1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2007-2011 Robert N. M. Watson 5 * Copyright (c) 2015 Allan Jude <allanjude@freebsd.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 #include <sys/param.h> 32 #include <sys/capsicum.h> 33 #include <sys/socket.h> 34 #include <sys/sysctl.h> 35 #include <sys/un.h> 36 #include <sys/user.h> 37 38 #include <netinet/in.h> 39 40 #include <arpa/inet.h> 41 42 #include <err.h> 43 #include <libprocstat.h> 44 #include <inttypes.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 49 #include "procstat.h" 50 51 static const char * 52 protocol_to_string(int domain, int type, int protocol) 53 { 54 55 switch (domain) { 56 case AF_INET: 57 case AF_INET6: 58 switch (protocol) { 59 case IPPROTO_TCP: 60 return ("TCP"); 61 case IPPROTO_UDP: 62 return ("UDP"); 63 case IPPROTO_ICMP: 64 return ("ICM"); 65 case IPPROTO_RAW: 66 return ("RAW"); 67 case IPPROTO_SCTP: 68 return ("SCT"); 69 default: 70 return ("IP?"); 71 } 72 73 case AF_LOCAL: 74 switch (type) { 75 case SOCK_STREAM: 76 return ("UDS"); 77 case SOCK_DGRAM: 78 return ("UDD"); 79 default: 80 return ("UD?"); 81 } 82 case AF_DIVERT: 83 return ("IPD"); 84 break; 85 default: 86 return ("?"); 87 } 88 } 89 90 static void 91 addr_to_string(struct sockaddr_storage *ss, char *buffer, int buflen) 92 { 93 char buffer2[INET6_ADDRSTRLEN]; 94 struct sockaddr_in6 *sin6; 95 struct sockaddr_in *sin; 96 struct sockaddr_un *sun; 97 98 switch (ss->ss_family) { 99 case AF_LOCAL: 100 sun = (struct sockaddr_un *)ss; 101 if (strlen(sun->sun_path) == 0) 102 strlcpy(buffer, "-", buflen); 103 else 104 strlcpy(buffer, sun->sun_path, buflen); 105 break; 106 107 case AF_INET: 108 sin = (struct sockaddr_in *)ss; 109 if (sin->sin_addr.s_addr == INADDR_ANY) 110 snprintf(buffer, buflen, "%s:%d", "*", 111 ntohs(sin->sin_port)); 112 else if (inet_ntop(AF_INET, &sin->sin_addr, buffer2, 113 sizeof(buffer2)) != NULL) 114 snprintf(buffer, buflen, "%s:%d", buffer2, 115 ntohs(sin->sin_port)); 116 break; 117 118 case AF_INET6: 119 sin6 = (struct sockaddr_in6 *)ss; 120 if (inet_ntop(AF_INET6, &sin6->sin6_addr, buffer2, 121 sizeof(buffer2)) != NULL) 122 snprintf(buffer, buflen, "%s.%d", buffer2, 123 ntohs(sin6->sin6_port)); 124 else 125 strlcpy(buffer, "-", buflen); 126 break; 127 128 default: 129 strlcpy(buffer, "", buflen); 130 break; 131 } 132 } 133 134 static struct cap_desc { 135 uint64_t cd_right; 136 const char *cd_desc; 137 } cap_desc[] = { 138 /* General file I/O. */ 139 { CAP_READ, "rd" }, 140 { CAP_WRITE, "wr" }, 141 { CAP_SEEK, "se" }, 142 { CAP_MMAP, "mm" }, 143 { CAP_CREATE, "cr" }, 144 { CAP_FEXECVE, "fe" }, 145 { CAP_FSYNC, "fy" }, 146 { CAP_FTRUNCATE, "ft" }, 147 148 /* VFS methods. */ 149 { CAP_FCHDIR, "cd" }, 150 { CAP_FCHFLAGS, "cf" }, 151 { CAP_FCHMOD, "cm" }, 152 { CAP_FCHOWN, "cn" }, 153 { CAP_FCNTL, "fc" }, 154 { CAP_FLOCK, "fl" }, 155 { CAP_FPATHCONF, "fp" }, 156 { CAP_FSCK, "fk" }, 157 { CAP_FSTAT, "fs" }, 158 { CAP_FSTATFS, "sf" }, 159 { CAP_FUTIMES, "fu" }, 160 { CAP_LINKAT_SOURCE, "ls" }, 161 { CAP_LINKAT_TARGET, "lt" }, 162 { CAP_MKDIRAT, "md" }, 163 { CAP_MKFIFOAT, "mf" }, 164 { CAP_MKNODAT, "mn" }, 165 { CAP_RENAMEAT_SOURCE, "rs" }, 166 { CAP_RENAMEAT_TARGET, "rt" }, 167 { CAP_SYMLINKAT, "sl" }, 168 { CAP_UNLINKAT, "un" }, 169 170 /* Lookups - used to constrain *at() calls. */ 171 { CAP_LOOKUP, "lo" }, 172 173 /* Extended attributes. */ 174 { CAP_EXTATTR_GET, "eg" }, 175 { CAP_EXTATTR_SET, "es" }, 176 { CAP_EXTATTR_DELETE, "ed" }, 177 { CAP_EXTATTR_LIST, "el" }, 178 179 /* Access Control Lists. */ 180 { CAP_ACL_GET, "ag" }, 181 { CAP_ACL_SET, "as" }, 182 { CAP_ACL_DELETE, "ad" }, 183 { CAP_ACL_CHECK, "ac" }, 184 185 /* Socket operations. */ 186 { CAP_ACCEPT, "at" }, 187 { CAP_BIND, "bd" }, 188 { CAP_CONNECT, "co" }, 189 { CAP_GETPEERNAME, "pn" }, 190 { CAP_GETSOCKNAME, "sn" }, 191 { CAP_GETSOCKOPT, "gs" }, 192 { CAP_LISTEN, "ln" }, 193 { CAP_PEELOFF, "pf" }, 194 { CAP_SETSOCKOPT, "ss" }, 195 { CAP_SHUTDOWN, "sh" }, 196 197 /* Mandatory Access Control. */ 198 { CAP_MAC_GET, "mg" }, 199 { CAP_MAC_SET, "ms" }, 200 201 /* Methods on semaphores. */ 202 { CAP_SEM_GETVALUE, "sg" }, 203 { CAP_SEM_POST, "sp" }, 204 { CAP_SEM_WAIT, "sw" }, 205 206 /* Event monitoring and posting. */ 207 { CAP_EVENT, "ev" }, 208 { CAP_KQUEUE_EVENT, "ke" }, 209 { CAP_KQUEUE_CHANGE, "kc" }, 210 211 /* Strange and powerful rights that should not be given lightly. */ 212 { CAP_IOCTL, "io" }, 213 { CAP_TTYHOOK, "ty" }, 214 215 /* Process management via process descriptors. */ 216 { CAP_PDGETPID, "pg" }, 217 { CAP_PDWAIT, "pw" }, 218 { CAP_PDKILL, "pk" }, 219 220 /* 221 * Rights that allow to use bindat(2) and connectat(2) syscalls on a 222 * directory descriptor. 223 */ 224 { CAP_BINDAT, "ba" }, 225 { CAP_CONNECTAT, "ca" }, 226 227 /* Aliases and defines that combine multiple rights. */ 228 { CAP_PREAD, "prd" }, 229 { CAP_PWRITE, "pwr" }, 230 231 { CAP_MMAP_R, "mmr" }, 232 { CAP_MMAP_W, "mmw" }, 233 { CAP_MMAP_X, "mmx" }, 234 { CAP_MMAP_RW, "mrw" }, 235 { CAP_MMAP_RX, "mrx" }, 236 { CAP_MMAP_WX, "mwx" }, 237 { CAP_MMAP_RWX, "mma" }, 238 239 { CAP_RECV, "re" }, 240 { CAP_SEND, "sd" }, 241 242 { CAP_SOCK_CLIENT, "scl" }, 243 { CAP_SOCK_SERVER, "ssr" }, 244 }; 245 static const u_int cap_desc_count = nitems(cap_desc); 246 247 static u_int 248 width_capability(cap_rights_t *rightsp) 249 { 250 u_int count, i, width; 251 252 count = 0; 253 width = 0; 254 for (i = 0; i < cap_desc_count; i++) { 255 if (cap_rights_is_set(rightsp, cap_desc[i].cd_right)) { 256 width += strlen(cap_desc[i].cd_desc); 257 if (count) 258 width++; 259 count++; 260 } 261 } 262 return (width); 263 } 264 265 static void 266 print_capability(cap_rights_t *rightsp, u_int capwidth) 267 { 268 u_int count, i; 269 270 count = 0; 271 for (i = width_capability(rightsp); i < capwidth; i++) { 272 if (i != 0) 273 xo_emit(" "); 274 else 275 xo_emit("-"); 276 } 277 xo_open_list("capabilities"); 278 for (i = 0; i < cap_desc_count; i++) { 279 if (cap_rights_is_set(rightsp, cap_desc[i].cd_right)) { 280 xo_emit("{D:/%s}{l:capabilities/%s}", count ? "," : "", 281 cap_desc[i].cd_desc); 282 count++; 283 } 284 } 285 xo_close_list("capabilities"); 286 } 287 288 void 289 procstat_files(struct procstat *procstat, struct kinfo_proc *kipp) 290 { 291 struct sockstat sock; 292 struct filestat_list *head; 293 struct filestat *fst; 294 const char *str; 295 struct vnstat vn; 296 u_int capwidth, width; 297 int error; 298 char src_addr[PATH_MAX]; 299 char dst_addr[PATH_MAX]; 300 301 /* 302 * To print the header in capability mode, we need to know the width 303 * of the widest capability string. Even if we get no processes 304 * back, we will print the header, so we defer aborting due to a lack 305 * of processes until after the header logic. 306 */ 307 capwidth = 0; 308 head = procstat_getfiles(procstat, kipp, 0); 309 if (head != NULL && 310 (procstat_opts & PS_OPT_CAPABILITIES) != 0) { 311 STAILQ_FOREACH(fst, head, next) { 312 width = width_capability(&fst->fs_cap_rights); 313 if (width > capwidth) 314 capwidth = width; 315 } 316 if (capwidth < strlen("CAPABILITIES")) 317 capwidth = strlen("CAPABILITIES"); 318 } 319 320 if ((procstat_opts & PS_OPT_NOHEADER) == 0) { 321 if ((procstat_opts & PS_OPT_CAPABILITIES) != 0) 322 xo_emit("{T:/%5s %-16s %5s %1s %-8s %-*s " 323 "%-3s %-12s}\n", "PID", "COMM", "FD", "T", 324 "FLAGS", capwidth, "CAPABILITIES", "PRO", 325 "NAME"); 326 else 327 xo_emit("{T:/%5s %-16s %5s %1s %1s %-8s " 328 "%3s %7s %-3s %-12s}\n", "PID", "COMM", "FD", "T", 329 "V", "FLAGS", "REF", "OFFSET", "PRO", "NAME"); 330 } 331 332 if (head == NULL) 333 return; 334 xo_emit("{ek:process_id/%5d/%d}", kipp->ki_pid); 335 xo_emit("{e:command/%-16s/%s}", kipp->ki_comm); 336 xo_open_list("files"); 337 STAILQ_FOREACH(fst, head, next) { 338 xo_open_instance("files"); 339 xo_emit("{dk:process_id/%5d/%d} ", kipp->ki_pid); 340 xo_emit("{d:command/%-16s/%s} ", kipp->ki_comm); 341 if (fst->fs_uflags & PS_FST_UFLAG_CTTY) 342 xo_emit("{P: }{:fd/%s} ", "ctty"); 343 else if (fst->fs_uflags & PS_FST_UFLAG_CDIR) 344 xo_emit("{P: }{:fd/%s} ", "cwd"); 345 else if (fst->fs_uflags & PS_FST_UFLAG_JAIL) 346 xo_emit("{P: }{:fd/%s} ", "jail"); 347 else if (fst->fs_uflags & PS_FST_UFLAG_RDIR) 348 xo_emit("{P: }{:fd/%s} ", "root"); 349 else if (fst->fs_uflags & PS_FST_UFLAG_TEXT) 350 xo_emit("{P: }{:fd/%s} ", "text"); 351 else if (fst->fs_uflags & PS_FST_UFLAG_TRACE) 352 xo_emit("{:fd/%s} ", "trace"); 353 else 354 xo_emit("{:fd/%5d} ", fst->fs_fd); 355 356 switch (fst->fs_type) { 357 case PS_FST_TYPE_VNODE: 358 str = "v"; 359 xo_emit("{eq:fd_type/vnode}"); 360 break; 361 362 case PS_FST_TYPE_SOCKET: 363 str = "s"; 364 xo_emit("{eq:fd_type/socket}"); 365 break; 366 367 case PS_FST_TYPE_PIPE: 368 str = "p"; 369 xo_emit("{eq:fd_type/pipe}"); 370 break; 371 372 case PS_FST_TYPE_FIFO: 373 str = "f"; 374 xo_emit("{eq:fd_type/fifo}"); 375 break; 376 377 case PS_FST_TYPE_KQUEUE: 378 str = "k"; 379 xo_emit("{eq:fd_type/kqueue}"); 380 break; 381 382 case PS_FST_TYPE_MQUEUE: 383 str = "m"; 384 xo_emit("{eq:fd_type/mqueue}"); 385 break; 386 387 case PS_FST_TYPE_SHM: 388 str = "h"; 389 xo_emit("{eq:fd_type/shm}"); 390 break; 391 392 case PS_FST_TYPE_PTS: 393 str = "t"; 394 xo_emit("{eq:fd_type/pts}"); 395 break; 396 397 case PS_FST_TYPE_SEM: 398 str = "e"; 399 xo_emit("{eq:fd_type/sem}"); 400 break; 401 402 case PS_FST_TYPE_PROCDESC: 403 str = "P"; 404 xo_emit("{eq:fd_type/procdesc}"); 405 break; 406 407 case PS_FST_TYPE_DEV: 408 str = "D"; 409 xo_emit("{eq:fd_type/dev}"); 410 break; 411 412 case PS_FST_TYPE_EVENTFD: 413 str = "E"; 414 xo_emit("{eq:fd_type/eventfd}"); 415 break; 416 417 case PS_FST_TYPE_NONE: 418 str = "?"; 419 xo_emit("{eq:fd_type/none}"); 420 break; 421 422 case PS_FST_TYPE_UNKNOWN: 423 default: 424 str = "?"; 425 xo_emit("{eq:fd_type/unknown}"); 426 break; 427 } 428 xo_emit("{d:fd_type/%1s/%s} ", str); 429 if ((procstat_opts & PS_OPT_CAPABILITIES) == 0) { 430 str = "-"; 431 if (fst->fs_type == PS_FST_TYPE_VNODE) { 432 error = procstat_get_vnode_info(procstat, fst, 433 &vn, NULL); 434 switch (vn.vn_type) { 435 case PS_FST_VTYPE_VREG: 436 str = "r"; 437 xo_emit("{eq:vode_type/regular}"); 438 break; 439 440 case PS_FST_VTYPE_VDIR: 441 str = "d"; 442 xo_emit("{eq:vode_type/directory}"); 443 break; 444 445 case PS_FST_VTYPE_VBLK: 446 str = "b"; 447 xo_emit("{eq:vode_type/block}"); 448 break; 449 450 case PS_FST_VTYPE_VCHR: 451 str = "c"; 452 xo_emit("{eq:vode_type/character}"); 453 break; 454 455 case PS_FST_VTYPE_VLNK: 456 str = "l"; 457 xo_emit("{eq:vode_type/link}"); 458 break; 459 460 case PS_FST_VTYPE_VSOCK: 461 str = "s"; 462 xo_emit("{eq:vode_type/socket}"); 463 break; 464 465 case PS_FST_VTYPE_VFIFO: 466 str = "f"; 467 xo_emit("{eq:vode_type/fifo}"); 468 break; 469 470 case PS_FST_VTYPE_VBAD: 471 str = "x"; 472 xo_emit("{eq:vode_type/revoked_device}"); 473 break; 474 475 case PS_FST_VTYPE_VNON: 476 str = "?"; 477 xo_emit("{eq:vode_type/non}"); 478 break; 479 480 case PS_FST_VTYPE_UNKNOWN: 481 default: 482 str = "?"; 483 xo_emit("{eq:vode_type/unknown}"); 484 break; 485 } 486 } 487 xo_emit("{d:vnode_type/%1s/%s} ", str); 488 } 489 490 xo_emit("{d:/%s}", fst->fs_fflags & PS_FST_FFLAG_READ ? 491 "r" : "-"); 492 xo_emit("{d:/%s}", fst->fs_fflags & PS_FST_FFLAG_WRITE ? 493 "w" : "-"); 494 xo_emit("{d:/%s}", fst->fs_fflags & PS_FST_FFLAG_APPEND ? 495 "a" : "-"); 496 xo_emit("{d:/%s}", fst->fs_fflags & PS_FST_FFLAG_ASYNC ? 497 "s" : "-"); 498 xo_emit("{d:/%s}", fst->fs_fflags & PS_FST_FFLAG_SYNC ? 499 "f" : "-"); 500 xo_emit("{d:/%s}", fst->fs_fflags & PS_FST_FFLAG_NONBLOCK ? 501 "n" : "-"); 502 xo_emit("{d:/%s}", fst->fs_fflags & PS_FST_FFLAG_DIRECT ? 503 "d" : "-"); 504 xo_emit("{d:/%s}", fst->fs_fflags & PS_FST_FFLAG_HASLOCK ? 505 "l" : "-"); 506 xo_emit(" "); 507 xo_open_list("fd_flags"); 508 if (fst->fs_fflags & PS_FST_FFLAG_READ) 509 xo_emit("{elq:fd_flags/read}"); 510 if (fst->fs_fflags & PS_FST_FFLAG_WRITE) 511 xo_emit("{elq:fd_flags/write}"); 512 if (fst->fs_fflags & PS_FST_FFLAG_APPEND) 513 xo_emit("{elq:fd_flags/append}"); 514 if (fst->fs_fflags & PS_FST_FFLAG_ASYNC) 515 xo_emit("{elq:fd_flags/async}"); 516 if (fst->fs_fflags & PS_FST_FFLAG_SYNC) 517 xo_emit("{elq:fd_flags/fsync}"); 518 if (fst->fs_fflags & PS_FST_FFLAG_NONBLOCK) 519 xo_emit("{elq:fd_flags/nonblocking}"); 520 if (fst->fs_fflags & PS_FST_FFLAG_DIRECT) 521 xo_emit("{elq:fd_flags/direct_io}"); 522 if (fst->fs_fflags & PS_FST_FFLAG_HASLOCK) 523 xo_emit("{elq:fd_flags/lock_held}"); 524 xo_close_list("fd_flags"); 525 526 if ((procstat_opts & PS_OPT_CAPABILITIES) == 0) { 527 if (fst->fs_ref_count > -1) 528 xo_emit("{:ref_count/%3d/%d} ", 529 fst->fs_ref_count); 530 else 531 xo_emit("{q:ref_count/%3c/%c} ", '-'); 532 if (fst->fs_offset > -1) 533 xo_emit("{:offset/%7jd/%jd} ", 534 (intmax_t)fst->fs_offset); 535 else 536 xo_emit("{q:offset/%7c/%c} ", '-'); 537 } 538 if ((procstat_opts & PS_OPT_CAPABILITIES) != 0) { 539 print_capability(&fst->fs_cap_rights, capwidth); 540 xo_emit(" "); 541 } 542 switch (fst->fs_type) { 543 case PS_FST_TYPE_SOCKET: 544 error = procstat_get_socket_info(procstat, fst, &sock, 545 NULL); 546 if (error != 0) 547 break; 548 xo_emit("{:protocol/%-3s/%s} ", 549 protocol_to_string(sock.dom_family, 550 sock.type, sock.proto)); 551 if (sock.proto == IPPROTO_TCP || 552 sock.proto == IPPROTO_SCTP || 553 sock.type == SOCK_STREAM) { 554 xo_emit("{:sendq/%u} ", sock.sendq); 555 xo_emit("{:recvq/%u} ", sock.recvq); 556 } 557 /* 558 * While generally we like to print two addresses, 559 * local and peer, for sockets, it turns out to be 560 * more useful to print the first non-nul address for 561 * local sockets, as typically they aren't bound and 562 * connected, and the path strings can get long. 563 */ 564 if (sock.dom_family == AF_LOCAL) { 565 struct sockaddr_un *sun = 566 (struct sockaddr_un *)&sock.sa_local; 567 568 if (sun->sun_path[0] != 0) 569 addr_to_string(&sock.sa_local, 570 src_addr, sizeof(src_addr)); 571 else 572 addr_to_string(&sock.sa_peer, 573 src_addr, sizeof(src_addr)); 574 xo_emit("{:path/%s}", src_addr); 575 } else { 576 addr_to_string(&sock.sa_local, src_addr, 577 sizeof(src_addr)); 578 addr_to_string(&sock.sa_peer, dst_addr, 579 sizeof(dst_addr)); 580 xo_emit("{:path/%s %s}", src_addr, dst_addr); 581 } 582 break; 583 584 default: 585 xo_emit("{:protocol/%-3s/%s} ", "-"); 586 xo_emit("{:path/%-18s/%s}", fst->fs_path != NULL ? 587 fst->fs_path : "-"); 588 } 589 590 xo_emit("\n"); 591 xo_close_instance("files"); 592 } 593 xo_close_list("files"); 594 procstat_freefiles(procstat, head); 595 } 596