1 /* Machine independent support for SVR4 /proc (process file system) for GDB. 2 3 Copyright (C) 1999-2016 Free Software Foundation, Inc. 4 5 Written by Michael Snyder at Cygnus Solutions. 6 Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others. 7 8 This file is part of GDB. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 22 23 /* 24 * Pretty-print trace of api calls to the /proc api 25 * (ioctl or read/write calls). 26 * 27 */ 28 29 #include "defs.h" 30 #include "gdbcmd.h" 31 #include "completer.h" 32 33 #if defined (NEW_PROC_API) 34 #define _STRUCTURED_PROC 1 35 #endif 36 37 #include <sys/types.h> 38 #include <sys/procfs.h> 39 #ifdef HAVE_SYS_PROC_H 40 #include <sys/proc.h> /* for struct proc */ 41 #endif 42 #ifdef HAVE_SYS_USER_H 43 #include <sys/user.h> /* for struct user */ 44 #endif 45 #include <fcntl.h> /* for O_RDWR etc. */ 46 #include "gdb_wait.h" 47 48 #include "proc-utils.h" 49 50 /* Much of the information used in the /proc interface, particularly for 51 printing status information, is kept as tables of structures of the 52 following form. These tables can be used to map numeric values to 53 their symbolic names and to a string that describes their specific use. */ 54 55 struct trans { 56 long value; /* The numeric value */ 57 char *name; /* The equivalent symbolic value */ 58 char *desc; /* Short description of value */ 59 }; 60 61 static int procfs_trace = 0; 62 static FILE *procfs_file = NULL; 63 static char *procfs_filename = "procfs_trace"; 64 65 static void 66 prepare_to_trace (void) 67 { 68 if (procfs_trace) /* if procfs tracing turned on */ 69 if (procfs_file == NULL) /* if output file not yet open */ 70 if (procfs_filename != NULL) /* if output filename known */ 71 procfs_file = fopen (procfs_filename, "a"); /* open output file */ 72 } 73 74 static void 75 set_procfs_trace_cmd (char *args, int from_tty, struct cmd_list_element *c) 76 { 77 #if 0 /* not sure what I might actually need to do here, if anything */ 78 if (procfs_file) 79 fflush (procfs_file); 80 #endif 81 } 82 83 static void 84 set_procfs_file_cmd (char *args, int from_tty, struct cmd_list_element *c) 85 { 86 /* Just changed the filename for procfs tracing. 87 If a file was already open, close it. */ 88 if (procfs_file) 89 fclose (procfs_file); 90 procfs_file = NULL; 91 } 92 93 94 #ifndef NEW_PROC_API 95 96 static struct trans ioctl_table[] = { 97 #ifdef PIOCACINFO /* irix */ 98 { PIOCACINFO, "PIOCACINFO", "get process account info" }, 99 #endif 100 { PIOCACTION, "PIOCACTION", "get signal action structs" }, 101 #ifdef PIOCARGUMENTS /* osf */ 102 { PIOCARGUMENTS, "PIOCARGUMENTS", "command line args" }, 103 #endif 104 #ifdef PIOCAUXV /* solaris aux vectors */ 105 { PIOCAUXV, "PIOCAUXV", "get aux vector" }, 106 { PIOCNAUXV, "PIOCNAUXV", "get number of aux vector entries" }, 107 #endif /* AUXV */ 108 { PIOCCFAULT, "PIOCCFAULT", "clear current fault" }, 109 { PIOCCRED, "PIOCCRED", "get process credentials" }, 110 #ifdef PIOCENEVCTRS /* irix event counters */ 111 { PIOCENEVCTRS, "PIOCENEVCTRS", "acquire and start event counters" }, 112 { PIOCGETEVCTRL, "PIOCGETEVCTRL", "get control info of event counters" }, 113 { PIOCGETEVCTRS, "PIOCGETEVCTRS", "dump event counters" }, 114 { PIOCGETPREVCTRS, "PIOCGETPREVCTRS", "dump event counters & prusage info" }, 115 { PIOCRELEVCTRS, "PIOCRELEVCTRS", "release/stop event counters" }, 116 { PIOCSETEVCTRL, "PIOCSETEVCTRL", "set control info of event counters" }, 117 { PIOCGETPTIMER, "PIOCGETPTIMER", "get process timers" }, 118 #endif /* irix event counters */ 119 { PIOCGENTRY, "PIOCGENTRY", "get traced syscall entry set" }, 120 #if defined (PIOCGETPR) 121 { PIOCGETPR, "PIOCGETPR", "read struct proc" }, 122 #endif 123 #if defined (PIOCGETU) 124 { PIOCGETU, "PIOCGETU", "read user area" }, 125 #endif 126 #if defined (PIOCGETUTK) && (defined(KERNEL) || defined(SHOW_UTT)) /* osf */ 127 { PIOCGETUTK, "PIOCGETUTK", "get the utask struct" }, 128 #endif 129 { PIOCGEXIT, "PIOCGEXIT", "get traced syscall exit set" }, 130 { PIOCGFAULT, "PIOCGFAULT", "get traced fault set" }, 131 #ifdef PIOCGFPCR /* osf */ 132 { PIOCGFPCR, "PIOCGFPCR", "get FP control register" }, 133 { PIOCSFPCR, "PIOCSFPCR", "set FP conrtol register" }, 134 #endif 135 { PIOCGFPREG, "PIOCGFPREG", "get floating point registers" }, 136 { PIOCGHOLD, "PIOCGHOLD", "get held signal set" }, 137 { PIOCGREG, "PIOCGREG", "get general registers" }, 138 { PIOCGROUPS, "PIOCGROUPS", "get supplementary groups" }, 139 #ifdef PIOCGSPCACT /* osf */ 140 { PIOCGSPCACT, "PIOCGSPCACT", "get special action" }, 141 { PIOCSSPCACT, "PIOCSSPCACT", "set special action" }, 142 #endif 143 { PIOCGTRACE, "PIOCGTRACE", "get traced signal set" }, 144 #ifdef PIOCGWATCH /* irix watchpoints */ 145 { PIOCGWATCH, "PIOCGWATCH", "get watchpoint" }, 146 { PIOCSWATCH, "PIOCSWATCH", "set watchpoint" }, 147 { PIOCNWATCH, "PIOCNWATCH", "get number of watchpoints" }, 148 #endif /* irix watchpoints */ 149 #ifdef PIOCGWIN /* solaris sparc */ 150 { PIOCGWIN, "PIOCGWIN", "get gwindows_t" }, 151 #endif 152 #ifdef PIOCGXREG /* solaris sparc extra regs */ 153 { PIOCGXREGSIZE, "PIOCXREGSIZE", "get extra register state size" }, 154 { PIOCGXREG, "PIOCGXREG", "get extra register state" }, 155 { PIOCSXREG, "PIOCSXREG", "set extra register state" }, 156 #endif /* XREG */ 157 { PIOCKILL, "PIOCKILL", "send signal" }, 158 #ifdef PIOCLDT /* solaris i386 */ 159 { PIOCLDT, "PIOCLDT", "get LDT" }, 160 { PIOCNLDT, "PIOCNLDT", "get number of LDT entries" }, 161 #endif 162 #ifdef PIOCLSTATUS /* solaris */ 163 { PIOCLSTATUS, "PIOCLSTATUS", "get status of all lwps" }, 164 { PIOCLUSAGE, "PIOCLUSAGE", "get resource usage of all lwps" }, 165 { PIOCOPENLWP, "PIOCOPENLWP", "get lwp file descriptor" }, 166 { PIOCLWPIDS, "PIOCLWPIDS", "get lwp identifiers" }, 167 #endif /* LWP */ 168 { PIOCMAP, "PIOCMAP", "get memory map information" }, 169 { PIOCMAXSIG, "PIOCMAXSIG", "get max signal number" }, 170 { PIOCNICE, "PIOCNICE", "set nice priority" }, 171 { PIOCNMAP, "PIOCNMAP", "get number of memory mappings" }, 172 { PIOCOPENM, "PIOCOPENM", "open mapped object for reading" }, 173 #ifdef PIOCOPENMOBS /* osf */ 174 { PIOCOPENMOBS, "PIOCOPENMOBS", "open mapped object" }, 175 #endif 176 #ifdef PIOCOPENPD /* solaris */ 177 { PIOCOPENPD, "PIOCOPENPD", "get page data file descriptor" }, 178 #endif 179 { PIOCPSINFO, "PIOCPSINFO", "get ps(1) information" }, 180 { PIOCRESET, "PIOCRESET", "reset process flags" }, 181 { PIOCRFORK, "PIOCRFORK", "reset inherit-on-fork flag" }, 182 { PIOCRRLC, "PIOCRRLC", "reset run-on-last-close flag" }, 183 { PIOCRUN, "PIOCRUN", "make process runnable" }, 184 #ifdef PIOCSAVECCNTRS /* irix */ 185 { PIOCSAVECCNTRS, "PIOCSAVECCNTRS", "parent gets child cntrs" }, 186 #endif 187 { PIOCSENTRY, "PIOCSENTRY", "set traced syscall entry set" }, 188 { PIOCSET, "PIOCSET", "set process flags" }, 189 { PIOCSEXIT, "PIOCSEXIT", "set traced syscall exit set" }, 190 { PIOCSFAULT, "PIOCSFAULT", "set traced fault set" }, 191 { PIOCSFORK, "PIOCSFORK", "set inherit-on-fork flag" }, 192 { PIOCSFPREG, "PIOCSFPREG", "set floating point registers" }, 193 { PIOCSHOLD, "PIOCSHOLD", "set held signal set" }, 194 { PIOCSREG, "PIOCSREG", "set general registers" }, 195 { PIOCSRLC, "PIOCSRLC", "set run-on-last-close flag" }, 196 { PIOCSSIG, "PIOCSSIG", "set current signal" }, 197 { PIOCSTATUS, "PIOCSTATUS", "get process status" }, 198 { PIOCSTOP, "PIOCSTOP", "post stop request" }, 199 { PIOCSTRACE, "PIOCSTRACE", "set traced signal set" }, 200 { PIOCUNKILL, "PIOCUNKILL", "delete a signal" }, 201 #ifdef PIOCUSAGE /* solaris */ 202 { PIOCUSAGE, "PIOCUSAGE", "get resource usage" }, 203 #endif 204 { PIOCWSTOP, "PIOCWSTOP", "wait for process to stop" }, 205 206 #ifdef PIOCNTHR /* osf threads */ 207 { PIOCNTHR, "PIOCNTHR", "get thread count" }, 208 { PIOCRTINH, "PIOCRTINH", "reset inherit-on-thread-creation" }, 209 { PIOCSTINH, "PIOCSTINH", "set inherit-on-thread-creation" }, 210 { PIOCTLIST, "PIOCTLIST", "get thread ids" }, 211 { PIOCXPTH, "PIOCXPTH", "translate port to thread handle" }, 212 { PIOCTRUN, "PIOCTRUN", "make thread runnable" }, 213 { PIOCTSTATUS, "PIOCTSTATUS", "get thread status" }, 214 { PIOCTSTOP, "PIOCTSTOP", "stop a thread" }, 215 /* ... TGTRACE TSTRACE TSSIG TKILL TUNKILL TCFAULT TGFAULT TSFAULT 216 TGFPREG TSFPREG TGREG TSREG TACTION TTERM TABRUN TGENTRY TSENTRY 217 TGEXIT TSEXIT TSHOLD ... thread functions */ 218 #endif /* osf threads */ 219 { -1, NULL, NULL } 220 }; 221 222 int 223 ioctl_with_trace (int fd, long opcode, void *ptr, char *file, int line) 224 { 225 int i = 0; 226 int ret; 227 int arg1; 228 229 prepare_to_trace (); 230 231 if (procfs_trace) 232 { 233 for (i = 0; ioctl_table[i].name != NULL; i++) 234 if (ioctl_table[i].value == opcode) 235 break; 236 237 if (info_verbose) 238 fprintf (procfs_file ? procfs_file : stdout, 239 "%s:%d -- ", file, line); 240 switch (opcode) { 241 case PIOCSET: 242 arg1 = ptr ? *(long *) ptr : 0; 243 fprintf (procfs_file ? procfs_file : stdout, 244 "ioctl (PIOCSET, %s) %s\n", 245 arg1 == PR_FORK ? "PR_FORK" : 246 arg1 == PR_RLC ? "PR_RLC" : 247 #ifdef PR_ASYNC 248 arg1 == PR_ASYNC ? "PR_ASYNC" : 249 #endif 250 "<unknown flag>", 251 info_verbose ? ioctl_table[i].desc : ""); 252 break; 253 case PIOCRESET: 254 arg1 = ptr ? *(long *) ptr : 0; 255 fprintf (procfs_file ? procfs_file : stdout, 256 "ioctl (PIOCRESET, %s) %s\n", 257 arg1 == PR_FORK ? "PR_FORK" : 258 arg1 == PR_RLC ? "PR_RLC" : 259 #ifdef PR_ASYNC 260 arg1 == PR_ASYNC ? "PR_ASYNC" : 261 #endif 262 "<unknown flag>", 263 info_verbose ? ioctl_table[i].desc : ""); 264 break; 265 case PIOCSTRACE: 266 fprintf (procfs_file ? procfs_file : stdout, 267 "ioctl (PIOCSTRACE) "); 268 proc_prettyfprint_signalset (procfs_file ? procfs_file : stdout, 269 (sigset_t *) ptr, 0); 270 break; 271 case PIOCSFAULT: 272 fprintf (procfs_file ? procfs_file : stdout, 273 "ioctl (%s) ", 274 opcode == PIOCSFAULT ? "PIOCSFAULT" : "PIOCGFAULT"); 275 proc_prettyfprint_faultset (procfs_file ? procfs_file : stdout, 276 (fltset_t *) ptr, 0); 277 break; 278 case PIOCSENTRY: 279 fprintf (procfs_file ? procfs_file : stdout, 280 "ioctl (%s) ", 281 opcode == PIOCSENTRY ? "PIOCSENTRY" : "PIOCGENTRY"); 282 proc_prettyfprint_syscalls (procfs_file ? procfs_file : stdout, 283 (sysset_t *) ptr, 0); 284 break; 285 case PIOCSEXIT: 286 fprintf (procfs_file ? procfs_file : stdout, 287 "ioctl (%s) ", 288 opcode == PIOCSEXIT ? "PIOCSEXIT" : "PIOCGEXIT"); 289 proc_prettyfprint_syscalls (procfs_file ? procfs_file : stdout, 290 (sysset_t *) ptr, 0); 291 break; 292 case PIOCSHOLD: 293 fprintf (procfs_file ? procfs_file : stdout, 294 "ioctl (%s) ", 295 opcode == PIOCSHOLD ? "PIOCSHOLD" : "PIOCGHOLD"); 296 proc_prettyfprint_signalset (procfs_file ? procfs_file : stdout, 297 (sigset_t *) ptr, 0); 298 break; 299 case PIOCSSIG: 300 fprintf (procfs_file ? procfs_file : stdout, 301 "ioctl (PIOCSSIG) "); 302 proc_prettyfprint_signal (procfs_file ? procfs_file : stdout, 303 ptr ? ((siginfo_t *) ptr)->si_signo : 0, 304 0); 305 fprintf (procfs_file ? procfs_file : stdout, "\n"); 306 break; 307 case PIOCRUN: 308 fprintf (procfs_file ? procfs_file : stdout, 309 "ioctl (PIOCRUN) "); 310 311 arg1 = ptr ? *(long *) ptr : 0; 312 if (arg1 & PRCSIG) 313 fprintf (procfs_file ? procfs_file : stdout, "clearSig "); 314 if (arg1 & PRCFAULT) 315 fprintf (procfs_file ? procfs_file : stdout, "clearFlt "); 316 if (arg1 & PRSTRACE) 317 fprintf (procfs_file ? procfs_file : stdout, "setTrace "); 318 if (arg1 & PRSHOLD) 319 fprintf (procfs_file ? procfs_file : stdout, "setHold "); 320 if (arg1 & PRSFAULT) 321 fprintf (procfs_file ? procfs_file : stdout, "setFlt "); 322 if (arg1 & PRSVADDR) 323 fprintf (procfs_file ? procfs_file : stdout, "setVaddr "); 324 if (arg1 & PRSTEP) 325 fprintf (procfs_file ? procfs_file : stdout, "step "); 326 if (arg1 & PRSABORT) 327 fprintf (procfs_file ? procfs_file : stdout, "syscallAbort "); 328 if (arg1 & PRSTOP) 329 fprintf (procfs_file ? procfs_file : stdout, "stopReq "); 330 331 fprintf (procfs_file ? procfs_file : stdout, "\n"); 332 break; 333 case PIOCKILL: 334 fprintf (procfs_file ? procfs_file : stdout, 335 "ioctl (PIOCKILL) "); 336 proc_prettyfprint_signal (procfs_file ? procfs_file : stdout, 337 ptr ? *(long *) ptr : 0, 0); 338 fprintf (procfs_file ? procfs_file : stdout, "\n"); 339 break; 340 #ifdef PIOCSSPCACT 341 case PIOCSSPCACT: 342 fprintf (procfs_file ? procfs_file : stdout, 343 "ioctl (PIOCSSPCACT) "); 344 arg1 = ptr ? *(long *) ptr : 0; 345 if (arg1 & PRFS_STOPFORK) 346 fprintf (procfs_file ? procfs_file : stdout, "stopFork "); 347 if (arg1 & PRFS_STOPEXEC) 348 fprintf (procfs_file ? procfs_file : stdout, "stopExec "); 349 if (arg1 & PRFS_STOPTERM) 350 fprintf (procfs_file ? procfs_file : stdout, "stopTerm "); 351 if (arg1 & PRFS_STOPTCR) 352 fprintf (procfs_file ? procfs_file : stdout, "stopThreadCreate "); 353 if (arg1 & PRFS_STOPTTERM) 354 fprintf (procfs_file ? procfs_file : stdout, "stopThreadTerm "); 355 if (arg1 & PRFS_KOLC) 356 fprintf (procfs_file ? procfs_file : stdout, "killOnLastClose "); 357 fprintf (procfs_file ? procfs_file : stdout, "\n"); 358 break; 359 #endif /* PIOCSSPCACT */ 360 default: 361 if (ioctl_table[i].name) 362 fprintf (procfs_file ? procfs_file : stdout, 363 "ioctl (%s) %s\n", 364 ioctl_table[i].name, 365 info_verbose ? ioctl_table[i].desc : ""); 366 else 367 fprintf (procfs_file ? procfs_file : stdout, 368 "ioctl (<unknown %ld (0x%lx)) \n", opcode, opcode); 369 break; 370 } 371 if (procfs_file) 372 fflush (procfs_file); 373 } 374 errno = 0; 375 ret = ioctl (fd, opcode, ptr); 376 if (procfs_trace && ret < 0) 377 { 378 fprintf (procfs_file ? procfs_file : stdout, 379 "[ioctl (%s) FAILED! (%s)]\n", 380 ioctl_table[i].name != NULL ? 381 ioctl_table[i].name : "<unknown>", 382 safe_strerror (errno)); 383 if (procfs_file) 384 fflush (procfs_file); 385 } 386 387 return ret; 388 } 389 390 #else /* NEW_PROC_API */ 391 392 static struct trans rw_table[] = { 393 #ifdef PCAGENT /* solaris */ 394 { PCAGENT, "PCAGENT", "create agent lwp with regs from argument" }, 395 #endif 396 { PCCFAULT, "PCCFAULT", "clear current fault" }, 397 #ifdef PCCSIG /* solaris */ 398 { PCCSIG, "PCCSIG", "clear current signal" }, 399 #endif 400 #ifdef PCDSTOP /* solaris */ 401 { PCDSTOP, "PCDSTOP", "post stop request" }, 402 #endif 403 { PCKILL, "PCKILL", "post a signal" }, 404 #ifdef PCNICE /* solaris */ 405 { PCNICE, "PCNICE", "set nice priority" }, 406 #endif 407 #ifdef PCREAD /* solaris */ 408 { PCREAD, "PCREAD", "read from the address space" }, 409 { PCWRITE, "PCWRITE", "write to the address space" }, 410 #endif 411 { PCRUN, "PCRUN", "make process/lwp runnable" }, 412 #ifdef PCSASRS /* solaris 2.7 only */ 413 { PCSASRS, "PCSASRS", "set ancillary state registers" }, 414 #endif 415 #ifdef PCSCRED /* solaris */ 416 { PCSCRED, "PCSCRED", "set process credentials" }, 417 #endif 418 { PCSENTRY, "PCSENTRY", "set traced syscall entry set" }, 419 { PCSET, "PCSET", "set modes" }, 420 { PCSEXIT, "PCSEXIT", "set traced syscall exit set" }, 421 { PCSFAULT, "PCSFAULT", "set traced fault set" }, 422 { PCSFPREG, "PCSFPREG", "set floating point registers" }, 423 #ifdef PCSHOLD /* solaris */ 424 { PCSHOLD, "PCSHOLD", "set signal mask" }, 425 #endif 426 { PCSREG, "PCSREG", "set general registers" }, 427 { PCSSIG, "PCSSIG", "set current signal" }, 428 { PCSTOP, "PCSTOP", "post stop request and wait" }, 429 { PCSTRACE, "PCSTRACE", "set traced signal set" }, 430 #ifdef PCSVADDR /* solaris */ 431 { PCSVADDR, "PCSVADDR", "set pc virtual address" }, 432 #endif 433 #ifdef PCSXREG /* solaris sparc only */ 434 { PCSXREG, "PCSXREG", "set extra registers" }, 435 #endif 436 #ifdef PCTWSTOP /* solaris */ 437 { PCTWSTOP, "PCTWSTOP", "wait for stop, with timeout arg" }, 438 #endif 439 #ifdef PCUNKILL /* solaris */ 440 { PCUNKILL, "PCUNKILL", "delete a pending signal" }, 441 #endif 442 #ifdef PCUNSET /* solaris */ 443 { PCUNSET, "PCUNSET", "unset modes" }, 444 #endif 445 #ifdef PCWATCH /* solaris */ 446 { PCWATCH, "PCWATCH", "set/unset watched memory area" }, 447 #endif 448 { PCWSTOP, "PCWSTOP", "wait for process/lwp to stop, no timeout" }, 449 { 0, NULL, NULL } 450 }; 451 452 static off_t lseek_offset; 453 454 int 455 write_with_trace (int fd, void *varg, size_t len, char *file, int line) 456 { 457 int i = ARRAY_SIZE (rw_table) - 1; 458 int ret; 459 procfs_ctl_t *arg = (procfs_ctl_t *) varg; 460 461 prepare_to_trace (); 462 if (procfs_trace) 463 { 464 procfs_ctl_t opcode = arg[0]; 465 for (i = 0; rw_table[i].name != NULL; i++) 466 if (rw_table[i].value == opcode) 467 break; 468 469 if (info_verbose) 470 fprintf (procfs_file ? procfs_file : stdout, 471 "%s:%d -- ", file, line); 472 switch (opcode) { 473 case PCSET: 474 fprintf (procfs_file ? procfs_file : stdout, 475 "write (PCSET, %s) %s\n", 476 arg[1] == PR_FORK ? "PR_FORK" : 477 arg[1] == PR_RLC ? "PR_RLC" : 478 #ifdef PR_ASYNC 479 arg[1] == PR_ASYNC ? "PR_ASYNC" : 480 #endif 481 "<unknown flag>", 482 info_verbose ? rw_table[i].desc : ""); 483 break; 484 #ifdef PCUNSET 485 case PCUNSET: 486 #endif 487 #ifdef PCRESET 488 #if PCRESET != PCUNSET 489 case PCRESET: 490 #endif 491 #endif 492 fprintf (procfs_file ? procfs_file : stdout, 493 "write (PCRESET, %s) %s\n", 494 arg[1] == PR_FORK ? "PR_FORK" : 495 arg[1] == PR_RLC ? "PR_RLC" : 496 #ifdef PR_ASYNC 497 arg[1] == PR_ASYNC ? "PR_ASYNC" : 498 #endif 499 "<unknown flag>", 500 info_verbose ? rw_table[i].desc : ""); 501 break; 502 case PCSTRACE: 503 fprintf (procfs_file ? procfs_file : stdout, 504 "write (PCSTRACE) "); 505 proc_prettyfprint_signalset (procfs_file ? procfs_file : stdout, 506 (sigset_t *) &arg[1], 0); 507 break; 508 case PCSFAULT: 509 fprintf (procfs_file ? procfs_file : stdout, 510 "write (PCSFAULT) "); 511 proc_prettyfprint_faultset (procfs_file ? procfs_file : stdout, 512 (fltset_t *) &arg[1], 0); 513 break; 514 case PCSENTRY: 515 fprintf (procfs_file ? procfs_file : stdout, 516 "write (PCSENTRY) "); 517 proc_prettyfprint_syscalls (procfs_file ? procfs_file : stdout, 518 (sysset_t *) &arg[1], 0); 519 break; 520 case PCSEXIT: 521 fprintf (procfs_file ? procfs_file : stdout, 522 "write (PCSEXIT) "); 523 proc_prettyfprint_syscalls (procfs_file ? procfs_file : stdout, 524 (sysset_t *) &arg[1], 0); 525 break; 526 #ifdef PCSHOLD 527 case PCSHOLD: 528 fprintf (procfs_file ? procfs_file : stdout, 529 "write (PCSHOLD) "); 530 proc_prettyfprint_signalset (procfs_file ? procfs_file : stdout, 531 (sigset_t *) &arg[1], 0); 532 break; 533 #endif 534 case PCSSIG: 535 fprintf (procfs_file ? procfs_file : stdout, 536 "write (PCSSIG) "); 537 proc_prettyfprint_signal (procfs_file ? procfs_file : stdout, 538 arg[1] ? ((siginfo_t *) &arg[1])->si_signo 539 : 0, 540 0); 541 fprintf (procfs_file ? procfs_file : stdout, "\n"); 542 break; 543 case PCRUN: 544 fprintf (procfs_file ? procfs_file : stdout, 545 "write (PCRUN) "); 546 if (arg[1] & PRCSIG) 547 fprintf (procfs_file ? procfs_file : stdout, "clearSig "); 548 if (arg[1] & PRCFAULT) 549 fprintf (procfs_file ? procfs_file : stdout, "clearFlt "); 550 if (arg[1] & PRSTEP) 551 fprintf (procfs_file ? procfs_file : stdout, "step "); 552 #ifdef PRSABORT 553 if (arg[1] & PRSABORT) 554 fprintf (procfs_file ? procfs_file : stdout, "syscallAbort "); 555 #endif 556 #ifdef PRSTOP 557 if (arg[1] & PRSTOP) 558 fprintf (procfs_file ? procfs_file : stdout, "stopReq "); 559 #endif 560 561 fprintf (procfs_file ? procfs_file : stdout, "\n"); 562 break; 563 case PCKILL: 564 fprintf (procfs_file ? procfs_file : stdout, 565 "write (PCKILL) "); 566 proc_prettyfprint_signal (procfs_file ? procfs_file : stdout, 567 arg[1], 0); 568 fprintf (procfs_file ? procfs_file : stdout, "\n"); 569 break; 570 default: 571 { 572 if (rw_table[i].name) 573 fprintf (procfs_file ? procfs_file : stdout, 574 "write (%s) %s\n", 575 rw_table[i].name, 576 info_verbose ? rw_table[i].desc : ""); 577 else 578 { 579 if (lseek_offset != -1) 580 fprintf (procfs_file ? procfs_file : stdout, 581 "write (<unknown>, %lud bytes at 0x%08lx) \n", 582 (unsigned long) len, (unsigned long) lseek_offset); 583 else 584 fprintf (procfs_file ? procfs_file : stdout, 585 "write (<unknown>, %lud bytes) \n", 586 (unsigned long) len); 587 } 588 break; 589 } 590 } 591 if (procfs_file) 592 fflush (procfs_file); 593 } 594 errno = 0; 595 ret = write (fd, (void *) arg, len); 596 if (procfs_trace && ret != len) 597 { 598 fprintf (procfs_file ? procfs_file : stdout, 599 "[write (%s) FAILED! (%s)]\n", 600 rw_table[i].name != NULL ? 601 rw_table[i].name : "<unknown>", 602 safe_strerror (errno)); 603 if (procfs_file) 604 fflush (procfs_file); 605 } 606 607 lseek_offset = -1; 608 return ret; 609 } 610 611 off_t 612 lseek_with_trace (int fd, off_t offset, int whence, char *file, int line) 613 { 614 off_t ret; 615 616 prepare_to_trace (); 617 errno = 0; 618 ret = lseek (fd, offset, whence); 619 lseek_offset = ret; 620 if (procfs_trace && (ret == -1 || errno != 0)) 621 { 622 fprintf (procfs_file ? procfs_file : stdout, 623 "[lseek (0x%08lx) FAILED! (%s)]\n", 624 (unsigned long) offset, safe_strerror (errno)); 625 if (procfs_file) 626 fflush (procfs_file); 627 } 628 629 return ret; 630 } 631 632 #endif /* NEW_PROC_API */ 633 634 int 635 open_with_trace (char *filename, int mode, char *file, int line) 636 { 637 int ret; 638 639 prepare_to_trace (); 640 errno = 0; 641 ret = open (filename, mode); 642 if (procfs_trace) 643 { 644 if (info_verbose) 645 fprintf (procfs_file ? procfs_file : stdout, 646 "%s:%d -- ", file, line); 647 648 if (errno) 649 { 650 fprintf (procfs_file ? procfs_file : stdout, 651 "[open FAILED! (%s) line %d]\\n", 652 safe_strerror (errno), line); 653 } 654 else 655 { 656 fprintf (procfs_file ? procfs_file : stdout, 657 "%d = open (%s, ", ret, filename); 658 if (mode == O_RDONLY) 659 fprintf (procfs_file ? procfs_file : stdout, "O_RDONLY) %d\n", 660 line); 661 else if (mode == O_WRONLY) 662 fprintf (procfs_file ? procfs_file : stdout, "O_WRONLY) %d\n", 663 line); 664 else if (mode == O_RDWR) 665 fprintf (procfs_file ? procfs_file : stdout, "O_RDWR) %d\n", 666 line); 667 } 668 if (procfs_file) 669 fflush (procfs_file); 670 } 671 672 return ret; 673 } 674 675 int 676 close_with_trace (int fd, char *file, int line) 677 { 678 int ret; 679 680 prepare_to_trace (); 681 errno = 0; 682 ret = close (fd); 683 if (procfs_trace) 684 { 685 if (info_verbose) 686 fprintf (procfs_file ? procfs_file : stdout, 687 "%s:%d -- ", file, line); 688 if (errno) 689 fprintf (procfs_file ? procfs_file : stdout, 690 "[close FAILED! (%s)]\n", safe_strerror (errno)); 691 else 692 fprintf (procfs_file ? procfs_file : stdout, 693 "%d = close (%d)\n", ret, fd); 694 if (procfs_file) 695 fflush (procfs_file); 696 } 697 698 return ret; 699 } 700 701 pid_t 702 wait_with_trace (int *wstat, char *file, int line) 703 { 704 int ret, lstat = 0; 705 706 prepare_to_trace (); 707 if (procfs_trace) 708 { 709 if (info_verbose) 710 fprintf (procfs_file ? procfs_file : stdout, 711 "%s:%d -- ", file, line); 712 fprintf (procfs_file ? procfs_file : stdout, 713 "wait (line %d) ", line); 714 if (procfs_file) 715 fflush (procfs_file); 716 } 717 errno = 0; 718 ret = wait (&lstat); 719 if (procfs_trace) 720 { 721 if (errno) 722 fprintf (procfs_file ? procfs_file : stdout, 723 "[wait FAILED! (%s)]\n", safe_strerror (errno)); 724 else 725 fprintf (procfs_file ? procfs_file : stdout, 726 "returned pid %d, status 0x%x\n", ret, lstat); 727 if (procfs_file) 728 fflush (procfs_file); 729 } 730 if (wstat) 731 *wstat = lstat; 732 733 return ret; 734 } 735 736 void 737 procfs_note (char *msg, char *file, int line) 738 { 739 prepare_to_trace (); 740 if (procfs_trace) 741 { 742 if (info_verbose) 743 fprintf (procfs_file ? procfs_file : stdout, 744 "%s:%d -- ", file, line); 745 fprintf (procfs_file ? procfs_file : stdout, "%s", msg); 746 if (procfs_file) 747 fflush (procfs_file); 748 } 749 } 750 751 void 752 proc_prettyfprint_status (long flags, int why, int what, int thread) 753 { 754 prepare_to_trace (); 755 if (procfs_trace) 756 { 757 if (thread) 758 fprintf (procfs_file ? procfs_file : stdout, 759 "Thread %d: ", thread); 760 761 proc_prettyfprint_flags (procfs_file ? procfs_file : stdout, 762 flags, 0); 763 764 if (flags & (PR_STOPPED | PR_ISTOP)) 765 proc_prettyfprint_why (procfs_file ? procfs_file : stdout, 766 why, what, 0); 767 if (procfs_file) 768 fflush (procfs_file); 769 } 770 } 771 772 773 /* Provide a prototype to silence -Wmissing-prototypes. */ 774 extern void _initialize_proc_api (void); 775 776 void 777 _initialize_proc_api (void) 778 { 779 struct cmd_list_element *c; 780 781 add_setshow_boolean_cmd ("procfs-trace", no_class, &procfs_trace, _("\ 782 Set tracing for /proc api calls."), _("\ 783 Show tracing for /proc api calls."), NULL, 784 set_procfs_trace_cmd, 785 NULL, /* FIXME: i18n: */ 786 &setlist, &showlist); 787 788 add_setshow_filename_cmd ("procfs-file", no_class, &procfs_filename, _("\ 789 Set filename for /proc tracefile."), _("\ 790 Show filename for /proc tracefile."), NULL, 791 set_procfs_file_cmd, 792 NULL, /* FIXME: i18n: */ 793 &setlist, &showlist); 794 } 795