Annotation of src/usr.bin/fstat/fstat.c, Revision 1.4
1.3 deraadt 1: /* $OpenBSD: fstat.c,v 1.2 1996/03/27 19:32:24 niklas Exp $ */
1.2 niklas 2:
1.1 deraadt 3: /*-
4: * Copyright (c) 1988, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: static char copyright[] =
38: "@(#) Copyright (c) 1988, 1993\n\
39: The Regents of the University of California. All rights reserved.\n";
40: #endif /* not lint */
41:
42: #ifndef lint
43: /*static char sccsid[] = "from: @(#)fstat.c 8.1 (Berkeley) 6/6/93";*/
1.3 deraadt 44: static char *rcsid = "$OpenBSD: fstat.c,v 1.2 1996/03/27 19:32:24 niklas Exp $";
1.1 deraadt 45: #endif /* not lint */
46:
47: #include <sys/param.h>
48: #include <sys/time.h>
49: #include <sys/proc.h>
50: #include <sys/user.h>
51: #include <sys/stat.h>
52: #include <sys/vnode.h>
53: #include <sys/socket.h>
54: #include <sys/socketvar.h>
55: #include <sys/domain.h>
56: #include <sys/protosw.h>
57: #include <sys/unpcb.h>
58: #include <sys/sysctl.h>
59: #include <sys/filedesc.h>
60: #define _KERNEL
61: #include <sys/file.h>
62: #include <ufs/ufs/quota.h>
63: #include <ufs/ufs/inode.h>
64: #undef _KERNEL
65: #define NFS
66: #include <sys/mount.h>
1.2 niklas 67: #include <nfs/nfsproto.h>
1.1 deraadt 68: #include <nfs/rpcv2.h>
69: #include <nfs/nfs.h>
70: #include <nfs/nfsnode.h>
71: #undef NFS
72:
73: #include <net/route.h>
74: #include <netinet/in.h>
75: #include <netinet/in_systm.h>
76: #include <netinet/ip.h>
77: #include <netinet/in_pcb.h>
78:
79: #include <ctype.h>
80: #include <errno.h>
81: #include <kvm.h>
1.2 niklas 82: #include <limits.h>
1.1 deraadt 83: #include <nlist.h>
84: #include <paths.h>
85: #include <pwd.h>
86: #include <stdio.h>
87: #include <stdlib.h>
88: #include <string.h>
89:
90: #define TEXT -1
91: #define CDIR -2
92: #define RDIR -3
93: #define TRACE -4
94:
95: typedef struct devs {
96: struct devs *next;
97: long fsid;
98: ino_t ino;
99: char *name;
100: } DEVS;
101: DEVS *devs;
102:
103: struct filestat {
104: long fsid;
105: long fileid;
106: mode_t mode;
107: u_long size;
108: dev_t rdev;
109: };
110:
111: #ifdef notdef
112: struct nlist nl[] = {
113: { "" },
114: };
115: #endif
116:
117: int fsflg, /* show files on same filesystem as file(s) argument */
118: pflg, /* show files open by a particular pid */
119: uflg; /* show files open by a particular (effective) user */
120: int checkfile; /* true if restricting to particular files or filesystems */
121: int nflg; /* (numerical) display f.s. and rdev as dev_t */
122: int vflg; /* display errors in locating kernel data objects etc... */
123:
124: #define dprintf if (vflg) fprintf
125:
126: struct file **ofiles; /* buffer of pointers to file structures */
127: int maxfiles;
128: #define ALLOC_OFILES(d) \
129: if ((d) > maxfiles) { \
130: free(ofiles); \
131: ofiles = malloc((d) * sizeof(struct file *)); \
132: if (ofiles == NULL) { \
133: fprintf(stderr, "fstat: %s\n", strerror(errno)); \
134: exit(1); \
135: } \
136: maxfiles = (d); \
137: }
138:
139: /*
140: * a kvm_read that returns true if everything is read
141: */
142: #define KVM_READ(kaddr, paddr, len) \
143: (kvm_read(kd, (u_long)(kaddr), (char *)(paddr), (len)) == (len))
144:
145: kvm_t *kd;
146:
147: int ufs_filestat(), nfs_filestat();
148: void dofiles(), getinetproto(), socktrans();
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 kinfo_proc *p, *plast;
159: int arg, ch, what;
160: char *memf, *nlistf;
1.2 niklas 161: char buf[_POSIX2_LINE_MAX];
1.1 deraadt 162: int cnt;
163:
164: arg = 0;
165: what = KERN_PROC_ALL;
166: nlistf = memf = NULL;
1.3 deraadt 167: while ((ch = getopt(argc, argv, "fnp:u:vN:M:")) != EOF)
1.1 deraadt 168: switch((char)ch) {
169: case 'f':
170: fsflg = 1;
171: break;
172: case 'M':
173: memf = optarg;
174: break;
175: case 'N':
176: nlistf = optarg;
177: break;
178: case 'n':
179: nflg = 1;
180: break;
181: case 'p':
182: if (pflg++)
183: usage();
184: if (!isdigit(*optarg)) {
185: fprintf(stderr,
186: "fstat: -p requires a process id\n");
187: usage();
188: }
189: what = KERN_PROC_PID;
190: arg = atoi(optarg);
191: break;
192: case 'u':
193: if (uflg++)
194: usage();
195: if (!(passwd = getpwnam(optarg))) {
196: fprintf(stderr, "%s: unknown uid\n",
197: optarg);
198: exit(1);
199: }
200: what = KERN_PROC_UID;
201: arg = passwd->pw_uid;
202: break;
203: case 'v':
204: vflg = 1;
205: break;
206: case '?':
207: default:
208: usage();
209: }
210:
211: if (*(argv += optind)) {
212: for (; *argv; ++argv) {
213: if (getfname(*argv))
214: checkfile = 1;
215: }
216: if (!checkfile) /* file(s) specified, but none accessable */
217: exit(1);
218: }
219:
220: ALLOC_OFILES(256); /* reserve space for file pointers */
221:
222: if (fsflg && !checkfile) {
223: /* -f with no files means use wd */
224: if (getfname(".") == 0)
225: exit(1);
226: checkfile = 1;
227: }
228:
229: /*
230: * Discard setgid privileges if not the running kernel so that bad
231: * guys can't print interesting stuff from kernel memory.
232: */
233: if (nlistf != NULL || memf != NULL)
234: setgid(getgid());
235:
1.2 niklas 236: if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) {
237: fprintf(stderr, "fstat: %s\n", buf);
1.1 deraadt 238: exit(1);
239: }
240: #ifdef notdef
241: if (kvm_nlist(kd, nl) != 0) {
242: fprintf(stderr, "fstat: no namelist: %s\n", kvm_geterr(kd));
243: exit(1);
244: }
245: #endif
246: if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) {
247: fprintf(stderr, "fstat: %s\n", kvm_geterr(kd));
248: exit(1);
249: }
250: if (nflg)
251: printf("%s",
252: "USER CMD PID FD DEV INUM MODE SZ|DV R/W");
253: else
254: printf("%s",
255: "USER CMD PID FD MOUNT INUM MODE SZ|DV R/W");
256: if (checkfile && fsflg == 0)
257: printf(" NAME\n");
258: else
259: putchar('\n');
260:
261: for (plast = &p[cnt]; p < plast; ++p) {
262: if (p->kp_proc.p_stat == SZOMB)
263: continue;
264: dofiles(p);
265: }
266: exit(0);
267: }
268:
269: char *Uname, *Comm;
270: int Pid;
271:
272: #define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \
273: switch(i) { \
274: case TEXT: \
275: printf(" text"); \
276: break; \
277: case CDIR: \
278: printf(" wd"); \
279: break; \
280: case RDIR: \
281: printf(" root"); \
282: break; \
283: case TRACE: \
284: printf(" tr"); \
285: break; \
286: default: \
287: printf(" %4d", i); \
288: break; \
289: }
290:
291: /*
292: * print open files attributed to this process
293: */
294: void
295: dofiles(kp)
296: struct kinfo_proc *kp;
297: {
298: int i, last;
299: struct file file;
300: struct filedesc0 filed0;
301: #define filed filed0.fd_fd
302: struct proc *p = &kp->kp_proc;
303: struct eproc *ep = &kp->kp_eproc;
304:
305: extern char *user_from_uid();
306:
307: Uname = user_from_uid(ep->e_ucred.cr_uid, 0);
308: Pid = p->p_pid;
309: Comm = p->p_comm;
310:
311: if (p->p_fd == NULL)
312: return;
313: if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) {
314: dprintf(stderr, "can't read filedesc at %x for pid %d\n",
315: p->p_fd, Pid);
316: return;
317: }
318: if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles ||
319: filed.fd_freefile > filed.fd_lastfile + 1) {
320: dprintf(stderr, "filedesc corrupted at %x for pid %d\n",
321: p->p_fd, Pid);
322: return;
323: }
324: /*
325: * root directory vnode, if one
326: */
327: if (filed.fd_rdir)
328: vtrans(filed.fd_rdir, RDIR, FREAD);
329: /*
330: * current working directory vnode
331: */
332: vtrans(filed.fd_cdir, CDIR, FREAD);
333: /*
334: * ktrace vnode, if one
335: */
336: if (p->p_tracep)
337: vtrans(p->p_tracep, TRACE, FREAD|FWRITE);
338: /*
339: * open files
340: */
341: #define FPSIZE (sizeof (struct file *))
342: ALLOC_OFILES(filed.fd_lastfile+1);
343: if (filed.fd_nfiles > NDFILE) {
344: if (!KVM_READ(filed.fd_ofiles, ofiles,
345: (filed.fd_lastfile+1) * FPSIZE)) {
346: dprintf(stderr,
347: "can't read file structures at %x for pid %d\n",
348: filed.fd_ofiles, Pid);
349: return;
350: }
351: } else
352: bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE);
353: for (i = 0; i <= filed.fd_lastfile; i++) {
354: if (ofiles[i] == NULL)
355: continue;
356: if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) {
357: dprintf(stderr, "can't read file %d at %x for pid %d\n",
358: i, ofiles[i], Pid);
359: continue;
360: }
361: if (file.f_type == DTYPE_VNODE)
362: vtrans((struct vnode *)file.f_data, i, file.f_flag);
363: else if (file.f_type == DTYPE_SOCKET) {
364: if (checkfile == 0)
365: socktrans((struct socket *)file.f_data, i);
366: }
367: else {
368: dprintf(stderr,
369: "unknown file type %d for file %d of pid %d\n",
370: file.f_type, i, Pid);
371: }
372: }
373: }
374:
375: void
376: vtrans(vp, i, flag)
377: struct vnode *vp;
378: int i;
379: int flag;
380: {
381: struct vnode vn;
382: struct filestat fst;
383: char rw[3], mode[15];
384: char *badtype = NULL, *filename, *getmnton();
385:
386: filename = badtype = NULL;
387: if (!KVM_READ(vp, &vn, sizeof (struct vnode))) {
388: dprintf(stderr, "can't read vnode at %x for pid %d\n",
389: vp, Pid);
390: return;
391: }
392: if (vn.v_type == VNON || vn.v_tag == VT_NON)
393: badtype = "none";
394: else if (vn.v_type == VBAD)
395: badtype = "bad";
396: else
397: switch (vn.v_tag) {
398: case VT_UFS:
399: if (!ufs_filestat(&vn, &fst))
400: badtype = "error";
401: break;
402: case VT_MFS:
403: if (!ufs_filestat(&vn, &fst))
404: badtype = "error";
405: break;
406: case VT_NFS:
407: if (!nfs_filestat(&vn, &fst))
408: badtype = "error";
409: break;
410: default: {
1.4 ! deraadt 411: static char unknown[20];
1.1 deraadt 412: sprintf(badtype = unknown, "?(%x)", vn.v_tag);
413: break;;
414: }
415: }
416: if (checkfile) {
417: int fsmatch = 0;
418: register DEVS *d;
419:
420: if (badtype)
421: return;
422: for (d = devs; d != NULL; d = d->next)
423: if (d->fsid == fst.fsid) {
424: fsmatch = 1;
425: if (d->ino == fst.fileid) {
426: filename = d->name;
427: break;
428: }
429: }
430: if (fsmatch == 0 || (filename == NULL && fsflg == 0))
431: return;
432: }
433: PREFIX(i);
434: if (badtype) {
435: (void)printf(" - - %10s -\n", badtype);
436: return;
437: }
438: if (nflg)
439: (void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid));
440: else
441: (void)printf(" %-8s", getmnton(vn.v_mount));
442: if (nflg)
443: (void)sprintf(mode, "%o", fst.mode);
444: else
445: strmode(fst.mode, mode);
446: (void)printf(" %6d %10s", fst.fileid, mode);
447: switch (vn.v_type) {
448: case VBLK:
449: case VCHR: {
450: char *name;
451:
452: if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ?
453: S_IFCHR : S_IFBLK)) == NULL))
454: printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev));
455: else
456: printf(" %6s", name);
457: break;
458: }
459: default:
460: printf(" %6d", fst.size);
461: }
462: rw[0] = '\0';
463: if (flag & FREAD)
464: strcat(rw, "r");
465: if (flag & FWRITE)
466: strcat(rw, "w");
467: printf(" %2s", rw);
468: if (filename && !fsflg)
469: printf(" %s", filename);
470: putchar('\n');
471: }
472:
473: int
474: ufs_filestat(vp, fsp)
475: struct vnode *vp;
476: struct filestat *fsp;
477: {
478: struct inode inode;
479:
480: if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) {
481: dprintf(stderr, "can't read inode at %x for pid %d\n",
482: VTOI(vp), Pid);
483: return 0;
484: }
485: fsp->fsid = inode.i_dev & 0xffff;
486: fsp->fileid = (long)inode.i_number;
487: fsp->mode = (mode_t)inode.i_mode;
488: fsp->size = (u_long)inode.i_size;
489: fsp->rdev = inode.i_rdev;
490:
491: return 1;
492: }
493:
494: int
495: nfs_filestat(vp, fsp)
496: struct vnode *vp;
497: struct filestat *fsp;
498: {
499: struct nfsnode nfsnode;
500: register mode_t mode;
501:
502: if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) {
503: dprintf(stderr, "can't read nfsnode at %x for pid %d\n",
504: VTONFS(vp), Pid);
505: return 0;
506: }
507: fsp->fsid = nfsnode.n_vattr.va_fsid;
508: fsp->fileid = nfsnode.n_vattr.va_fileid;
509: fsp->size = nfsnode.n_size;
510: fsp->rdev = nfsnode.n_vattr.va_rdev;
511: mode = (mode_t)nfsnode.n_vattr.va_mode;
512: switch (vp->v_type) {
513: case VREG:
514: mode |= S_IFREG;
515: break;
516: case VDIR:
517: mode |= S_IFDIR;
518: break;
519: case VBLK:
520: mode |= S_IFBLK;
521: break;
522: case VCHR:
523: mode |= S_IFCHR;
524: break;
525: case VLNK:
526: mode |= S_IFLNK;
527: break;
528: case VSOCK:
529: mode |= S_IFSOCK;
530: break;
531: case VFIFO:
532: mode |= S_IFIFO;
533: break;
534: };
535: fsp->mode = mode;
536:
537: return 1;
538: }
539:
540:
541: char *
542: getmnton(m)
543: struct mount *m;
544: {
545: static struct mount mount;
546: static struct mtab {
547: struct mtab *next;
548: struct mount *m;
549: char mntonname[MNAMELEN];
550: } *mhead = NULL;
551: register struct mtab *mt;
552:
553: for (mt = mhead; mt != NULL; mt = mt->next)
554: if (m == mt->m)
555: return (mt->mntonname);
556: if (!KVM_READ(m, &mount, sizeof(struct mount))) {
557: fprintf(stderr, "can't read mount table at %x\n", m);
558: return (NULL);
559: }
560: if ((mt = malloc(sizeof (struct mtab))) == NULL) {
561: fprintf(stderr, "fstat: %s\n", strerror(errno));
562: exit(1);
563: }
564: mt->m = m;
565: bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN);
566: mt->next = mhead;
567: mhead = mt;
568: return (mt->mntonname);
569: }
570:
571: void
572: socktrans(sock, i)
573: struct socket *sock;
574: int i;
575: {
576: static char *stypename[] = {
577: "unused", /* 0 */
578: "stream", /* 1 */
579: "dgram", /* 2 */
580: "raw", /* 3 */
581: "rdm", /* 4 */
582: "seqpak" /* 5 */
583: };
584: #define STYPEMAX 5
585: struct socket so;
586: struct protosw proto;
587: struct domain dom;
588: struct inpcb inpcb;
589: struct unpcb unpcb;
590: int len;
1.4 ! deraadt 591: char dname[32];
1.1 deraadt 592:
593: PREFIX(i);
594:
595: /* fill in socket */
596: if (!KVM_READ(sock, &so, sizeof(struct socket))) {
597: dprintf(stderr, "can't read sock at %x\n", sock);
598: goto bad;
599: }
600:
601: /* fill in protosw entry */
602: if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) {
603: dprintf(stderr, "can't read protosw at %x", so.so_proto);
604: goto bad;
605: }
606:
607: /* fill in domain */
608: if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) {
609: dprintf(stderr, "can't read domain at %x\n", proto.pr_domain);
610: goto bad;
611: }
612:
613: if ((len = kvm_read(kd, (u_long)dom.dom_name, dname,
614: sizeof(dname) - 1)) < 0) {
615: dprintf(stderr, "can't read domain name at %x\n",
616: dom.dom_name);
617: dname[0] = '\0';
618: }
619: else
620: dname[len] = '\0';
621:
622: if ((u_short)so.so_type > STYPEMAX)
623: printf("* %s ?%d", dname, so.so_type);
624: else
625: printf("* %s %s", dname, stypename[so.so_type]);
626:
627: /*
628: * protocol specific formatting
629: *
630: * Try to find interesting things to print. For tcp, the interesting
631: * thing is the address of the tcpcb, for udp and others, just the
632: * inpcb (socket pcb). For unix domain, its the address of the socket
633: * pcb and the address of the connected pcb (if connected). Otherwise
634: * just print the protocol number and address of the socket itself.
635: * The idea is not to duplicate netstat, but to make available enough
636: * information for further analysis.
637: */
638: switch(dom.dom_family) {
639: case AF_INET:
640: getinetproto(proto.pr_protocol);
641: if (proto.pr_protocol == IPPROTO_TCP ) {
642: if (so.so_pcb) {
643: if (kvm_read(kd, (u_long)so.so_pcb,
644: (char *)&inpcb, sizeof(struct inpcb))
645: != sizeof(struct inpcb)) {
646: dprintf(stderr,
647: "can't read inpcb at %x\n",
648: so.so_pcb);
649: goto bad;
650: }
651: printf(" %lx", (long)inpcb.inp_ppcb);
652: }
653: }
654: else if (so.so_pcb)
655: printf(" %lx", (long)so.so_pcb);
656: break;
657: case AF_UNIX:
658: /* print address of pcb and connected pcb */
659: if (so.so_pcb) {
660: printf(" %lx", (long)so.so_pcb);
661: if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb,
662: sizeof(struct unpcb)) != sizeof(struct unpcb)){
663: dprintf(stderr, "can't read unpcb at %x\n",
664: so.so_pcb);
665: goto bad;
666: }
667: if (unpcb.unp_conn) {
668: char shoconn[4], *cp;
669:
670: cp = shoconn;
671: if (!(so.so_state & SS_CANTRCVMORE))
672: *cp++ = '<';
673: *cp++ = '-';
674: if (!(so.so_state & SS_CANTSENDMORE))
675: *cp++ = '>';
676: *cp = '\0';
677: printf(" %s %lx", shoconn,
678: (long)unpcb.unp_conn);
679: }
680: }
681: break;
682: default:
683: /* print protocol number and socket address */
684: printf(" %d %lx", proto.pr_protocol, (long)sock);
685: }
686: printf("\n");
687: return;
688: bad:
689: printf("* error\n");
690: }
691:
692: /*
693: * getinetproto --
694: * print name of protocol number
695: */
696: void
697: getinetproto(number)
698: int number;
699: {
700: char *cp;
701:
702: switch(number) {
703: case IPPROTO_IP:
704: cp = "ip"; break;
705: case IPPROTO_ICMP:
706: cp ="icmp"; break;
707: case IPPROTO_GGP:
708: cp ="ggp"; break;
709: case IPPROTO_TCP:
710: cp ="tcp"; break;
711: case IPPROTO_EGP:
712: cp ="egp"; break;
713: case IPPROTO_PUP:
714: cp ="pup"; break;
715: case IPPROTO_UDP:
716: cp ="udp"; break;
717: case IPPROTO_IDP:
718: cp ="idp"; break;
719: case IPPROTO_RAW:
720: cp ="raw"; break;
721: default:
722: printf(" %d", number);
723: return;
724: }
725: printf(" %s", cp);
726: }
727:
728: getfname(filename)
729: char *filename;
730: {
731: struct stat statbuf;
732: DEVS *cur;
733:
734: if (stat(filename, &statbuf)) {
735: fprintf(stderr, "fstat: %s: %s\n", filename, strerror(errno));
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: }