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[] = "@(#)nfsstat.c 8.1 (Berkeley) 6/6/93"; 45 #endif /* not lint */ 46 47 #include <sys/param.h> 48 #if BSD >= 199103 49 #define NEWVM 50 #endif 51 #ifndef NEWVM 52 #include <sys/vmmac.h> 53 #include <sys/ucred.h> 54 #include <machine/pte.h> 55 #endif 56 #include <sys/mount.h> 57 #include <nfs/nfsv2.h> 58 #include <nfs/nfs.h> 59 #include <signal.h> 60 #include <fcntl.h> 61 #include <ctype.h> 62 #include <errno.h> 63 #include <kvm.h> 64 #include <nlist.h> 65 #include <unistd.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <paths.h> 70 71 struct nlist nl[] = { 72 #define N_NFSSTAT 0 73 { "_nfsstats" }, 74 "", 75 }; 76 kvm_t *kd; 77 78 void intpr(), printhdr(), sidewaysintpr(), usage(); 79 80 main(argc, argv) 81 int argc; 82 char **argv; 83 { 84 extern int optind; 85 extern char *optarg; 86 u_int interval; 87 int ch; 88 char *memf, *nlistf; 89 char errbuf[80]; 90 91 interval = 0; 92 memf = nlistf = NULL; 93 while ((ch = getopt(argc, argv, "M:N:w:")) != EOF) 94 switch(ch) { 95 case 'M': 96 memf = optarg; 97 break; 98 case 'N': 99 nlistf = optarg; 100 break; 101 case 'w': 102 interval = atoi(optarg); 103 break; 104 case '?': 105 default: 106 usage(); 107 } 108 argc -= optind; 109 argv += optind; 110 111 #define BACKWARD_COMPATIBILITY 112 #ifdef BACKWARD_COMPATIBILITY 113 if (*argv) { 114 interval = atoi(*argv); 115 if (*++argv) { 116 nlistf = *argv; 117 if (*++argv) 118 memf = *argv; 119 } 120 } 121 #endif 122 /* 123 * Discard setgid privileges if not the running kernel so that bad 124 * guys can't print interesting stuff from kernel memory. 125 */ 126 if (nlistf != NULL || memf != NULL) 127 setgid(getgid()); 128 129 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) { 130 fprintf(stderr, "nfsstat: kvm_openfiles: %s\n", errbuf); 131 exit(1); 132 } 133 if (kvm_nlist(kd, nl) != 0) { 134 fprintf(stderr, "nfsstat: kvm_nlist: can't get names\n"); 135 exit(1); 136 } 137 138 if (interval) 139 sidewaysintpr(interval, nl[N_NFSSTAT].n_value); 140 else 141 intpr(nl[N_NFSSTAT].n_value); 142 exit(0); 143 } 144 145 /* 146 * Print a description of the nfs stats. 147 */ 148 void 149 intpr(nfsstataddr) 150 u_long nfsstataddr; 151 { 152 struct nfsstats nfsstats; 153 154 if (kvm_read(kd, (u_long)nfsstataddr, (char *)&nfsstats, sizeof(struct nfsstats)) < 0) { 155 fprintf(stderr, "nfsstat: kvm_read failed\n"); 156 exit(1); 157 } 158 printf("Client Info:\n"); 159 printf("Rpc Counts:\n"); 160 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 161 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 162 "Write", "Create", "Remove"); 163 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 164 nfsstats.rpccnt[NFSPROC_GETATTR], 165 nfsstats.rpccnt[NFSPROC_SETATTR], 166 nfsstats.rpccnt[NFSPROC_LOOKUP], 167 nfsstats.rpccnt[NFSPROC_READLINK], 168 nfsstats.rpccnt[NFSPROC_READ], 169 nfsstats.rpccnt[NFSPROC_WRITE], 170 nfsstats.rpccnt[NFSPROC_CREATE], 171 nfsstats.rpccnt[NFSPROC_REMOVE]); 172 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 173 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 174 "Readdir", "Statfs", "RdirLook"); 175 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 176 nfsstats.rpccnt[NFSPROC_RENAME], 177 nfsstats.rpccnt[NFSPROC_LINK], 178 nfsstats.rpccnt[NFSPROC_SYMLINK], 179 nfsstats.rpccnt[NFSPROC_MKDIR], 180 nfsstats.rpccnt[NFSPROC_RMDIR], 181 nfsstats.rpccnt[NFSPROC_READDIR], 182 nfsstats.rpccnt[NFSPROC_STATFS], 183 nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]); 184 printf("%9.9s %9.9s %9.9s\n", 185 "GLease", "Vacate", "Evict"); 186 printf("%9d %9d %9d\n", 187 nfsstats.rpccnt[NQNFSPROC_GETLEASE], 188 nfsstats.rpccnt[NQNFSPROC_VACATED], 189 nfsstats.rpccnt[NQNFSPROC_EVICTED]); 190 printf("Rpc Info:\n"); 191 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 192 "TimedOut", "Invalid", "X Replies", "Retries", "Requests"); 193 printf("%9d %9d %9d %9d %9d\n", 194 nfsstats.rpctimeouts, 195 nfsstats.rpcinvalid, 196 nfsstats.rpcunexpected, 197 nfsstats.rpcretries, 198 nfsstats.rpcrequests); 199 printf("Cache Info:\n"); 200 printf("%9.9s %9.9s %9.9s %9.9s", 201 "Attr Hits", "Misses", "Lkup Hits", "Misses"); 202 printf(" %9.9s %9.9s %9.9s %9.9s\n", 203 "BioR Hits", "Misses", "BioW Hits", "Misses"); 204 printf("%9d %9d %9d %9d", 205 nfsstats.attrcache_hits, nfsstats.attrcache_misses, 206 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 207 printf(" %9d %9d %9d %9d\n", 208 nfsstats.biocache_reads-nfsstats.read_bios, 209 nfsstats.read_bios, 210 nfsstats.biocache_writes-nfsstats.write_bios, 211 nfsstats.write_bios); 212 printf("%9.9s %9.9s %9.9s %9.9s", 213 "BioRLHits", "Misses", "BioD Hits", "Misses"); 214 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 215 printf("%9d %9d %9d %9d", 216 nfsstats.biocache_readlinks-nfsstats.readlink_bios, 217 nfsstats.readlink_bios, 218 nfsstats.biocache_readdirs-nfsstats.readdir_bios, 219 nfsstats.readdir_bios); 220 printf(" %9d %9d\n", 221 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 222 printf("\nServer Info:\n"); 223 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 224 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 225 "Write", "Create", "Remove"); 226 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 227 nfsstats.srvrpccnt[NFSPROC_GETATTR], 228 nfsstats.srvrpccnt[NFSPROC_SETATTR], 229 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 230 nfsstats.srvrpccnt[NFSPROC_READLINK], 231 nfsstats.srvrpccnt[NFSPROC_READ], 232 nfsstats.srvrpccnt[NFSPROC_WRITE], 233 nfsstats.srvrpccnt[NFSPROC_CREATE], 234 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 235 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 236 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 237 "Readdir", "Statfs", "RdirLook"); 238 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 239 nfsstats.srvrpccnt[NFSPROC_RENAME], 240 nfsstats.srvrpccnt[NFSPROC_LINK], 241 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 242 nfsstats.srvrpccnt[NFSPROC_MKDIR], 243 nfsstats.srvrpccnt[NFSPROC_RMDIR], 244 nfsstats.srvrpccnt[NFSPROC_READDIR], 245 nfsstats.srvrpccnt[NFSPROC_STATFS], 246 nfsstats.srvrpccnt[NQNFSPROC_READDIRLOOK]); 247 printf("%9.9s %9.9s %9.9s\n", 248 "GLease", "Vacate", "Evict"); 249 printf("%9d %9d %9d\n", 250 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 251 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 252 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 253 printf("Server Ret-Failed\n"); 254 printf("%17d\n", nfsstats.srvrpc_errs); 255 printf("Server Faults\n"); 256 printf("%13d\n", nfsstats.srv_errs); 257 printf("Server Cache Stats:\n"); 258 printf("%9.9s %9.9s %9.9s %9.9s\n", 259 "Inprog", "Idem", "Non-idem", "Misses"); 260 printf("%9d %9d %9d %9d\n", 261 nfsstats.srvcache_inproghits, 262 nfsstats.srvcache_idemdonehits, 263 nfsstats.srvcache_nonidemdonehits, 264 nfsstats.srvcache_misses); 265 printf("Server Lease Stats:\n"); 266 printf("%9.9s %9.9s %9.9s\n", 267 "Leases", "PeakL", "GLeases"); 268 printf("%9d %9d %9d\n", 269 nfsstats.srvnqnfs_leases, 270 nfsstats.srvnqnfs_maxleases, 271 nfsstats.srvnqnfs_getleases); 272 } 273 274 u_char signalled; /* set if alarm goes off "early" */ 275 276 /* 277 * Print a running summary of nfs statistics. 278 * Repeat display every interval seconds, showing statistics 279 * collected over that interval. Assumes that interval is non-zero. 280 * First line printed at top of screen is always cumulative. 281 */ 282 void 283 sidewaysintpr(interval, off) 284 u_int interval; 285 u_long off; 286 { 287 struct nfsstats nfsstats, lastst; 288 int hdrcnt, oldmask; 289 void catchalarm(); 290 291 (void)signal(SIGALRM, catchalarm); 292 signalled = 0; 293 (void)alarm(interval); 294 bzero((caddr_t)&lastst, sizeof(lastst)); 295 296 for (hdrcnt = 1;;) { 297 if (!--hdrcnt) { 298 printhdr(); 299 hdrcnt = 20; 300 } 301 if (kvm_read(kd, off, (char *)&nfsstats, sizeof nfsstats) < 0) { 302 fprintf(stderr, "nfsstat: kvm_read failed\n"); 303 exit(1); 304 } 305 printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n", 306 nfsstats.rpccnt[1]-lastst.rpccnt[1], 307 nfsstats.rpccnt[4]-lastst.rpccnt[4], 308 nfsstats.rpccnt[5]-lastst.rpccnt[5], 309 nfsstats.rpccnt[6]-lastst.rpccnt[6], 310 nfsstats.rpccnt[8]-lastst.rpccnt[8], 311 nfsstats.rpccnt[11]-lastst.rpccnt[11], 312 nfsstats.rpccnt[12]-lastst.rpccnt[12], 313 nfsstats.rpccnt[16]-lastst.rpccnt[16]); 314 printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n", 315 nfsstats.srvrpccnt[1]-lastst.srvrpccnt[1], 316 nfsstats.srvrpccnt[4]-lastst.srvrpccnt[4], 317 nfsstats.srvrpccnt[5]-lastst.srvrpccnt[5], 318 nfsstats.srvrpccnt[6]-lastst.srvrpccnt[6], 319 nfsstats.srvrpccnt[8]-lastst.srvrpccnt[8], 320 nfsstats.srvrpccnt[11]-lastst.srvrpccnt[11], 321 nfsstats.srvrpccnt[12]-lastst.srvrpccnt[12], 322 nfsstats.srvrpccnt[16]-lastst.srvrpccnt[16]); 323 lastst = nfsstats; 324 fflush(stdout); 325 oldmask = sigblock(sigmask(SIGALRM)); 326 if (!signalled) 327 sigpause(0); 328 sigsetmask(oldmask); 329 signalled = 0; 330 (void)alarm(interval); 331 } 332 /*NOTREACHED*/ 333 } 334 335 void 336 printhdr() 337 { 338 printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n", 339 "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename", 340 "Link", "Readdir"); 341 fflush(stdout); 342 } 343 344 /* 345 * Called if an interval expires before sidewaysintpr has completed a loop. 346 * Sets a flag to not wait for the alarm. 347 */ 348 void 349 catchalarm() 350 { 351 signalled = 1; 352 } 353 354 void 355 usage() 356 { 357 (void)fprintf(stderr, 358 "usage: nfsstat [-M core] [-N system] [-w interval]\n"); 359 exit(1); 360 } 361