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265 lines
6.6 KiB
265 lines
6.6 KiB
/* |
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* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> |
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* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> |
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* Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com> |
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* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> |
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* Copyright (c) 2001 John Hughes <john@Calva.COM> |
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* Copyright (c) 2013 Denys Vlasenko <vda.linux@googlemail.com> |
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* Copyright (c) 2011-2015 Dmitry V. Levin <ldv@altlinux.org> |
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* Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com> |
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* Copyright (c) 2015-2017 The strace developers. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "defs.h" |
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#include DEF_MPERS_TYPE(siginfo_t) |
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#include <signal.h> |
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#include <linux/audit.h> |
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#include MPERS_DEFS |
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#ifndef IN_MPERS |
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#include "printsiginfo.h" |
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#endif |
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#include "xlat/audit_arch.h" |
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#include "xlat/sigbus_codes.h" |
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#include "xlat/sigchld_codes.h" |
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#include "xlat/sigfpe_codes.h" |
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#include "xlat/sigill_codes.h" |
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#include "xlat/siginfo_codes.h" |
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#include "xlat/sigpoll_codes.h" |
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#include "xlat/sigprof_codes.h" |
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#include "xlat/sigsegv_codes.h" |
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#include "xlat/sigsys_codes.h" |
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#include "xlat/sigtrap_codes.h" |
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#ifdef SIGEMT |
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# include "xlat/sigemt_codes.h" |
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#endif |
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#ifndef SI_FROMUSER |
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# define SI_FROMUSER(sip) ((sip)->si_code <= 0) |
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#endif |
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static void |
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printsigsource(const siginfo_t *sip) |
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{ |
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tprintf(", si_pid=%u, si_uid=%u", |
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(unsigned int) sip->si_pid, |
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(unsigned int) sip->si_uid); |
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} |
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static void |
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printsigval(const siginfo_t *sip) |
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{ |
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tprintf(", si_value={int=%d, ptr=", sip->si_int); |
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printaddr(ptr_to_kulong(sip->si_ptr)); |
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tprints("}"); |
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} |
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static void |
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print_si_code(int si_signo, unsigned int si_code) |
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{ |
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const char *code = xlookup(siginfo_codes, si_code); |
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if (!code) { |
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switch (si_signo) { |
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case SIGTRAP: |
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code = xlookup(sigtrap_codes, si_code); |
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break; |
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case SIGCHLD: |
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code = xlookup(sigchld_codes, si_code); |
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break; |
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case SIGPOLL: |
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code = xlookup(sigpoll_codes, si_code); |
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break; |
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case SIGPROF: |
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code = xlookup(sigprof_codes, si_code); |
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break; |
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case SIGILL: |
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code = xlookup(sigill_codes, si_code); |
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break; |
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#ifdef SIGEMT |
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case SIGEMT: |
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code = xlookup(sigemt_codes, si_code); |
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break; |
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#endif |
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case SIGFPE: |
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code = xlookup(sigfpe_codes, si_code); |
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break; |
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case SIGSEGV: |
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code = xlookup(sigsegv_codes, si_code); |
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break; |
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case SIGBUS: |
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code = xlookup(sigbus_codes, si_code); |
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break; |
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case SIGSYS: |
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code = xlookup(sigsys_codes, si_code); |
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break; |
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} |
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} |
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if (code) |
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tprints(code); |
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else |
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tprintf("%#x", si_code); |
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} |
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static void |
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print_si_info(const siginfo_t *sip) |
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{ |
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if (sip->si_errno) { |
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tprints(", si_errno="); |
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if ((unsigned) sip->si_errno < nerrnos |
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&& errnoent[sip->si_errno]) |
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tprints(errnoent[sip->si_errno]); |
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else |
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tprintf("%d", sip->si_errno); |
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} |
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if (SI_FROMUSER(sip)) { |
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switch (sip->si_code) { |
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case SI_USER: |
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printsigsource(sip); |
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break; |
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case SI_TKILL: |
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printsigsource(sip); |
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break; |
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#if defined HAVE_SIGINFO_T_SI_TIMERID && defined HAVE_SIGINFO_T_SI_OVERRUN |
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case SI_TIMER: |
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tprintf(", si_timerid=%#x, si_overrun=%d", |
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sip->si_timerid, sip->si_overrun); |
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printsigval(sip); |
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break; |
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#endif |
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default: |
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printsigsource(sip); |
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if (sip->si_ptr) |
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printsigval(sip); |
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break; |
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} |
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} else { |
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switch (sip->si_signo) { |
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case SIGCHLD: |
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printsigsource(sip); |
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tprints(", si_status="); |
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if (sip->si_code == CLD_EXITED) |
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tprintf("%d", sip->si_status); |
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else |
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printsignal(sip->si_status); |
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tprintf(", si_utime=%llu, si_stime=%llu", |
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zero_extend_signed_to_ull(sip->si_utime), |
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zero_extend_signed_to_ull(sip->si_stime)); |
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break; |
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case SIGILL: case SIGFPE: |
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case SIGSEGV: case SIGBUS: |
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tprints(", si_addr="); |
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printaddr(ptr_to_kulong(sip->si_addr)); |
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break; |
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case SIGPOLL: |
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switch (sip->si_code) { |
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case POLL_IN: case POLL_OUT: case POLL_MSG: |
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tprintf(", si_band=%ld", |
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(long) sip->si_band); |
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break; |
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} |
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break; |
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#ifdef HAVE_SIGINFO_T_SI_SYSCALL |
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case SIGSYS: { |
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const char *scname = |
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syscall_name((unsigned) sip->si_syscall); |
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tprints(", si_call_addr="); |
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printaddr(ptr_to_kulong(sip->si_call_addr)); |
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tprints(", si_syscall="); |
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if (scname) |
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tprintf("__NR_%s", scname); |
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else |
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tprintf("%u", (unsigned) sip->si_syscall); |
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tprints(", si_arch="); |
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printxval(audit_arch, sip->si_arch, "AUDIT_ARCH_???"); |
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break; |
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} |
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#endif |
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default: |
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if (sip->si_pid || sip->si_uid) |
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printsigsource(sip); |
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if (sip->si_ptr) |
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printsigval(sip); |
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} |
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} |
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} |
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#ifdef IN_MPERS |
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static |
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#endif |
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void |
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printsiginfo(const siginfo_t *sip) |
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{ |
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if (sip->si_signo == 0) { |
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tprints("{}"); |
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return; |
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} |
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tprints("{si_signo="); |
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printsignal(sip->si_signo); |
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tprints(", si_code="); |
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print_si_code(sip->si_signo, sip->si_code); |
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#ifdef SI_NOINFO |
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if (sip->si_code != SI_NOINFO) |
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#endif |
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print_si_info(sip); |
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tprints("}"); |
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} |
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MPERS_PRINTER_DECL(void, printsiginfo_at, |
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struct tcb *const tcp, const kernel_ulong_t addr) |
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{ |
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siginfo_t si; |
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if (!umove_or_printaddr(tcp, addr, &si)) |
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printsiginfo(&si); |
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} |
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static bool |
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print_siginfo_t(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data) |
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{ |
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printsiginfo((const siginfo_t *) elem_buf); |
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return true; |
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} |
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MPERS_PRINTER_DECL(void, print_siginfo_array, struct tcb *const tcp, |
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const kernel_ulong_t addr, const kernel_ulong_t len) |
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{ |
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siginfo_t si; |
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print_array(tcp, addr, len, &si, sizeof(si), |
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umoven_or_printaddr, print_siginfo_t, 0); |
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}
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