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