nfsdumpstate.c revision 347174
1/*- 2 * Copyright (c) 2009 Rick Macklem, University of Guelph 3 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: stable/10/usr.sbin/nfsdumpstate/nfsdumpstate.c 347174 2019-05-06 03:20:02Z rmacklem $"); 30 31#include <sys/param.h> 32#include <sys/linker.h> 33#include <sys/module.h> 34#include <sys/socket.h> 35 36#include <arpa/inet.h> 37 38#include <netinet/in.h> 39 40#include <nfs/nfssvc.h> 41 42#include <fs/nfs/rpcv2.h> 43#include <fs/nfs/nfsproto.h> 44#include <fs/nfs/nfskpiport.h> 45#include <fs/nfs/nfs.h> 46 47#include <ctype.h> 48#include <err.h> 49#include <errno.h> 50#include <stdio.h> 51#include <stdlib.h> 52#include <string.h> 53#include <unistd.h> 54 55#define DUMPSIZE 10000 56 57static void dump_lockstate(char *); 58static void dump_openstate(void); 59static void usage(void); 60static char *open_flags(uint32_t); 61static char *deleg_flags(uint32_t); 62static char *lock_flags(uint32_t); 63static char *client_flags(uint32_t); 64 65static struct nfsd_dumpclients dp[DUMPSIZE]; 66static struct nfsd_dumplocks lp[DUMPSIZE]; 67static char flag_string[20]; 68 69int 70main(int argc, char **argv) 71{ 72 int ch, openstate; 73 char *lockfile; 74 75 if (modfind("nfsd") < 0) 76 errx(1, "nfsd not loaded - self terminating"); 77 openstate = 0; 78 lockfile = NULL; 79 while ((ch = getopt(argc, argv, "ol:")) != -1) 80 switch (ch) { 81 case 'o': 82 openstate = 1; 83 break; 84 case 'l': 85 lockfile = optarg; 86 break; 87 default: 88 usage(); 89 } 90 argc -= optind; 91 argv += optind; 92 93 if (openstate == 0 && lockfile == NULL) 94 openstate = 1; 95 else if (openstate != 0 && lockfile != NULL) 96 errx(1, "-o and -l cannot both be specified"); 97 98 /* 99 * For -o, dump all open/lock state. 100 * For -l, dump lock state for that file. 101 */ 102 if (openstate != 0) 103 dump_openstate(); 104 else 105 dump_lockstate(lockfile); 106 exit(0); 107} 108 109static void 110usage(void) 111{ 112 113 errx(1, "usage: nfsdumpstate [-o] [-l]"); 114} 115 116/* 117 * Dump all open/lock state. 118 */ 119static void 120dump_openstate(void) 121{ 122 struct nfsd_dumplist dumplist; 123 int cnt, i; 124#ifdef INET6 125 char nbuf[INET6_ADDRSTRLEN]; 126#endif 127 128 dumplist.ndl_size = DUMPSIZE; 129 dumplist.ndl_list = (void *)dp; 130 if (nfssvc(NFSSVC_DUMPCLIENTS, &dumplist) < 0) 131 errx(1, "Can't perform dump clients syscall"); 132 133 printf("%-13s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %-45s %s\n", 134 "Flags", "OpenOwner", "Open", "LockOwner", 135 "Lock", "Deleg", "OldDeleg", "Clientaddr", "ClientID"); 136 /* 137 * Loop through results, printing them out. 138 */ 139 cnt = 0; 140 while (dp[cnt].ndcl_clid.nclid_idlen > 0 && cnt < DUMPSIZE) { 141 printf("%-13s ", client_flags(dp[cnt].ndcl_flags)); 142 printf("%9d %9d %9d %9d %9d %9d ", 143 dp[cnt].ndcl_nopenowners, 144 dp[cnt].ndcl_nopens, 145 dp[cnt].ndcl_nlockowners, 146 dp[cnt].ndcl_nlocks, 147 dp[cnt].ndcl_ndelegs, 148 dp[cnt].ndcl_nolddelegs); 149 switch (dp[cnt].ndcl_addrfam) { 150#ifdef INET 151 case AF_INET: 152 printf("%-45s ", 153 inet_ntoa(dp[cnt].ndcl_cbaddr.sin_addr)); 154 break; 155#endif 156#ifdef INET6 157 case AF_INET6: 158 if (inet_ntop(AF_INET6, &dp[cnt].ndcl_cbaddr.sin6_addr, 159 nbuf, sizeof(nbuf)) != NULL) 160 printf("%-45s ", nbuf); 161 else 162 printf("%-45s ", " "); 163 break; 164#endif 165 } 166 for (i = 0; i < dp[cnt].ndcl_clid.nclid_idlen; i++) 167 printf("%02x", dp[cnt].ndcl_clid.nclid_id[i]); 168 printf("\n"); 169 cnt++; 170 } 171} 172 173/* 174 * Dump the lock state for a file. 175 */ 176static void 177dump_lockstate(char *fname) 178{ 179 struct nfsd_dumplocklist dumplocklist; 180 int cnt, i; 181#ifdef INET6 182 char nbuf[INET6_ADDRSTRLEN]; 183#endif 184 185 dumplocklist.ndllck_size = DUMPSIZE; 186 dumplocklist.ndllck_list = (void *)lp; 187 dumplocklist.ndllck_fname = fname; 188 if (nfssvc(NFSSVC_DUMPLOCKS, &dumplocklist) < 0) 189 errx(1, "Can't dump locks for %s\n", fname); 190 191 printf("%-11s %-36s %-45s %s\n", 192 "Open/Lock", 193 " Stateid or Lock Range", 194 "Clientaddr", 195 "Owner and ClientID"); 196 /* 197 * Loop through results, printing them out. 198 */ 199 cnt = 0; 200 while (lp[cnt].ndlck_clid.nclid_idlen > 0 && cnt < DUMPSIZE) { 201 if (lp[cnt].ndlck_flags & NFSLCK_OPEN) 202 printf("%-11s %9d %08x %08x %08x ", 203 open_flags(lp[cnt].ndlck_flags), 204 lp[cnt].ndlck_stateid.seqid, 205 lp[cnt].ndlck_stateid.other[0], 206 lp[cnt].ndlck_stateid.other[1], 207 lp[cnt].ndlck_stateid.other[2]); 208 else if (lp[cnt].ndlck_flags & (NFSLCK_DELEGREAD | 209 NFSLCK_DELEGWRITE)) 210 printf("%-11s %9d %08x %08x %08x ", 211 deleg_flags(lp[cnt].ndlck_flags), 212 lp[cnt].ndlck_stateid.seqid, 213 lp[cnt].ndlck_stateid.other[0], 214 lp[cnt].ndlck_stateid.other[1], 215 lp[cnt].ndlck_stateid.other[2]); 216 else 217 printf("%-11s %17jd %17jd ", 218 lock_flags(lp[cnt].ndlck_flags), 219 lp[cnt].ndlck_first, 220 lp[cnt].ndlck_end); 221 switch (lp[cnt].ndlck_addrfam) { 222#ifdef INET 223 case AF_INET: 224 printf("%-45s ", 225 inet_ntoa(lp[cnt].ndlck_cbaddr.sin_addr)); 226 break; 227#endif 228#ifdef INET6 229 case AF_INET6: 230 if (inet_ntop(AF_INET6, &lp[cnt].ndlck_cbaddr.sin6_addr, 231 nbuf, sizeof(nbuf)) != NULL) 232 printf("%-45s ", nbuf); 233 else 234 printf("%-45s ", " "); 235 break; 236#endif 237 default: 238 printf("%-45s ", " "); 239 break; 240 } 241 for (i = 0; i < lp[cnt].ndlck_owner.nclid_idlen; i++) 242 printf("%02x", lp[cnt].ndlck_owner.nclid_id[i]); 243 printf(" "); 244 for (i = 0; i < lp[cnt].ndlck_clid.nclid_idlen; i++) 245 printf("%02x", lp[cnt].ndlck_clid.nclid_id[i]); 246 printf("\n"); 247 cnt++; 248 } 249} 250 251/* 252 * Parse the Open/Lock flag bits and create a string to be printed. 253 */ 254static char * 255open_flags(uint32_t flags) 256{ 257 int i, j; 258 259 strlcpy(flag_string, "Open ", sizeof (flag_string)); 260 i = 5; 261 if (flags & NFSLCK_READACCESS) 262 flag_string[i++] = 'R'; 263 if (flags & NFSLCK_WRITEACCESS) 264 flag_string[i++] = 'W'; 265 flag_string[i++] = ' '; 266 flag_string[i++] = 'D'; 267 flag_string[i] = 'N'; 268 j = i; 269 if (flags & NFSLCK_READDENY) 270 flag_string[i++] = 'R'; 271 if (flags & NFSLCK_WRITEDENY) 272 flag_string[i++] = 'W'; 273 if (i == j) 274 i++; 275 flag_string[i] = '\0'; 276 return (flag_string); 277} 278 279static char * 280deleg_flags(uint32_t flags) 281{ 282 283 if (flags & NFSLCK_DELEGREAD) 284 strlcpy(flag_string, "Deleg R", sizeof (flag_string)); 285 else 286 strlcpy(flag_string, "Deleg W", sizeof (flag_string)); 287 return (flag_string); 288} 289 290static char * 291lock_flags(uint32_t flags) 292{ 293 294 if (flags & NFSLCK_READ) 295 strlcpy(flag_string, "Lock R", sizeof (flag_string)); 296 else 297 strlcpy(flag_string, "Lock W", sizeof (flag_string)); 298 return (flag_string); 299} 300 301static char * 302client_flags(uint32_t flags) 303{ 304 305 flag_string[0] = '\0'; 306 if (flags & LCL_NEEDSCONFIRM) 307 strlcat(flag_string, "NC ", sizeof (flag_string)); 308 if (flags & LCL_CALLBACKSON) 309 strlcat(flag_string, "CB ", sizeof (flag_string)); 310 if (flags & LCL_GSS) 311 strlcat(flag_string, "GSS ", sizeof (flag_string)); 312 if (flags & LCL_ADMINREVOKED) 313 strlcat(flag_string, "REV", sizeof (flag_string)); 314 return (flag_string); 315} 316