fstat.c revision 1.1
1 /*- 2 * Copyright (c) 1988 The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 char copyright[] = 36 "@(#) Copyright (c) 1988 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)fstat.c 5.32 (Berkeley) 6/17/91"; 42 #endif /* not lint */ 43 44 /* 45 * fstat 46 */ 47 #include <sys/param.h> 48 #include <sys/time.h> 49 #include <sys/proc.h> 50 #include <sys/user.h> 51 #ifdef SPPWAIT 52 #define NEWVM 53 #endif 54 #ifndef NEWVM 55 #include <machine/pte.h> 56 #include <sys/vmmac.h> 57 #endif 58 #include <sys/stat.h> 59 #include <sys/vnode.h> 60 #include <sys/socket.h> 61 #include <sys/socketvar.h> 62 #include <sys/domain.h> 63 #include <sys/protosw.h> 64 #include <sys/unpcb.h> 65 #include <sys/kinfo.h> 66 #include <sys/filedesc.h> 67 #define KERNEL 68 #define NFS 69 #include <sys/file.h> 70 #include <sys/mount.h> 71 #include <ufs/quota.h> 72 #include <ufs/inode.h> 73 #include <nfs/nfsv2.h> 74 #include <nfs/nfs.h> 75 #include <nfs/nfsnode.h> 76 #undef KERNEL 77 78 #include <net/route.h> 79 #include <netinet/in.h> 80 #include <netinet/in_systm.h> 81 #include <netinet/ip.h> 82 #include <netinet/in_pcb.h> 83 84 #include <errno.h> 85 #include <nlist.h> 86 #include <kvm.h> 87 #include <pwd.h> 88 #include <stdio.h> 89 #include <paths.h> 90 #include <ctype.h> 91 #include <stdlib.h> 92 #include <string.h> 93 94 #define TEXT -1 95 #define CDIR -2 96 #define RDIR -3 97 #define TRACE -4 98 99 typedef struct devs { 100 struct devs *next; 101 long fsid; 102 ino_t ino; 103 char *name; 104 } DEVS; 105 DEVS *devs; 106 107 struct filestat { 108 long fsid; 109 long fileid; 110 mode_t mode; 111 u_long size; 112 dev_t rdev; 113 }; 114 115 #ifdef notdef 116 struct nlist nl[] = { 117 { "" }, 118 }; 119 #endif 120 121 int fsflg, /* show files on same filesystem as file(s) argument */ 122 pflg, /* show files open by a particular pid */ 123 uflg; /* show files open by a particular (effective) user */ 124 int checkfile; /* true if restricting to particular files or filesystems */ 125 int nflg; /* (numerical) display f.s. and rdev as dev_t */ 126 int vflg; /* display errors in locating kernel data objects etc... */ 127 128 #define dprintf if (vflg) fprintf 129 130 struct file **ofiles; /* buffer of pointers to file structures */ 131 int maxfiles; 132 #define ALLOC_OFILES(d) \ 133 if ((d) > maxfiles) { \ 134 free(ofiles); \ 135 ofiles = malloc((d) * sizeof(struct file *)); \ 136 if (ofiles == NULL) { \ 137 fprintf(stderr, "fstat: %s\n", strerror(errno)); \ 138 exit(1); \ 139 } \ 140 maxfiles = (d); \ 141 } 142 143 /* 144 * a kvm_read that returns true if everything is read 145 */ 146 #define KVM_READ(kaddr, paddr, len) (kvm_read((kaddr), (paddr), (len)) == (len)) 147 148 void dofiles(), getinetproto(), socktrans(), nfs_filestat(), ufs_filestat(); 149 void usage(), vtrans(); 150 151 main(argc, argv) 152 int argc; 153 char **argv; 154 { 155 extern char *optarg; 156 extern int optind; 157 register struct passwd *passwd; 158 struct proc *p; 159 int arg, ch, what; 160 char *namelist = NULL, *memfile = NULL; 161 162 arg = 0; 163 what = KINFO_PROC_ALL; 164 while ((ch = getopt(argc, argv, "fnp:u:vNM")) != EOF) 165 switch((char)ch) { 166 case 'f': 167 fsflg = 1; 168 break; 169 case 'n': 170 nflg = 1; 171 break; 172 case 'p': 173 if (pflg++) 174 usage(); 175 if (!isdigit(*optarg)) { 176 fprintf(stderr, 177 "fstat: -p requires a process id\n"); 178 usage(); 179 } 180 what = KINFO_PROC_PID; 181 arg = atoi(optarg); 182 break; 183 case 'u': 184 if (uflg++) 185 usage(); 186 if (!(passwd = getpwnam(optarg))) { 187 fprintf(stderr, "%s: unknown uid\n", 188 optarg); 189 exit(1); 190 } 191 what = KINFO_PROC_UID; 192 arg = passwd->pw_uid; 193 break; 194 case 'v': 195 vflg = 1; 196 break; 197 case 'N': 198 namelist = optarg; 199 break; 200 case 'M': 201 memfile = optarg; 202 break; 203 case '?': 204 default: 205 usage(); 206 } 207 208 if (*(argv += optind)) { 209 for (; *argv; ++argv) { 210 if (getfname(*argv)) 211 checkfile = 1; 212 } 213 if (!checkfile) /* file(s) specified, but none accessable */ 214 exit(1); 215 } 216 217 ALLOC_OFILES(256); /* reserve space for file pointers */ 218 219 if (fsflg && !checkfile) { 220 /* -f with no files means use wd */ 221 if (getfname(".") == 0) 222 exit(1); 223 checkfile = 1; 224 } 225 226 if (kvm_openfiles(namelist, memfile, NULL) == -1) { 227 fprintf(stderr, "fstat: %s\n", kvm_geterr()); 228 exit(1); 229 } 230 #ifdef notdef 231 if (kvm_nlist(nl) != 0) { 232 fprintf(stderr, "fstat: no namelist: %s\n", kvm_geterr()); 233 exit(1); 234 } 235 #endif 236 if (kvm_getprocs(what, arg) == -1) { 237 fprintf(stderr, "fstat: %s\n", kvm_geterr()); 238 exit(1); 239 } 240 if (nflg) 241 printf("%s", 242 "USER CMD PID FD DEV INUM MODE SZ|DV"); 243 else 244 printf("%s", 245 "USER CMD PID FD MOUNT INUM MODE SZ|DV"); 246 if (checkfile && fsflg == 0) 247 printf(" NAME\n"); 248 else 249 putchar('\n'); 250 251 while ((p = kvm_nextproc()) != NULL) { 252 if (p->p_stat == SZOMB) 253 continue; 254 dofiles(p); 255 } 256 exit(0); 257 } 258 259 char *Uname, *Comm; 260 int Pid; 261 262 #define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ 263 switch(i) { \ 264 case TEXT: \ 265 printf(" text"); \ 266 break; \ 267 case CDIR: \ 268 printf(" wd"); \ 269 break; \ 270 case RDIR: \ 271 printf(" root"); \ 272 break; \ 273 case TRACE: \ 274 printf(" tr"); \ 275 break; \ 276 default: \ 277 printf(" %4d", i); \ 278 break; \ 279 } 280 281 /* 282 * print open files attributed to this process 283 */ 284 void 285 dofiles(p) 286 struct proc *p; 287 { 288 int i, last; 289 struct file file; 290 #ifdef NEWVM 291 struct filedesc0 filed0; 292 #define filed filed0.fd_fd 293 struct eproc *ep; 294 #else 295 struct filedesc filed; 296 #endif 297 298 extern char *user_from_uid(); 299 #ifndef NEWVM 300 struct vnode *xvptr; 301 #endif 302 303 #ifdef NEWVM 304 ep = kvm_geteproc(p); 305 Uname = user_from_uid(ep->e_ucred.cr_uid, 0); 306 #else 307 Uname = user_from_uid(p->p_uid, 0); 308 #endif 309 Pid = p->p_pid; 310 Comm = p->p_comm; 311 312 if (p->p_fd == NULL) 313 return; 314 #ifdef NEWVM 315 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) { 316 dprintf(stderr, "can't read filedesc at %x for pid %d\n", 317 p->p_fd, Pid); 318 return; 319 } 320 #else 321 if (!KVM_READ(p->p_fd, &filed, sizeof (filed))) { 322 dprintf(stderr, "can't read filedesc at %x for pid %d\n", 323 p->p_fd, Pid); 324 return; 325 } 326 #endif 327 /* 328 * root directory vnode, if one 329 */ 330 if (filed.fd_rdir) 331 vtrans(filed.fd_rdir, RDIR); 332 #ifndef NEWVM 333 /* 334 * text vnode 335 */ 336 if (p->p_textp && 337 KVM_READ(&(p->p_textp->x_vptr), &xvptr, sizeof (struct vnode *)) && 338 xvptr != NULL) 339 vtrans(xvptr, TEXT); 340 #endif 341 /* 342 * current working directory vnode 343 */ 344 vtrans(filed.fd_cdir, CDIR); 345 /* 346 * ktrace vnode, if one 347 */ 348 if (p->p_tracep) 349 vtrans(p->p_tracep, TRACE); 350 /* 351 * open files 352 */ 353 #define FPSIZE (sizeof (struct file *)) 354 ALLOC_OFILES(filed.fd_lastfile); 355 #ifdef NEWVM 356 if (filed.fd_nfiles > NDFILE) { 357 if (!KVM_READ(filed.fd_ofiles, ofiles, 358 filed.fd_lastfile * FPSIZE)) { 359 dprintf(stderr, 360 "can't read file structures at %x for pid %d\n", 361 filed.fd_ofiles, Pid); 362 return; 363 } 364 } else 365 bcopy(filed0.fd_dfiles, ofiles, filed.fd_lastfile * FPSIZE); 366 #else 367 bcopy(filed.fd_ofile, ofiles, MIN(filed.fd_lastfile, NDFILE) * FPSIZE); 368 last = filed.fd_lastfile; 369 if ((last > NDFILE) && !KVM_READ(filed.fd_moreofiles, &ofiles[NDFILE], 370 (last - NDFILE) * FPSIZE)) { 371 dprintf(stderr, "can't read rest of files at %x for pid %d\n", 372 filed.fd_moreofiles, Pid); 373 return; 374 } 375 #endif 376 for (i = 0; i <= filed.fd_lastfile; i++) { 377 if (ofiles[i] == NULL) 378 continue; 379 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) { 380 dprintf(stderr, "can't read file %d at %x for pid %d\n", 381 i, ofiles[i], Pid); 382 continue; 383 } 384 if (file.f_type == DTYPE_VNODE) 385 vtrans((struct vnode *)file.f_data, i); 386 else if (file.f_type == DTYPE_SOCKET && checkfile == 0) 387 socktrans((struct socket *)file.f_data, i); 388 else { 389 dprintf(stderr, 390 "unknown file type %d for file %d of pid %d\n", 391 file.f_type, i, Pid); 392 } 393 } 394 } 395 396 void 397 vtrans(vp, i) 398 struct vnode *vp; 399 int i; 400 { 401 extern char *devname(); 402 struct vnode vn; 403 struct filestat fst; 404 char mode[15]; 405 char *badtype, *filename, *getmnton(); 406 407 filename = badtype = NULL; 408 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) { 409 dprintf(stderr, "can't read vnode at %x for pid %d\n", 410 vp, Pid); 411 return; 412 } 413 if (vn.v_type == VNON || vn.v_tag == VT_NON) 414 badtype = "none"; 415 else if (vn.v_type == VBAD) 416 badtype = "bad"; 417 else 418 switch (vn.v_tag) { 419 case VT_UFS: 420 ufs_filestat(&vn, &fst); 421 break; 422 case VT_MFS: 423 ufs_filestat(&vn, &fst); 424 break; 425 case VT_NFS: 426 nfs_filestat(&vn, &fst); 427 break; 428 default: { 429 static char unknown[10]; 430 sprintf(badtype = unknown, "?(%x)", vn.v_tag); 431 break;; 432 } 433 } 434 if (checkfile) { 435 int fsmatch = 0; 436 register DEVS *d; 437 438 if (badtype) 439 return; 440 for (d = devs; d != NULL; d = d->next) 441 if (d->fsid == fst.fsid) { 442 fsmatch = 1; 443 if (d->ino == fst.fileid) { 444 filename = d->name; 445 break; 446 } 447 } 448 if (fsmatch == 0 || (filename == NULL && fsflg == 0)) 449 return; 450 } 451 PREFIX(i); 452 if (badtype) { 453 (void)printf(" - - %10s -\n", badtype); 454 return; 455 } 456 if (nflg) 457 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid)); 458 else 459 (void)printf(" %-8s", getmnton(vn.v_mount)); 460 if (nflg) 461 (void)sprintf(mode, "%o", fst.mode); 462 else 463 strmode(fst.mode, mode); 464 (void)printf(" %6d %10s", fst.fileid, mode); 465 switch (vn.v_type) { 466 case VBLK: 467 case VCHR: { 468 char *name; 469 470 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ? 471 S_IFCHR : S_IFBLK)) == NULL)) 472 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev)); 473 else 474 printf(" %6s", name); 475 break; 476 } 477 default: 478 printf(" %6d", fst.size); 479 } 480 if (filename && !fsflg) 481 printf(" %s", filename); 482 483 putchar('\n'); 484 } 485 486 void 487 ufs_filestat(vp, fsp) 488 struct vnode *vp; 489 struct filestat *fsp; 490 { 491 struct inode *ip = VTOI(vp); 492 493 fsp->fsid = ip->i_dev & 0xffff; 494 fsp->fileid = (long)ip->i_number; 495 fsp->mode = (mode_t)ip->i_mode; 496 fsp->size = (u_long)ip->i_size; 497 fsp->rdev = ip->i_rdev; 498 } 499 500 void 501 nfs_filestat(vp, fsp) 502 struct vnode *vp; 503 struct filestat *fsp; 504 { 505 register struct nfsnode *np = VTONFS(vp); 506 register mode_t mode; 507 508 fsp->fsid = np->n_vattr.va_fsid; 509 fsp->fileid = np->n_vattr.va_fileid; 510 fsp->size = np->n_size; 511 fsp->rdev = np->n_vattr.va_rdev; 512 mode = (mode_t)np->n_vattr.va_mode; 513 switch (vp->v_type) { 514 case VREG: 515 mode |= S_IFREG; 516 break; 517 case VDIR: 518 mode |= S_IFDIR; 519 break; 520 case VBLK: 521 mode |= S_IFBLK; 522 break; 523 case VCHR: 524 mode |= S_IFCHR; 525 break; 526 case VLNK: 527 mode |= S_IFLNK; 528 break; 529 case VSOCK: 530 mode |= S_IFSOCK; 531 break; 532 case VFIFO: 533 mode |= S_IFIFO; 534 break; 535 }; 536 fsp->mode = mode; 537 } 538 539 540 char * 541 getmnton(m) 542 struct mount *m; 543 { 544 static struct mount mount; 545 static struct mtab { 546 struct mtab *next; 547 struct mount *m; 548 char mntonname[MNAMELEN]; 549 } *mhead = NULL; 550 register struct mtab *mt; 551 552 for (mt = mhead; mt != NULL; mt = mt->next) 553 if (m == mt->m) 554 return (mt->mntonname); 555 if (!KVM_READ(m, &mount, sizeof(struct mount))) { 556 fprintf(stderr, "can't read mount table at %x\n", m); 557 return (NULL); 558 } 559 if ((mt = malloc(sizeof (struct mtab))) == NULL) { 560 fprintf(stderr, "fstat: %s\n", strerror(errno)); 561 exit(1); 562 } 563 mt->m = m; 564 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); 565 mt->next = mhead; 566 mhead = mt; 567 return (mt->mntonname); 568 } 569 570 void 571 socktrans(sock, i) 572 struct socket *sock; 573 int i; 574 { 575 static char *stypename[] = { 576 "unused", /* 0 */ 577 "stream", /* 1 */ 578 "dgram", /* 2 */ 579 "raw", /* 3 */ 580 "rdm", /* 4 */ 581 "seqpak" /* 5 */ 582 }; 583 #define STYPEMAX 5 584 struct socket so; 585 struct protosw proto; 586 struct domain dom; 587 struct inpcb inpcb; 588 struct unpcb unpcb; 589 int len; 590 char dname[32], *strcpy(); 591 592 PREFIX(i); 593 594 /* fill in socket */ 595 if (!KVM_READ(sock, &so, sizeof(struct socket))) { 596 dprintf(stderr, "can't read sock at %x\n", sock); 597 goto bad; 598 } 599 600 /* fill in protosw entry */ 601 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { 602 dprintf(stderr, "can't read protosw at %x", so.so_proto); 603 goto bad; 604 } 605 606 /* fill in domain */ 607 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { 608 dprintf(stderr, "can't read domain at %x\n", proto.pr_domain); 609 goto bad; 610 } 611 612 if ((len = 613 kvm_read(dom.dom_name, dname, sizeof(dname) - 1)) < 0) { 614 dprintf(stderr, "can't read domain name at %x\n", 615 dom.dom_name); 616 dname[0] = '\0'; 617 } 618 else 619 dname[len] = '\0'; 620 621 if ((u_short)so.so_type > STYPEMAX) 622 printf("* %s ?%d", dname, so.so_type); 623 else 624 printf("* %s %s", dname, stypename[so.so_type]); 625 626 /* 627 * protocol specific formatting 628 * 629 * Try to find interesting things to print. For tcp, the interesting 630 * thing is the address of the tcpcb, for udp and others, just the 631 * inpcb (socket pcb). For unix domain, its the address of the socket 632 * pcb and the address of the connected pcb (if connected). Otherwise 633 * just print the protocol number and address of the socket itself. 634 * The idea is not to duplicate netstat, but to make available enough 635 * information for further analysis. 636 */ 637 switch(dom.dom_family) { 638 case AF_INET: 639 getinetproto(proto.pr_protocol); 640 if (proto.pr_protocol == IPPROTO_TCP ) { 641 if (so.so_pcb) { 642 if (kvm_read(so.so_pcb, &inpcb, 643 sizeof(struct inpcb)) 644 != sizeof(struct inpcb)) { 645 dprintf(stderr, 646 "can't read inpcb at %x\n", 647 so.so_pcb); 648 goto bad; 649 } 650 printf(" %x", (int)inpcb.inp_ppcb); 651 } 652 } 653 else if (so.so_pcb) 654 printf(" %x", (int)so.so_pcb); 655 break; 656 case AF_UNIX: 657 /* print address of pcb and connected pcb */ 658 if (so.so_pcb) { 659 printf(" %x", (int)so.so_pcb); 660 if (kvm_read(so.so_pcb, &unpcb, 661 sizeof(struct unpcb)) != sizeof(struct unpcb)){ 662 dprintf(stderr, "can't read unpcb at %x\n", 663 so.so_pcb); 664 goto bad; 665 } 666 if (unpcb.unp_conn) { 667 char shoconn[4], *cp; 668 669 cp = shoconn; 670 if (!(so.so_state & SS_CANTRCVMORE)) 671 *cp++ = '<'; 672 *cp++ = '-'; 673 if (!(so.so_state & SS_CANTSENDMORE)) 674 *cp++ = '>'; 675 *cp = '\0'; 676 printf(" %s %x", shoconn, 677 (int)unpcb.unp_conn); 678 } 679 } 680 break; 681 default: 682 /* print protocol number and socket address */ 683 printf(" %d %x", proto.pr_protocol, (int)sock); 684 } 685 printf("\n"); 686 return; 687 bad: 688 printf("* error\n"); 689 } 690 691 /* 692 * getinetproto -- 693 * print name of protocol number 694 */ 695 void 696 getinetproto(number) 697 int number; 698 { 699 char *cp; 700 701 switch(number) { 702 case IPPROTO_IP: 703 cp = "ip"; break; 704 case IPPROTO_ICMP: 705 cp ="icmp"; break; 706 case IPPROTO_GGP: 707 cp ="ggp"; break; 708 case IPPROTO_TCP: 709 cp ="tcp"; break; 710 case IPPROTO_EGP: 711 cp ="egp"; break; 712 case IPPROTO_PUP: 713 cp ="pup"; break; 714 case IPPROTO_UDP: 715 cp ="udp"; break; 716 case IPPROTO_IDP: 717 cp ="idp"; break; 718 case IPPROTO_RAW: 719 cp ="raw"; break; 720 default: 721 printf(" %d", number); 722 return; 723 } 724 printf(" %s", cp); 725 } 726 727 getfname(filename) 728 char *filename; 729 { 730 struct stat statbuf; 731 DEVS *cur; 732 733 if (stat(filename, &statbuf)) { 734 fprintf(stderr, "fstat: %s: %s\n", strerror(errno), 735 filename); 736 return(0); 737 } 738 if ((cur = malloc(sizeof(DEVS))) == NULL) { 739 fprintf(stderr, "fstat: %s\n", strerror(errno)); 740 exit(1); 741 } 742 cur->next = devs; 743 devs = cur; 744 745 cur->ino = statbuf.st_ino; 746 cur->fsid = statbuf.st_dev & 0xffff; 747 cur->name = filename; 748 return(1); 749 } 750 751 void 752 usage() 753 { 754 (void)fprintf(stderr, 755 "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n"); 756 exit(1); 757 } 758
Indexes created Sat Sep 20 22:09:52 GMT 2025