Annotation of src/usr.bin/nfsstat/nfsstat.c, Revision 1.1.1.1
1.1 deraadt 1: /*
2: * Copyright (c) 1983, 1989, 1993
3: * The Regents of the University of California. All rights reserved.
4: *
5: * This code is derived from software contributed to Berkeley by
6: * Rick Macklem at The University of Guelph.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1983, 1989, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: /*static char sccsid[] = "from: @(#)nfsstat.c 8.1 (Berkeley) 6/6/93";*/
45: static char *rcsid = "$Id: nfsstat.c,v 1.5 1994/06/13 21:02:20 mycroft Exp $";
46: #endif /* not lint */
47:
48: #include <sys/param.h>
49: #if BSD >= 199103
50: #define NEWVM
51: #endif
52: #ifndef NEWVM
53: #include <sys/vmmac.h>
54: #include <sys/ucred.h>
55: #include <machine/pte.h>
56: #endif
57: #include <sys/mount.h>
58: #include <nfs/nfsv2.h>
59: #include <nfs/nfs.h>
60: #include <signal.h>
61: #include <fcntl.h>
62: #include <ctype.h>
63: #include <errno.h>
64: #include <kvm.h>
65: #include <nlist.h>
66: #include <unistd.h>
67: #include <stdio.h>
68: #include <stdlib.h>
69: #include <string.h>
70: #include <paths.h>
71:
72: struct nlist nl[] = {
73: #define N_NFSSTAT 0
74: { "_nfsstats" },
75: "",
76: };
77: kvm_t *kd;
78:
79: void intpr(), printhdr(), sidewaysintpr(), usage();
80:
81: main(argc, argv)
82: int argc;
83: char **argv;
84: {
85: extern int optind;
86: extern char *optarg;
87: u_int interval;
88: int ch;
89: char *memf, *nlistf;
90: char errbuf[80];
91:
92: interval = 0;
93: memf = nlistf = NULL;
94: while ((ch = getopt(argc, argv, "M:N:w:")) != EOF)
95: switch(ch) {
96: case 'M':
97: memf = optarg;
98: break;
99: case 'N':
100: nlistf = optarg;
101: break;
102: case 'w':
103: interval = atoi(optarg);
104: break;
105: case '?':
106: default:
107: usage();
108: }
109: argc -= optind;
110: argv += optind;
111:
112: #define BACKWARD_COMPATIBILITY
113: #ifdef BACKWARD_COMPATIBILITY
114: if (*argv) {
115: interval = atoi(*argv);
116: if (*++argv) {
117: nlistf = *argv;
118: if (*++argv)
119: memf = *argv;
120: }
121: }
122: #endif
123: /*
124: * Discard setgid privileges if not the running kernel so that bad
125: * guys can't print interesting stuff from kernel memory.
126: */
127: if (nlistf != NULL || memf != NULL)
128: setgid(getgid());
129:
130: if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) {
131: fprintf(stderr, "nfsstat: kvm_openfiles: %s\n", errbuf);
132: exit(1);
133: }
134: if (kvm_nlist(kd, nl) != 0) {
135: fprintf(stderr, "nfsstat: kvm_nlist: can't get names\n");
136: exit(1);
137: }
138:
139: if (interval)
140: sidewaysintpr(interval, nl[N_NFSSTAT].n_value);
141: else
142: intpr(nl[N_NFSSTAT].n_value);
143: exit(0);
144: }
145:
146: /*
147: * Print a description of the nfs stats.
148: */
149: void
150: intpr(nfsstataddr)
151: u_long nfsstataddr;
152: {
153: struct nfsstats nfsstats;
154:
155: if (kvm_read(kd, (u_long)nfsstataddr, (char *)&nfsstats, sizeof(struct nfsstats)) < 0) {
156: fprintf(stderr, "nfsstat: kvm_read failed\n");
157: exit(1);
158: }
159: printf("Client Info:\n");
160: printf("Rpc Counts:\n");
161: printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
162: "Getattr", "Setattr", "Lookup", "Readlink", "Read",
163: "Write", "Create", "Remove");
164: printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
165: nfsstats.rpccnt[NFSPROC_GETATTR],
166: nfsstats.rpccnt[NFSPROC_SETATTR],
167: nfsstats.rpccnt[NFSPROC_LOOKUP],
168: nfsstats.rpccnt[NFSPROC_READLINK],
169: nfsstats.rpccnt[NFSPROC_READ],
170: nfsstats.rpccnt[NFSPROC_WRITE],
171: nfsstats.rpccnt[NFSPROC_CREATE],
172: nfsstats.rpccnt[NFSPROC_REMOVE]);
173: printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
174: "Rename", "Link", "Symlink", "Mkdir", "Rmdir",
175: "Readdir", "Statfs", "RdirLook");
176: printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
177: nfsstats.rpccnt[NFSPROC_RENAME],
178: nfsstats.rpccnt[NFSPROC_LINK],
179: nfsstats.rpccnt[NFSPROC_SYMLINK],
180: nfsstats.rpccnt[NFSPROC_MKDIR],
181: nfsstats.rpccnt[NFSPROC_RMDIR],
182: nfsstats.rpccnt[NFSPROC_READDIR],
183: nfsstats.rpccnt[NFSPROC_STATFS],
184: nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]);
185: printf("%9.9s %9.9s %9.9s\n",
186: "GLease", "Vacate", "Evict");
187: printf("%9d %9d %9d\n",
188: nfsstats.rpccnt[NQNFSPROC_GETLEASE],
189: nfsstats.rpccnt[NQNFSPROC_VACATED],
190: nfsstats.rpccnt[NQNFSPROC_EVICTED]);
191: printf("Rpc Info:\n");
192: printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n",
193: "TimedOut", "Invalid", "X Replies", "Retries", "Requests");
194: printf("%9d %9d %9d %9d %9d\n",
195: nfsstats.rpctimeouts,
196: nfsstats.rpcinvalid,
197: nfsstats.rpcunexpected,
198: nfsstats.rpcretries,
199: nfsstats.rpcrequests);
200: printf("Cache Info:\n");
201: printf("%9.9s %9.9s %9.9s %9.9s",
202: "Attr Hits", "Misses", "Lkup Hits", "Misses");
203: printf(" %9.9s %9.9s %9.9s %9.9s\n",
204: "BioR Hits", "Misses", "BioW Hits", "Misses");
205: printf("%9d %9d %9d %9d",
206: nfsstats.attrcache_hits, nfsstats.attrcache_misses,
207: nfsstats.lookupcache_hits, nfsstats.lookupcache_misses);
208: printf(" %9d %9d %9d %9d\n",
209: nfsstats.biocache_reads-nfsstats.read_bios,
210: nfsstats.read_bios,
211: nfsstats.biocache_writes-nfsstats.write_bios,
212: nfsstats.write_bios);
213: printf("%9.9s %9.9s %9.9s %9.9s",
214: "BioRLHits", "Misses", "BioD Hits", "Misses");
215: printf(" %9.9s %9.9s\n", "DirE Hits", "Misses");
216: printf("%9d %9d %9d %9d",
217: nfsstats.biocache_readlinks-nfsstats.readlink_bios,
218: nfsstats.readlink_bios,
219: nfsstats.biocache_readdirs-nfsstats.readdir_bios,
220: nfsstats.readdir_bios);
221: printf(" %9d %9d\n",
222: nfsstats.direofcache_hits, nfsstats.direofcache_misses);
223: printf("\nServer Info:\n");
224: printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
225: "Getattr", "Setattr", "Lookup", "Readlink", "Read",
226: "Write", "Create", "Remove");
227: printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
228: nfsstats.srvrpccnt[NFSPROC_GETATTR],
229: nfsstats.srvrpccnt[NFSPROC_SETATTR],
230: nfsstats.srvrpccnt[NFSPROC_LOOKUP],
231: nfsstats.srvrpccnt[NFSPROC_READLINK],
232: nfsstats.srvrpccnt[NFSPROC_READ],
233: nfsstats.srvrpccnt[NFSPROC_WRITE],
234: nfsstats.srvrpccnt[NFSPROC_CREATE],
235: nfsstats.srvrpccnt[NFSPROC_REMOVE]);
236: printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
237: "Rename", "Link", "Symlink", "Mkdir", "Rmdir",
238: "Readdir", "Statfs", "RdirLook");
239: printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
240: nfsstats.srvrpccnt[NFSPROC_RENAME],
241: nfsstats.srvrpccnt[NFSPROC_LINK],
242: nfsstats.srvrpccnt[NFSPROC_SYMLINK],
243: nfsstats.srvrpccnt[NFSPROC_MKDIR],
244: nfsstats.srvrpccnt[NFSPROC_RMDIR],
245: nfsstats.srvrpccnt[NFSPROC_READDIR],
246: nfsstats.srvrpccnt[NFSPROC_STATFS],
247: nfsstats.srvrpccnt[NQNFSPROC_READDIRLOOK]);
248: printf("%9.9s %9.9s %9.9s\n",
249: "GLease", "Vacate", "Evict");
250: printf("%9d %9d %9d\n",
251: nfsstats.srvrpccnt[NQNFSPROC_GETLEASE],
252: nfsstats.srvrpccnt[NQNFSPROC_VACATED],
253: nfsstats.srvrpccnt[NQNFSPROC_EVICTED]);
254: printf("Server Ret-Failed\n");
255: printf("%17d\n", nfsstats.srvrpc_errs);
256: printf("Server Faults\n");
257: printf("%13d\n", nfsstats.srv_errs);
258: printf("Server Cache Stats:\n");
259: printf("%9.9s %9.9s %9.9s %9.9s\n",
260: "Inprog", "Idem", "Non-idem", "Misses");
261: printf("%9d %9d %9d %9d\n",
262: nfsstats.srvcache_inproghits,
263: nfsstats.srvcache_idemdonehits,
264: nfsstats.srvcache_nonidemdonehits,
265: nfsstats.srvcache_misses);
266: printf("Server Lease Stats:\n");
267: printf("%9.9s %9.9s %9.9s\n",
268: "Leases", "PeakL", "GLeases");
269: printf("%9d %9d %9d\n",
270: nfsstats.srvnqnfs_leases,
271: nfsstats.srvnqnfs_maxleases,
272: nfsstats.srvnqnfs_getleases);
273: }
274:
275: u_char signalled; /* set if alarm goes off "early" */
276:
277: /*
278: * Print a running summary of nfs statistics.
279: * Repeat display every interval seconds, showing statistics
280: * collected over that interval. Assumes that interval is non-zero.
281: * First line printed at top of screen is always cumulative.
282: */
283: void
284: sidewaysintpr(interval, off)
285: u_int interval;
286: u_long off;
287: {
288: struct nfsstats nfsstats, lastst;
289: int hdrcnt, oldmask;
290: void catchalarm();
291:
292: (void)signal(SIGALRM, catchalarm);
293: signalled = 0;
294: (void)alarm(interval);
295: bzero((caddr_t)&lastst, sizeof(lastst));
296:
297: for (hdrcnt = 1;;) {
298: if (!--hdrcnt) {
299: printhdr();
300: hdrcnt = 20;
301: }
302: if (kvm_read(kd, off, (char *)&nfsstats, sizeof nfsstats) < 0) {
303: fprintf(stderr, "nfsstat: kvm_read failed\n");
304: exit(1);
305: }
306: printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n",
307: nfsstats.rpccnt[1]-lastst.rpccnt[1],
308: nfsstats.rpccnt[4]-lastst.rpccnt[4],
309: nfsstats.rpccnt[5]-lastst.rpccnt[5],
310: nfsstats.rpccnt[6]-lastst.rpccnt[6],
311: nfsstats.rpccnt[8]-lastst.rpccnt[8],
312: nfsstats.rpccnt[11]-lastst.rpccnt[11],
313: nfsstats.rpccnt[12]-lastst.rpccnt[12],
314: nfsstats.rpccnt[16]-lastst.rpccnt[16]);
315: printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n",
316: nfsstats.srvrpccnt[1]-lastst.srvrpccnt[1],
317: nfsstats.srvrpccnt[4]-lastst.srvrpccnt[4],
318: nfsstats.srvrpccnt[5]-lastst.srvrpccnt[5],
319: nfsstats.srvrpccnt[6]-lastst.srvrpccnt[6],
320: nfsstats.srvrpccnt[8]-lastst.srvrpccnt[8],
321: nfsstats.srvrpccnt[11]-lastst.srvrpccnt[11],
322: nfsstats.srvrpccnt[12]-lastst.srvrpccnt[12],
323: nfsstats.srvrpccnt[16]-lastst.srvrpccnt[16]);
324: lastst = nfsstats;
325: fflush(stdout);
326: oldmask = sigblock(sigmask(SIGALRM));
327: if (!signalled)
328: sigpause(0);
329: sigsetmask(oldmask);
330: signalled = 0;
331: (void)alarm(interval);
332: }
333: /*NOTREACHED*/
334: }
335:
336: void
337: printhdr()
338: {
339: printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n",
340: "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename",
341: "Link", "Readdir");
342: fflush(stdout);
343: }
344:
345: /*
346: * Called if an interval expires before sidewaysintpr has completed a loop.
347: * Sets a flag to not wait for the alarm.
348: */
349: void
350: catchalarm()
351: {
352: signalled = 1;
353: }
354:
355: void
356: usage()
357: {
358: (void)fprintf(stderr,
359: "usage: nfsstat [-M core] [-N system] [-w interval]\n");
360: exit(1);
361: }
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