| 1 | /* Linux-specific functions to retrieve OS data. |
| 2 | |
| 3 | Copyright (C) 2009-2018 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "common-defs.h" |
| 21 | #include "linux-osdata.h" |
| 22 | |
| 23 | #include <sys/types.h> |
| 24 | #include <sys/sysinfo.h> |
| 25 | #include <ctype.h> |
| 26 | #include <utmp.h> |
| 27 | #include <time.h> |
| 28 | #include <unistd.h> |
| 29 | #include <pwd.h> |
| 30 | #include <grp.h> |
| 31 | #include <netdb.h> |
| 32 | #include <netinet/in.h> |
| 33 | #include <arpa/inet.h> |
| 34 | |
| 35 | #include "xml-utils.h" |
| 36 | #include "buffer.h" |
| 37 | #include <dirent.h> |
| 38 | #include <sys/stat.h> |
| 39 | #include "filestuff.h" |
| 40 | #include <algorithm> |
| 41 | |
| 42 | #define NAMELEN(dirent) strlen ((dirent)->d_name) |
| 43 | |
| 44 | /* Define PID_T to be a fixed size that is at least as large as pid_t, |
| 45 | so that reading pid values embedded in /proc works |
| 46 | consistently. */ |
| 47 | |
| 48 | typedef long long PID_T; |
| 49 | |
| 50 | /* Define TIME_T to be at least as large as time_t, so that reading |
| 51 | time values embedded in /proc works consistently. */ |
| 52 | |
| 53 | typedef long long TIME_T; |
| 54 | |
| 55 | #define MAX_PID_T_STRLEN (sizeof ("-9223372036854775808") - 1) |
| 56 | |
| 57 | /* Returns the CPU core that thread PTID is currently running on. */ |
| 58 | |
| 59 | /* Compute and return the processor core of a given thread. */ |
| 60 | |
| 61 | int |
| 62 | linux_common_core_of_thread (ptid_t ptid) |
| 63 | { |
| 64 | char filename[sizeof ("/proc//task//stat") + 2 * MAX_PID_T_STRLEN]; |
| 65 | char *content = NULL; |
| 66 | char *p; |
| 67 | char *ts = 0; |
| 68 | int content_read = 0; |
| 69 | int i; |
| 70 | int core; |
| 71 | |
| 72 | sprintf (filename, "/proc/%lld/task/%lld/stat", |
| 73 | (PID_T) ptid.pid (), (PID_T) ptid_get_lwp (ptid)); |
| 74 | gdb_file_up f = gdb_fopen_cloexec (filename, "r"); |
| 75 | if (!f) |
| 76 | return -1; |
| 77 | |
| 78 | for (;;) |
| 79 | { |
| 80 | int n; |
| 81 | content = (char *) xrealloc (content, content_read + 1024); |
| 82 | n = fread (content + content_read, 1, 1024, f.get ()); |
| 83 | content_read += n; |
| 84 | if (n < 1024) |
| 85 | { |
| 86 | content[content_read] = '\0'; |
| 87 | break; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /* ps command also relies on no trailing fields ever contain ')'. */ |
| 92 | p = strrchr (content, ')'); |
| 93 | if (p != NULL) |
| 94 | p++; |
| 95 | |
| 96 | /* If the first field after program name has index 0, then core number is |
| 97 | the field with index 36. There's no constant for that anywhere. */ |
| 98 | if (p != NULL) |
| 99 | p = strtok_r (p, " ", &ts); |
| 100 | for (i = 0; p != NULL && i != 36; ++i) |
| 101 | p = strtok_r (NULL, " ", &ts); |
| 102 | |
| 103 | if (p == NULL || sscanf (p, "%d", &core) == 0) |
| 104 | core = -1; |
| 105 | |
| 106 | xfree (content); |
| 107 | |
| 108 | return core; |
| 109 | } |
| 110 | |
| 111 | /* Finds the command-line of process PID and copies it into COMMAND. |
| 112 | At most MAXLEN characters are copied. If the command-line cannot |
| 113 | be found, PID is copied into command in text-form. */ |
| 114 | |
| 115 | static void |
| 116 | command_from_pid (char *command, int maxlen, PID_T pid) |
| 117 | { |
| 118 | char *stat_path = xstrprintf ("/proc/%lld/stat", pid); |
| 119 | gdb_file_up fp = gdb_fopen_cloexec (stat_path, "r"); |
| 120 | |
| 121 | command[0] = '\0'; |
| 122 | |
| 123 | if (fp) |
| 124 | { |
| 125 | /* sizeof (cmd) should be greater or equal to TASK_COMM_LEN (in |
| 126 | include/linux/sched.h in the Linux kernel sources) plus two |
| 127 | (for the brackets). */ |
| 128 | char cmd[18]; |
| 129 | PID_T stat_pid; |
| 130 | int items_read = fscanf (fp.get (), "%lld %17s", &stat_pid, cmd); |
| 131 | |
| 132 | if (items_read == 2 && pid == stat_pid) |
| 133 | { |
| 134 | cmd[strlen (cmd) - 1] = '\0'; /* Remove trailing parenthesis. */ |
| 135 | strncpy (command, cmd + 1, maxlen); /* Ignore leading parenthesis. */ |
| 136 | } |
| 137 | } |
| 138 | else |
| 139 | { |
| 140 | /* Return the PID if a /proc entry for the process cannot be found. */ |
| 141 | snprintf (command, maxlen, "%lld", pid); |
| 142 | } |
| 143 | |
| 144 | command[maxlen - 1] = '\0'; /* Ensure string is null-terminated. */ |
| 145 | |
| 146 | xfree (stat_path); |
| 147 | } |
| 148 | |
| 149 | /* Returns the command-line of the process with the given PID. The |
| 150 | returned string needs to be freed using xfree after use. */ |
| 151 | |
| 152 | static char * |
| 153 | commandline_from_pid (PID_T pid) |
| 154 | { |
| 155 | char *pathname = xstrprintf ("/proc/%lld/cmdline", pid); |
| 156 | char *commandline = NULL; |
| 157 | gdb_file_up f = gdb_fopen_cloexec (pathname, "r"); |
| 158 | |
| 159 | if (f) |
| 160 | { |
| 161 | size_t len = 0; |
| 162 | |
| 163 | while (!feof (f.get ())) |
| 164 | { |
| 165 | char buf[1024]; |
| 166 | size_t read_bytes = fread (buf, 1, sizeof (buf), f.get ()); |
| 167 | |
| 168 | if (read_bytes) |
| 169 | { |
| 170 | commandline = (char *) xrealloc (commandline, len + read_bytes + 1); |
| 171 | memcpy (commandline + len, buf, read_bytes); |
| 172 | len += read_bytes; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | if (commandline) |
| 177 | { |
| 178 | size_t i; |
| 179 | |
| 180 | /* Replace null characters with spaces. */ |
| 181 | for (i = 0; i < len; ++i) |
| 182 | if (commandline[i] == '\0') |
| 183 | commandline[i] = ' '; |
| 184 | |
| 185 | commandline[len] = '\0'; |
| 186 | } |
| 187 | else |
| 188 | { |
| 189 | /* Return the command in square brackets if the command-line |
| 190 | is empty. */ |
| 191 | commandline = (char *) xmalloc (32); |
| 192 | commandline[0] = '['; |
| 193 | command_from_pid (commandline + 1, 31, pid); |
| 194 | |
| 195 | len = strlen (commandline); |
| 196 | if (len < 31) |
| 197 | strcat (commandline, "]"); |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | xfree (pathname); |
| 202 | |
| 203 | return commandline; |
| 204 | } |
| 205 | |
| 206 | /* Finds the user name for the user UID and copies it into USER. At |
| 207 | most MAXLEN characters are copied. */ |
| 208 | |
| 209 | static void |
| 210 | user_from_uid (char *user, int maxlen, uid_t uid) |
| 211 | { |
| 212 | struct passwd *pwentry = getpwuid (uid); |
| 213 | |
| 214 | if (pwentry) |
| 215 | { |
| 216 | strncpy (user, pwentry->pw_name, maxlen); |
| 217 | /* Ensure that the user name is null-terminated. */ |
| 218 | user[maxlen - 1] = '\0'; |
| 219 | } |
| 220 | else |
| 221 | user[0] = '\0'; |
| 222 | } |
| 223 | |
| 224 | /* Finds the owner of process PID and returns the user id in OWNER. |
| 225 | Returns 0 if the owner was found, -1 otherwise. */ |
| 226 | |
| 227 | static int |
| 228 | get_process_owner (uid_t *owner, PID_T pid) |
| 229 | { |
| 230 | struct stat statbuf; |
| 231 | char procentry[sizeof ("/proc/") + MAX_PID_T_STRLEN]; |
| 232 | |
| 233 | sprintf (procentry, "/proc/%lld", pid); |
| 234 | |
| 235 | if (stat (procentry, &statbuf) == 0 && S_ISDIR (statbuf.st_mode)) |
| 236 | { |
| 237 | *owner = statbuf.st_uid; |
| 238 | return 0; |
| 239 | } |
| 240 | else |
| 241 | return -1; |
| 242 | } |
| 243 | |
| 244 | /* Find the CPU cores used by process PID and return them in CORES. |
| 245 | CORES points to an array of NUM_CORES elements. */ |
| 246 | |
| 247 | static int |
| 248 | get_cores_used_by_process (PID_T pid, int *cores, const int num_cores) |
| 249 | { |
| 250 | char taskdir[sizeof ("/proc/") + MAX_PID_T_STRLEN + sizeof ("/task") - 1]; |
| 251 | DIR *dir; |
| 252 | struct dirent *dp; |
| 253 | int task_count = 0; |
| 254 | |
| 255 | sprintf (taskdir, "/proc/%lld/task", pid); |
| 256 | dir = opendir (taskdir); |
| 257 | if (dir) |
| 258 | { |
| 259 | while ((dp = readdir (dir)) != NULL) |
| 260 | { |
| 261 | PID_T tid; |
| 262 | int core; |
| 263 | |
| 264 | if (!isdigit (dp->d_name[0]) |
| 265 | || NAMELEN (dp) > MAX_PID_T_STRLEN) |
| 266 | continue; |
| 267 | |
| 268 | sscanf (dp->d_name, "%lld", &tid); |
| 269 | core = linux_common_core_of_thread (ptid_t ((pid_t) pid, |
| 270 | (pid_t) tid, 0)); |
| 271 | |
| 272 | if (core >= 0 && core < num_cores) |
| 273 | { |
| 274 | ++cores[core]; |
| 275 | ++task_count; |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | closedir (dir); |
| 280 | } |
| 281 | |
| 282 | return task_count; |
| 283 | } |
| 284 | |
| 285 | static LONGEST |
| 286 | linux_xfer_osdata_processes (gdb_byte *readbuf, |
| 287 | ULONGEST offset, ULONGEST len) |
| 288 | { |
| 289 | /* We make the process list snapshot when the object starts to be read. */ |
| 290 | static const char *buf; |
| 291 | static LONGEST len_avail = -1; |
| 292 | static struct buffer buffer; |
| 293 | |
| 294 | if (offset == 0) |
| 295 | { |
| 296 | DIR *dirp; |
| 297 | |
| 298 | if (len_avail != -1 && len_avail != 0) |
| 299 | buffer_free (&buffer); |
| 300 | len_avail = 0; |
| 301 | buf = NULL; |
| 302 | buffer_init (&buffer); |
| 303 | buffer_grow_str (&buffer, "<osdata type=\"processes\">\n"); |
| 304 | |
| 305 | dirp = opendir ("/proc"); |
| 306 | if (dirp) |
| 307 | { |
| 308 | const int num_cores = sysconf (_SC_NPROCESSORS_ONLN); |
| 309 | struct dirent *dp; |
| 310 | |
| 311 | while ((dp = readdir (dirp)) != NULL) |
| 312 | { |
| 313 | PID_T pid; |
| 314 | uid_t owner; |
| 315 | char user[UT_NAMESIZE]; |
| 316 | char *command_line; |
| 317 | int *cores; |
| 318 | int task_count; |
| 319 | char *cores_str; |
| 320 | int i; |
| 321 | |
| 322 | if (!isdigit (dp->d_name[0]) |
| 323 | || NAMELEN (dp) > MAX_PID_T_STRLEN) |
| 324 | continue; |
| 325 | |
| 326 | sscanf (dp->d_name, "%lld", &pid); |
| 327 | command_line = commandline_from_pid (pid); |
| 328 | |
| 329 | if (get_process_owner (&owner, pid) == 0) |
| 330 | user_from_uid (user, sizeof (user), owner); |
| 331 | else |
| 332 | strcpy (user, "?"); |
| 333 | |
| 334 | /* Find CPU cores used by the process. */ |
| 335 | cores = XCNEWVEC (int, num_cores); |
| 336 | task_count = get_cores_used_by_process (pid, cores, num_cores); |
| 337 | cores_str = (char *) xcalloc (task_count, sizeof ("4294967295") + 1); |
| 338 | |
| 339 | for (i = 0; i < num_cores && task_count > 0; ++i) |
| 340 | if (cores[i]) |
| 341 | { |
| 342 | char core_str[sizeof ("4294967295")]; |
| 343 | |
| 344 | sprintf (core_str, "%d", i); |
| 345 | strcat (cores_str, core_str); |
| 346 | |
| 347 | task_count -= cores[i]; |
| 348 | if (task_count > 0) |
| 349 | strcat (cores_str, ","); |
| 350 | } |
| 351 | |
| 352 | xfree (cores); |
| 353 | |
| 354 | buffer_xml_printf ( |
| 355 | &buffer, |
| 356 | "<item>" |
| 357 | "<column name=\"pid\">%lld</column>" |
| 358 | "<column name=\"user\">%s</column>" |
| 359 | "<column name=\"command\">%s</column>" |
| 360 | "<column name=\"cores\">%s</column>" |
| 361 | "</item>", |
| 362 | pid, |
| 363 | user, |
| 364 | command_line ? command_line : "", |
| 365 | cores_str); |
| 366 | |
| 367 | xfree (command_line); |
| 368 | xfree (cores_str); |
| 369 | } |
| 370 | |
| 371 | closedir (dirp); |
| 372 | } |
| 373 | |
| 374 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 375 | buf = buffer_finish (&buffer); |
| 376 | len_avail = strlen (buf); |
| 377 | } |
| 378 | |
| 379 | if (offset >= len_avail) |
| 380 | { |
| 381 | /* Done. Get rid of the buffer. */ |
| 382 | buffer_free (&buffer); |
| 383 | buf = NULL; |
| 384 | len_avail = 0; |
| 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | if (len > len_avail - offset) |
| 389 | len = len_avail - offset; |
| 390 | memcpy (readbuf, buf + offset, len); |
| 391 | |
| 392 | return len; |
| 393 | } |
| 394 | |
| 395 | /* A simple PID/PGID pair. */ |
| 396 | |
| 397 | struct pid_pgid_entry |
| 398 | { |
| 399 | pid_pgid_entry (PID_T pid_, PID_T pgid_) |
| 400 | : pid (pid_), pgid (pgid_) |
| 401 | {} |
| 402 | |
| 403 | /* Return true if this pid is the leader of its process group. */ |
| 404 | |
| 405 | bool is_leader () const |
| 406 | { |
| 407 | return pid == pgid; |
| 408 | } |
| 409 | |
| 410 | bool operator< (const pid_pgid_entry &other) const |
| 411 | { |
| 412 | /* Sort by PGID. */ |
| 413 | if (this->pgid != other.pgid) |
| 414 | return this->pgid < other.pgid; |
| 415 | |
| 416 | /* Process group leaders always come first... */ |
| 417 | if (this->is_leader ()) |
| 418 | return true; |
| 419 | |
| 420 | if (other.is_leader ()) |
| 421 | return false; |
| 422 | |
| 423 | /* ...else sort by PID. */ |
| 424 | return this->pid < other.pid; |
| 425 | } |
| 426 | |
| 427 | PID_T pid, pgid; |
| 428 | }; |
| 429 | |
| 430 | /* Collect all process groups from /proc. */ |
| 431 | |
| 432 | static LONGEST |
| 433 | linux_xfer_osdata_processgroups (gdb_byte *readbuf, |
| 434 | ULONGEST offset, ULONGEST len) |
| 435 | { |
| 436 | /* We make the process list snapshot when the object starts to be read. */ |
| 437 | static const char *buf; |
| 438 | static LONGEST len_avail = -1; |
| 439 | static struct buffer buffer; |
| 440 | |
| 441 | if (offset == 0) |
| 442 | { |
| 443 | DIR *dirp; |
| 444 | |
| 445 | if (len_avail != -1 && len_avail != 0) |
| 446 | buffer_free (&buffer); |
| 447 | len_avail = 0; |
| 448 | buf = NULL; |
| 449 | buffer_init (&buffer); |
| 450 | buffer_grow_str (&buffer, "<osdata type=\"process groups\">\n"); |
| 451 | |
| 452 | dirp = opendir ("/proc"); |
| 453 | if (dirp) |
| 454 | { |
| 455 | std::vector<pid_pgid_entry> process_list; |
| 456 | struct dirent *dp; |
| 457 | |
| 458 | process_list.reserve (512); |
| 459 | |
| 460 | /* Build list consisting of PIDs followed by their |
| 461 | associated PGID. */ |
| 462 | while ((dp = readdir (dirp)) != NULL) |
| 463 | { |
| 464 | PID_T pid, pgid; |
| 465 | |
| 466 | if (!isdigit (dp->d_name[0]) |
| 467 | || NAMELEN (dp) > MAX_PID_T_STRLEN) |
| 468 | continue; |
| 469 | |
| 470 | sscanf (dp->d_name, "%lld", &pid); |
| 471 | pgid = getpgid (pid); |
| 472 | |
| 473 | if (pgid > 0) |
| 474 | process_list.emplace_back (pid, pgid); |
| 475 | } |
| 476 | |
| 477 | closedir (dirp); |
| 478 | |
| 479 | /* Sort the process list. */ |
| 480 | std::sort (process_list.begin (), process_list.end ()); |
| 481 | |
| 482 | for (const pid_pgid_entry &entry : process_list) |
| 483 | { |
| 484 | PID_T pid = entry.pid; |
| 485 | PID_T pgid = entry.pgid; |
| 486 | char leader_command[32]; |
| 487 | char *command_line; |
| 488 | |
| 489 | command_from_pid (leader_command, sizeof (leader_command), pgid); |
| 490 | command_line = commandline_from_pid (pid); |
| 491 | |
| 492 | buffer_xml_printf ( |
| 493 | &buffer, |
| 494 | "<item>" |
| 495 | "<column name=\"pgid\">%lld</column>" |
| 496 | "<column name=\"leader command\">%s</column>" |
| 497 | "<column name=\"pid\">%lld</column>" |
| 498 | "<column name=\"command line\">%s</column>" |
| 499 | "</item>", |
| 500 | pgid, |
| 501 | leader_command, |
| 502 | pid, |
| 503 | command_line ? command_line : ""); |
| 504 | |
| 505 | xfree (command_line); |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 510 | buf = buffer_finish (&buffer); |
| 511 | len_avail = strlen (buf); |
| 512 | } |
| 513 | |
| 514 | if (offset >= len_avail) |
| 515 | { |
| 516 | /* Done. Get rid of the buffer. */ |
| 517 | buffer_free (&buffer); |
| 518 | buf = NULL; |
| 519 | len_avail = 0; |
| 520 | return 0; |
| 521 | } |
| 522 | |
| 523 | if (len > len_avail - offset) |
| 524 | len = len_avail - offset; |
| 525 | memcpy (readbuf, buf + offset, len); |
| 526 | |
| 527 | return len; |
| 528 | } |
| 529 | |
| 530 | /* Collect all the threads in /proc by iterating through processes and |
| 531 | then tasks within each process. */ |
| 532 | |
| 533 | static LONGEST |
| 534 | linux_xfer_osdata_threads (gdb_byte *readbuf, |
| 535 | ULONGEST offset, ULONGEST len) |
| 536 | { |
| 537 | /* We make the process list snapshot when the object starts to be read. */ |
| 538 | static const char *buf; |
| 539 | static LONGEST len_avail = -1; |
| 540 | static struct buffer buffer; |
| 541 | |
| 542 | if (offset == 0) |
| 543 | { |
| 544 | DIR *dirp; |
| 545 | |
| 546 | if (len_avail != -1 && len_avail != 0) |
| 547 | buffer_free (&buffer); |
| 548 | len_avail = 0; |
| 549 | buf = NULL; |
| 550 | buffer_init (&buffer); |
| 551 | buffer_grow_str (&buffer, "<osdata type=\"threads\">\n"); |
| 552 | |
| 553 | dirp = opendir ("/proc"); |
| 554 | if (dirp) |
| 555 | { |
| 556 | struct dirent *dp; |
| 557 | |
| 558 | while ((dp = readdir (dirp)) != NULL) |
| 559 | { |
| 560 | struct stat statbuf; |
| 561 | char procentry[sizeof ("/proc/4294967295")]; |
| 562 | |
| 563 | if (!isdigit (dp->d_name[0]) |
| 564 | || NAMELEN (dp) > sizeof ("4294967295") - 1) |
| 565 | continue; |
| 566 | |
| 567 | xsnprintf (procentry, sizeof (procentry), "/proc/%s", |
| 568 | dp->d_name); |
| 569 | if (stat (procentry, &statbuf) == 0 |
| 570 | && S_ISDIR (statbuf.st_mode)) |
| 571 | { |
| 572 | DIR *dirp2; |
| 573 | char *pathname; |
| 574 | PID_T pid; |
| 575 | char command[32]; |
| 576 | |
| 577 | pathname = xstrprintf ("/proc/%s/task", dp->d_name); |
| 578 | |
| 579 | pid = atoi (dp->d_name); |
| 580 | command_from_pid (command, sizeof (command), pid); |
| 581 | |
| 582 | dirp2 = opendir (pathname); |
| 583 | |
| 584 | if (dirp2) |
| 585 | { |
| 586 | struct dirent *dp2; |
| 587 | |
| 588 | while ((dp2 = readdir (dirp2)) != NULL) |
| 589 | { |
| 590 | PID_T tid; |
| 591 | int core; |
| 592 | |
| 593 | if (!isdigit (dp2->d_name[0]) |
| 594 | || NAMELEN (dp2) > sizeof ("4294967295") - 1) |
| 595 | continue; |
| 596 | |
| 597 | tid = atoi (dp2->d_name); |
| 598 | core = linux_common_core_of_thread (ptid_t (pid, tid, 0)); |
| 599 | |
| 600 | buffer_xml_printf ( |
| 601 | &buffer, |
| 602 | "<item>" |
| 603 | "<column name=\"pid\">%lld</column>" |
| 604 | "<column name=\"command\">%s</column>" |
| 605 | "<column name=\"tid\">%lld</column>" |
| 606 | "<column name=\"core\">%d</column>" |
| 607 | "</item>", |
| 608 | pid, |
| 609 | command, |
| 610 | tid, |
| 611 | core); |
| 612 | } |
| 613 | |
| 614 | closedir (dirp2); |
| 615 | } |
| 616 | |
| 617 | xfree (pathname); |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | closedir (dirp); |
| 622 | } |
| 623 | |
| 624 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 625 | buf = buffer_finish (&buffer); |
| 626 | len_avail = strlen (buf); |
| 627 | } |
| 628 | |
| 629 | if (offset >= len_avail) |
| 630 | { |
| 631 | /* Done. Get rid of the buffer. */ |
| 632 | buffer_free (&buffer); |
| 633 | buf = NULL; |
| 634 | len_avail = 0; |
| 635 | return 0; |
| 636 | } |
| 637 | |
| 638 | if (len > len_avail - offset) |
| 639 | len = len_avail - offset; |
| 640 | memcpy (readbuf, buf + offset, len); |
| 641 | |
| 642 | return len; |
| 643 | } |
| 644 | |
| 645 | /* Collect data about the cpus/cores on the system */ |
| 646 | |
| 647 | static LONGEST |
| 648 | linux_xfer_osdata_cpus (gdb_byte *readbuf, |
| 649 | ULONGEST offset, ULONGEST len) |
| 650 | { |
| 651 | static const char *buf; |
| 652 | static LONGEST len_avail = -1; |
| 653 | static struct buffer buffer; |
| 654 | |
| 655 | if (offset == 0) |
| 656 | { |
| 657 | int first_item = 1; |
| 658 | |
| 659 | if (len_avail != -1 && len_avail != 0) |
| 660 | buffer_free (&buffer); |
| 661 | len_avail = 0; |
| 662 | buf = NULL; |
| 663 | buffer_init (&buffer); |
| 664 | buffer_grow_str (&buffer, "<osdata type=\"cpus\">\n"); |
| 665 | |
| 666 | gdb_file_up fp = gdb_fopen_cloexec ("/proc/cpuinfo", "r"); |
| 667 | if (fp != NULL) |
| 668 | { |
| 669 | char buf[8192]; |
| 670 | |
| 671 | do |
| 672 | { |
| 673 | if (fgets (buf, sizeof (buf), fp.get ())) |
| 674 | { |
| 675 | char *key, *value; |
| 676 | int i = 0; |
| 677 | |
| 678 | key = strtok (buf, ":"); |
| 679 | if (key == NULL) |
| 680 | continue; |
| 681 | |
| 682 | value = strtok (NULL, ":"); |
| 683 | if (value == NULL) |
| 684 | continue; |
| 685 | |
| 686 | while (key[i] != '\t' && key[i] != '\0') |
| 687 | i++; |
| 688 | |
| 689 | key[i] = '\0'; |
| 690 | |
| 691 | i = 0; |
| 692 | while (value[i] != '\t' && value[i] != '\0') |
| 693 | i++; |
| 694 | |
| 695 | value[i] = '\0'; |
| 696 | |
| 697 | if (strcmp (key, "processor") == 0) |
| 698 | { |
| 699 | if (first_item) |
| 700 | buffer_grow_str (&buffer, "<item>"); |
| 701 | else |
| 702 | buffer_grow_str (&buffer, "</item><item>"); |
| 703 | |
| 704 | first_item = 0; |
| 705 | } |
| 706 | |
| 707 | buffer_xml_printf (&buffer, |
| 708 | "<column name=\"%s\">%s</column>", |
| 709 | key, |
| 710 | value); |
| 711 | } |
| 712 | } |
| 713 | while (!feof (fp.get ())); |
| 714 | |
| 715 | if (first_item == 0) |
| 716 | buffer_grow_str (&buffer, "</item>"); |
| 717 | } |
| 718 | |
| 719 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 720 | buf = buffer_finish (&buffer); |
| 721 | len_avail = strlen (buf); |
| 722 | } |
| 723 | |
| 724 | if (offset >= len_avail) |
| 725 | { |
| 726 | /* Done. Get rid of the buffer. */ |
| 727 | buffer_free (&buffer); |
| 728 | buf = NULL; |
| 729 | len_avail = 0; |
| 730 | return 0; |
| 731 | } |
| 732 | |
| 733 | if (len > len_avail - offset) |
| 734 | len = len_avail - offset; |
| 735 | memcpy (readbuf, buf + offset, len); |
| 736 | |
| 737 | return len; |
| 738 | } |
| 739 | |
| 740 | /* Collect all the open file descriptors found in /proc and put the details |
| 741 | found about them into READBUF. */ |
| 742 | |
| 743 | static LONGEST |
| 744 | linux_xfer_osdata_fds (gdb_byte *readbuf, |
| 745 | ULONGEST offset, ULONGEST len) |
| 746 | { |
| 747 | /* We make the process list snapshot when the object starts to be read. */ |
| 748 | static const char *buf; |
| 749 | static LONGEST len_avail = -1; |
| 750 | static struct buffer buffer; |
| 751 | |
| 752 | if (offset == 0) |
| 753 | { |
| 754 | DIR *dirp; |
| 755 | |
| 756 | if (len_avail != -1 && len_avail != 0) |
| 757 | buffer_free (&buffer); |
| 758 | len_avail = 0; |
| 759 | buf = NULL; |
| 760 | buffer_init (&buffer); |
| 761 | buffer_grow_str (&buffer, "<osdata type=\"files\">\n"); |
| 762 | |
| 763 | dirp = opendir ("/proc"); |
| 764 | if (dirp) |
| 765 | { |
| 766 | struct dirent *dp; |
| 767 | |
| 768 | while ((dp = readdir (dirp)) != NULL) |
| 769 | { |
| 770 | struct stat statbuf; |
| 771 | char procentry[sizeof ("/proc/4294967295")]; |
| 772 | |
| 773 | if (!isdigit (dp->d_name[0]) |
| 774 | || NAMELEN (dp) > sizeof ("4294967295") - 1) |
| 775 | continue; |
| 776 | |
| 777 | xsnprintf (procentry, sizeof (procentry), "/proc/%s", |
| 778 | dp->d_name); |
| 779 | if (stat (procentry, &statbuf) == 0 |
| 780 | && S_ISDIR (statbuf.st_mode)) |
| 781 | { |
| 782 | char *pathname; |
| 783 | DIR *dirp2; |
| 784 | PID_T pid; |
| 785 | char command[32]; |
| 786 | |
| 787 | pid = atoi (dp->d_name); |
| 788 | command_from_pid (command, sizeof (command), pid); |
| 789 | |
| 790 | pathname = xstrprintf ("/proc/%s/fd", dp->d_name); |
| 791 | dirp2 = opendir (pathname); |
| 792 | |
| 793 | if (dirp2) |
| 794 | { |
| 795 | struct dirent *dp2; |
| 796 | |
| 797 | while ((dp2 = readdir (dirp2)) != NULL) |
| 798 | { |
| 799 | char *fdname; |
| 800 | char buf[1000]; |
| 801 | ssize_t rslt; |
| 802 | |
| 803 | if (!isdigit (dp2->d_name[0])) |
| 804 | continue; |
| 805 | |
| 806 | fdname = xstrprintf ("%s/%s", pathname, dp2->d_name); |
| 807 | rslt = readlink (fdname, buf, sizeof (buf) - 1); |
| 808 | if (rslt >= 0) |
| 809 | buf[rslt] = '\0'; |
| 810 | |
| 811 | buffer_xml_printf ( |
| 812 | &buffer, |
| 813 | "<item>" |
| 814 | "<column name=\"pid\">%s</column>" |
| 815 | "<column name=\"command\">%s</column>" |
| 816 | "<column name=\"file descriptor\">%s</column>" |
| 817 | "<column name=\"name\">%s</column>" |
| 818 | "</item>", |
| 819 | dp->d_name, |
| 820 | command, |
| 821 | dp2->d_name, |
| 822 | (rslt >= 0 ? buf : dp2->d_name)); |
| 823 | } |
| 824 | |
| 825 | closedir (dirp2); |
| 826 | } |
| 827 | |
| 828 | xfree (pathname); |
| 829 | } |
| 830 | } |
| 831 | |
| 832 | closedir (dirp); |
| 833 | } |
| 834 | |
| 835 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 836 | buf = buffer_finish (&buffer); |
| 837 | len_avail = strlen (buf); |
| 838 | } |
| 839 | |
| 840 | if (offset >= len_avail) |
| 841 | { |
| 842 | /* Done. Get rid of the buffer. */ |
| 843 | buffer_free (&buffer); |
| 844 | buf = NULL; |
| 845 | len_avail = 0; |
| 846 | return 0; |
| 847 | } |
| 848 | |
| 849 | if (len > len_avail - offset) |
| 850 | len = len_avail - offset; |
| 851 | memcpy (readbuf, buf + offset, len); |
| 852 | |
| 853 | return len; |
| 854 | } |
| 855 | |
| 856 | /* Returns the socket state STATE in textual form. */ |
| 857 | |
| 858 | static const char * |
| 859 | format_socket_state (unsigned char state) |
| 860 | { |
| 861 | /* Copied from include/net/tcp_states.h in the Linux kernel sources. */ |
| 862 | enum { |
| 863 | TCP_ESTABLISHED = 1, |
| 864 | TCP_SYN_SENT, |
| 865 | TCP_SYN_RECV, |
| 866 | TCP_FIN_WAIT1, |
| 867 | TCP_FIN_WAIT2, |
| 868 | TCP_TIME_WAIT, |
| 869 | TCP_CLOSE, |
| 870 | TCP_CLOSE_WAIT, |
| 871 | TCP_LAST_ACK, |
| 872 | TCP_LISTEN, |
| 873 | TCP_CLOSING |
| 874 | }; |
| 875 | |
| 876 | switch (state) |
| 877 | { |
| 878 | case TCP_ESTABLISHED: |
| 879 | return "ESTABLISHED"; |
| 880 | case TCP_SYN_SENT: |
| 881 | return "SYN_SENT"; |
| 882 | case TCP_SYN_RECV: |
| 883 | return "SYN_RECV"; |
| 884 | case TCP_FIN_WAIT1: |
| 885 | return "FIN_WAIT1"; |
| 886 | case TCP_FIN_WAIT2: |
| 887 | return "FIN_WAIT2"; |
| 888 | case TCP_TIME_WAIT: |
| 889 | return "TIME_WAIT"; |
| 890 | case TCP_CLOSE: |
| 891 | return "CLOSE"; |
| 892 | case TCP_CLOSE_WAIT: |
| 893 | return "CLOSE_WAIT"; |
| 894 | case TCP_LAST_ACK: |
| 895 | return "LAST_ACK"; |
| 896 | case TCP_LISTEN: |
| 897 | return "LISTEN"; |
| 898 | case TCP_CLOSING: |
| 899 | return "CLOSING"; |
| 900 | default: |
| 901 | return "(unknown)"; |
| 902 | } |
| 903 | } |
| 904 | |
| 905 | union socket_addr |
| 906 | { |
| 907 | struct sockaddr sa; |
| 908 | struct sockaddr_in sin; |
| 909 | struct sockaddr_in6 sin6; |
| 910 | }; |
| 911 | |
| 912 | /* Auxiliary function used by linux_xfer_osdata_isocket. Formats |
| 913 | information for all open internet sockets of type FAMILY on the |
| 914 | system into BUFFER. If TCP is set, only TCP sockets are processed, |
| 915 | otherwise only UDP sockets are processed. */ |
| 916 | |
| 917 | static void |
| 918 | print_sockets (unsigned short family, int tcp, struct buffer *buffer) |
| 919 | { |
| 920 | const char *proc_file; |
| 921 | |
| 922 | if (family == AF_INET) |
| 923 | proc_file = tcp ? "/proc/net/tcp" : "/proc/net/udp"; |
| 924 | else if (family == AF_INET6) |
| 925 | proc_file = tcp ? "/proc/net/tcp6" : "/proc/net/udp6"; |
| 926 | else |
| 927 | return; |
| 928 | |
| 929 | gdb_file_up fp = gdb_fopen_cloexec (proc_file, "r"); |
| 930 | if (fp) |
| 931 | { |
| 932 | char buf[8192]; |
| 933 | |
| 934 | do |
| 935 | { |
| 936 | if (fgets (buf, sizeof (buf), fp.get ())) |
| 937 | { |
| 938 | uid_t uid; |
| 939 | unsigned int local_port, remote_port, state; |
| 940 | char local_address[NI_MAXHOST], remote_address[NI_MAXHOST]; |
| 941 | int result; |
| 942 | |
| 943 | #if NI_MAXHOST <= 32 |
| 944 | #error "local_address and remote_address buffers too small" |
| 945 | #endif |
| 946 | |
| 947 | result = sscanf (buf, |
| 948 | "%*d: %32[0-9A-F]:%X %32[0-9A-F]:%X %X %*X:%*X %*X:%*X %*X %d %*d %*u %*s\n", |
| 949 | local_address, &local_port, |
| 950 | remote_address, &remote_port, |
| 951 | &state, |
| 952 | &uid); |
| 953 | |
| 954 | if (result == 6) |
| 955 | { |
| 956 | union socket_addr locaddr, remaddr; |
| 957 | size_t addr_size; |
| 958 | char user[UT_NAMESIZE]; |
| 959 | char local_service[NI_MAXSERV], remote_service[NI_MAXSERV]; |
| 960 | |
| 961 | if (family == AF_INET) |
| 962 | { |
| 963 | sscanf (local_address, "%X", |
| 964 | &locaddr.sin.sin_addr.s_addr); |
| 965 | sscanf (remote_address, "%X", |
| 966 | &remaddr.sin.sin_addr.s_addr); |
| 967 | |
| 968 | locaddr.sin.sin_port = htons (local_port); |
| 969 | remaddr.sin.sin_port = htons (remote_port); |
| 970 | |
| 971 | addr_size = sizeof (struct sockaddr_in); |
| 972 | } |
| 973 | else |
| 974 | { |
| 975 | sscanf (local_address, "%8X%8X%8X%8X", |
| 976 | locaddr.sin6.sin6_addr.s6_addr32, |
| 977 | locaddr.sin6.sin6_addr.s6_addr32 + 1, |
| 978 | locaddr.sin6.sin6_addr.s6_addr32 + 2, |
| 979 | locaddr.sin6.sin6_addr.s6_addr32 + 3); |
| 980 | sscanf (remote_address, "%8X%8X%8X%8X", |
| 981 | remaddr.sin6.sin6_addr.s6_addr32, |
| 982 | remaddr.sin6.sin6_addr.s6_addr32 + 1, |
| 983 | remaddr.sin6.sin6_addr.s6_addr32 + 2, |
| 984 | remaddr.sin6.sin6_addr.s6_addr32 + 3); |
| 985 | |
| 986 | locaddr.sin6.sin6_port = htons (local_port); |
| 987 | remaddr.sin6.sin6_port = htons (remote_port); |
| 988 | |
| 989 | locaddr.sin6.sin6_flowinfo = 0; |
| 990 | remaddr.sin6.sin6_flowinfo = 0; |
| 991 | locaddr.sin6.sin6_scope_id = 0; |
| 992 | remaddr.sin6.sin6_scope_id = 0; |
| 993 | |
| 994 | addr_size = sizeof (struct sockaddr_in6); |
| 995 | } |
| 996 | |
| 997 | locaddr.sa.sa_family = remaddr.sa.sa_family = family; |
| 998 | |
| 999 | result = getnameinfo (&locaddr.sa, addr_size, |
| 1000 | local_address, sizeof (local_address), |
| 1001 | local_service, sizeof (local_service), |
| 1002 | NI_NUMERICHOST | NI_NUMERICSERV |
| 1003 | | (tcp ? 0 : NI_DGRAM)); |
| 1004 | if (result) |
| 1005 | continue; |
| 1006 | |
| 1007 | result = getnameinfo (&remaddr.sa, addr_size, |
| 1008 | remote_address, |
| 1009 | sizeof (remote_address), |
| 1010 | remote_service, |
| 1011 | sizeof (remote_service), |
| 1012 | NI_NUMERICHOST | NI_NUMERICSERV |
| 1013 | | (tcp ? 0 : NI_DGRAM)); |
| 1014 | if (result) |
| 1015 | continue; |
| 1016 | |
| 1017 | user_from_uid (user, sizeof (user), uid); |
| 1018 | |
| 1019 | buffer_xml_printf ( |
| 1020 | buffer, |
| 1021 | "<item>" |
| 1022 | "<column name=\"local address\">%s</column>" |
| 1023 | "<column name=\"local port\">%s</column>" |
| 1024 | "<column name=\"remote address\">%s</column>" |
| 1025 | "<column name=\"remote port\">%s</column>" |
| 1026 | "<column name=\"state\">%s</column>" |
| 1027 | "<column name=\"user\">%s</column>" |
| 1028 | "<column name=\"family\">%s</column>" |
| 1029 | "<column name=\"protocol\">%s</column>" |
| 1030 | "</item>", |
| 1031 | local_address, |
| 1032 | local_service, |
| 1033 | remote_address, |
| 1034 | remote_service, |
| 1035 | format_socket_state (state), |
| 1036 | user, |
| 1037 | (family == AF_INET) ? "INET" : "INET6", |
| 1038 | tcp ? "STREAM" : "DGRAM"); |
| 1039 | } |
| 1040 | } |
| 1041 | } |
| 1042 | while (!feof (fp.get ())); |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | /* Collect data about internet sockets and write it into READBUF. */ |
| 1047 | |
| 1048 | static LONGEST |
| 1049 | linux_xfer_osdata_isockets (gdb_byte *readbuf, |
| 1050 | ULONGEST offset, ULONGEST len) |
| 1051 | { |
| 1052 | static const char *buf; |
| 1053 | static LONGEST len_avail = -1; |
| 1054 | static struct buffer buffer; |
| 1055 | |
| 1056 | if (offset == 0) |
| 1057 | { |
| 1058 | if (len_avail != -1 && len_avail != 0) |
| 1059 | buffer_free (&buffer); |
| 1060 | len_avail = 0; |
| 1061 | buf = NULL; |
| 1062 | buffer_init (&buffer); |
| 1063 | buffer_grow_str (&buffer, "<osdata type=\"I sockets\">\n"); |
| 1064 | |
| 1065 | print_sockets (AF_INET, 1, &buffer); |
| 1066 | print_sockets (AF_INET, 0, &buffer); |
| 1067 | print_sockets (AF_INET6, 1, &buffer); |
| 1068 | print_sockets (AF_INET6, 0, &buffer); |
| 1069 | |
| 1070 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 1071 | buf = buffer_finish (&buffer); |
| 1072 | len_avail = strlen (buf); |
| 1073 | } |
| 1074 | |
| 1075 | if (offset >= len_avail) |
| 1076 | { |
| 1077 | /* Done. Get rid of the buffer. */ |
| 1078 | buffer_free (&buffer); |
| 1079 | buf = NULL; |
| 1080 | len_avail = 0; |
| 1081 | return 0; |
| 1082 | } |
| 1083 | |
| 1084 | if (len > len_avail - offset) |
| 1085 | len = len_avail - offset; |
| 1086 | memcpy (readbuf, buf + offset, len); |
| 1087 | |
| 1088 | return len; |
| 1089 | } |
| 1090 | |
| 1091 | /* Converts the time SECONDS into textual form and copies it into a |
| 1092 | buffer TIME, with at most MAXLEN characters copied. */ |
| 1093 | |
| 1094 | static void |
| 1095 | time_from_time_t (char *time, int maxlen, TIME_T seconds) |
| 1096 | { |
| 1097 | if (!seconds) |
| 1098 | time[0] = '\0'; |
| 1099 | else |
| 1100 | { |
| 1101 | time_t t = (time_t) seconds; |
| 1102 | |
| 1103 | strncpy (time, ctime (&t), maxlen); |
| 1104 | time[maxlen - 1] = '\0'; |
| 1105 | } |
| 1106 | } |
| 1107 | |
| 1108 | /* Finds the group name for the group GID and copies it into GROUP. |
| 1109 | At most MAXLEN characters are copied. */ |
| 1110 | |
| 1111 | static void |
| 1112 | group_from_gid (char *group, int maxlen, gid_t gid) |
| 1113 | { |
| 1114 | struct group *grentry = getgrgid (gid); |
| 1115 | |
| 1116 | if (grentry) |
| 1117 | { |
| 1118 | strncpy (group, grentry->gr_name, maxlen); |
| 1119 | /* Ensure that the group name is null-terminated. */ |
| 1120 | group[maxlen - 1] = '\0'; |
| 1121 | } |
| 1122 | else |
| 1123 | group[0] = '\0'; |
| 1124 | } |
| 1125 | |
| 1126 | /* Collect data about shared memory recorded in /proc and write it |
| 1127 | into READBUF. */ |
| 1128 | |
| 1129 | static LONGEST |
| 1130 | linux_xfer_osdata_shm (gdb_byte *readbuf, |
| 1131 | ULONGEST offset, ULONGEST len) |
| 1132 | { |
| 1133 | static const char *buf; |
| 1134 | static LONGEST len_avail = -1; |
| 1135 | static struct buffer buffer; |
| 1136 | |
| 1137 | if (offset == 0) |
| 1138 | { |
| 1139 | if (len_avail != -1 && len_avail != 0) |
| 1140 | buffer_free (&buffer); |
| 1141 | len_avail = 0; |
| 1142 | buf = NULL; |
| 1143 | buffer_init (&buffer); |
| 1144 | buffer_grow_str (&buffer, "<osdata type=\"shared memory\">\n"); |
| 1145 | |
| 1146 | gdb_file_up fp = gdb_fopen_cloexec ("/proc/sysvipc/shm", "r"); |
| 1147 | if (fp) |
| 1148 | { |
| 1149 | char buf[8192]; |
| 1150 | |
| 1151 | do |
| 1152 | { |
| 1153 | if (fgets (buf, sizeof (buf), fp.get ())) |
| 1154 | { |
| 1155 | key_t key; |
| 1156 | uid_t uid, cuid; |
| 1157 | gid_t gid, cgid; |
| 1158 | PID_T cpid, lpid; |
| 1159 | int shmid, size, nattch; |
| 1160 | TIME_T atime, dtime, ctime; |
| 1161 | unsigned int perms; |
| 1162 | int items_read; |
| 1163 | |
| 1164 | items_read = sscanf (buf, |
| 1165 | "%d %d %o %d %lld %lld %d %u %u %u %u %lld %lld %lld", |
| 1166 | &key, &shmid, &perms, &size, |
| 1167 | &cpid, &lpid, |
| 1168 | &nattch, |
| 1169 | &uid, &gid, &cuid, &cgid, |
| 1170 | &atime, &dtime, &ctime); |
| 1171 | |
| 1172 | if (items_read == 14) |
| 1173 | { |
| 1174 | char user[UT_NAMESIZE], group[UT_NAMESIZE]; |
| 1175 | char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; |
| 1176 | char ccmd[32], lcmd[32]; |
| 1177 | char atime_str[32], dtime_str[32], ctime_str[32]; |
| 1178 | |
| 1179 | user_from_uid (user, sizeof (user), uid); |
| 1180 | group_from_gid (group, sizeof (group), gid); |
| 1181 | user_from_uid (cuser, sizeof (cuser), cuid); |
| 1182 | group_from_gid (cgroup, sizeof (cgroup), cgid); |
| 1183 | |
| 1184 | command_from_pid (ccmd, sizeof (ccmd), cpid); |
| 1185 | command_from_pid (lcmd, sizeof (lcmd), lpid); |
| 1186 | |
| 1187 | time_from_time_t (atime_str, sizeof (atime_str), atime); |
| 1188 | time_from_time_t (dtime_str, sizeof (dtime_str), dtime); |
| 1189 | time_from_time_t (ctime_str, sizeof (ctime_str), ctime); |
| 1190 | |
| 1191 | buffer_xml_printf ( |
| 1192 | &buffer, |
| 1193 | "<item>" |
| 1194 | "<column name=\"key\">%d</column>" |
| 1195 | "<column name=\"shmid\">%d</column>" |
| 1196 | "<column name=\"permissions\">%o</column>" |
| 1197 | "<column name=\"size\">%d</column>" |
| 1198 | "<column name=\"creator command\">%s</column>" |
| 1199 | "<column name=\"last op. command\">%s</column>" |
| 1200 | "<column name=\"num attached\">%d</column>" |
| 1201 | "<column name=\"user\">%s</column>" |
| 1202 | "<column name=\"group\">%s</column>" |
| 1203 | "<column name=\"creator user\">%s</column>" |
| 1204 | "<column name=\"creator group\">%s</column>" |
| 1205 | "<column name=\"last shmat() time\">%s</column>" |
| 1206 | "<column name=\"last shmdt() time\">%s</column>" |
| 1207 | "<column name=\"last shmctl() time\">%s</column>" |
| 1208 | "</item>", |
| 1209 | key, |
| 1210 | shmid, |
| 1211 | perms, |
| 1212 | size, |
| 1213 | ccmd, |
| 1214 | lcmd, |
| 1215 | nattch, |
| 1216 | user, |
| 1217 | group, |
| 1218 | cuser, |
| 1219 | cgroup, |
| 1220 | atime_str, |
| 1221 | dtime_str, |
| 1222 | ctime_str); |
| 1223 | } |
| 1224 | } |
| 1225 | } |
| 1226 | while (!feof (fp.get ())); |
| 1227 | } |
| 1228 | |
| 1229 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 1230 | buf = buffer_finish (&buffer); |
| 1231 | len_avail = strlen (buf); |
| 1232 | } |
| 1233 | |
| 1234 | if (offset >= len_avail) |
| 1235 | { |
| 1236 | /* Done. Get rid of the buffer. */ |
| 1237 | buffer_free (&buffer); |
| 1238 | buf = NULL; |
| 1239 | len_avail = 0; |
| 1240 | return 0; |
| 1241 | } |
| 1242 | |
| 1243 | if (len > len_avail - offset) |
| 1244 | len = len_avail - offset; |
| 1245 | memcpy (readbuf, buf + offset, len); |
| 1246 | |
| 1247 | return len; |
| 1248 | } |
| 1249 | |
| 1250 | /* Collect data about semaphores recorded in /proc and write it |
| 1251 | into READBUF. */ |
| 1252 | |
| 1253 | static LONGEST |
| 1254 | linux_xfer_osdata_sem (gdb_byte *readbuf, |
| 1255 | ULONGEST offset, ULONGEST len) |
| 1256 | { |
| 1257 | static const char *buf; |
| 1258 | static LONGEST len_avail = -1; |
| 1259 | static struct buffer buffer; |
| 1260 | |
| 1261 | if (offset == 0) |
| 1262 | { |
| 1263 | if (len_avail != -1 && len_avail != 0) |
| 1264 | buffer_free (&buffer); |
| 1265 | len_avail = 0; |
| 1266 | buf = NULL; |
| 1267 | buffer_init (&buffer); |
| 1268 | buffer_grow_str (&buffer, "<osdata type=\"semaphores\">\n"); |
| 1269 | |
| 1270 | gdb_file_up fp = gdb_fopen_cloexec ("/proc/sysvipc/sem", "r"); |
| 1271 | if (fp) |
| 1272 | { |
| 1273 | char buf[8192]; |
| 1274 | |
| 1275 | do |
| 1276 | { |
| 1277 | if (fgets (buf, sizeof (buf), fp.get ())) |
| 1278 | { |
| 1279 | key_t key; |
| 1280 | uid_t uid, cuid; |
| 1281 | gid_t gid, cgid; |
| 1282 | unsigned int perms, nsems; |
| 1283 | int semid; |
| 1284 | TIME_T otime, ctime; |
| 1285 | int items_read; |
| 1286 | |
| 1287 | items_read = sscanf (buf, |
| 1288 | "%d %d %o %u %d %d %d %d %lld %lld", |
| 1289 | &key, &semid, &perms, &nsems, |
| 1290 | &uid, &gid, &cuid, &cgid, |
| 1291 | &otime, &ctime); |
| 1292 | |
| 1293 | if (items_read == 10) |
| 1294 | { |
| 1295 | char user[UT_NAMESIZE], group[UT_NAMESIZE]; |
| 1296 | char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; |
| 1297 | char otime_str[32], ctime_str[32]; |
| 1298 | |
| 1299 | user_from_uid (user, sizeof (user), uid); |
| 1300 | group_from_gid (group, sizeof (group), gid); |
| 1301 | user_from_uid (cuser, sizeof (cuser), cuid); |
| 1302 | group_from_gid (cgroup, sizeof (cgroup), cgid); |
| 1303 | |
| 1304 | time_from_time_t (otime_str, sizeof (otime_str), otime); |
| 1305 | time_from_time_t (ctime_str, sizeof (ctime_str), ctime); |
| 1306 | |
| 1307 | buffer_xml_printf ( |
| 1308 | &buffer, |
| 1309 | "<item>" |
| 1310 | "<column name=\"key\">%d</column>" |
| 1311 | "<column name=\"semid\">%d</column>" |
| 1312 | "<column name=\"permissions\">%o</column>" |
| 1313 | "<column name=\"num semaphores\">%u</column>" |
| 1314 | "<column name=\"user\">%s</column>" |
| 1315 | "<column name=\"group\">%s</column>" |
| 1316 | "<column name=\"creator user\">%s</column>" |
| 1317 | "<column name=\"creator group\">%s</column>" |
| 1318 | "<column name=\"last semop() time\">%s</column>" |
| 1319 | "<column name=\"last semctl() time\">%s</column>" |
| 1320 | "</item>", |
| 1321 | key, |
| 1322 | semid, |
| 1323 | perms, |
| 1324 | nsems, |
| 1325 | user, |
| 1326 | group, |
| 1327 | cuser, |
| 1328 | cgroup, |
| 1329 | otime_str, |
| 1330 | ctime_str); |
| 1331 | } |
| 1332 | } |
| 1333 | } |
| 1334 | while (!feof (fp.get ())); |
| 1335 | } |
| 1336 | |
| 1337 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 1338 | buf = buffer_finish (&buffer); |
| 1339 | len_avail = strlen (buf); |
| 1340 | } |
| 1341 | |
| 1342 | if (offset >= len_avail) |
| 1343 | { |
| 1344 | /* Done. Get rid of the buffer. */ |
| 1345 | buffer_free (&buffer); |
| 1346 | buf = NULL; |
| 1347 | len_avail = 0; |
| 1348 | return 0; |
| 1349 | } |
| 1350 | |
| 1351 | if (len > len_avail - offset) |
| 1352 | len = len_avail - offset; |
| 1353 | memcpy (readbuf, buf + offset, len); |
| 1354 | |
| 1355 | return len; |
| 1356 | } |
| 1357 | |
| 1358 | /* Collect data about message queues recorded in /proc and write it |
| 1359 | into READBUF. */ |
| 1360 | |
| 1361 | static LONGEST |
| 1362 | linux_xfer_osdata_msg (gdb_byte *readbuf, |
| 1363 | ULONGEST offset, ULONGEST len) |
| 1364 | { |
| 1365 | static const char *buf; |
| 1366 | static LONGEST len_avail = -1; |
| 1367 | static struct buffer buffer; |
| 1368 | |
| 1369 | if (offset == 0) |
| 1370 | { |
| 1371 | if (len_avail != -1 && len_avail != 0) |
| 1372 | buffer_free (&buffer); |
| 1373 | len_avail = 0; |
| 1374 | buf = NULL; |
| 1375 | buffer_init (&buffer); |
| 1376 | buffer_grow_str (&buffer, "<osdata type=\"message queues\">\n"); |
| 1377 | |
| 1378 | gdb_file_up fp = gdb_fopen_cloexec ("/proc/sysvipc/msg", "r"); |
| 1379 | if (fp) |
| 1380 | { |
| 1381 | char buf[8192]; |
| 1382 | |
| 1383 | do |
| 1384 | { |
| 1385 | if (fgets (buf, sizeof (buf), fp.get ())) |
| 1386 | { |
| 1387 | key_t key; |
| 1388 | PID_T lspid, lrpid; |
| 1389 | uid_t uid, cuid; |
| 1390 | gid_t gid, cgid; |
| 1391 | unsigned int perms, cbytes, qnum; |
| 1392 | int msqid; |
| 1393 | TIME_T stime, rtime, ctime; |
| 1394 | int items_read; |
| 1395 | |
| 1396 | items_read = sscanf (buf, |
| 1397 | "%d %d %o %u %u %lld %lld %d %d %d %d %lld %lld %lld", |
| 1398 | &key, &msqid, &perms, &cbytes, &qnum, |
| 1399 | &lspid, &lrpid, &uid, &gid, &cuid, &cgid, |
| 1400 | &stime, &rtime, &ctime); |
| 1401 | |
| 1402 | if (items_read == 14) |
| 1403 | { |
| 1404 | char user[UT_NAMESIZE], group[UT_NAMESIZE]; |
| 1405 | char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; |
| 1406 | char lscmd[32], lrcmd[32]; |
| 1407 | char stime_str[32], rtime_str[32], ctime_str[32]; |
| 1408 | |
| 1409 | user_from_uid (user, sizeof (user), uid); |
| 1410 | group_from_gid (group, sizeof (group), gid); |
| 1411 | user_from_uid (cuser, sizeof (cuser), cuid); |
| 1412 | group_from_gid (cgroup, sizeof (cgroup), cgid); |
| 1413 | |
| 1414 | command_from_pid (lscmd, sizeof (lscmd), lspid); |
| 1415 | command_from_pid (lrcmd, sizeof (lrcmd), lrpid); |
| 1416 | |
| 1417 | time_from_time_t (stime_str, sizeof (stime_str), stime); |
| 1418 | time_from_time_t (rtime_str, sizeof (rtime_str), rtime); |
| 1419 | time_from_time_t (ctime_str, sizeof (ctime_str), ctime); |
| 1420 | |
| 1421 | buffer_xml_printf ( |
| 1422 | &buffer, |
| 1423 | "<item>" |
| 1424 | "<column name=\"key\">%d</column>" |
| 1425 | "<column name=\"msqid\">%d</column>" |
| 1426 | "<column name=\"permissions\">%o</column>" |
| 1427 | "<column name=\"num used bytes\">%u</column>" |
| 1428 | "<column name=\"num messages\">%u</column>" |
| 1429 | "<column name=\"last msgsnd() command\">%s</column>" |
| 1430 | "<column name=\"last msgrcv() command\">%s</column>" |
| 1431 | "<column name=\"user\">%s</column>" |
| 1432 | "<column name=\"group\">%s</column>" |
| 1433 | "<column name=\"creator user\">%s</column>" |
| 1434 | "<column name=\"creator group\">%s</column>" |
| 1435 | "<column name=\"last msgsnd() time\">%s</column>" |
| 1436 | "<column name=\"last msgrcv() time\">%s</column>" |
| 1437 | "<column name=\"last msgctl() time\">%s</column>" |
| 1438 | "</item>", |
| 1439 | key, |
| 1440 | msqid, |
| 1441 | perms, |
| 1442 | cbytes, |
| 1443 | qnum, |
| 1444 | lscmd, |
| 1445 | lrcmd, |
| 1446 | user, |
| 1447 | group, |
| 1448 | cuser, |
| 1449 | cgroup, |
| 1450 | stime_str, |
| 1451 | rtime_str, |
| 1452 | ctime_str); |
| 1453 | } |
| 1454 | } |
| 1455 | } |
| 1456 | while (!feof (fp.get ())); |
| 1457 | } |
| 1458 | |
| 1459 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 1460 | buf = buffer_finish (&buffer); |
| 1461 | len_avail = strlen (buf); |
| 1462 | } |
| 1463 | |
| 1464 | if (offset >= len_avail) |
| 1465 | { |
| 1466 | /* Done. Get rid of the buffer. */ |
| 1467 | buffer_free (&buffer); |
| 1468 | buf = NULL; |
| 1469 | len_avail = 0; |
| 1470 | return 0; |
| 1471 | } |
| 1472 | |
| 1473 | if (len > len_avail - offset) |
| 1474 | len = len_avail - offset; |
| 1475 | memcpy (readbuf, buf + offset, len); |
| 1476 | |
| 1477 | return len; |
| 1478 | } |
| 1479 | |
| 1480 | /* Collect data about loaded kernel modules and write it into |
| 1481 | READBUF. */ |
| 1482 | |
| 1483 | static LONGEST |
| 1484 | linux_xfer_osdata_modules (gdb_byte *readbuf, |
| 1485 | ULONGEST offset, ULONGEST len) |
| 1486 | { |
| 1487 | static const char *buf; |
| 1488 | static LONGEST len_avail = -1; |
| 1489 | static struct buffer buffer; |
| 1490 | |
| 1491 | if (offset == 0) |
| 1492 | { |
| 1493 | if (len_avail != -1 && len_avail != 0) |
| 1494 | buffer_free (&buffer); |
| 1495 | len_avail = 0; |
| 1496 | buf = NULL; |
| 1497 | buffer_init (&buffer); |
| 1498 | buffer_grow_str (&buffer, "<osdata type=\"modules\">\n"); |
| 1499 | |
| 1500 | gdb_file_up fp = gdb_fopen_cloexec ("/proc/modules", "r"); |
| 1501 | if (fp) |
| 1502 | { |
| 1503 | char buf[8192]; |
| 1504 | |
| 1505 | do |
| 1506 | { |
| 1507 | if (fgets (buf, sizeof (buf), fp.get ())) |
| 1508 | { |
| 1509 | char *name, *dependencies, *status, *tmp; |
| 1510 | unsigned int size; |
| 1511 | unsigned long long address; |
| 1512 | int uses; |
| 1513 | |
| 1514 | name = strtok (buf, " "); |
| 1515 | if (name == NULL) |
| 1516 | continue; |
| 1517 | |
| 1518 | tmp = strtok (NULL, " "); |
| 1519 | if (tmp == NULL) |
| 1520 | continue; |
| 1521 | if (sscanf (tmp, "%u", &size) != 1) |
| 1522 | continue; |
| 1523 | |
| 1524 | tmp = strtok (NULL, " "); |
| 1525 | if (tmp == NULL) |
| 1526 | continue; |
| 1527 | if (sscanf (tmp, "%d", &uses) != 1) |
| 1528 | continue; |
| 1529 | |
| 1530 | dependencies = strtok (NULL, " "); |
| 1531 | if (dependencies == NULL) |
| 1532 | continue; |
| 1533 | |
| 1534 | status = strtok (NULL, " "); |
| 1535 | if (status == NULL) |
| 1536 | continue; |
| 1537 | |
| 1538 | tmp = strtok (NULL, "\n"); |
| 1539 | if (tmp == NULL) |
| 1540 | continue; |
| 1541 | if (sscanf (tmp, "%llx", &address) != 1) |
| 1542 | continue; |
| 1543 | |
| 1544 | buffer_xml_printf ( |
| 1545 | &buffer, |
| 1546 | "<item>" |
| 1547 | "<column name=\"name\">%s</column>" |
| 1548 | "<column name=\"size\">%u</column>" |
| 1549 | "<column name=\"num uses\">%d</column>" |
| 1550 | "<column name=\"dependencies\">%s</column>" |
| 1551 | "<column name=\"status\">%s</column>" |
| 1552 | "<column name=\"address\">%llx</column>" |
| 1553 | "</item>", |
| 1554 | name, |
| 1555 | size, |
| 1556 | uses, |
| 1557 | dependencies, |
| 1558 | status, |
| 1559 | address); |
| 1560 | } |
| 1561 | } |
| 1562 | while (!feof (fp.get ())); |
| 1563 | } |
| 1564 | |
| 1565 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 1566 | buf = buffer_finish (&buffer); |
| 1567 | len_avail = strlen (buf); |
| 1568 | } |
| 1569 | |
| 1570 | if (offset >= len_avail) |
| 1571 | { |
| 1572 | /* Done. Get rid of the buffer. */ |
| 1573 | buffer_free (&buffer); |
| 1574 | buf = NULL; |
| 1575 | len_avail = 0; |
| 1576 | return 0; |
| 1577 | } |
| 1578 | |
| 1579 | if (len > len_avail - offset) |
| 1580 | len = len_avail - offset; |
| 1581 | memcpy (readbuf, buf + offset, len); |
| 1582 | |
| 1583 | return len; |
| 1584 | } |
| 1585 | |
| 1586 | struct osdata_type { |
| 1587 | const char *type; |
| 1588 | const char *title; |
| 1589 | const char *description; |
| 1590 | LONGEST (*getter) (gdb_byte *readbuf, ULONGEST offset, ULONGEST len); |
| 1591 | } osdata_table[] = { |
| 1592 | { "cpus", "CPUs", "Listing of all cpus/cores on the system", |
| 1593 | linux_xfer_osdata_cpus }, |
| 1594 | { "files", "File descriptors", "Listing of all file descriptors", |
| 1595 | linux_xfer_osdata_fds }, |
| 1596 | { "modules", "Kernel modules", "Listing of all loaded kernel modules", |
| 1597 | linux_xfer_osdata_modules }, |
| 1598 | { "msg", "Message queues", "Listing of all message queues", |
| 1599 | linux_xfer_osdata_msg }, |
| 1600 | { "processes", "Processes", "Listing of all processes", |
| 1601 | linux_xfer_osdata_processes }, |
| 1602 | { "procgroups", "Process groups", "Listing of all process groups", |
| 1603 | linux_xfer_osdata_processgroups }, |
| 1604 | { "semaphores", "Semaphores", "Listing of all semaphores", |
| 1605 | linux_xfer_osdata_sem }, |
| 1606 | { "shm", "Shared-memory regions", "Listing of all shared-memory regions", |
| 1607 | linux_xfer_osdata_shm }, |
| 1608 | { "sockets", "Sockets", "Listing of all internet-domain sockets", |
| 1609 | linux_xfer_osdata_isockets }, |
| 1610 | { "threads", "Threads", "Listing of all threads", |
| 1611 | linux_xfer_osdata_threads }, |
| 1612 | { NULL, NULL, NULL } |
| 1613 | }; |
| 1614 | |
| 1615 | LONGEST |
| 1616 | linux_common_xfer_osdata (const char *annex, gdb_byte *readbuf, |
| 1617 | ULONGEST offset, ULONGEST len) |
| 1618 | { |
| 1619 | if (!annex || *annex == '\0') |
| 1620 | { |
| 1621 | static const char *buf; |
| 1622 | static LONGEST len_avail = -1; |
| 1623 | static struct buffer buffer; |
| 1624 | |
| 1625 | if (offset == 0) |
| 1626 | { |
| 1627 | int i; |
| 1628 | |
| 1629 | if (len_avail != -1 && len_avail != 0) |
| 1630 | buffer_free (&buffer); |
| 1631 | len_avail = 0; |
| 1632 | buf = NULL; |
| 1633 | buffer_init (&buffer); |
| 1634 | buffer_grow_str (&buffer, "<osdata type=\"types\">\n"); |
| 1635 | |
| 1636 | for (i = 0; osdata_table[i].type; ++i) |
| 1637 | buffer_xml_printf ( |
| 1638 | &buffer, |
| 1639 | "<item>" |
| 1640 | "<column name=\"Type\">%s</column>" |
| 1641 | "<column name=\"Description\">%s</column>" |
| 1642 | "<column name=\"Title\">%s</column>" |
| 1643 | "</item>", |
| 1644 | osdata_table[i].type, |
| 1645 | osdata_table[i].description, |
| 1646 | osdata_table[i].title); |
| 1647 | |
| 1648 | buffer_grow_str0 (&buffer, "</osdata>\n"); |
| 1649 | buf = buffer_finish (&buffer); |
| 1650 | len_avail = strlen (buf); |
| 1651 | } |
| 1652 | |
| 1653 | if (offset >= len_avail) |
| 1654 | { |
| 1655 | /* Done. Get rid of the buffer. */ |
| 1656 | buffer_free (&buffer); |
| 1657 | buf = NULL; |
| 1658 | len_avail = 0; |
| 1659 | return 0; |
| 1660 | } |
| 1661 | |
| 1662 | if (len > len_avail - offset) |
| 1663 | len = len_avail - offset; |
| 1664 | memcpy (readbuf, buf + offset, len); |
| 1665 | |
| 1666 | return len; |
| 1667 | } |
| 1668 | else |
| 1669 | { |
| 1670 | int i; |
| 1671 | |
| 1672 | for (i = 0; osdata_table[i].type; ++i) |
| 1673 | { |
| 1674 | if (strcmp (annex, osdata_table[i].type) == 0) |
| 1675 | { |
| 1676 | gdb_assert (readbuf); |
| 1677 | |
| 1678 | return (osdata_table[i].getter) (readbuf, offset, len); |
| 1679 | } |
| 1680 | } |
| 1681 | |
| 1682 | return 0; |
| 1683 | } |
| 1684 | } |