Dmitry V. Levin | 537c964 | 2015-03-27 23:28:15 +0000 | [diff] [blame] | 1 | #include "defs.h" |
| 2 | |
| 3 | #include "xlat/sigbus_codes.h" |
| 4 | #include "xlat/sigchld_codes.h" |
| 5 | #include "xlat/sigfpe_codes.h" |
| 6 | #include "xlat/sigill_codes.h" |
| 7 | #include "xlat/siginfo_codes.h" |
| 8 | #include "xlat/sigpoll_codes.h" |
| 9 | #include "xlat/sigprof_codes.h" |
| 10 | #include "xlat/sigsegv_codes.h" |
| 11 | #include "xlat/sigsys_codes.h" |
| 12 | #include "xlat/sigtrap_codes.h" |
| 13 | |
| 14 | #ifdef SIGEMT |
| 15 | # include "xlat/sigemt_codes.h" |
| 16 | #endif |
| 17 | |
| 18 | #ifndef SI_FROMUSER |
| 19 | # define SI_FROMUSER(sip) ((sip)->si_code <= 0) |
| 20 | #endif |
| 21 | |
| 22 | static void |
| 23 | printsigsource(const siginfo_t *sip) |
| 24 | { |
| 25 | tprintf(", si_pid=%lu, si_uid=%lu", |
| 26 | (unsigned long) sip->si_pid, |
| 27 | (unsigned long) sip->si_uid); |
| 28 | } |
| 29 | |
| 30 | static void |
| 31 | printsigval(const siginfo_t *sip, bool verbose) |
| 32 | { |
| 33 | if (!verbose) |
| 34 | tprints(", ..."); |
| 35 | else |
| 36 | tprintf(", si_value={int=%u, ptr=%#lx}", |
| 37 | sip->si_int, |
| 38 | (unsigned long) sip->si_ptr); |
| 39 | } |
| 40 | |
| 41 | static void |
| 42 | print_si_code(int si_signo, int si_code) |
| 43 | { |
| 44 | const char *code = xlookup(siginfo_codes, si_code); |
| 45 | |
| 46 | if (!code) { |
| 47 | switch (si_signo) { |
| 48 | case SIGTRAP: |
| 49 | code = xlookup(sigtrap_codes, si_code); |
| 50 | break; |
| 51 | case SIGCHLD: |
| 52 | code = xlookup(sigchld_codes, si_code); |
| 53 | break; |
| 54 | case SIGPOLL: |
| 55 | code = xlookup(sigpoll_codes, si_code); |
| 56 | break; |
| 57 | case SIGPROF: |
| 58 | code = xlookup(sigprof_codes, si_code); |
| 59 | break; |
| 60 | case SIGILL: |
| 61 | code = xlookup(sigill_codes, si_code); |
| 62 | break; |
| 63 | #ifdef SIGEMT |
| 64 | case SIGEMT: |
| 65 | code = xlookup(sigemt_codes, si_code); |
| 66 | break; |
| 67 | #endif |
| 68 | case SIGFPE: |
| 69 | code = xlookup(sigfpe_codes, si_code); |
| 70 | break; |
| 71 | case SIGSEGV: |
| 72 | code = xlookup(sigsegv_codes, si_code); |
| 73 | break; |
| 74 | case SIGBUS: |
| 75 | code = xlookup(sigbus_codes, si_code); |
| 76 | break; |
| 77 | case SIGSYS: |
| 78 | code = xlookup(sigsys_codes, si_code); |
| 79 | break; |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | if (code) |
| 84 | tprints(code); |
| 85 | else |
| 86 | tprintf("%#x", si_code); |
| 87 | } |
| 88 | |
| 89 | static void |
| 90 | print_si_info(const siginfo_t *sip, bool verbose) |
| 91 | { |
| 92 | if (sip->si_errno) { |
| 93 | tprints(", si_errno="); |
| 94 | if ((unsigned) sip->si_errno < nerrnos |
| 95 | && errnoent[sip->si_errno]) |
| 96 | tprints(errnoent[sip->si_errno]); |
| 97 | else |
| 98 | tprintf("%d", sip->si_errno); |
| 99 | } |
| 100 | |
| 101 | if (SI_FROMUSER(sip)) { |
| 102 | switch (sip->si_code) { |
| 103 | case SI_USER: |
| 104 | printsigsource(sip); |
| 105 | break; |
| 106 | case SI_TKILL: |
| 107 | printsigsource(sip); |
| 108 | break; |
| 109 | #if defined HAVE_SIGINFO_T_SI_TIMERID && defined HAVE_SIGINFO_T_SI_OVERRUN |
| 110 | case SI_TIMER: |
| 111 | tprintf(", si_timerid=%#x, si_overrun=%d", |
| 112 | sip->si_timerid, sip->si_overrun); |
| 113 | printsigval(sip, verbose); |
| 114 | break; |
| 115 | #endif |
| 116 | default: |
| 117 | printsigsource(sip); |
| 118 | if (sip->si_ptr) |
| 119 | printsigval(sip, verbose); |
| 120 | break; |
| 121 | } |
| 122 | } else { |
| 123 | switch (sip->si_signo) { |
| 124 | case SIGCHLD: |
| 125 | printsigsource(sip); |
| 126 | tprints(", si_status="); |
| 127 | if (sip->si_code == CLD_EXITED) |
| 128 | tprintf("%d", sip->si_status); |
| 129 | else |
| 130 | printsignal(sip->si_status); |
| 131 | if (!verbose) |
| 132 | tprints(", ..."); |
| 133 | else |
| 134 | tprintf(", si_utime=%llu, si_stime=%llu", |
| 135 | (unsigned long long) sip->si_utime, |
| 136 | (unsigned long long) sip->si_stime); |
| 137 | break; |
| 138 | case SIGILL: case SIGFPE: |
| 139 | case SIGSEGV: case SIGBUS: |
| 140 | tprintf(", si_addr=%#lx", |
| 141 | (unsigned long) sip->si_addr); |
| 142 | break; |
| 143 | case SIGPOLL: |
| 144 | switch (sip->si_code) { |
| 145 | case POLL_IN: case POLL_OUT: case POLL_MSG: |
| 146 | tprintf(", si_band=%ld", |
| 147 | (long) sip->si_band); |
| 148 | break; |
| 149 | } |
| 150 | break; |
| 151 | #ifdef HAVE_SIGINFO_T_SI_SYSCALL |
| 152 | case SIGSYS: |
| 153 | tprintf(", si_call_addr=%#lx, si_syscall=%d, si_arch=%u", |
| 154 | (unsigned long) sip->si_call_addr, |
| 155 | sip->si_syscall, sip->si_arch); |
| 156 | break; |
| 157 | #endif |
| 158 | default: |
| 159 | if (sip->si_pid || sip->si_uid) |
| 160 | printsigsource(sip); |
| 161 | if (sip->si_ptr) |
| 162 | printsigval(sip, verbose); |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | void |
| 168 | printsiginfo(const siginfo_t *sip, bool verbose) |
| 169 | { |
| 170 | if (sip->si_signo == 0) { |
| 171 | tprints("{}"); |
| 172 | return; |
| 173 | } |
| 174 | tprints("{si_signo="); |
| 175 | printsignal(sip->si_signo); |
| 176 | |
| 177 | tprints(", si_code="); |
| 178 | print_si_code(sip->si_signo, sip->si_code); |
| 179 | |
| 180 | #ifdef SI_NOINFO |
| 181 | if (sip->si_code != SI_NOINFO) |
| 182 | #endif |
| 183 | print_si_info(sip, verbose); |
| 184 | |
| 185 | tprints("}"); |
| 186 | } |
| 187 | |
| 188 | void |
| 189 | printsiginfo_at(struct tcb *tcp, long addr) |
| 190 | { |
| 191 | siginfo_t si; |
| 192 | if (!addr) { |
| 193 | tprints("NULL"); |
| 194 | return; |
| 195 | } |
| 196 | if (syserror(tcp) || umove(tcp, addr, &si) < 0) { |
| 197 | tprintf("%#lx", addr); |
| 198 | return; |
| 199 | } |
| 200 | printsiginfo(&si, verbose(tcp)); |
| 201 | } |