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 # ifndef PTRACE_PEEKUSR
45 # define PTRACE_PEEKUSR PTRACE_PEEKUSER
47 # ifndef PTRACE_POKEUSR
48 # define PTRACE_POKEUSR PTRACE_POKEUSER
50 #elif defined(HAVE_LINUX_PTRACE_H)
51 # undef PTRACE_SYSCALL
52 # ifdef HAVE_STRUCT_IA64_FPREG
53 # define ia64_fpreg XXX_ia64_fpreg
55 # ifdef HAVE_STRUCT_PT_ALL_USER_REGS
56 # define pt_all_user_regs XXX_pt_all_user_regs
58 # include <linux/ptrace.h>
60 # undef pt_all_user_regs
64 # include <asm/ptrace_offsets.h>
68 # undef PTRACE_GETREGS
69 # define PTRACE_GETREGS PTRACE_GETREGS64
70 # undef PTRACE_SETREGS
71 # define PTRACE_SETREGS PTRACE_SETREGS64
74 #if defined(SPARC) || defined(SPARC64) || defined(MIPS)
76 struct pt_regs si_regs;
79 #elif defined HAVE_ASM_SIGCONTEXT_H
80 # if !defined(IA64) && !defined(X86_64)
81 # include <asm/sigcontext.h>
82 # endif /* !IA64 && !X86_64 */
83 #else /* !HAVE_ASM_SIGCONTEXT_H */
84 # if defined I386 && !defined HAVE_STRUCT_SIGCONTEXT_STRUCT
85 struct sigcontext_struct {
86 unsigned short gs, __gsh;
87 unsigned short fs, __fsh;
88 unsigned short es, __esh;
89 unsigned short ds, __dsh;
101 unsigned short cs, __csh;
102 unsigned long eflags;
103 unsigned long esp_at_signal;
104 unsigned short ss, __ssh;
106 unsigned long oldmask;
110 # if defined M68K && !defined HAVE_STRUCT_SIGCONTEXT
113 unsigned long sc_mask;
114 unsigned long sc_usp;
119 unsigned short sc_sr;
121 unsigned short sc_formatvec;
125 #endif /* !HAVE_ASM_SIGCONTEXT_H */
128 # warning: NSIG is not defined, using 32
132 /* Ugh. Is this really correct? ARM has no RT signals?! */
137 #ifdef HAVE_SIGACTION
139 #if defined(I386) || defined(X86_64)
140 /* The libc headers do not define this constant since it should only be
141 used by the implementation. So we define it here. */
143 # define SA_RESTORER 0x04000000
147 static const struct xlat sigact_flags[] = {
149 { SA_RESTORER, "SA_RESTORER" },
152 { SA_STACK, "SA_STACK" },
155 { SA_RESTART, "SA_RESTART" },
158 { SA_INTERRUPT, "SA_INTERRUPT" },
161 { SA_NODEFER, "SA_NODEFER" },
163 #if defined SA_NOMASK && SA_NODEFER != SA_NOMASK
164 { SA_NOMASK, "SA_NOMASK" },
167 { SA_RESETHAND, "SA_RESETHAND" },
169 #if defined SA_ONESHOT && SA_ONESHOT != SA_RESETHAND
170 { SA_ONESHOT, "SA_ONESHOT" },
173 { SA_SIGINFO, "SA_SIGINFO" },
176 { SA_RESETHAND, "SA_RESETHAND" },
179 { SA_ONSTACK, "SA_ONSTACK" },
182 { SA_NODEFER, "SA_NODEFER" },
185 { SA_NOCLDSTOP, "SA_NOCLDSTOP" },
188 { SA_NOCLDWAIT, "SA_NOCLDWAIT" },
191 { _SA_BSDCALL, "_SA_BSDCALL" },
194 { SA_NOPTRACE, "SA_NOPTRACE" },
199 static const struct xlat sigprocmaskcmds[] = {
200 { SIG_BLOCK, "SIG_BLOCK" },
201 { SIG_UNBLOCK, "SIG_UNBLOCK" },
202 { SIG_SETMASK, "SIG_SETMASK" },
204 { SIG_SETMASK32,"SIG_SETMASK32" },
209 #endif /* HAVE_SIGACTION */
211 /* Anonymous realtime signals. */
212 /* Under glibc 2.1, SIGRTMIN et al are functions, but __SIGRTMIN is a
213 constant. This is what we want. Otherwise, just use SIGRTMIN. */
216 #define __SIGRTMIN SIGRTMIN
217 #define __SIGRTMAX SIGRTMAX /* likewise */
221 /* Note on the size of sigset_t:
223 * In glibc, sigset_t is an array with space for 1024 bits (!),
224 * even though all arches supported by Linux have only 64 signals
225 * except MIPS, which has 128. IOW, it is 128 bytes long.
227 * In-kernel sigset_t is sized correctly (it is either 64 or 128 bit long).
228 * However, some old syscall return only 32 lower bits (one word).
229 * Example: sys_sigpending vs sys_rt_sigpending.
231 * Be aware of this fact when you try to
232 * memcpy(&tcp->u_arg[1], &something, sizeof(sigset_t))
233 * - sizeof(sigset_t) is much bigger than you think,
234 * it may overflow tcp->u_arg[] array, and it may try to copy more data
235 * than is really available in <something>.
237 * umoven(tcp, addr, sizeof(sigset_t), &sigset)
238 * may be a bad idea: it'll try to read much more data than needed
239 * to fetch a sigset_t.
240 * Use (NSIG / 8) as a size instead.
246 static char buf[sizeof("SIGRT_%d") + sizeof(int)*3];
248 if (sig >= 0 && sig < nsignals)
249 return signalent[sig];
251 if (sig >= __SIGRTMIN && sig <= __SIGRTMAX) {
252 sprintf(buf, "SIGRT_%d", (int)(sig - __SIGRTMIN));
256 sprintf(buf, "%d", sig);
261 long_to_sigset(long l, sigset_t *s)
268 copy_sigset_len(struct tcb *tcp, long addr, sigset_t *s, int len)
270 if (len > sizeof(*s))
273 if (umoven(tcp, addr, len, (char *)s) < 0)
278 /* Original sigset is unsigned long */
279 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(long))
282 sprintsigmask(const char *str, sigset_t *mask, int rt)
283 /* set might include realtime sigs */
285 /* Was [8 * sizeof(sigset_t) * 8], but
286 * glibc sigset_t is huge (1024 bits = 128 *bytes*),
287 * and we were ending up with 8k (!) buffer here.
289 * No Unix system can have sig > 255
290 * (waitpid API won't be able to indicate death from one)
291 * and sig 0 doesn't exist either.
292 * Therefore max possible no of sigs is 255: 1..255
294 static char outstr[8 * (255 * 2 / 3)];
305 maxsigs = __SIGRTMAX; /* instead */
307 s = stpcpy(outstr, str);
309 for (i = 1; i < maxsigs; i++) {
310 if (sigismember(mask, i) == 1)
314 /* 1: show mask members, 0: show those which are NOT in mask */
315 show_members = (nsigs < nsignals * 2 / 3);
320 for (i = 1; i < maxsigs; i++) {
321 if (sigismember(mask, i) == show_members) {
322 /* real-time signals on solaris don't have
328 s = stpcpy(s, signalent[i] + 3);
331 else if (i >= __SIGRTMIN && i <= __SIGRTMAX) {
332 sprintf(tsig, "RT_%u", i - __SIGRTMIN);
335 #endif /* SIGRTMIN */
337 sprintf(tsig, "%u", i);
351 printsigmask(sigset_t *mask, int rt)
353 tprints(sprintsigmask("", mask, rt));
359 tprints(signame(nr));
363 print_sigset(struct tcb *tcp, long addr, int rt)
369 else if (copy_sigset(tcp, addr, &ss) < 0)
370 tprintf("%#lx", addr);
372 printsigmask(&ss, rt);
376 #define ILL_ILLOPC 1 /* illegal opcode */
377 #define ILL_ILLOPN 2 /* illegal operand */
378 #define ILL_ILLADR 3 /* illegal addressing mode */
379 #define ILL_ILLTRP 4 /* illegal trap */
380 #define ILL_PRVOPC 5 /* privileged opcode */
381 #define ILL_PRVREG 6 /* privileged register */
382 #define ILL_COPROC 7 /* coprocessor error */
383 #define ILL_BADSTK 8 /* internal stack error */
384 #define FPE_INTDIV 1 /* integer divide by zero */
385 #define FPE_INTOVF 2 /* integer overflow */
386 #define FPE_FLTDIV 3 /* floating point divide by zero */
387 #define FPE_FLTOVF 4 /* floating point overflow */
388 #define FPE_FLTUND 5 /* floating point underflow */
389 #define FPE_FLTRES 6 /* floating point inexact result */
390 #define FPE_FLTINV 7 /* floating point invalid operation */
391 #define FPE_FLTSUB 8 /* subscript out of range */
392 #define SEGV_MAPERR 1 /* address not mapped to object */
393 #define SEGV_ACCERR 2 /* invalid permissions for mapped object */
394 #define BUS_ADRALN 1 /* invalid address alignment */
395 #define BUS_ADRERR 2 /* non-existant physical address */
396 #define BUS_OBJERR 3 /* object specific hardware error */
397 #define TRAP_BRKPT 1 /* process breakpoint */
398 #define TRAP_TRACE 2 /* process trace trap */
399 #define CLD_EXITED 1 /* child has exited */
400 #define CLD_KILLED 2 /* child was killed */
401 #define CLD_DUMPED 3 /* child terminated abnormally */
402 #define CLD_TRAPPED 4 /* traced child has trapped */
403 #define CLD_STOPPED 5 /* child has stopped */
404 #define CLD_CONTINUED 6 /* stopped child has continued */
405 #define POLL_IN 1 /* data input available */
406 #define POLL_OUT 2 /* output buffers available */
407 #define POLL_MSG 3 /* input message available */
408 #define POLL_ERR 4 /* i/o error */
409 #define POLL_PRI 5 /* high priority input available */
410 #define POLL_HUP 6 /* device disconnected */
411 #define SI_KERNEL 0x80 /* sent by kernel */
412 #define SI_USER 0 /* sent by kill, sigsend, raise */
413 #define SI_QUEUE -1 /* sent by sigqueue */
414 #define SI_TIMER -2 /* sent by timer expiration */
415 #define SI_MESGQ -3 /* sent by real time mesq state change */
416 #define SI_ASYNCIO -4 /* sent by AIO completion */
417 #define SI_SIGIO -5 /* sent by SIGIO */
418 #define SI_TKILL -6 /* sent by tkill */
419 #define SI_ASYNCNL -60 /* sent by asynch name lookup completion */
421 #define SI_FROMUSER(sip) ((sip)->si_code <= 0)
425 #if __GLIBC_MINOR__ < 1
426 /* Type for data associated with a signal. */
433 # define __SI_MAX_SIZE 128
434 # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof(int)) - 3)
436 typedef struct siginfo
438 int si_signo; /* Signal number. */
439 int si_errno; /* If non-zero, an errno value associated with
440 this signal, as defined in <errno.h>. */
441 int si_code; /* Signal code. */
445 int _pad[__SI_PAD_SIZE];
450 __pid_t si_pid; /* Sending process ID. */
451 __uid_t si_uid; /* Real user ID of sending process. */
454 /* POSIX.1b timers. */
457 unsigned int _timer1;
458 unsigned int _timer2;
461 /* POSIX.1b signals. */
464 __pid_t si_pid; /* Sending process ID. */
465 __uid_t si_uid; /* Real user ID of sending process. */
466 sigval_t si_sigval; /* Signal value. */
472 __pid_t si_pid; /* Which child. */
473 int si_status; /* Exit value or signal. */
478 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
481 void *si_addr; /* Faulting insn/memory ref. */
487 int si_band; /* Band event for SIGPOLL. */
493 #define si_pid _sifields._kill.si_pid
494 #define si_uid _sifields._kill.si_uid
495 #define si_status _sifields._sigchld.si_status
496 #define si_utime _sifields._sigchld.si_utime
497 #define si_stime _sifields._sigchld.si_stime
498 #define si_value _sifields._rt.si_sigval
499 #define si_int _sifields._rt.si_sigval.sival_int
500 #define si_ptr _sifields._rt.si_sigval.sival_ptr
501 #define si_addr _sifields._sigfault.si_addr
502 #define si_band _sifields._sigpoll.si_band
503 #define si_fd _sifields._sigpoll.si_fd
507 static const struct xlat siginfo_codes[] = {
509 { SI_KERNEL, "SI_KERNEL" },
512 { SI_USER, "SI_USER" },
515 { SI_QUEUE, "SI_QUEUE" },
518 { SI_TIMER, "SI_TIMER" },
521 { SI_MESGQ, "SI_MESGQ" },
524 { SI_ASYNCIO, "SI_ASYNCIO" },
527 { SI_SIGIO, "SI_SIGIO" },
530 { SI_TKILL, "SI_TKILL" },
533 { SI_ASYNCNL, "SI_ASYNCNL" },
536 { SI_NOINFO, "SI_NOINFO" },
539 { SI_LWP, "SI_LWP" },
544 static const struct xlat sigill_codes[] = {
545 { ILL_ILLOPC, "ILL_ILLOPC" },
546 { ILL_ILLOPN, "ILL_ILLOPN" },
547 { ILL_ILLADR, "ILL_ILLADR" },
548 { ILL_ILLTRP, "ILL_ILLTRP" },
549 { ILL_PRVOPC, "ILL_PRVOPC" },
550 { ILL_PRVREG, "ILL_PRVREG" },
551 { ILL_COPROC, "ILL_COPROC" },
552 { ILL_BADSTK, "ILL_BADSTK" },
556 static const struct xlat sigfpe_codes[] = {
557 { FPE_INTDIV, "FPE_INTDIV" },
558 { FPE_INTOVF, "FPE_INTOVF" },
559 { FPE_FLTDIV, "FPE_FLTDIV" },
560 { FPE_FLTOVF, "FPE_FLTOVF" },
561 { FPE_FLTUND, "FPE_FLTUND" },
562 { FPE_FLTRES, "FPE_FLTRES" },
563 { FPE_FLTINV, "FPE_FLTINV" },
564 { FPE_FLTSUB, "FPE_FLTSUB" },
568 static const struct xlat sigtrap_codes[] = {
569 { TRAP_BRKPT, "TRAP_BRKPT" },
570 { TRAP_TRACE, "TRAP_TRACE" },
574 static const struct xlat sigchld_codes[] = {
575 { CLD_EXITED, "CLD_EXITED" },
576 { CLD_KILLED, "CLD_KILLED" },
577 { CLD_DUMPED, "CLD_DUMPED" },
578 { CLD_TRAPPED, "CLD_TRAPPED" },
579 { CLD_STOPPED, "CLD_STOPPED" },
580 { CLD_CONTINUED,"CLD_CONTINUED" },
584 static const struct xlat sigpoll_codes[] = {
585 { POLL_IN, "POLL_IN" },
586 { POLL_OUT, "POLL_OUT" },
587 { POLL_MSG, "POLL_MSG" },
588 { POLL_ERR, "POLL_ERR" },
589 { POLL_PRI, "POLL_PRI" },
590 { POLL_HUP, "POLL_HUP" },
594 static const struct xlat sigprof_codes[] = {
596 { PROF_SIG, "PROF_SIG" },
602 static const struct xlat sigemt_codes[] = {
604 { EMT_TAGOVF, "EMT_TAGOVF" },
610 static const struct xlat sigsegv_codes[] = {
611 { SEGV_MAPERR, "SEGV_MAPERR" },
612 { SEGV_ACCERR, "SEGV_ACCERR" },
616 static const struct xlat sigbus_codes[] = {
617 { BUS_ADRALN, "BUS_ADRALN" },
618 { BUS_ADRERR, "BUS_ADRERR" },
619 { BUS_OBJERR, "BUS_OBJERR" },
624 printsiginfo(siginfo_t *sip, int verbose)
628 if (sip->si_signo == 0) {
632 tprints("{si_signo=");
633 printsignal(sip->si_signo);
634 code = xlookup(siginfo_codes, sip->si_code);
636 switch (sip->si_signo) {
638 code = xlookup(sigtrap_codes, sip->si_code);
641 code = xlookup(sigchld_codes, sip->si_code);
644 code = xlookup(sigpoll_codes, sip->si_code);
647 code = xlookup(sigprof_codes, sip->si_code);
650 code = xlookup(sigill_codes, sip->si_code);
654 code = xlookup(sigemt_codes, sip->si_code);
658 code = xlookup(sigfpe_codes, sip->si_code);
661 code = xlookup(sigsegv_codes, sip->si_code);
664 code = xlookup(sigbus_codes, sip->si_code);
669 tprintf(", si_code=%s", code);
671 tprintf(", si_code=%#x", sip->si_code);
673 if (sip->si_code != SI_NOINFO)
677 if (sip->si_errno < 0 || sip->si_errno >= nerrnos)
678 tprintf(", si_errno=%d", sip->si_errno);
680 tprintf(", si_errno=%s",
681 errnoent[sip->si_errno]);
684 if (SI_FROMUSER(sip)) {
685 tprintf(", si_pid=%lu, si_uid=%lu",
686 (unsigned long) sip->si_pid,
687 (unsigned long) sip->si_uid);
688 switch (sip->si_code) {
699 tprintf(", si_value=%d", sip->si_int);
708 tprintf(", si_value={int=%u, ptr=%#lx}",
710 (unsigned long) sip->si_ptr);
715 #endif /* SI_FROMUSER */
717 switch (sip->si_signo) {
719 tprintf(", si_pid=%ld, si_status=",
721 if (sip->si_code == CLD_EXITED)
722 tprintf("%d", sip->si_status);
724 printsignal(sip->si_status);
728 tprintf(", si_utime=%lu, si_stime=%lu",
732 case SIGILL: case SIGFPE:
733 case SIGSEGV: case SIGBUS:
734 tprintf(", si_addr=%#lx",
735 (unsigned long) sip->si_addr);
738 switch (sip->si_code) {
739 case POLL_IN: case POLL_OUT: case POLL_MSG:
740 tprintf(", si_band=%ld",
741 (long) sip->si_band);
746 if (sip->si_pid || sip->si_uid)
747 tprintf(", si_pid=%lu, si_uid=%lu",
748 (unsigned long) sip->si_pid,
749 (unsigned long) sip->si_uid);
755 tprintf(", si_value={int=%u, ptr=%#lx}",
757 (unsigned long) sip->si_ptr);
767 sys_sigsetmask(struct tcb *tcp)
771 long_to_sigset(tcp->u_arg[0], &sigm);
772 printsigmask(&sigm, 0);
774 else if (!syserror(tcp)) {
776 long_to_sigset(tcp->u_rval, &sigm);
777 tcp->auxstr = sprintsigmask("old mask ", &sigm, 0);
779 return RVAL_HEX | RVAL_STR;
784 #ifdef HAVE_SIGACTION
786 struct old_sigaction {
787 __sighandler_t __sa_handler;
788 unsigned long sa_mask;
789 unsigned long sa_flags;
790 void (*sa_restorer)(void);
792 #define SA_HANDLER __sa_handler
795 #define SA_HANDLER sa_handler
799 sys_sigaction(struct tcb *tcp)
803 struct old_sigaction sa;
806 printsignal(tcp->u_arg[0]);
808 addr = tcp->u_arg[1];
810 addr = tcp->u_arg[2];
813 else if (!verbose(tcp))
814 tprintf("%#lx", addr);
815 else if (umove(tcp, addr, &sa) < 0)
818 /* Architectures using function pointers, like
819 * hppa, may need to manipulate the function pointer
820 * to compute the result of a comparison. However,
821 * the SA_HANDLER function pointer exists only in
822 * the address space of the traced process, and can't
823 * be manipulated by strace. In order to prevent the
824 * compiler from generating code to manipulate
825 * SA_HANDLER we cast the function pointers to long. */
826 if ((long)sa.SA_HANDLER == (long)SIG_ERR)
827 tprints("{SIG_ERR, ");
828 else if ((long)sa.SA_HANDLER == (long)SIG_DFL)
829 tprints("{SIG_DFL, ");
830 else if ((long)sa.SA_HANDLER == (long)SIG_IGN)
831 tprints("{SIG_IGN, ");
833 tprintf("{%#lx, ", (long) sa.SA_HANDLER);
834 long_to_sigset(sa.sa_mask, &sigset);
835 printsigmask(&sigset, 0);
837 printflags(sigact_flags, sa.sa_flags, "SA_???");
839 if (sa.sa_flags & SA_RESTORER)
840 tprintf(", %p", sa.sa_restorer);
847 tprintf(", %#lx", (unsigned long) sa.sa_restorer);
852 sys_signal(struct tcb *tcp)
855 printsignal(tcp->u_arg[0]);
857 switch (tcp->u_arg[1]) {
868 tprintf("%#lx", tcp->u_arg[1]);
872 else if (!syserror(tcp)) {
873 switch (tcp->u_rval) {
875 tcp->auxstr = "SIG_ERR"; break;
877 tcp->auxstr = "SIG_DFL"; break;
879 tcp->auxstr = "SIG_IGN"; break;
883 return RVAL_HEX | RVAL_STR;
888 #endif /* HAVE_SIGACTION */
891 sys_sigreturn(struct tcb *tcp)
896 struct sigcontext_struct sc;
898 if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (void *)®s) == -1)
900 if (umove(tcp, regs.ARM_sp, &sc) < 0)
902 long_to_sigset(sc.oldmask, &sigm);
903 tprints(sprintsigmask(") (mask ", &sigm, 0));
906 #elif defined(S390) || defined(S390X)
909 struct sigcontext_struct sc;
910 if (upeek(tcp, PT_GPR15, &usp) < 0)
912 if (umove(tcp, usp + __SIGNAL_FRAMESIZE, &sc) < 0)
914 tprints(sprintsigmask(") (mask ", (sigset_t *)&sc.oldmask[0], 0));
919 struct sigcontext_struct sc;
920 /* Note: on i386, sc is followed on stack by struct fpstate
921 * and after it an additional u32 extramask[1] which holds
922 * upper half of the mask. We can fetch it there
923 * if/when we'd want to display the full mask...
926 if (umove(tcp, i386_regs.esp, &sc) < 0)
928 long_to_sigset(sc.oldmask, &sigm);
929 tprints(sprintsigmask(") (mask ", &sigm, 0));
934 struct sigcontext sc;
937 /* offset of sigcontext in the kernel's sigframe structure: */
938 # define SIGFRAME_SC_OFFSET 0x90
939 if (upeek(tcp, PT_R12, &sp) < 0)
941 if (umove(tcp, sp + 16 + SIGFRAME_SC_OFFSET, &sc) < 0)
944 memcpy(&sigm, &sc.sc_mask, NSIG / 8);
945 tprints(sprintsigmask(") (mask ", &sigm, 0));
948 #elif defined(POWERPC)
951 struct sigcontext_struct sc;
953 if (upeek(tcp, sizeof(unsigned long) * PT_R1, &esp) < 0)
955 /* Skip dummy stack frame. */
957 if (current_personality == 0)
964 if (umove(tcp, esp, &sc) < 0)
966 long_to_sigset(sc.oldmask, &sigm);
967 tprints(sprintsigmask(") (mask ", &sigm, 0));
973 struct sigcontext sc;
975 if (upeek(tcp, 4*PT_USP, &usp) < 0)
977 if (umove(tcp, usp, &sc) < 0)
979 long_to_sigset(sc.sc_mask, &sigm);
980 tprints(sprintsigmask(") (mask ", &sigm, 0));
986 struct sigcontext_struct sc;
988 if (upeek(tcp, REG_FP, &fp) < 0)
990 if (umove(tcp, fp, &sc) < 0)
992 long_to_sigset(sc.sc_mask, &sigm);
993 tprints(sprintsigmask(") (mask ", &sigm, 0));
996 #elif defined(SPARC) || defined(SPARC64)
1002 if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
1003 perror("sigreturn: PTRACE_GETREGS");
1006 i1 = regs.u_regs[U_REG_O1];
1007 if (umove(tcp, i1, &si) < 0) {
1008 perror("sigreturn: umove");
1011 long_to_sigset(si.si_mask, &sigm);
1012 tprints(sprintsigmask(") (mask ", &sigm, 0));
1015 #elif defined(LINUX_MIPSN32) || defined(LINUX_MIPSN64)
1016 /* This decodes rt_sigreturn. The 64-bit ABIs do not have
1018 if (entering(tcp)) {
1022 if (upeek(tcp, REG_SP, &sp) < 0)
1024 /* There are six words followed by a 128-byte siginfo. */
1025 sp = sp + 6 * 4 + 128;
1026 if (umove(tcp, sp, &uc) < 0)
1028 long_to_sigset(*(long *) &uc.uc_sigmask, &sigm);
1029 tprints(sprintsigmask(") (mask ", &sigm, 0));
1033 if (entering(tcp)) {
1035 struct pt_regs regs;
1038 if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
1039 perror("sigreturn: PTRACE_GETREGS");
1043 if (umove(tcp, sp, &si) < 0)
1045 long_to_sigset(si.si_mask, &sigm);
1046 tprints(sprintsigmask(") (mask ", &sigm, 0));
1049 #elif defined(CRISV10) || defined(CRISV32)
1050 if (entering(tcp)) {
1051 struct sigcontext sc;
1052 long regs[PT_MAX+1];
1054 if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long)regs) < 0) {
1055 perror("sigreturn: PTRACE_GETREGS");
1058 if (umove(tcp, regs[PT_USP], &sc) < 0)
1060 long_to_sigset(sc.oldmask, &sigm);
1061 tprints(sprintsigmask(") (mask ", &sigm, 0));
1065 if (entering(tcp)) {
1070 /* offset of ucontext in the kernel's sigframe structure */
1071 # define SIGFRAME_UC_OFFSET C_ABI_SAVE_AREA_SIZE + sizeof(struct siginfo)
1072 if (upeek(tcp, PTREGS_OFFSET_SP, &sp) < 0)
1074 if (umove(tcp, sp + SIGFRAME_UC_OFFSET, &uc) < 0)
1077 memcpy(&sigm, &uc.uc_sigmask, NSIG / 8);
1078 tprints(sprintsigmask(") (mask ", &sigm, 0));
1081 #elif defined(MICROBLAZE)
1082 /* TODO: Verify that this is correct... */
1083 if (entering(tcp)) {
1084 struct sigcontext sc;
1087 /* Read r1, the stack pointer. */
1088 if (upeek(tcp, 1 * 4, &sp) < 0)
1090 if (umove(tcp, sp, &sc) < 0)
1092 long_to_sigset(sc.oldmask, &sigm);
1093 tprints(sprintsigmask(") (mask ", &sigm, 0));
1097 #warning No sys_sigreturn() for this architecture
1098 #warning (no problem, just a reminder :-)
1104 sys_siggetmask(struct tcb *tcp)
1108 long_to_sigset(tcp->u_rval, &sigm);
1109 tcp->auxstr = sprintsigmask("mask ", &sigm, 0);
1111 return RVAL_HEX | RVAL_STR;
1115 sys_sigsuspend(struct tcb *tcp)
1117 if (entering(tcp)) {
1119 long_to_sigset(tcp->u_arg[2], &sigm);
1120 printsigmask(&sigm, 0);
1125 #if !defined SS_ONSTACK
1126 #define SS_ONSTACK 1
1127 #define SS_DISABLE 2
1128 #if __GLIBC_MINOR__ == 0
1138 static const struct xlat sigaltstack_flags[] = {
1139 { SS_ONSTACK, "SS_ONSTACK" },
1140 { SS_DISABLE, "SS_DISABLE" },
1145 print_stack_t(struct tcb *tcp, unsigned long addr)
1148 if (umove(tcp, addr, &ss) < 0)
1150 tprintf("{ss_sp=%#lx, ss_flags=", (unsigned long) ss.ss_sp);
1151 printflags(sigaltstack_flags, ss.ss_flags, "SS_???");
1152 tprintf(", ss_size=%lu}", (unsigned long) ss.ss_size);
1157 sys_sigaltstack(struct tcb *tcp)
1159 if (entering(tcp)) {
1160 if (tcp->u_arg[0] == 0)
1162 else if (print_stack_t(tcp, tcp->u_arg[0]) < 0)
1167 if (tcp->u_arg[1] == 0)
1169 else if (print_stack_t(tcp, tcp->u_arg[1]) < 0)
1175 #ifdef HAVE_SIGACTION
1178 sys_sigprocmask(struct tcb *tcp)
1181 if (entering(tcp)) {
1182 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1184 printsigmask(tcp->u_arg[1], 0);
1186 else if (!syserror(tcp)) {
1187 tcp->auxstr = sprintsigmask("old mask ", tcp->u_rval, 0);
1188 return RVAL_HEX | RVAL_STR;
1191 if (entering(tcp)) {
1192 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1194 print_sigset(tcp, tcp->u_arg[1], 0);
1200 else if (syserror(tcp))
1201 tprintf("%#lx", tcp->u_arg[2]);
1203 print_sigset(tcp, tcp->u_arg[2], 0);
1209 #endif /* HAVE_SIGACTION */
1212 sys_kill(struct tcb *tcp)
1214 if (entering(tcp)) {
1215 long pid = tcp->u_arg[0];
1216 #if SUPPORTED_PERSONALITIES > 1
1217 /* Sign-extend a 32-bit value when that's what it is. */
1218 if (personality_wordsize[current_personality] < sizeof pid)
1219 pid = (long) (int) pid;
1221 tprintf("%ld, %s", pid, signame(tcp->u_arg[1]));
1227 sys_tgkill(struct tcb *tcp)
1229 if (entering(tcp)) {
1230 tprintf("%ld, %ld, %s",
1231 tcp->u_arg[0], tcp->u_arg[1], signame(tcp->u_arg[2]));
1237 sys_sigpending(struct tcb *tcp)
1243 tprintf("%#lx", tcp->u_arg[0]);
1244 else if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1247 printsigmask(&sigset, 0);
1253 sys_rt_sigprocmask(struct tcb *tcp)
1257 /* Note: arg[3] is the length of the sigset. */
1258 if (entering(tcp)) {
1259 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1263 else if (copy_sigset_len(tcp, tcp->u_arg[1], &sigset, tcp->u_arg[3]) < 0)
1264 tprintf("%#lx, ", tcp->u_arg[1]);
1266 printsigmask(&sigset, 1);
1273 else if (syserror(tcp))
1274 tprintf("%#lx", tcp->u_arg[2]);
1275 else if (copy_sigset_len(tcp, tcp->u_arg[2], &sigset, tcp->u_arg[3]) < 0)
1278 printsigmask(&sigset, 1);
1279 tprintf(", %lu", tcp->u_arg[3]);
1284 /* Structure describing the action to be taken when a signal arrives. */
1285 struct new_sigaction
1287 __sighandler_t __sa_handler;
1288 unsigned long sa_flags;
1289 void (*sa_restorer) (void);
1290 /* Kernel treats sa_mask as an array of longs. */
1291 unsigned long sa_mask[NSIG / sizeof(long) ? NSIG / sizeof(long) : 1];
1293 /* Same for i386-on-x86_64 and similar cases */
1294 struct new_sigaction32
1296 uint32_t __sa_handler;
1298 uint32_t sa_restorer;
1299 uint32_t sa_mask[2 * (NSIG / sizeof(long) ? NSIG / sizeof(long) : 1)];
1303 sys_rt_sigaction(struct tcb *tcp)
1305 struct new_sigaction sa;
1310 if (entering(tcp)) {
1311 printsignal(tcp->u_arg[0]);
1313 addr = tcp->u_arg[1];
1315 addr = tcp->u_arg[2];
1321 if (!verbose(tcp)) {
1322 tprintf("%#lx", addr);
1325 #if SUPPORTED_PERSONALITIES > 1
1326 if (personality_wordsize[current_personality] != sizeof(sa.sa_flags)
1327 && personality_wordsize[current_personality] == 4
1329 struct new_sigaction32 sa32;
1330 r = umove(tcp, addr, &sa32);
1332 memset(&sa, 0, sizeof(sa));
1333 sa.__sa_handler = (void*)(unsigned long)sa32.__sa_handler;
1334 sa.sa_flags = sa32.sa_flags;
1335 sa.sa_restorer = (void*)(unsigned long)sa32.sa_restorer;
1336 /* Kernel treats sa_mask as an array of longs.
1337 * For 32-bit process, "long" is uint32_t, thus, for example,
1338 * 32th bit in sa_mask will end up as bit 0 in sa_mask[1].
1339 * But for (64-bit) kernel, 32th bit in sa_mask is
1340 * 32th bit in 0th (64-bit) long!
1341 * For little-endian, it's the same.
1342 * For big-endian, we swap 32-bit words.
1344 sa.sa_mask[0] = sa32.sa_mask[0] + ((long)(sa32.sa_mask[1]) << 32);
1349 r = umove(tcp, addr, &sa);
1355 /* Architectures using function pointers, like
1356 * hppa, may need to manipulate the function pointer
1357 * to compute the result of a comparison. However,
1358 * the SA_HANDLER function pointer exists only in
1359 * the address space of the traced process, and can't
1360 * be manipulated by strace. In order to prevent the
1361 * compiler from generating code to manipulate
1362 * SA_HANDLER we cast the function pointers to long. */
1363 if ((long)sa.__sa_handler == (long)SIG_ERR)
1364 tprints("{SIG_ERR, ");
1365 else if ((long)sa.__sa_handler == (long)SIG_DFL)
1366 tprints("{SIG_DFL, ");
1367 else if ((long)sa.__sa_handler == (long)SIG_IGN)
1368 tprints("{SIG_IGN, ");
1370 tprintf("{%#lx, ", (long) sa.__sa_handler);
1371 /* Questionable code below.
1372 * Kernel won't handle sys_rt_sigaction
1373 * with wrong sigset size (just returns EINVAL)
1374 * therefore tcp->u_arg[3(4)] _must_ be NSIG / 8 here,
1375 * and we always use smaller memcpy. */
1376 sigemptyset(&sigset);
1378 if (tcp->u_arg[4] <= sizeof(sigset))
1379 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[4]);
1381 if (tcp->u_arg[3] <= sizeof(sigset))
1382 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[3]);
1385 memcpy(&sigset, &sa.sa_mask, sizeof(sigset));
1386 printsigmask(&sigset, 1);
1388 printflags(sigact_flags, sa.sa_flags, "SA_???");
1390 if (sa.sa_flags & SA_RESTORER)
1391 tprintf(", %p", sa.sa_restorer);
1400 tprintf(", %#lx, %lu", tcp->u_arg[3], tcp->u_arg[4]);
1401 #elif defined(ALPHA)
1402 tprintf(", %lu, %#lx", tcp->u_arg[3], tcp->u_arg[4]);
1404 tprintf(", %lu", tcp->u_arg[3]);
1410 sys_rt_sigpending(struct tcb *tcp)
1416 tprintf("%#lx", tcp->u_arg[0]);
1417 else if (copy_sigset_len(tcp, tcp->u_arg[0],
1418 &sigset, tcp->u_arg[1]) < 0)
1421 printsigmask(&sigset, 1);
1427 sys_rt_sigsuspend(struct tcb *tcp)
1429 if (entering(tcp)) {
1431 if (copy_sigset_len(tcp, tcp->u_arg[0], &sigm, tcp->u_arg[1]) < 0)
1434 printsigmask(&sigm, 1);
1440 print_sigqueueinfo(struct tcb *tcp, int sig, unsigned long uinfo)
1446 if (umove(tcp, uinfo, &si) < 0)
1447 tprintf("%#lx", uinfo);
1449 printsiginfo(&si, verbose(tcp));
1453 sys_rt_sigqueueinfo(struct tcb *tcp)
1455 if (entering(tcp)) {
1456 tprintf("%lu, ", tcp->u_arg[0]);
1457 print_sigqueueinfo(tcp, tcp->u_arg[1], tcp->u_arg[2]);
1463 sys_rt_tgsigqueueinfo(struct tcb *tcp)
1465 if (entering(tcp)) {
1466 tprintf("%lu, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
1467 print_sigqueueinfo(tcp, tcp->u_arg[2], tcp->u_arg[3]);
1472 int sys_rt_sigtimedwait(struct tcb *tcp)
1474 if (entering(tcp)) {
1477 if (copy_sigset_len(tcp, tcp->u_arg[0],
1478 &sigset, tcp->u_arg[3]) < 0)
1481 printsigmask(&sigset, 1);
1483 /* This is the only "return" parameter, */
1484 if (tcp->u_arg[1] != 0)
1486 /* ... if it's NULL, can decode all on entry */
1489 else if (tcp->u_arg[1] != 0) {
1490 /* syscall exit, and u_arg[1] wasn't NULL */
1492 tprintf("%#lx, ", tcp->u_arg[1]);
1495 if (umove(tcp, tcp->u_arg[1], &si) < 0)
1496 tprintf("%#lx, ", tcp->u_arg[1]);
1498 printsiginfo(&si, verbose(tcp));
1504 /* syscall exit, and u_arg[1] was NULL */
1507 print_timespec(tcp, tcp->u_arg[2]);
1508 tprintf(", %d", (int) tcp->u_arg[3]);
1513 sys_restart_syscall(struct tcb *tcp)
1516 tprints("<... resuming interrupted call ...>");
1521 do_signalfd(struct tcb *tcp, int flags_arg)
1523 if (entering(tcp)) {
1524 printfd(tcp, tcp->u_arg[0]);
1526 print_sigset(tcp, tcp->u_arg[1], 1);
1527 tprintf(", %lu", tcp->u_arg[2]);
1528 if (flags_arg >= 0) {
1530 printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
1537 sys_signalfd(struct tcb *tcp)
1539 return do_signalfd(tcp, -1);
1543 sys_signalfd4(struct tcb *tcp)
1545 return do_signalfd(tcp, 3);