| 1 | /* Machine independent support for SVR4 /proc (process file system) for GDB. |
| 2 | |
| 3 | Copyright (C) 1999-2015 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 | } |