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1.1 deraadt 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
35: static 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
41: /*static char sccsid[] = "from: @(#)fstat.c 8.1 (Berkeley) 6/6/93";*/
42: static char *rcsid = "$Id: fstat.c,v 1.14 1995/03/28 17:24:12 jtc Exp $";
43: #endif /* not lint */
44:
45: #include <sys/param.h>
46: #include <sys/time.h>
47: #include <sys/proc.h>
48: #include <sys/user.h>
49: #include <sys/stat.h>
50: #include <sys/vnode.h>
51: #include <sys/socket.h>
52: #include <sys/socketvar.h>
53: #include <sys/domain.h>
54: #include <sys/protosw.h>
55: #include <sys/unpcb.h>
56: #include <sys/sysctl.h>
57: #include <sys/filedesc.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/nfsv2.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:
92: typedef struct devs {
93: struct devs *next;
94: long fsid;
95: ino_t ino;
96: char *name;
97: } DEVS;
98: DEVS *devs;
99:
100: struct filestat {
101: long fsid;
102: long fileid;
103: mode_t mode;
104: u_long size;
105: dev_t rdev;
106: };
107:
108: #ifdef notdef
109: struct nlist nl[] = {
110: { "" },
111: };
112: #endif
113:
114: int 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 */
117: int checkfile; /* true if restricting to particular files or filesystems */
118: int nflg; /* (numerical) display f.s. and rdev as dev_t */
119: int vflg; /* display errors in locating kernel data objects etc... */
120:
121: #define dprintf if (vflg) fprintf
122:
123: struct file **ofiles; /* buffer of pointers to file structures */
124: int 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:
142: kvm_t *kd;
143:
144: int ufs_filestat(), nfs_filestat();
145: void dofiles(), getinetproto(), socktrans();
146: void usage(), vtrans();
147:
148: main(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:
265: char *Uname, *Comm;
266: int 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: */
290: void
291: dofiles(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: if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles ||
315: filed.fd_freefile > filed.fd_lastfile + 1) {
316: dprintf(stderr, "filedesc corrupted at %x for pid %d\n",
317: p->p_fd, Pid);
318: return;
319: }
320: /*
321: * root directory vnode, if one
322: */
323: if (filed.fd_rdir)
324: vtrans(filed.fd_rdir, RDIR, FREAD);
325: /*
326: * current working directory vnode
327: */
328: vtrans(filed.fd_cdir, CDIR, FREAD);
329: /*
330: * ktrace vnode, if one
331: */
332: if (p->p_tracep)
333: vtrans(p->p_tracep, TRACE, FREAD|FWRITE);
334: /*
335: * open files
336: */
337: #define FPSIZE (sizeof (struct file *))
338: ALLOC_OFILES(filed.fd_lastfile+1);
339: if (filed.fd_nfiles > NDFILE) {
340: if (!KVM_READ(filed.fd_ofiles, ofiles,
341: (filed.fd_lastfile+1) * FPSIZE)) {
342: dprintf(stderr,
343: "can't read file structures at %x for pid %d\n",
344: filed.fd_ofiles, Pid);
345: return;
346: }
347: } else
348: bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE);
349: for (i = 0; i <= filed.fd_lastfile; i++) {
350: if (ofiles[i] == NULL)
351: continue;
352: if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) {
353: dprintf(stderr, "can't read file %d at %x for pid %d\n",
354: i, ofiles[i], Pid);
355: continue;
356: }
357: if (file.f_type == DTYPE_VNODE)
358: vtrans((struct vnode *)file.f_data, i, file.f_flag);
359: else if (file.f_type == DTYPE_SOCKET) {
360: if (checkfile == 0)
361: socktrans((struct socket *)file.f_data, i);
362: }
363: else {
364: dprintf(stderr,
365: "unknown file type %d for file %d of pid %d\n",
366: file.f_type, i, Pid);
367: }
368: }
369: }
370:
371: void
372: vtrans(vp, i, flag)
373: struct vnode *vp;
374: int i;
375: int flag;
376: {
377: struct vnode vn;
378: struct filestat fst;
379: char rw[3], mode[15];
380: char *badtype = NULL, *filename, *getmnton();
381:
382: filename = badtype = NULL;
383: if (!KVM_READ(vp, &vn, sizeof (struct vnode))) {
384: dprintf(stderr, "can't read vnode at %x for pid %d\n",
385: vp, Pid);
386: return;
387: }
388: if (vn.v_type == VNON || vn.v_tag == VT_NON)
389: badtype = "none";
390: else if (vn.v_type == VBAD)
391: badtype = "bad";
392: else
393: switch (vn.v_tag) {
394: case VT_UFS:
395: if (!ufs_filestat(&vn, &fst))
396: badtype = "error";
397: break;
398: case VT_MFS:
399: if (!ufs_filestat(&vn, &fst))
400: badtype = "error";
401: break;
402: case VT_NFS:
403: if (!nfs_filestat(&vn, &fst))
404: badtype = "error";
405: break;
406: default: {
407: static char unknown[10];
408: sprintf(badtype = unknown, "?(%x)", vn.v_tag);
409: break;;
410: }
411: }
412: if (checkfile) {
413: int fsmatch = 0;
414: register DEVS *d;
415:
416: if (badtype)
417: return;
418: for (d = devs; d != NULL; d = d->next)
419: if (d->fsid == fst.fsid) {
420: fsmatch = 1;
421: if (d->ino == fst.fileid) {
422: filename = d->name;
423: break;
424: }
425: }
426: if (fsmatch == 0 || (filename == NULL && fsflg == 0))
427: return;
428: }
429: PREFIX(i);
430: if (badtype) {
431: (void)printf(" - - %10s -\n", badtype);
432: return;
433: }
434: if (nflg)
435: (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid));
436: else
437: (void)printf(" %-8s", getmnton(vn.v_mount));
438: if (nflg)
439: (void)sprintf(mode, "%o", fst.mode);
440: else
441: strmode(fst.mode, mode);
442: (void)printf(" %6d %10s", fst.fileid, mode);
443: switch (vn.v_type) {
444: case VBLK:
445: case VCHR: {
446: char *name;
447:
448: if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ?
449: S_IFCHR : S_IFBLK)) == NULL))
450: printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev));
451: else
452: printf(" %6s", name);
453: break;
454: }
455: default:
456: printf(" %6d", fst.size);
457: }
458: rw[0] = '\0';
459: if (flag & FREAD)
460: strcat(rw, "r");
461: if (flag & FWRITE)
462: strcat(rw, "w");
463: printf(" %2s", rw);
464: if (filename && !fsflg)
465: printf(" %s", filename);
466: putchar('\n');
467: }
468:
469: int
470: ufs_filestat(vp, fsp)
471: struct vnode *vp;
472: struct filestat *fsp;
473: {
474: struct inode inode;
475:
476: if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) {
477: dprintf(stderr, "can't read inode at %x for pid %d\n",
478: VTOI(vp), Pid);
479: return 0;
480: }
481: fsp->fsid = inode.i_dev & 0xffff;
482: fsp->fileid = (long)inode.i_number;
483: fsp->mode = (mode_t)inode.i_mode;
484: fsp->size = (u_long)inode.i_size;
485: fsp->rdev = inode.i_rdev;
486:
487: return 1;
488: }
489:
490: int
491: nfs_filestat(vp, fsp)
492: struct vnode *vp;
493: struct filestat *fsp;
494: {
495: struct nfsnode nfsnode;
496: register mode_t mode;
497:
498: if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) {
499: dprintf(stderr, "can't read nfsnode at %x for pid %d\n",
500: VTONFS(vp), Pid);
501: return 0;
502: }
503: fsp->fsid = nfsnode.n_vattr.va_fsid;
504: fsp->fileid = nfsnode.n_vattr.va_fileid;
505: fsp->size = nfsnode.n_size;
506: fsp->rdev = nfsnode.n_vattr.va_rdev;
507: mode = (mode_t)nfsnode.n_vattr.va_mode;
508: switch (vp->v_type) {
509: case VREG:
510: mode |= S_IFREG;
511: break;
512: case VDIR:
513: mode |= S_IFDIR;
514: break;
515: case VBLK:
516: mode |= S_IFBLK;
517: break;
518: case VCHR:
519: mode |= S_IFCHR;
520: break;
521: case VLNK:
522: mode |= S_IFLNK;
523: break;
524: case VSOCK:
525: mode |= S_IFSOCK;
526: break;
527: case VFIFO:
528: mode |= S_IFIFO;
529: break;
530: };
531: fsp->mode = mode;
532:
533: return 1;
534: }
535:
536:
537: char *
538: getmnton(m)
539: struct mount *m;
540: {
541: static struct mount mount;
542: static struct mtab {
543: struct mtab *next;
544: struct mount *m;
545: char mntonname[MNAMELEN];
546: } *mhead = NULL;
547: register struct mtab *mt;
548:
549: for (mt = mhead; mt != NULL; mt = mt->next)
550: if (m == mt->m)
551: return (mt->mntonname);
552: if (!KVM_READ(m, &mount, sizeof(struct mount))) {
553: fprintf(stderr, "can't read mount table at %x\n", m);
554: return (NULL);
555: }
556: if ((mt = malloc(sizeof (struct mtab))) == NULL) {
557: fprintf(stderr, "fstat: %s\n", strerror(errno));
558: exit(1);
559: }
560: mt->m = m;
561: bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN);
562: mt->next = mhead;
563: mhead = mt;
564: return (mt->mntonname);
565: }
566:
567: void
568: socktrans(sock, i)
569: struct socket *sock;
570: int i;
571: {
572: static char *stypename[] = {
573: "unused", /* 0 */
574: "stream", /* 1 */
575: "dgram", /* 2 */
576: "raw", /* 3 */
577: "rdm", /* 4 */
578: "seqpak" /* 5 */
579: };
580: #define STYPEMAX 5
581: struct socket so;
582: struct protosw proto;
583: struct domain dom;
584: struct inpcb inpcb;
585: struct unpcb unpcb;
586: int len;
587: char dname[32], *strcpy();
588:
589: PREFIX(i);
590:
591: /* fill in socket */
592: if (!KVM_READ(sock, &so, sizeof(struct socket))) {
593: dprintf(stderr, "can't read sock at %x\n", sock);
594: goto bad;
595: }
596:
597: /* fill in protosw entry */
598: if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) {
599: dprintf(stderr, "can't read protosw at %x", so.so_proto);
600: goto bad;
601: }
602:
603: /* fill in domain */
604: if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) {
605: dprintf(stderr, "can't read domain at %x\n", proto.pr_domain);
606: goto bad;
607: }
608:
609: if ((len = kvm_read(kd, (u_long)dom.dom_name, dname,
610: sizeof(dname) - 1)) < 0) {
611: dprintf(stderr, "can't read domain name at %x\n",
612: dom.dom_name);
613: dname[0] = '\0';
614: }
615: else
616: dname[len] = '\0';
617:
618: if ((u_short)so.so_type > STYPEMAX)
619: printf("* %s ?%d", dname, so.so_type);
620: else
621: printf("* %s %s", dname, stypename[so.so_type]);
622:
623: /*
624: * protocol specific formatting
625: *
626: * Try to find interesting things to print. For tcp, the interesting
627: * thing is the address of the tcpcb, for udp and others, just the
628: * inpcb (socket pcb). For unix domain, its the address of the socket
629: * pcb and the address of the connected pcb (if connected). Otherwise
630: * just print the protocol number and address of the socket itself.
631: * The idea is not to duplicate netstat, but to make available enough
632: * information for further analysis.
633: */
634: switch(dom.dom_family) {
635: case AF_INET:
636: getinetproto(proto.pr_protocol);
637: if (proto.pr_protocol == IPPROTO_TCP ) {
638: if (so.so_pcb) {
639: if (kvm_read(kd, (u_long)so.so_pcb,
640: (char *)&inpcb, sizeof(struct inpcb))
641: != sizeof(struct inpcb)) {
642: dprintf(stderr,
643: "can't read inpcb at %x\n",
644: so.so_pcb);
645: goto bad;
646: }
647: printf(" %lx", (long)inpcb.inp_ppcb);
648: }
649: }
650: else if (so.so_pcb)
651: printf(" %lx", (long)so.so_pcb);
652: break;
653: case AF_UNIX:
654: /* print address of pcb and connected pcb */
655: if (so.so_pcb) {
656: printf(" %lx", (long)so.so_pcb);
657: if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb,
658: sizeof(struct unpcb)) != sizeof(struct unpcb)){
659: dprintf(stderr, "can't read unpcb at %x\n",
660: so.so_pcb);
661: goto bad;
662: }
663: if (unpcb.unp_conn) {
664: char shoconn[4], *cp;
665:
666: cp = shoconn;
667: if (!(so.so_state & SS_CANTRCVMORE))
668: *cp++ = '<';
669: *cp++ = '-';
670: if (!(so.so_state & SS_CANTSENDMORE))
671: *cp++ = '>';
672: *cp = '\0';
673: printf(" %s %lx", shoconn,
674: (long)unpcb.unp_conn);
675: }
676: }
677: break;
678: default:
679: /* print protocol number and socket address */
680: printf(" %d %lx", proto.pr_protocol, (long)sock);
681: }
682: printf("\n");
683: return;
684: bad:
685: printf("* error\n");
686: }
687:
688: /*
689: * getinetproto --
690: * print name of protocol number
691: */
692: void
693: getinetproto(number)
694: int number;
695: {
696: char *cp;
697:
698: switch(number) {
699: case IPPROTO_IP:
700: cp = "ip"; break;
701: case IPPROTO_ICMP:
702: cp ="icmp"; break;
703: case IPPROTO_GGP:
704: cp ="ggp"; break;
705: case IPPROTO_TCP:
706: cp ="tcp"; break;
707: case IPPROTO_EGP:
708: cp ="egp"; break;
709: case IPPROTO_PUP:
710: cp ="pup"; break;
711: case IPPROTO_UDP:
712: cp ="udp"; break;
713: case IPPROTO_IDP:
714: cp ="idp"; break;
715: case IPPROTO_RAW:
716: cp ="raw"; break;
717: default:
718: printf(" %d", number);
719: return;
720: }
721: printf(" %s", cp);
722: }
723:
724: getfname(filename)
725: char *filename;
726: {
727: struct stat statbuf;
728: DEVS *cur;
729:
730: if (stat(filename, &statbuf)) {
731: fprintf(stderr, "fstat: %s: %s\n", filename, strerror(errno));
732: return(0);
733: }
734: if ((cur = malloc(sizeof(DEVS))) == NULL) {
735: fprintf(stderr, "fstat: %s\n", strerror(errno));
736: exit(1);
737: }
738: cur->next = devs;
739: devs = cur;
740:
741: cur->ino = statbuf.st_ino;
742: cur->fsid = statbuf.st_dev & 0xffff;
743: cur->name = filename;
744: return(1);
745: }
746:
747: void
748: usage()
749: {
750: (void)fprintf(stderr,
751: "usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n");
752: exit(1);
753: }