1/*-
2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. 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
35static char copyright[] =
36"@(#) Copyright (c) 1988, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)fstat.c 8.1 (Berkeley) 6/6/93";
42#endif /* not lint */
43
44#include <sys/param.h>
45#include <sys/time.h>
46#include <sys/proc.h>
47#include <sys/user.h>
48#include <sys/stat.h>
49#include <sys/vnode.h>
50#include <sys/socket.h>
51#include <sys/socketvar.h>
52#include <sys/domain.h>
53#include <sys/protosw.h>
54#include <sys/unpcb.h>
55#include <sys/sysctl.h>
56#include <sys/filedesc.h>
57#include <sys/queue.h>
58#define KERNEL
59#include <sys/file.h>
60#include <ufs/ufs/quota.h>
61#include <ufs/ufs/inode.h>
62#undef KERNEL
63#define NFS
64#include <sys/mount.h>
65#include <nfs/nfsproto.h>
66#include <nfs/rpcv2.h>
67#include <nfs/nfs.h>
68#include <nfs/nfsnode.h>
69#undef NFS
70
71#include <net/route.h>
72#include <netinet/in.h>
73#include <netinet/in_systm.h>
74#include <netinet/ip.h>
75#include <netinet/in_pcb.h>
76
77#include <ctype.h>
78#include <errno.h>
79#include <kvm.h>
80#include <nlist.h>
81#include <paths.h>
82#include <pwd.h>
83#include <stdio.h>
84#include <stdlib.h>
85#include <string.h>
86
87#define TEXT -1
88#define CDIR -2
89#define RDIR -3
90#define TRACE -4
91
92typedef struct devs {
93 struct devs *next;
94 long fsid;
95 ino_t ino;
96 char *name;
97} DEVS;
98DEVS *devs;
99
100struct filestat {
101 long fsid;
102 long fileid;
103 mode_t mode;
104 u_long size;
105 dev_t rdev;
106};
107
108#ifdef notdef
109struct nlist nl[] = {
110 { "" },
111};
112#endif
113
114int fsflg, /* show files on same filesystem as file(s) argument */
115 pflg, /* show files open by a particular pid */
116 uflg; /* show files open by a particular (effective) user */
117int checkfile; /* true if restricting to particular files or filesystems */
118int nflg; /* (numerical) display f.s. and rdev as dev_t */
119int vflg; /* display errors in locating kernel data objects etc... */
120
121#define dprintf if (vflg) fprintf
122
123struct file **ofiles; /* buffer of pointers to file structures */
124int maxfiles;
125#define ALLOC_OFILES(d) \
126 if ((d) > maxfiles) { \
127 free(ofiles); \
128 ofiles = malloc((d) * sizeof(struct file *)); \
129 if (ofiles == NULL) { \
130 fprintf(stderr, "fstat: %s\n", strerror(errno)); \
131 exit(1); \
132 } \
133 maxfiles = (d); \
134 }
135
136/*
137 * a kvm_read that returns true if everything is read
138 */
139#define KVM_READ(kaddr, paddr, len) \
140 (kvm_read(kd, (u_long)(kaddr), (char *)(paddr), (len)) == (len))
141
142kvm_t *kd;
143
144int ufs_filestat(), nfs_filestat();
145void dofiles(), getinetproto(), socktrans();
146void usage(), vtrans();
147
148main(argc, argv)
149 int argc;
150 char **argv;
151{
152 extern char *optarg;
153 extern int optind;
154 register struct passwd *passwd;
155 struct kinfo_proc *p, *plast;
156 int arg, ch, what;
157 char *memf, *nlistf;
158 int cnt;
159
160 arg = 0;
161 what = KERN_PROC_ALL;
162 nlistf = memf = NULL;
163 while ((ch = getopt(argc, argv, "fnp:u:vNM")) != EOF)
164 switch((char)ch) {
165 case 'f':
166 fsflg = 1;
167 break;
168 case 'M':
169 memf = optarg;
170 break;
171 case 'N':
172 nlistf = optarg;
173 break;
174 case 'n':
175 nflg = 1;
176 break;
177 case 'p':
178 if (pflg++)
179 usage();
180 if (!isdigit(*optarg)) {
181 fprintf(stderr,
182 "fstat: -p requires a process id\n");
183 usage();
184 }
185 what = KERN_PROC_PID;
186 arg = atoi(optarg);
187 break;
188 case 'u':
189 if (uflg++)
190 usage();
191 if (!(passwd = getpwnam(optarg))) {
192 fprintf(stderr, "%s: unknown uid\n",
193 optarg);
194 exit(1);
195 }
196 what = KERN_PROC_UID;
197 arg = passwd->pw_uid;
198 break;
199 case 'v':
200 vflg = 1;
201 break;
202 case '?':
203 default:
204 usage();
205 }
206
207 if (*(argv += optind)) {
208 for (; *argv; ++argv) {
209 if (getfname(*argv))
210 checkfile = 1;
211 }
212 if (!checkfile) /* file(s) specified, but none accessable */
213 exit(1);
214 }
215
216 ALLOC_OFILES(256); /* reserve space for file pointers */
217
218 if (fsflg && !checkfile) {
219 /* -f with no files means use wd */
220 if (getfname(".") == 0)
221 exit(1);
222 checkfile = 1;
223 }
224
225 /*
226 * Discard setgid privileges if not the running kernel so that bad
227 * guys can't print interesting stuff from kernel memory.
228 */
229 if (nlistf != NULL || memf != NULL)
230 setgid(getgid());
231
232 if ((kd = kvm_open(nlistf, memf, NULL, O_RDONLY, NULL)) == NULL) {
233 fprintf(stderr, "fstat: %s\n", kvm_geterr(kd));
234 exit(1);
235 }
236#ifdef notdef
237 if (kvm_nlist(kd, nl) != 0) {
238 fprintf(stderr, "fstat: no namelist: %s\n", kvm_geterr(kd));
239 exit(1);
240 }
241#endif
242 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) {
243 fprintf(stderr, "fstat: %s\n", kvm_geterr(kd));
244 exit(1);
245 }
246 if (nflg)
247 printf("%s",
248"USER CMD PID FD DEV INUM MODE SZ|DV R/W");
249 else
250 printf("%s",
251"USER CMD PID FD MOUNT INUM MODE SZ|DV R/W");
252 if (checkfile && fsflg == 0)
253 printf(" NAME\n");
254 else
255 putchar('\n');
256
257 for (plast = &p[cnt]; p < plast; ++p) {
258 if (p->kp_proc.p_stat == SZOMB)
259 continue;
260 dofiles(p);
261 }
262 exit(0);
263}
264
265char *Uname, *Comm;
266int Pid;
267
268#define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \
269 switch(i) { \
270 case TEXT: \
271 printf(" text"); \
272 break; \
273 case CDIR: \
274 printf(" wd"); \
275 break; \
276 case RDIR: \
277 printf(" root"); \
278 break; \
279 case TRACE: \
280 printf(" tr"); \
281 break; \
282 default: \
283 printf(" %4d", i); \
284 break; \
285 }
286
287/*
288 * print open files attributed to this process
289 */
290void
291dofiles(kp)
292 struct kinfo_proc *kp;
293{
294 int i, last;
295 struct file file;
296 struct filedesc0 filed0;
297#define filed filed0.fd_fd
298 struct proc *p = &kp->kp_proc;
299 struct eproc *ep = &kp->kp_eproc;
300
301 extern char *user_from_uid();
302
303 Uname = user_from_uid(ep->e_ucred.cr_uid, 0);
304 Pid = p->p_pid;
305 Comm = p->p_comm;
306
307 if (p->p_fd == NULL)
308 return;
309 if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) {
310 dprintf(stderr, "can't read filedesc at %x for pid %d\n",
311 p->p_fd, Pid);
312 return;
313 }
314 /*
315 * root directory vnode, if one
316 */
317 if (filed.fd_rdir)
318 vtrans(filed.fd_rdir, RDIR, FREAD);
319 /*
320 * current working directory vnode
321 */
322 vtrans(filed.fd_cdir, CDIR, FREAD);
323 /*
324 * ktrace vnode, if one
325 */
326 if (p->p_tracep)
327 vtrans(p->p_tracep, TRACE, FREAD|FWRITE);
328 /*
329 * open files
330 */
331#define FPSIZE (sizeof (struct file *))
332 ALLOC_OFILES(filed.fd_lastfile+1);
333 if (filed.fd_nfiles > NDFILE) {
334 if (!KVM_READ(filed.fd_ofiles, ofiles,
335 (filed.fd_lastfile+1) * FPSIZE)) {
336 dprintf(stderr,
337 "can't read file structures at %x for pid %d\n",
338 filed.fd_ofiles, Pid);
339 return;
340 }
341 } else
342 bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE);
343 for (i = 0; i <= filed.fd_lastfile; i++) {
344 if (ofiles[i] == NULL)
345 continue;
346 if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) {
347 dprintf(stderr, "can't read file %d at %x for pid %d\n",
348 i, ofiles[i], Pid);
349 continue;
350 }
351 if (file.f_type == DTYPE_VNODE)
352 vtrans((struct vnode *)file.f_data, i, file.f_flag);
353 else if (file.f_type == DTYPE_SOCKET) {
354 if (checkfile == 0)
355 socktrans((struct socket *)file.f_data, i);
356 }
357 else {
358 dprintf(stderr,
359 "unknown file type %d for file %d of pid %d\n",
360 file.f_type, i, Pid);
361 }
362 }
363}
364
365void
366vtrans(vp, i, flag)
367 struct vnode *vp;
368 int i;
369 int flag;
370{
371 struct vnode vn;
372 struct filestat fst;
373 char rw[3], mode[15];
374 char *badtype = NULL, *filename, *getmnton();
375
376 filename = badtype = NULL;
377 if (!KVM_READ(vp, &vn, sizeof (struct vnode))) {
378 dprintf(stderr, "can't read vnode at %x for pid %d\n",
379 vp, Pid);
380 return;
381 }
382 if (vn.v_type == VNON || vn.v_tag == VT_NON)
383 badtype = "none";
384 else if (vn.v_type == VBAD)
385 badtype = "bad";
386 else
387 switch (vn.v_tag) {
388 case VT_UFS:
389 if (!ufs_filestat(&vn, &fst))
390 badtype = "error";
391 break;
392 case VT_MFS:
393 if (!ufs_filestat(&vn, &fst))
394 badtype = "error";
395 break;
396 case VT_NFS:
397 if (!nfs_filestat(&vn, &fst))
398 badtype = "error";
399 break;
400 default: {
401 static char unknown[10];
402 sprintf(badtype = unknown, "?(%x)", vn.v_tag);
403 break;;
404 }
405 }
406 if (checkfile) {
407 int fsmatch = 0;
408 register DEVS *d;
409
410 if (badtype)
411 return;
412 for (d = devs; d != NULL; d = d->next)
413 if (d->fsid == fst.fsid) {
414 fsmatch = 1;
415 if (d->ino == fst.fileid) {
416 filename = d->name;
417 break;
418 }
419 }
420 if (fsmatch == 0 || (filename == NULL && fsflg == 0))
421 return;
422 }
423 PREFIX(i);
424 if (badtype) {
425 (void)printf(" - - %10s -\n", badtype);
426 return;
427 }
428 if (nflg)
429 (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid));
430 else
431 (void)printf(" %-8s", getmnton(vn.v_mount));
432 if (nflg)
433 (void)sprintf(mode, "%o", fst.mode);
434 else
435 strmode(fst.mode, mode);
436 (void)printf(" %6d %10s", fst.fileid, mode);
437 switch (vn.v_type) {
438 case VBLK:
439 case VCHR: {
440 char *name;
441
442 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ?
443 S_IFCHR : S_IFBLK)) == NULL))
444 printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev));
445 else
446 printf(" %6s", name);
447 break;
448 }
449 default:
450 printf(" %6d", fst.size);
451 }
452 rw[0] = '\0';
453 if (flag & FREAD)
454 strcat(rw, "r");
455 if (flag & FWRITE)
456 strcat(rw, "w");
457 printf(" %2s", rw);
458 if (filename && !fsflg)
459 printf(" %s", filename);
460 putchar('\n');
461}
462
463int
464ufs_filestat(vp, fsp)
465 struct vnode *vp;
466 struct filestat *fsp;
467{
468 struct inode inode;
469
470 if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) {
471 dprintf(stderr, "can't read inode at %x for pid %d\n",
472 VTOI(vp), Pid);
473 return 0;
474 }
475 fsp->fsid = inode.i_dev & 0xffff;
476 fsp->fileid = (long)inode.i_number;
477 fsp->mode = (mode_t)inode.i_mode;
478 fsp->size = (u_long)inode.i_size;
479 fsp->rdev = inode.i_rdev;
480
481 return 1;
482}
483
484int
485nfs_filestat(vp, fsp)
486 struct vnode *vp;
487 struct filestat *fsp;
488{
489 struct nfsnode nfsnode;
490 register mode_t mode;
491
492 if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) {
493 dprintf(stderr, "can't read nfsnode at %x for pid %d\n",
494 VTONFS(vp), Pid);
495 return 0;
496 }
497 fsp->fsid = nfsnode.n_vattr.va_fsid;
498 fsp->fileid = nfsnode.n_vattr.va_fileid;
499 fsp->size = nfsnode.n_size;
500 fsp->rdev = nfsnode.n_vattr.va_rdev;
501 mode = (mode_t)nfsnode.n_vattr.va_mode;
502 switch (vp->v_type) {
503 case VREG:
504 mode |= S_IFREG;
505 break;
506 case VDIR:
507 mode |= S_IFDIR;
508 break;
509 case VBLK:
510 mode |= S_IFBLK;
511 break;
512 case VCHR:
513 mode |= S_IFCHR;
514 break;
515 case VLNK:
516 mode |= S_IFLNK;
517 break;
518 case VSOCK:
519 mode |= S_IFSOCK;
520 break;
521 case VFIFO:
522 mode |= S_IFIFO;
523 break;
524 };
525 fsp->mode = mode;
526
527 return 1;
528}
529
530
531char *
532getmnton(m)
533 struct mount *m;
534{
535 static struct mount mount;
536 static struct mtab {
537 struct mtab *next;
538 struct mount *m;
539 char mntonname[MNAMELEN];
540 } *mhead = NULL;
541 register struct mtab *mt;
542
543 for (mt = mhead; mt != NULL; mt = mt->next)
544 if (m == mt->m)
545 return (mt->mntonname);
546 if (!KVM_READ(m, &mount, sizeof(struct mount))) {
547 fprintf(stderr, "can't read mount table at %x\n", m);
548 return (NULL);
549 }
550 if ((mt = malloc(sizeof (struct mtab))) == NULL) {
551 fprintf(stderr, "fstat: %s\n", strerror(errno));
552 exit(1);
553 }
554 mt->m = m;
555 bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN);
556 mt->next = mhead;
557 mhead = mt;
558 return (mt->mntonname);
559}
560
561void
562socktrans(sock, i)
563 struct socket *sock;
564 int i;
565{
566 static char *stypename[] = {
567 "unused", /* 0 */
568 "stream", /* 1 */
569 "dgram", /* 2 */
570 "raw", /* 3 */
571 "rdm", /* 4 */
572 "seqpak" /* 5 */
573 };
574#define STYPEMAX 5
575 struct socket so;
576 struct protosw proto;
577 struct domain dom;
578 struct inpcb inpcb;
579 struct unpcb unpcb;
580 int len;
581 char dname[32], *strcpy();
582
583 PREFIX(i);
584
585 /* fill in socket */
586 if (!KVM_READ(sock, &so, sizeof(struct socket))) {
587 dprintf(stderr, "can't read sock at %x\n", sock);
588 goto bad;
589 }
590
591 /* fill in protosw entry */
592 if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) {
593 dprintf(stderr, "can't read protosw at %x", so.so_proto);
594 goto bad;
595 }
596
597 /* fill in domain */
598 if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) {
599 dprintf(stderr, "can't read domain at %x\n", proto.pr_domain);
600 goto bad;
601 }
602
603 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname,
604 sizeof(dname) - 1)) < 0) {
605 dprintf(stderr, "can't read domain name at %x\n",
606 dom.dom_name);
607 dname[0] = '\0';
608 }
609 else
610 dname[len] = '\0';
611
612 if ((u_short)so.so_type > STYPEMAX)
613 printf("* %s ?%d", dname, so.so_type);
614 else
615 printf("* %s %s", dname, stypename[so.so_type]);
616
617 /*
618 * protocol specific formatting
619 *
620 * Try to find interesting things to print. For tcp, the interesting
621 * thing is the address of the tcpcb, for udp and others, just the
622 * inpcb (socket pcb). For unix domain, its the address of the socket
623 * pcb and the address of the connected pcb (if connected). Otherwise
624 * just print the protocol number and address of the socket itself.
625 * The idea is not to duplicate netstat, but to make available enough
626 * information for further analysis.
627 */
628 switch(dom.dom_family) {
629 case AF_INET:
630 getinetproto(proto.pr_protocol);
631 if (proto.pr_protocol == IPPROTO_TCP ) {
632 if (so.so_pcb) {
633 if (kvm_read(kd, (u_long)so.so_pcb,
634 (char *)&inpcb, sizeof(struct inpcb))
635 != sizeof(struct inpcb)) {
636 dprintf(stderr,
637 "can't read inpcb at %x\n",
638 so.so_pcb);
639 goto bad;
640 }
641 printf(" %x", (int)inpcb.inp_ppcb);
642 }
643 }
644 else if (so.so_pcb)
645 printf(" %x", (int)so.so_pcb);
646 break;
647 case AF_UNIX:
648 /* print address of pcb and connected pcb */
649 if (so.so_pcb) {
650 printf(" %x", (int)so.so_pcb);
651 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb,
652 sizeof(struct unpcb)) != sizeof(struct unpcb)){
653 dprintf(stderr, "can't read unpcb at %x\n",
654 so.so_pcb);
655 goto bad;
656 }
657 if (unpcb.unp_conn) {
658 char shoconn[4], *cp;
659
660 cp = shoconn;
661 if (!(so.so_state & SS_CANTRCVMORE))
662 *cp++ = '<';
663 *cp++ = '-';
664 if (!(so.so_state & SS_CANTSENDMORE))
665 *cp++ = '>';
666 *cp = '\0';
667 printf(" %s %x", shoconn,
668 (int)unpcb.unp_conn);
669 }
670 }
671 break;
672 default:
673 /* print protocol number and socket address */
674 printf(" %d %x", proto.pr_protocol, (int)sock);
675 }
676 printf("\n");
677 return;
678bad:
679 printf("* error\n");
680}
681
682/*
683 * getinetproto --
684 * print name of protocol number
685 */
686void
687getinetproto(number)
688 int number;
689{
690 char *cp;
691
692 switch(number) {
693 case IPPROTO_IP:
694 cp = "ip"; break;
695 case IPPROTO_ICMP:
696 cp ="icmp"; break;
697 case IPPROTO_GGP:
698 cp ="ggp"; break;
699 case IPPROTO_TCP:
700 cp ="tcp"; break;
701 case IPPROTO_EGP:
702 cp ="egp"; break;
703 case IPPROTO_PUP:
704 cp ="pup"; break;
705 case IPPROTO_UDP:
706 cp ="udp"; break;
707 case IPPROTO_IDP:
708 cp ="idp"; break;
709 case IPPROTO_RAW:
710 cp ="raw"; break;
711 default:
712 printf(" %d", number);
713 return;
714 }
715 printf(" %s", cp);
716}
717
718getfname(filename)
719 char *filename;
720{
721 struct stat statbuf;
722 DEVS *cur;
723
724 if (stat(filename, &statbuf)) {
725 fprintf(stderr, "fstat: %s: %s\n", filename, strerror(errno));
726 return(0);
727 }
728 if ((cur = malloc(sizeof(DEVS))) == NULL) {
729 fprintf(stderr, "fstat: %s\n", strerror(errno));
730 exit(1);
731 }
732 cur->next = devs;
733 devs = cur;
734
735 cur->ino = statbuf.st_ino;
736 cur->fsid = statbuf.st_dev & 0xffff;
737 cur->name = filename;
738 return(1);
739}
740
741void
742usage()
743{
744 (void)fprintf(stderr,
745 "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n");
746 exit(1);
747}