1 /*- 2 * Copyright (c) 1988 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 char copyright[] = 10 "@(#) Copyright (c) 1988 The Regents of the University of California.\n\ 11 All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)fstat.c 5.27 (Berkeley) 03/05/91"; 16 #endif /* not lint */ 17 18 /* 19 * fstat 20 */ 21 #include <machine/pte.h> 22 23 #include <sys/param.h> 24 #include <sys/time.h> 25 #include <sys/proc.h> 26 #include <sys/text.h> 27 #include <sys/stat.h> 28 #include <sys/vnode.h> 29 #include <sys/socket.h> 30 #include <sys/socketvar.h> 31 #include <sys/domain.h> 32 #include <sys/protosw.h> 33 #include <sys/unpcb.h> 34 #include <sys/vmmac.h> 35 #include <sys/kinfo.h> 36 #include <sys/namei.h> 37 #include <sys/filedesc.h> 38 #define KERNEL 39 #define NFS 40 #include <sys/file.h> 41 #include <sys/mount.h> 42 #include <ufs/quota.h> 43 #include <ufs/inode.h> 44 #include <nfs/nfsv2.h> 45 #include <nfs/nfs.h> 46 #include <nfs/nfsnode.h> 47 #undef KERNEL 48 49 #include <net/route.h> 50 #include <netinet/in.h> 51 #include <netinet/in_systm.h> 52 #include <netinet/ip.h> 53 #include <netinet/in_pcb.h> 54 55 #include <kvm.h> 56 #include <paths.h> 57 #include <ctype.h> 58 #include <nlist.h> 59 #include <pwd.h> 60 #include <string.h> 61 #include <stdio.h> 62 63 #define TEXT -1 64 #define CDIR -2 65 #define RDIR -3 66 #define TRACE -4 67 68 typedef struct devs { 69 struct devs *next; 70 long fsid; 71 ino_t ino; 72 char *name; 73 } DEVS; 74 DEVS *devs; 75 76 struct filestat { 77 long fsid; 78 long fileid; 79 mode_t mode; 80 u_long size; 81 dev_t rdev; 82 }; 83 84 #ifdef notdef 85 struct nlist nl[] = { 86 { "" }, 87 }; 88 #endif 89 90 int fsflg, /* show files on same filesystem as file(s) argument */ 91 pflg, /* show files open by a particular pid */ 92 uflg; /* show files open by a particular (effective) user */ 93 int checkfile; /* true if restricting to particular files or filesystems */ 94 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 95 int vflg; /* display errors in locating kernel data objects etc... */ 96 97 #define dprintf if (vflg) fprintf 98 99 struct file **ofiles; /* buffer of pointers to file structures */ 100 int maxfiles; 101 #define ALLOC_OFILES(d) \ 102 if ((d) > maxfiles) { \ 103 free(ofiles); \ 104 ofiles = (struct file **)malloc((d) * sizeof(struct file *)); \ 105 if (ofiles == NULL) { \ 106 fprintf(stderr, "fstat: out of memory\n"); \ 107 exit(1); \ 108 } \ 109 maxfiles = (d); \ 110 } 111 112 /* 113 * a kvm_read that returns true if everything is read 114 */ 115 #define KVM_READ(kaddr, paddr, len) (kvm_read((kaddr), (paddr), (len)) == (len)) 116 117 extern int errno; 118 off_t lseek(); 119 120 121 main(argc, argv) 122 int argc; 123 char **argv; 124 { 125 register struct passwd *passwd; 126 int what = KINFO_PROC_ALL, arg = 0; 127 struct passwd *getpwnam(), *getpwuid(); 128 struct proc *p; 129 extern char *optarg; 130 extern int optind; 131 int ch; 132 char *malloc(); 133 134 135 while ((ch = getopt(argc, argv, "p:u:fnv")) != EOF) 136 switch((char)ch) { 137 case 'p': 138 if (pflg++) 139 usage(); 140 if (!isdigit(*optarg)) { 141 fputs("fstat: -p option requires a process id.\n", stderr); 142 usage(); 143 } 144 what = KINFO_PROC_PID; 145 arg = atoi(optarg); 146 break; 147 case 'u': 148 if (uflg++) 149 usage(); 150 if (!(passwd = getpwnam(optarg))) { 151 fprintf(stderr, "%s: unknown uid\n", 152 optarg); 153 exit(1); 154 } 155 what = KINFO_PROC_UID; 156 arg = passwd->pw_uid; 157 break; 158 case 'f': 159 fsflg++; 160 break; 161 case 'n': 162 nflg++; 163 break; 164 case 'v': 165 vflg++; 166 break; 167 case '?': 168 default: 169 usage(); 170 } 171 172 if (*(argv += optind)) { 173 for (; *argv; ++argv) { 174 if (getfname(*argv)) 175 checkfile = 1; 176 } 177 if (!checkfile) /* file(s) specified, but none accessable */ 178 exit(1); 179 } 180 181 ALLOC_OFILES(256); /* reverse space for file pointers */ 182 183 if (fsflg && !checkfile) { 184 /* -f with no files means use wd */ 185 if (getfname(".") == 0) 186 exit(1); 187 checkfile = 1; 188 } 189 190 /* modify the following to make work on dead kernels */ 191 if (kvm_openfiles(NULL, NULL, NULL) == -1) { 192 fprintf(stderr, "fstat: %s\n", kvm_geterr()); 193 exit(1); 194 } 195 #ifdef notdef 196 if (kvm_nlist(nl) != 0) { 197 fprintf(stderr, "fstat: no namelist: %s\n", kvm_geterr()); 198 exit(1); 199 } 200 #endif 201 if (kvm_getprocs(what, arg) == -1) { 202 fprintf(stderr, "fstat: %s\n", kvm_geterr()); 203 exit(1); 204 } 205 if (nflg) 206 fputs("USER CMD PID FD DEV INUM MODE SZ|DV", stdout); 207 else 208 fputs("USER CMD PID FD MOUNT INUM MODE SZ|DV", stdout); 209 if (checkfile && fsflg == 0) 210 fputs(" NAME\n", stdout); 211 else 212 putchar('\n'); 213 214 while ((p = kvm_nextproc()) != NULL) { 215 if (p->p_stat == SZOMB) 216 continue; 217 dofiles(p); 218 } 219 exit(0); 220 } 221 222 char *Uname, *Comm; 223 int Pid; 224 225 #define PREFIX(i) printf("%-8.8s %-8s %5d", Uname, Comm, Pid); \ 226 switch(i) { \ 227 case TEXT: \ 228 fputs(" text", stdout); \ 229 break; \ 230 case CDIR: \ 231 fputs(" wd", stdout); \ 232 break; \ 233 case RDIR: \ 234 fputs(" root", stdout); \ 235 break; \ 236 case TRACE: \ 237 fputs(" tr", stdout); \ 238 break; \ 239 default: \ 240 printf(" %4d", i); \ 241 break; \ 242 } 243 244 /* 245 * print open files attributed to this process 246 */ 247 dofiles(p) 248 struct proc *p; 249 { 250 int i, last; 251 struct file file; 252 struct filedesc filed; 253 254 extern char *user_from_uid(); 255 #ifdef notdef 256 struct vnode *xvptr; 257 #endif 258 259 Uname = user_from_uid(p->p_uid, 0); 260 Pid = p->p_pid; 261 Comm = p->p_comm; 262 263 if (p->p_fd == NULL) 264 return; 265 if (!KVM_READ(p->p_fd, &filed, sizeof (struct filedesc))) { 266 dprintf(stderr, "can't read filedesc at %x for pid %d\n", 267 p->p_fd, Pid); 268 return; 269 } 270 /* 271 * root directory vnode, if one 272 */ 273 if (filed.fd_rdir) 274 vtrans(filed.fd_rdir, RDIR); 275 #ifdef notdef 276 /* 277 * text vnode 278 */ 279 if (p->p_textp && 280 KVM_READ(&(p->p_textp->x_vptr), &xvptr, sizeof (struct vnode *)) && 281 xvptr != NULL) 282 vtrans(xvptr, TEXT); 283 #endif 284 /* 285 * current working directory vnode 286 */ 287 vtrans(filed.fd_cdir, CDIR); 288 /* 289 * ktrace vnode, if one 290 */ 291 if (p->p_tracep) 292 vtrans(p->p_tracep, TRACE); 293 /* 294 * open files 295 */ 296 #define FPSIZE (sizeof (struct file *)) 297 ALLOC_OFILES(last=filed.fd_lastfile); 298 #ifdef newvm 299 if (!KVM_READ(filed.fd_ofiles, ofiles, filed.fd_lastfile * FPSIZE)) { 300 dprintf(stderr, "can't read file structures at %x for pid %d\n", 301 filed.fd_ofiles, Pid); 302 return; 303 } 304 #else 305 bcopy(filed.fd_ofile, ofiles, NDFILE * FPSIZE); 306 if ((last > NDFILE) && !KVM_READ(filed.fd_moreofiles, &ofiles[NDFILE], 307 (last - NDFILE) * FPSIZE)) { 308 dprintf(stderr, "can't read rest of files at %x for pid %d\n", 309 filed.fd_moreofiles, Pid); 310 return; 311 } 312 #endif 313 for (i = 0; i <= filed.fd_lastfile; i++) { 314 if (ofiles[i] == NULL) 315 continue; 316 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 317 dprintf(stderr, "can't read file %d at %x for pid %d\n", 318 i, ofiles[i], Pid); 319 continue; 320 } 321 if (file.f_type == DTYPE_VNODE) 322 vtrans((struct vnode *)file.f_data, i); 323 else if (file.f_type == DTYPE_SOCKET && checkfile == 0) 324 socktrans((struct socket *)file.f_data, i); 325 else { 326 dprintf(stderr, 327 "unknown file type %d for file %d of pid %d\n", 328 file.f_type, i, Pid); 329 } 330 } 331 } 332 333 vtrans(vp, i) 334 struct vnode *vp; 335 { 336 struct vnode vn; 337 struct filestat fst; 338 char *filename = NULL; 339 char *badtype = NULL; 340 char *getmnton(); 341 extern char *devname(); 342 char mode[15]; 343 344 if (!KVM_READ((off_t)vp, &vn, sizeof (struct vnode))) { 345 dprintf(stderr, "can't read vnode at %x for pid %d\n", 346 vp, Pid); 347 return; 348 } 349 if (vn.v_type == VNON || vn.v_tag == VT_NON) 350 badtype = "none"; 351 else if (vn.v_type == VBAD) 352 badtype = "bad"; 353 else 354 switch (vn.v_tag) { 355 case VT_UFS: 356 ufs_filestat(&vn, &fst); 357 break; 358 case VT_MFS: 359 ufs_filestat(&vn, &fst); 360 break; 361 case VT_NFS: 362 nfs_filestat(&vn, &fst); 363 break; 364 default: { 365 static char unknown[10]; 366 sprintf(badtype = unknown, "?(%x)", vn.v_tag); 367 break;; 368 } 369 } 370 if (checkfile) { 371 int fsmatch = 0; 372 register DEVS *d; 373 374 if (badtype) 375 return; 376 for (d = devs; d != NULL; d = d->next) 377 if (d->fsid == fst.fsid) { 378 fsmatch = 1; 379 if (d->ino == fst.fileid) { 380 filename = d->name; 381 break; 382 } 383 } 384 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 385 return; 386 } 387 PREFIX(i); 388 if (badtype) { 389 (void)printf(" - - %10s -\n", badtype); 390 return; 391 } 392 if (nflg) 393 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 394 else 395 (void)printf(" %-8s", getmnton(vn.v_mount)); 396 if (nflg) 397 (void)sprintf(mode, "%o", fst.mode); 398 else 399 strmode(fst.mode, mode); 400 (void)printf(" %6d %10s", fst.fileid, mode); 401 switch (vn.v_type) { 402 case VBLK: 403 case VCHR: { 404 char *name; 405 406 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 407 S_IFCHR : S_IFBLK)) == NULL)) 408 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 409 else 410 printf(" %6s", name); 411 break; 412 } 413 default: 414 printf(" %6d", fst.size); 415 } 416 if (filename && !fsflg) 417 printf(" %s", filename); 418 419 putchar('\n'); 420 } 421 422 ufs_filestat(vp, fsp) 423 struct vnode *vp; 424 struct filestat *fsp; 425 { 426 struct inode *ip = VTOI(vp); 427 428 fsp->fsid = ip->i_dev & 0xffff; 429 fsp->fileid = (long)ip->i_number; 430 fsp->mode = (mode_t)ip->i_mode; 431 fsp->size = (u_long)ip->i_size; 432 fsp->rdev = ip->i_rdev; 433 } 434 435 nfs_filestat(vp, fsp) 436 struct vnode *vp; 437 struct filestat *fsp; 438 { 439 register struct nfsnode *np = VTONFS(vp); 440 register mode_t mode; 441 442 fsp->fsid = np->n_vattr.va_fsid; 443 fsp->fileid = np->n_vattr.va_fileid; 444 fsp->size = np->n_size; 445 fsp->rdev = np->n_vattr.va_rdev; 446 mode = (mode_t)np->n_vattr.va_mode; 447 switch (vp->v_type) { 448 case VREG: 449 mode |= S_IFREG; 450 break; 451 case VDIR: 452 mode |= S_IFDIR; 453 break; 454 case VBLK: 455 mode |= S_IFBLK; 456 break; 457 case VCHR: 458 mode |= S_IFCHR; 459 break; 460 case VLNK: 461 mode |= S_IFLNK; 462 break; 463 case VSOCK: 464 mode |= S_IFSOCK; 465 break; 466 case VFIFO: 467 mode |= S_IFIFO; 468 break; 469 }; 470 fsp->mode = mode; 471 } 472 473 474 char * 475 getmnton(m) 476 struct mount *m; 477 { 478 static struct mount mount; 479 static struct mtab { 480 struct mtab *next; 481 struct mount *m; 482 char mntonname[MNAMELEN]; 483 } *mhead = NULL; 484 register struct mtab *mt; 485 486 for (mt = mhead; mt != NULL; mt = mt->next) 487 if (m == mt->m) 488 return (mt->mntonname); 489 if (!KVM_READ((off_t)m, &mount, sizeof(struct mount))) { 490 fprintf(stderr, "can't read mount table at %x\n", m); 491 return (NULL); 492 } 493 if ((mt = (struct mtab *)malloc(sizeof (struct mtab))) == NULL) { 494 fprintf(stderr, "out of memory\n"); 495 exit(1); 496 } 497 mt->m = m; 498 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 499 mt->next = mhead; 500 mhead = mt; 501 return (mt->mntonname); 502 } 503 504 socktrans(sock, i) 505 struct socket *sock; 506 { 507 static char *stypename[] = { 508 "unused", /* 0 */ 509 "stream", /* 1 */ 510 "dgram", /* 2 */ 511 "raw", /* 3 */ 512 "rdm", /* 4 */ 513 "seqpak" /* 5 */ 514 }; 515 #define STYPEMAX 5 516 struct socket so; 517 struct protosw proto; 518 struct domain dom; 519 struct inpcb inpcb; 520 struct unpcb unpcb; 521 int len; 522 char dname[32], *strcpy(); 523 524 PREFIX(i); 525 526 /* fill in socket */ 527 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 528 dprintf(stderr, "can't read sock at %x\n", sock); 529 goto bad; 530 } 531 532 /* fill in protosw entry */ 533 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 534 dprintf(stderr, "can't read protosw at %x", so.so_proto); 535 goto bad; 536 } 537 538 /* fill in domain */ 539 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 540 dprintf(stderr, "can't read domain at %x\n", proto.pr_domain); 541 goto bad; 542 } 543 544 if ((len = kvm_read((off_t)dom.dom_name, dname, sizeof(dname) - 1)) < 0) { 545 dprintf(stderr, "can't read domain name at %x\n", 546 dom.dom_name); 547 dname[0] = '\0'; 548 } 549 else 550 dname[len] = '\0'; 551 552 if ((u_short)so.so_type > STYPEMAX) 553 printf("* %s ?%d", dname, so.so_type); 554 else 555 printf("* %s %s", dname, stypename[so.so_type]); 556 557 /* 558 * protocol specific formatting 559 * 560 * Try to find interesting things to print. For tcp, the interesting 561 * thing is the address of the tcpcb, for udp and others, just the 562 * inpcb (socket pcb). For unix domain, its the address of the socket 563 * pcb and the address of the connected pcb (if connected). Otherwise 564 * just print the protocol number and address of the socket itself. 565 * The idea is not to duplicate netstat, but to make available enough 566 * information for further analysis. 567 */ 568 switch(dom.dom_family) { 569 case AF_INET: 570 getinetproto(proto.pr_protocol); 571 if (proto.pr_protocol == IPPROTO_TCP ) { 572 if (so.so_pcb) { 573 if (kvm_read((off_t)so.so_pcb, (char *)&inpcb, sizeof(struct inpcb)) 574 != sizeof(struct inpcb)){ 575 dprintf(stderr, 576 "can't read inpcb at %x\n", so.so_pcb); 577 goto bad; 578 } 579 printf(" %x", (int)inpcb.inp_ppcb); 580 } 581 } 582 else if (so.so_pcb) 583 printf(" %x", (int)so.so_pcb); 584 break; 585 case AF_UNIX: 586 /* print address of pcb and connected pcb */ 587 if (so.so_pcb) { 588 printf(" %x", (int)so.so_pcb); 589 if (kvm_read((off_t)so.so_pcb, (char *)&unpcb, sizeof(struct unpcb)) 590 != sizeof(struct unpcb)){ 591 dprintf(stderr, "can't read unpcb at %x\n", 592 so.so_pcb); 593 goto bad; 594 } 595 if (unpcb.unp_conn) { 596 char shoconn[4], *cp; 597 598 cp = shoconn; 599 if (!(so.so_state & SS_CANTRCVMORE)) 600 *cp++ = '<'; 601 *cp++ = '-'; 602 if (!(so.so_state & SS_CANTSENDMORE)) 603 *cp++ = '>'; 604 *cp = '\0'; 605 printf(" %s %x", shoconn, 606 (int)unpcb.unp_conn); 607 } 608 } 609 break; 610 default: 611 /* print protocol number and socket address */ 612 printf(" %d %x", proto.pr_protocol, (int)sock); 613 } 614 printf("\n"); 615 return; 616 bad: 617 printf("* error\n"); 618 } 619 620 /* 621 * getinetproto -- 622 * print name of protocol number 623 */ 624 getinetproto(number) 625 int number; 626 { 627 char *cp; 628 629 switch(number) { 630 case IPPROTO_IP: 631 cp = "ip"; break; 632 case IPPROTO_ICMP: 633 cp ="icmp"; break; 634 case IPPROTO_GGP: 635 cp ="ggp"; break; 636 case IPPROTO_TCP: 637 cp ="tcp"; break; 638 case IPPROTO_EGP: 639 cp ="egp"; break; 640 case IPPROTO_PUP: 641 cp ="pup"; break; 642 case IPPROTO_UDP: 643 cp ="udp"; break; 644 case IPPROTO_IDP: 645 cp ="idp"; break; 646 case IPPROTO_RAW: 647 cp ="raw"; break; 648 default: 649 printf(" %d", number); 650 return; 651 } 652 printf(" %s", cp); 653 } 654 655 getfname(filename) 656 char *filename; 657 { 658 struct stat statbuf; 659 DEVS *cur; 660 char *malloc(); 661 662 if (stat(filename, &statbuf)) { 663 fprintf(stderr, "fstat: %s: %s\n", strerror(errno), 664 filename); 665 return(0); 666 } 667 if ((cur = (DEVS *)malloc(sizeof(DEVS))) == NULL) { 668 fprintf(stderr, "fstat: out of space.\n"); 669 exit(1); 670 } 671 cur->next = devs; 672 devs = cur; 673 674 cur->ino = statbuf.st_ino; 675 cur->fsid = statbuf.st_dev & 0xffff; 676 cur->name = filename; 677 return(1); 678 } 679 680 usage() 681 { 682 (void)fprintf(stderr, 683 "usage: fstat [-fnv] [-p pid] [-u user] [filename ...]\n"); 684 exit(1); 685 } 686