUE -1 /* sent by sigqueue */
419 #define SI_TIMER -2 /* sent by timer expiration */
420 #define SI_MESGQ -3 /* sent by real time mesq state change */
421 #define SI_ASYNCIO -4 /* sent by AIO completion */
422 #define SI_SIGIO -5 /* sent by SIGIO */
423 #define SI_TKILL -6 /* sent by tkill */
424 #define SI_ASYNCNL -60 /* sent by asynch name lookup completion */
426 #define SI_FROMUSER(sip) ((sip)->si_code <= 0)
430 #if __GLIBC_MINOR__ < 1
431 /* Type for data associated with a signal. */
438 # define __SI_MAX_SIZE 128
439 # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof(int)) - 3)
441 typedef struct siginfo
443 int si_signo; /* Signal number. */
444 int si_errno; /* If non-zero, an errno value associated with
445 this signal, as defined in <errno.h>. */
446 int si_code; /* Signal code. */
450 int _pad[__SI_PAD_SIZE];
455 __pid_t si_pid; /* Sending process ID. */
456 __uid_t si_uid; /* Real user ID of sending process. */
459 /* POSIX.1b timers. */
462 unsigned int _timer1;
463 unsigned int _timer2;
466 /* POSIX.1b signals. */
469 __pid_t si_pid; /* Sending process ID. */
470 __uid_t si_uid; /* Real user ID of sending process. */
471 sigval_t si_sigval; /* Signal value. */
477 __pid_t si_pid; /* Which child. */
478 int si_status; /* Exit value or signal. */
483 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
486 void *si_addr; /* Faulting insn/memory ref. */
492 int si_band; /* Band event for SIGPOLL. */
498 #define si_pid _sifields._kill.si_pid
499 #define si_uid _sifields._kill.si_uid
500 #define si_status _sifields._sigchld.si_status
501 #define si_utime _sifields._sigchld.si_utime
502 #define si_stime _sifields._sigchld.si_stime
503 #define si_value _sifields._rt.si_sigval
504 #define si_int _sifields._rt.si_sigval.sival_int
505 #define si_ptr _sifields._rt.si_sigval.sival_ptr
506 #define si_addr _sifields._sigfault.si_addr
507 #define si_band _sifields._sigpoll.si_band
508 #define si_fd _sifields._sigpoll.si_fd
514 static const struct xlat siginfo_codes[] = {
516 { SI_KERNEL, "SI_KERNEL" },
519 { SI_USER, "SI_USER" },
522 { SI_QUEUE, "SI_QUEUE" },
525 { SI_TIMER, "SI_TIMER" },
528 { SI_MESGQ, "SI_MESGQ" },
531 { SI_ASYNCIO, "SI_ASYNCIO" },
534 { SI_SIGIO, "SI_SIGIO" },
537 { SI_TKILL, "SI_TKILL" },
540 { SI_ASYNCNL, "SI_ASYNCNL" },
543 { SI_NOINFO, "SI_NOINFO" },
546 { SI_LWP, "SI_LWP" },
551 static const struct xlat sigill_codes[] = {
552 { ILL_ILLOPC, "ILL_ILLOPC" },
553 { ILL_ILLOPN, "ILL_ILLOPN" },
554 { ILL_ILLADR, "ILL_ILLADR" },
555 { ILL_ILLTRP, "ILL_ILLTRP" },
556 { ILL_PRVOPC, "ILL_PRVOPC" },
557 { ILL_PRVREG, "ILL_PRVREG" },
558 { ILL_COPROC, "ILL_COPROC" },
559 { ILL_BADSTK, "ILL_BADSTK" },
563 static const struct xlat sigfpe_codes[] = {
564 { FPE_INTDIV, "FPE_INTDIV" },
565 { FPE_INTOVF, "FPE_INTOVF" },
566 { FPE_FLTDIV, "FPE_FLTDIV" },
567 { FPE_FLTOVF, "FPE_FLTOVF" },
568 { FPE_FLTUND, "FPE_FLTUND" },
569 { FPE_FLTRES, "FPE_FLTRES" },
570 { FPE_FLTINV, "FPE_FLTINV" },
571 { FPE_FLTSUB, "FPE_FLTSUB" },
575 static const struct xlat sigtrap_codes[] = {
576 { TRAP_BRKPT, "TRAP_BRKPT" },
577 { TRAP_TRACE, "TRAP_TRACE" },
581 static const struct xlat sigchld_codes[] = {
582 { CLD_EXITED, "CLD_EXITED" },
583 { CLD_KILLED, "CLD_KILLED" },
584 { CLD_DUMPED, "CLD_DUMPED" },
585 { CLD_TRAPPED, "CLD_TRAPPED" },
586 { CLD_STOPPED, "CLD_STOPPED" },
587 { CLD_CONTINUED,"CLD_CONTINUED" },
591 static const struct xlat sigpoll_codes[] = {
592 { POLL_IN, "POLL_IN" },
593 { POLL_OUT, "POLL_OUT" },
594 { POLL_MSG, "POLL_MSG" },
595 { POLL_ERR, "POLL_ERR" },
596 { POLL_PRI, "POLL_PRI" },
597 { POLL_HUP, "POLL_HUP" },
601 static const struct xlat sigprof_codes[] = {
603 { PROF_SIG, "PROF_SIG" },
609 static const struct xlat sigemt_codes[] = {
611 { EMT_TAGOVF, "EMT_TAGOVF" },
617 static const struct xlat sigsegv_codes[] = {
618 { SEGV_MAPERR, "SEGV_MAPERR" },
619 { SEGV_ACCERR, "SEGV_ACCERR" },
623 static const struct xlat sigbus_codes[] = {
624 { BUS_ADRALN, "BUS_ADRALN" },
625 { BUS_ADRERR, "BUS_ADRERR" },
626 { BUS_OBJERR, "BUS_OBJERR" },
631 printsiginfo(siginfo_t *sip, int verbose)
635 if (sip->si_signo == 0) {
639 tprints("{si_signo=");
640 printsignal(sip->si_signo);
641 code = xlookup(siginfo_codes, sip->si_code);
643 switch (sip->si_signo) {
645 code = xlookup(sigtrap_codes, sip->si_code);
648 code = xlookup(sigchld_codes, sip->si_code);
651 code = xlookup(sigpoll_codes, sip->si_code);
654 code = xlookup(sigprof_codes, sip->si_code);
657 code = xlookup(sigill_codes, sip->si_code);
661 code = xlookup(sigemt_codes, sip->si_code);
665 code = xlookup(sigfpe_codes, sip->si_code);
668 code = xlookup(sigsegv_codes, sip->si_code);
671 code = xlookup(sigbus_codes, sip->si_code);
676 tprintf(", si_code=%s", code);
678 tprintf(", si_code=%#x", sip->si_code);
680 if (sip->si_code != SI_NOINFO)
684 if (sip->si_errno < 0 || sip->si_errno >= nerrnos)
685 tprintf(", si_errno=%d", sip->si_errno);
687 tprintf(", si_errno=%s",
688 errnoent[sip->si_errno]);
691 if (SI_FROMUSER(sip)) {
692 tprintf(", si_pid=%lu, si_uid=%lu",
693 (unsigned long) sip->si_pid,
694 (unsigned long) sip->si_uid);
695 switch (sip->si_code) {
706 tprintf(", si_value=%d", sip->si_int);
715 tprintf(", si_value={int=%u, ptr=%#lx}",
717 (unsigned long) sip->si_ptr);
722 #endif /* SI_FROMUSER */
724 switch (sip->si_signo) {
726 tprintf(", si_pid=%ld, si_status=",
728 if (sip->si_code == CLD_EXITED)
729 tprintf("%d", sip->si_status);
731 printsignal(sip->si_status);
735 tprintf(", si_utime=%lu, si_stime=%lu",
739 case SIGILL: case SIGFPE:
740 case SIGSEGV: case SIGBUS:
741 tprintf(", si_addr=%#lx",
742 (unsigned long) sip->si_addr);
745 switch (sip->si_code) {
746 case POLL_IN: case POLL_OUT: case POLL_MSG:
747 tprintf(", si_band=%ld",
748 (long) sip->si_band);
753 if (sip->si_pid || sip->si_uid)
754 tprintf(", si_pid=%lu, si_uid=%lu",
755 (unsigned long) sip->si_pid,
756 (unsigned long) sip->si_uid);
762 tprintf(", si_value={int=%u, ptr=%#lx}",
764 (unsigned long) sip->si_ptr);
777 sys_sigsetmask(struct tcb *tcp)
781 long_to_sigset(tcp->u_arg[0], &sigm);
782 printsigmask(&sigm, 0);
784 else if (!syserror(tcp)) {
786 long_to_sigset(tcp->u_rval, &sigm);
787 tcp->auxstr = sprintsigmask("old mask ", &sigm, 0);
789 return RVAL_HEX | RVAL_STR;
796 #ifdef HAVE_SIGACTION
798 struct old_sigaction {
799 __sighandler_t __sa_handler;
800 unsigned long sa_mask;
801 unsigned long sa_flags;
802 void (*sa_restorer)(void);
804 #define SA_HANDLER __sa_handler
807 #define SA_HANDLER sa_handler
811 sys_sigaction(struct tcb *tcp)
815 struct old_sigaction sa;
819 printsignal(tcp->u_arg[0]);
821 addr = tcp->u_arg[1];
823 addr = tcp->u_arg[2];
826 else if (!verbose(tcp))
827 tprintf("%#lx", addr);
828 else if (umove(tcp, addr, &sa) < 0)
831 /* Architectures using function pointers, like
832 * hppa, may need to manipulate the function pointer
833 * to compute the result of a comparison. However,
834 * the SA_HANDLER function pointer exists only in
835 * the address space of the traced process, and can't
836 * be manipulated by strace. In order to prevent the
837 * compiler from generating code to manipulate
838 * SA_HANDLER we cast the function pointers to long. */
839 if ((long)sa.SA_HANDLER == (long)SIG_ERR)
840 tprints("{SIG_ERR, ");
841 else if ((long)sa.SA_HANDLER == (long)SIG_DFL)
842 tprints("{SIG_DFL, ");
843 else if ((long)sa.SA_HANDLER == (long)SIG_IGN)
844 tprints("{SIG_IGN, ");
846 tprintf("{%#lx, ", (long) sa.SA_HANDLER);
847 long_to_sigset(sa.sa_mask, &sigset);
848 printsigmask(&sigset, 0);
850 printflags(sigact_flags, sa.sa_flags, "SA_???");
852 if (sa.sa_flags & SA_RESTORER)
853 tprintf(", %p", sa.sa_restorer);
860 tprintf(", %#lx", (unsigned long) sa.sa_restorer);
865 sys_signal(struct tcb *tcp)
868 printsignal(tcp->u_arg[0]);
870 switch (tcp->u_arg[1]) {
881 tprintf("%#lx", tcp->u_arg[1]);
885 else if (!syserror(tcp)) {
886 switch (tcp->u_rval) {
888 tcp->auxstr = "SIG_ERR"; break;
890 tcp->auxstr = "SIG_DFL"; break;
892 tcp->auxstr = "SIG_IGN"; break;
896 return RVAL_HEX | RVAL_STR;
902 #endif /* HAVE_SIGACTION */
906 sys_sigreturn(struct tcb *tcp)
911 struct sigcontext_struct sc;
913 if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (void *)®s) == -1)
915 if (umove(tcp, regs.ARM_sp, &sc) < 0)
917 long_to_sigset(sc.oldmask, &sigm);
918 tprints(sprintsigmask(") (mask ", &sigm, 0));
921 #elif defined(S390) || defined(S390X)
924 struct sigcontext_struct sc;
925 if (upeek(tcp, PT_GPR15, &usp) < 0)
927 if (umove(tcp, usp + __SIGNAL_FRAMESIZE, &sc) < 0)
929 tprints(sprintsigmask(") (mask ", (sigset_t *)&sc.oldmask[0], 0));
934 struct sigcontext_struct sc;
935 /* Note: on i386, sc is followed on stack by struct fpstate
936 * and after it an additional u32 extramask[1] which holds
937 * upper half of the mask. We can fetch it there
938 * if/when we'd want to display the full mask...
941 if (umove(tcp, i386_regs.esp, &sc) < 0)
943 long_to_sigset(sc.oldmask, &sigm);
944 tprints(sprintsigmask(") (mask ", &sigm, 0));
949 struct sigcontext sc;
952 /* offset of sigcontext in the kernel's sigframe structure: */
953 # define SIGFRAME_SC_OFFSET 0x90
954 if (upeek(tcp, PT_R12, &sp) < 0)
956 if (umove(tcp, sp + 16 + SIGFRAME_SC_OFFSET, &sc) < 0)
959 memcpy(&sigm, &sc.sc_mask, NSIG / 8);
960 tprints(sprintsigmask(") (mask ", &sigm, 0));
963 #elif defined(POWERPC)
966 struct sigcontext_struct sc;
968 if (upeek(tcp, sizeof(unsigned long) * PT_R1, &esp) < 0)
970 /* Skip dummy stack frame. */
972 if (current_personality == 0)
979 if (umove(tcp, esp, &sc) < 0)
981 long_to_sigset(sc.oldmask, &sigm);
982 tprints(sprintsigmask(") (mask ", &sigm, 0));
988 struct sigcontext sc;
990 if (upeek(tcp, 4*PT_USP, &usp) < 0)
992 if (umove(tcp, usp, &sc) < 0)
994 long_to_sigset(sc.sc_mask, &sigm);
995 tprints(sprintsigmask(") (mask ", &sigm, 0));
1001 struct sigcontext_struct sc;
1003 if (upeek(tcp, REG_FP, &fp) < 0)
1005 if (umove(tcp, fp, &sc) < 0)
1007 long_to_sigset(sc.sc_mask, &sigm);
1008 tprints(sprintsigmask(") (mask ", &sigm, 0));
1011 #elif defined(SPARC) || defined(SPARC64)
1012 if (entering(tcp)) {
1014 struct pt_regs regs;
1017 if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
1018 perror("sigreturn: PTRACE_GETREGS");
1021 i1 = regs.u_regs[U_REG_O1];
1022 if (umove(tcp, i1, &si) < 0) {
1023 perror("sigreturn: umove");
1026 long_to_sigset(si.si_mask, &sigm);
1027 tprints(sprintsigmask(") (mask ", &sigm, 0));
1030 #elif defined(LINUX_MIPSN32) || defined(LINUX_MIPSN64)
1031 /* This decodes rt_sigreturn. The 64-bit ABIs do not have
1033 if (entering(tcp)) {
1037 if (upeek(tcp, REG_SP, &sp) < 0)
1039 /* There are six words followed by a 128-byte siginfo. */
1040 sp = sp + 6 * 4 + 128;
1041 if (umove(tcp, sp, &uc) < 0)
1043 long_to_sigset(*(long *) &uc.uc_sigmask, &sigm);
1044 tprints(sprintsigmask(") (mask ", &sigm, 0));
1048 if (entering(tcp)) {
1050 struct pt_regs regs;
1053 if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
1054 perror("sigreturn: PTRACE_GETREGS");
1058 if (umove(tcp, sp, &si) < 0)
1060 long_to_sigset(si.si_mask, &sigm);
1061 tprints(sprintsigmask(") (mask ", &sigm, 0));
1064 #elif defined(CRISV10) || defined(CRISV32)
1065 if (entering(tcp)) {
1066 struct sigcontext sc;
1067 long regs[PT_MAX+1];
1069 if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long)regs) < 0) {
1070 perror("sigreturn: PTRACE_GETREGS");
1073 if (umove(tcp, regs[PT_USP], &sc) < 0)
1075 long_to_sigset(sc.oldmask, &sigm);
1076 tprints(sprintsigmask(") (mask ", &sigm, 0));
1080 if (entering(tcp)) {
1085 /* offset of ucontext in the kernel's sigframe structure */
1086 # define SIGFRAME_UC_OFFSET C_ABI_SAVE_AREA_SIZE + sizeof(struct siginfo)
1087 if (upeek(tcp, PTREGS_OFFSET_SP, &sp) < 0)
1089 if (umove(tcp, sp + SIGFRAME_UC_OFFSET, &uc) < 0)
1092 memcpy(&sigm, &uc.uc_sigmask, NSIG / 8);
1093 tprints(sprintsigmask(") (mask ", &sigm, 0));
1096 #elif defined(MICROBLAZE)
1097 /* TODO: Verify that this is correct... */
1098 if (entering(tcp)) {
1099 struct sigcontext sc;
1102 /* Read r1, the stack pointer. */
1103 if (upeek(tcp, 1 * 4, &sp) < 0)
1105 if (umove(tcp, sp, &sc) < 0)
1107 long_to_sigset(sc.oldmask, &sigm);
1108 tprints(sprintsigmask(") (mask ", &sigm, 0));
1112 #warning No sys_sigreturn() for this architecture
1113 #warning (no problem, just a reminder :-)
1119 sys_siggetmask(struct tcb *tcp)
1123 long_to_sigset(tcp->u_rval, &sigm);
1124 tcp->auxstr = sprintsigmask("mask ", &sigm, 0);
1126 return RVAL_HEX | RVAL_STR;
1130 sys_sigsuspend(struct tcb *tcp)
1132 if (entering(tcp)) {
1134 long_to_sigset(tcp->u_arg[2], &sigm);
1135 printsigmask(&sigm, 0);
1140 #if !defined SS_ONSTACK
1141 #define SS_ONSTACK 1
1142 #define SS_DISABLE 2
1143 #if __GLIBC_MINOR__ == 0
1153 static const struct xlat sigaltstack_flags[] = {
1154 { SS_ONSTACK, "SS_ONSTACK" },
1155 { SS_DISABLE, "SS_DISABLE" },
1162 print_stack_t(struct tcb *tcp, unsigned long addr)
1165 if (umove(tcp, addr, &ss) < 0)
1167 tprintf("{ss_sp=%#lx, ss_flags=", (unsigned long) ss.ss_sp);
1168 printflags(sigaltstack_flags, ss.ss_flags, "SS_???");
1169 tprintf(", ss_size=%lu}", (unsigned long) ss.ss_size);
1174 sys_sigaltstack(struct tcb *tcp)
1176 if (entering(tcp)) {
1177 if (tcp->u_arg[0] == 0)
1179 else if (print_stack_t(tcp, tcp->u_arg[0]) < 0)
1184 if (tcp->u_arg[1] == 0)
1186 else if (print_stack_t(tcp, tcp->u_arg[1]) < 0)
1192 #ifdef HAVE_SIGACTION
1195 sys_sigprocmask(struct tcb *tcp)
1198 if (entering(tcp)) {
1199 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1201 printsigmask(tcp->u_arg[1], 0);
1203 else if (!syserror(tcp)) {
1204 tcp->auxstr = sprintsigmask("old mask ", tcp->u_rval, 0);
1205 return RVAL_HEX | RVAL_STR;
1208 if (entering(tcp)) {
1209 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1211 print_sigset(tcp, tcp->u_arg[1], 0);
1217 else if (syserror(tcp))
1218 tprintf("%#lx", tcp->u_arg[2]);
1220 print_sigset(tcp, tcp->u_arg[2], 0);
1226 #endif /* HAVE_SIGACTION */
1229 sys_kill(struct tcb *tcp)
1231 if (entering(tcp)) {
1232 long pid = tcp->u_arg[0];
1233 #if SUPPORTED_PERSONALITIES > 1
1234 /* Sign-extend a 32-bit value when that's what it is. */
1235 if (personality_wordsize[current_personality] < sizeof pid)
1236 pid = (long) (int) pid;
1238 tprintf("%ld, %s", pid, signame(tcp->u_arg[1]));
1245 sys_tgkill(struct tcb *tcp)
1247 if (entering(tcp)) {
1248 tprintf("%ld, %ld, %s",
1249 tcp->u_arg[0], tcp->u_arg[1], signame(tcp->u_arg[2]));
1255 sys_sigpending(struct tcb *tcp)
1261 tprintf("%#lx", tcp->u_arg[0]);
1262 else if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1265 printsigmask(&sigset, 0);
1273 sys_rt_sigprocmask(struct tcb *tcp)
1277 /* Note: arg[3] is the length of the sigset. */
1278 if (entering(tcp)) {
1279 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1283 else if (copy_sigset_len(tcp, tcp->u_arg[1], &sigset, tcp->u_arg[3]) < 0)
1284 tprintf("%#lx, ", tcp->u_arg[1]);
1286 printsigmask(&sigset, 1);
1293 else if (syserror(tcp))
1294 tprintf("%#lx", tcp->u_arg[2]);
1295 else if (copy_sigset_len(tcp, tcp->u_arg[2], &sigset, tcp->u_arg[3]) < 0)
1298 printsigmask(&sigset, 1);
1299 tprintf(", %lu", tcp->u_arg[3]);
1305 /* Structure describing the action to be taken when a signal arrives. */
1306 struct new_sigaction
1308 __sighandler_t __sa_handler;
1309 unsigned long sa_flags;
1310 void (*sa_restorer) (void);
1311 /* Kernel treats sa_mask as an array of longs. */
1312 unsigned long sa_mask[NSIG / sizeof(long) ? NSIG / sizeof(long) : 1];
1314 /* Same for i386-on-x86_64 and similar cases */
1315 struct new_sigaction32
1317 uint32_t __sa_handler;
1319 uint32_t sa_restorer;
1320 uint32_t sa_mask[2 * (NSIG / sizeof(long) ? NSIG / sizeof(long) : 1)];
1325 sys_rt_sigaction(struct tcb *tcp)
1327 struct new_sigaction sa;
1332 if (entering(tcp)) {
1333 printsignal(tcp->u_arg[0]);
1335 addr = tcp->u_arg[1];
1337 addr = tcp->u_arg[2];
1343 if (!verbose(tcp)) {
1344 tprintf("%#lx", addr);
1347 #if SUPPORTED_PERSONALITIES > 1
1348 if (personality_wordsize[current_personality] != sizeof(sa.sa_flags)
1349 && personality_wordsize[current_personality] == 4
1351 struct new_sigaction32 sa32;
1352 r = umove(tcp, addr, &sa32);
1354 memset(&sa, 0, sizeof(sa));
1355 sa.__sa_handler = (void*)(unsigned long)sa32.__sa_handler;
1356 sa.sa_flags = sa32.sa_flags;
1357 sa.sa_restorer = (void*)(unsigned long)sa32.sa_restorer;
1358 /* Kernel treats sa_mask as an array of longs.
1359 * For 32-bit process, "long" is uint32_t, thus, for example,
1360 * 32th bit in sa_mask will end up as bit 0 in sa_mask[1].
1361 * But for (64-bit) kernel, 32th bit in sa_mask is
1362 * 32th bit in 0th (64-bit) long!
1363 * For little-endian, it's the same.
1364 * For big-endian, we swap 32-bit words.
1366 sa.sa_mask[0] = sa32.sa_mask[0] + ((long)(sa32.sa_mask[1]) << 32);
1371 r = umove(tcp, addr, &sa);
1377 /* Architectures using function pointers, like
1378 * hppa, may need to manipulate the function pointer
1379 * to compute the result of a comparison. However,
1380 * the SA_HANDLER function pointer exists only in
1381 * the address space of the traced process, and can't
1382 * be manipulated by strace. In order to prevent the
1383 * compiler from generating code to manipulate
1384 * SA_HANDLER we cast the function pointers to long. */
1385 if ((long)sa.__sa_handler == (long)SIG_ERR)
1386 tprints("{SIG_ERR, ");
1387 else if ((long)sa.__sa_handler == (long)SIG_DFL)
1388 tprints("{SIG_DFL, ");
1389 else if ((long)sa.__sa_handler == (long)SIG_IGN)
1390 tprints("{SIG_IGN, ");
1392 tprintf("{%#lx, ", (long) sa.__sa_handler);
1393 /* Questionable code below.
1394 * Kernel won't handle sys_rt_sigaction
1395 * with wrong sigset size (just returns EINVAL)
1396 * therefore tcp->u_arg[3(4)] _must_ be NSIG / 8 here,
1397 * and we always use smaller memcpy. */
1398 sigemptyset(&sigset);
1400 if (tcp->u_arg[4] <= sizeof(sigset))
1401 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[4]);
1403 if (tcp->u_arg[3] <= sizeof(sigset))
1404 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[3]);
1407 memcpy(&sigset, &sa.sa_mask, sizeof(sigset));
1408 printsigmask(&sigset, 1);
1410 printflags(sigact_flags, sa.sa_flags, "SA_???");
1412 if (sa.sa_flags & SA_RESTORER)
1413 tprintf(", %p", sa.sa_restorer);
1422 tprintf(", %#lx, %lu", tcp->u_arg[3], tcp->u_arg[4]);
1423 #elif defined(ALPHA)
1424 tprintf(", %lu, %#lx", tcp->u_arg[3], tcp->u_arg[4]);
1426 tprintf(", %lu", tcp->u_arg[3]);
1432 sys_rt_sigpending(struct tcb *tcp)
1438 tprintf("%#lx", tcp->u_arg[0]);
1439 else if (copy_sigset_len(tcp, tcp->u_arg[0],
1440 &sigset, tcp->u_arg[1]) < 0)
1443 printsigmask(&sigset, 1);
1449 sys_rt_sigsuspend(struct tcb *tcp)
1451 if (entering(tcp)) {
1453 if (copy_sigset_len(tcp, tcp->u_arg[0], &sigm, tcp->u_arg[1]) < 0)
1456 printsigmask(&sigm, 1);
1462 sys_rt_sigqueueinfo(struct tcb *tcp)
1464 if (entering(tcp)) {
1466 tprintf("%lu, ", tcp->u_arg[0]);
1467 printsignal(tcp->u_arg[1]);
1469 if (umove(tcp, tcp->u_arg[2], &si) < 0)
1470 tprintf("%#lx", tcp->u_arg[2]);
1472 printsiginfo(&si, verbose(tcp));
1477 int sys_rt_sigtimedwait(struct tcb *tcp)
1479 if (entering(tcp)) {
1482 if (copy_sigset_len(tcp, tcp->u_arg[0],
1483 &sigset, tcp->u_arg[3]) < 0)
1486 printsigmask(&sigset, 1);
1488 /* This is the only "return" parameter, */
1489 if (tcp->u_arg[1] != 0)
1491 /* ... if it's NULL, can decode all on entry */
1494 else if (tcp->u_arg[1] != 0) {
1495 /* syscall exit, and u_arg[1] wasn't NULL */
1497 tprintf("%#lx, ", tcp->u_arg[1]);
1500 if (umove(tcp, tcp->u_arg[1], &si) < 0)
1501 tprintf("%#lx, ", tcp->u_arg[1]);
1503 printsiginfo(&si, verbose(tcp));
1509 /* syscall exit, and u_arg[1] was NULL */
1512 print_timespec(tcp, tcp->u_arg[2]);
1513 tprintf(", %d", (int) tcp->u_arg[3]);
1518 sys_restart_syscall(struct tcb *tcp)
1521 tprints("<... resuming interrupted call ...>");
1526 do_signalfd(struct tcb *tcp, int flags_arg)
1528 if (entering(tcp)) {
1529 printfd(tcp, tcp->u_arg[0]);
1531 print_sigset(tcp, tcp->u_arg[1], 1);
1532 tprintf(", %lu", tcp->u_arg[2]);
1533 if (flags_arg >= 0) {
1535 printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
1542 sys_signalfd(struct tcb *tcp)
1544 return do_signalfd(tcp, -1);
1548 sys_signalfd4(struct tcb *tcp)
1550 return do_signalfd(tcp, 3);