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 uint64_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_EVENT, "ev" }, 207 { CAP_KQUEUE_EVENT, "ke" }, 208 { CAP_KQUEUE_CHANGE, "kc" }, 209 210 /* Strange and powerful rights that should not be given lightly. */ 211 { CAP_IOCTL, "io" }, 212 { CAP_TTYHOOK, "ty" }, 213 214 /* Process management via process descriptors. */ 215 { CAP_PDGETPID, "pg" }, 216 { CAP_PDWAIT, "pw" }, 217 { CAP_PDKILL, "pk" }, 218 219 /* 220 * Rights that allow to use bindat(2) and connectat(2) syscalls on a 221 * directory descriptor. 222 */ 223 { CAP_BINDAT, "ba" }, 224 { CAP_CONNECTAT, "ca" }, 225 226 /* Aliases and defines that combine multiple rights. */ 227 { CAP_PREAD, "prd" }, 228 { CAP_PWRITE, "pwr" }, 229 230 { CAP_MMAP_R, "mmr" }, 231 { CAP_MMAP_W, "mmw" }, 232 { CAP_MMAP_X, "mmx" }, 233 { CAP_MMAP_RW, "mrw" }, 234 { CAP_MMAP_RX, "mrx" }, 235 { CAP_MMAP_WX, "mwx" }, 236 { CAP_MMAP_RWX, "mma" }, 237 238 { CAP_RECV, "re" }, 239 { CAP_SEND, "sd" }, 240 241 { CAP_SOCK_CLIENT, "scl" }, 242 { CAP_SOCK_SERVER, "ssr" }, 243 }; 244 static const u_int cap_desc_count = sizeof(cap_desc) / 245 sizeof(cap_desc[0]); 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, width; 269 270 count = 0; 271 width = 0; 272 for (i = width_capability(rightsp); i < capwidth; i++) { 273 if (i != 0) 274 printf(" "); 275 else 276 printf("-"); 277 } 278 for (i = 0; i < cap_desc_count; i++) { 279 if (cap_rights_is_set(rightsp, cap_desc[i].cd_right)) { 280 printf("%s%s", count ? "," : "", cap_desc[i].cd_desc); 281 width += strlen(cap_desc[i].cd_desc); 282 if (count) 283 width++; 284 count++; 285 } 286 } 287 } 288 289 void 290 procstat_files(struct procstat *procstat, struct kinfo_proc *kipp) 291 { 292 struct sockstat sock; 293 struct filestat_list *head; 294 struct filestat *fst; 295 const char *str; 296 struct vnstat vn; 297 u_int capwidth, width; 298 int error; 299 300 /* 301 * To print the header in capability mode, we need to know the width 302 * of the widest capability string. Even if we get no processes 303 * back, we will print the header, so we defer aborting due to a lack 304 * of processes until after the header logic. 305 */ 306 capwidth = 0; 307 head = procstat_getfiles(procstat, kipp, 0); 308 if (head != NULL && Cflag) { 309 STAILQ_FOREACH(fst, head, next) { 310 width = width_capability(&fst->fs_cap_rights); 311 if (width > capwidth) 312 capwidth = width; 313 } 314 if (capwidth < strlen("CAPABILITIES")) 315 capwidth = strlen("CAPABILITIES"); 316 } 317 318 if (!hflag) { 319 if (Cflag) 320 printf("%5s %-16s %4s %1s %-9s %-*s " 321 "%-3s %-12s\n", "PID", "COMM", "FD", "T", 322 "FLAGS", capwidth, "CAPABILITIES", "PRO", 323 "NAME"); 324 else 325 printf("%5s %-16s %4s %1s %1s %-9s " 326 "%3s %7s %-3s %-12s\n", "PID", "COMM", "FD", "T", 327 "V", "FLAGS", "REF", "OFFSET", "PRO", "NAME"); 328 } 329 330 if (head == NULL) 331 return; 332 STAILQ_FOREACH(fst, head, next) { 333 printf("%5d ", kipp->ki_pid); 334 printf("%-16s ", kipp->ki_comm); 335 if (fst->fs_uflags & PS_FST_UFLAG_CTTY) 336 printf(" ctty "); 337 else if (fst->fs_uflags & PS_FST_UFLAG_CDIR) 338 printf(" cwd "); 339 else if (fst->fs_uflags & PS_FST_UFLAG_JAIL) 340 printf(" jail "); 341 else if (fst->fs_uflags & PS_FST_UFLAG_RDIR) 342 printf(" root "); 343 else if (fst->fs_uflags & PS_FST_UFLAG_TEXT) 344 printf(" text "); 345 else if (fst->fs_uflags & PS_FST_UFLAG_TRACE) 346 printf("trace "); 347 else 348 printf("%5d ", fst->fs_fd); 349 350 switch (fst->fs_type) { 351 case PS_FST_TYPE_VNODE: 352 str = "v"; 353 break; 354 355 case PS_FST_TYPE_SOCKET: 356 str = "s"; 357 break; 358 359 case PS_FST_TYPE_PIPE: 360 str = "p"; 361 break; 362 363 case PS_FST_TYPE_FIFO: 364 str = "f"; 365 break; 366 367 case PS_FST_TYPE_KQUEUE: 368 str = "k"; 369 break; 370 371 case PS_FST_TYPE_CRYPTO: 372 str = "c"; 373 break; 374 375 case PS_FST_TYPE_MQUEUE: 376 str = "m"; 377 break; 378 379 case PS_FST_TYPE_SHM: 380 str = "h"; 381 break; 382 383 case PS_FST_TYPE_PTS: 384 str = "t"; 385 break; 386 387 case PS_FST_TYPE_SEM: 388 str = "e"; 389 break; 390 391 case PS_FST_TYPE_NONE: 392 case PS_FST_TYPE_UNKNOWN: 393 default: 394 str = "?"; 395 break; 396 } 397 printf("%1s ", str); 398 if (!Cflag) { 399 str = "-"; 400 if (fst->fs_type == PS_FST_TYPE_VNODE) { 401 error = procstat_get_vnode_info(procstat, fst, 402 &vn, NULL); 403 switch (vn.vn_type) { 404 case PS_FST_VTYPE_VREG: 405 str = "r"; 406 break; 407 408 case PS_FST_VTYPE_VDIR: 409 str = "d"; 410 break; 411 412 case PS_FST_VTYPE_VBLK: 413 str = "b"; 414 break; 415 416 case PS_FST_VTYPE_VCHR: 417 str = "c"; 418 break; 419 420 case PS_FST_VTYPE_VLNK: 421 str = "l"; 422 break; 423 424 case PS_FST_VTYPE_VSOCK: 425 str = "s"; 426 break; 427 428 case PS_FST_VTYPE_VFIFO: 429 str = "f"; 430 break; 431 432 case PS_FST_VTYPE_VBAD: 433 str = "x"; 434 break; 435 436 case PS_FST_VTYPE_VNON: 437 case PS_FST_VTYPE_UNKNOWN: 438 default: 439 str = "?"; 440 break; 441 } 442 } 443 printf("%1s ", str); 444 } 445 printf("%s", fst->fs_fflags & PS_FST_FFLAG_READ ? "r" : "-"); 446 printf("%s", fst->fs_fflags & PS_FST_FFLAG_WRITE ? "w" : "-"); 447 printf("%s", fst->fs_fflags & PS_FST_FFLAG_APPEND ? "a" : "-"); 448 printf("%s", fst->fs_fflags & PS_FST_FFLAG_ASYNC ? "s" : "-"); 449 printf("%s", fst->fs_fflags & PS_FST_FFLAG_SYNC ? "f" : "-"); 450 printf("%s", fst->fs_fflags & PS_FST_FFLAG_NONBLOCK ? "n" : "-"); 451 printf("%s", fst->fs_fflags & PS_FST_FFLAG_DIRECT ? "d" : "-"); 452 printf("%s", fst->fs_fflags & PS_FST_FFLAG_HASLOCK ? "l" : "-"); 453 if (!Cflag) { 454 if (fst->fs_ref_count > -1) 455 printf("%3d ", fst->fs_ref_count); 456 else 457 printf("%3c ", '-'); 458 if (fst->fs_offset > -1) 459 printf("%7jd ", (intmax_t)fst->fs_offset); 460 else 461 printf("%7c ", '-'); 462 } 463 if (Cflag) { 464 print_capability(&fst->fs_cap_rights, capwidth); 465 printf(" "); 466 } 467 switch (fst->fs_type) { 468 case PS_FST_TYPE_SOCKET: 469 error = procstat_get_socket_info(procstat, fst, &sock, NULL); 470 if (error != 0) 471 break; 472 printf("%-3s ", 473 protocol_to_string(sock.dom_family, 474 sock.type, sock.proto)); 475 /* 476 * While generally we like to print two addresses, 477 * local and peer, for sockets, it turns out to be 478 * more useful to print the first non-nul address for 479 * local sockets, as typically they aren't bound and 480 * connected, and the path strings can get long. 481 */ 482 if (sock.dom_family == AF_LOCAL) { 483 struct sockaddr_un *sun = 484 (struct sockaddr_un *)&sock.sa_local; 485 486 if (sun->sun_path[0] != 0) 487 print_address(&sock.sa_local); 488 else 489 print_address(&sock.sa_peer); 490 } else { 491 print_address(&sock.sa_local); 492 printf(" "); 493 print_address(&sock.sa_peer); 494 } 495 break; 496 497 default: 498 printf("%-3s ", "-"); 499 printf("%-18s", fst->fs_path != NULL ? fst->fs_path : "-"); 500 } 501 502 printf("\n"); 503 } 504 procstat_freefiles(procstat, head); 505 } 506