1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 /* 34 * devfree key [device [...]] 35 */ 36 37 #include <sys/types.h> 38 #include <sys/param.h> 39 #include <stdio.h> 40 #include <errno.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <fmtmsg.h> 44 #include <devmgmt.h> 45 #include <values.h> 46 #include <devtab.h> 47 48 49 /* 50 * Local definitions 51 * TRUE Boolean TRUE value 52 * FALSE Boolean FALSE value 53 */ 54 #ifndef TRUE 55 #define TRUE ('t') 56 #endif 57 58 #ifndef FALSE 59 #define FALSE 0 60 #endif 61 62 63 /* 64 * Exit codes: 65 * EX_OK Exit code for all went well 66 * EX_ERROR Exit code for something failed 67 * EX_TBLERR Exit code for errors relating to device or lock tables 68 * EX_NOFREE Exit code for free failed 69 */ 70 71 #define EX_OK 0 72 #define EX_ERROR 1 73 #define EX_TBLERR 2 74 #define EX_NOFREE 3 75 76 77 /* 78 * Messages 79 * M_USAGE Usage error 80 * M_INVKEY Invalid key specified 81 * M_NOTRSVD Attempting to free something not alloc'd 82 * M_NOTONKEY Attempting to free with wrong key 83 * M_DEVTAB Error opening the device table 84 * M_RSVTAB Error opening the device-reservation table 85 * M_ERROR Some internal error 86 */ 87 88 #define M_USAGE "usage: devfree key [device [...]]" 89 #define M_INVKEY "Invalid key: %s" 90 #define M_NOTRSVD "Device not reserved: %s" 91 #define M_NOTONKEY "Cannot unreserve device: %s" 92 #define M_DEVTAB "Cannot open the device table: %s" 93 #define M_RSVTAB "Cannot open the device-reservation table: %s" 94 #define M_ERROR "Internal error, errno=%d" 95 96 97 /* 98 * Local functions and static data 99 * stdmsg(r,l,s,m) Macro for standard message generation 100 * r MM_NRECOV or MM_RECOV (recoverability) 101 * l Label 102 * s Severity 103 * m Message 104 * lbl Buffer for the label-component of a message. 105 * msg Buffer for the text-component of a message. 106 */ 107 108 #define stdmsg(r,l,s,m) (void) fmtmsg(MM_PRINT|MM_UTIL|r,l,s,m,MM_NULLACT,MM_NULLTAG) 109 110 static char lbl[MM_MXLABELLN+1]; 111 static char msg[MM_MXTXTLN+1]; 112 113 /* 114 * devfree key [device [device [...]]] 115 * 116 * This command frees devices that have been reserved using 117 * the devreserv command (or the devreserv() function). 118 * 119 * Options: None 120 * 121 * Arguments: 122 * key The key on which the device to free was allocated on. 123 * If omitted, all keys are assumed. 124 * device The device to free. If omitted, all devices allocated 125 * using the key are freed. 126 * 127 * Command Values: 128 * EX_OK 0 Device(s) successfully freed 129 * EX_ERROR 1 A syntax error or other error occurred 130 * EX_TBLERR 2 A problem with device management tables 131 * EX_NOFREE 3 A requested device couldn't be freed 132 */ 133 134 int 135 main(int argc, char *argv[]) 136 { 137 /* Automatics */ 138 char **argp; /* Ptr to current argument */ 139 struct reservdev **rsvd; /* Ptr to list of locks */ 140 struct reservdev **plk; /* Running ptr to locks */ 141 char *devtab; /* Ptr to device table name */ 142 char *rsvtab; /* Ptr to dev-rsv-tbl name */ 143 char *p; /* Temp char pointer */ 144 int argcount; /* Number of args on cmd */ 145 long lkey; /* Key for locking (long) */ 146 int key; /* Key for locking */ 147 int halt; /* TRUE if we need to stop */ 148 int sev; /* Message severity */ 149 int exitcode; /* Value of command */ 150 int syntaxerr; /* Flag, TRUE if syntax error */ 151 int exitcd; /* Value for exit() */ 152 int c; /* Option character */ 153 154 155 /* 156 * Initializations 157 */ 158 159 /* Build a message label */ 160 if (p = strrchr(argv[0], '/')) p++; 161 else p = argv[0]; 162 (void) strlcat(strcpy(lbl, "UX:"), p, sizeof(lbl)); 163 164 /* Make only the text component of messages appear (remove this in SVR4.1) */ 165 (void) putenv("MSGVERB=text"); 166 167 168 /* 169 * Parse the options from the command line 170 */ 171 172 opterr = 0; 173 syntaxerr = FALSE; 174 while ((c = getopt(argc, argv, "")) != EOF) switch(c) { 175 default: 176 syntaxerr = FALSE; 177 break; 178 } 179 180 181 /* Argument initializations */ 182 argp = &argv[optind]; 183 if ((argcount = argc-optind) < 1) syntaxerr = TRUE; 184 185 186 /* If there's (an obvious) syntax error, write a message and quit */ 187 if (syntaxerr) { 188 stdmsg(MM_NRECOV, lbl, MM_ERROR, M_USAGE); 189 exit(EX_ERROR); 190 } 191 192 193 /* 194 * devfree key 195 * 196 * Free all devices that have been reserved using the key "key". 197 */ 198 199 if (argcount == 1) { 200 201 /* Extract the key from the command */ 202 lkey = strtol(*argp, &p, 10); 203 if (*p || (lkey <= 0) || (lkey > MAXINT)) { 204 (void) snprintf(msg, sizeof (msg), M_INVKEY, *argp); 205 stdmsg(MM_NRECOV, lbl, MM_ERROR, msg); 206 exit(EX_ERROR); 207 } 208 key = (int) lkey; 209 210 /* Get the list of devices currently reserved */ 211 if (rsvd = reservdev()) { 212 exitcd = EX_OK; 213 for (plk = rsvd ; *plk ; plk++) { 214 if ((*plk)->key == key) 215 if (devfree(key, (*plk)->devname) != 0) 216 exitcd = EX_NOFREE; 217 } 218 } else { 219 if (((errno == ENOENT) || (errno == EACCES)) && (rsvtab = _rsvtabpath())) { 220 (void) snprintf(msg, sizeof(msg), M_RSVTAB, rsvtab); 221 exitcd = EX_TBLERR; 222 sev = MM_ERROR; 223 } else { 224 (void) snprintf(msg, sizeof (msg), M_ERROR, errno); 225 exitcd = EX_ERROR; 226 sev = MM_HALT; 227 } 228 stdmsg(MM_NRECOV, lbl, sev, msg); 229 } 230 231 /* Done */ 232 exit(exitcd); 233 } 234 235 236 /* 237 * devfree key device [...] 238 * 239 * Free specific devices 240 */ 241 242 /* Open the device file (if there's one to be opened) */ 243 if (!_opendevtab("r")) { 244 if (devtab = _devtabpath()) { 245 (void) snprintf(msg, sizeof(msg), M_DEVTAB, devtab); 246 exitcd = EX_TBLERR; 247 sev = MM_ERROR; 248 } else { 249 (void) snprintf(msg, sizeof (msg), M_ERROR, errno); 250 exitcd = EX_ERROR; 251 sev = MM_HALT; 252 } 253 stdmsg(MM_NRECOV, lbl, sev, msg); 254 exit(exitcd); 255 } 256 257 /* Extract the key from the command */ 258 lkey = strtol(*argp, &p, 10); 259 if (*p || (lkey <= 0) || (lkey > MAXINT)) { 260 (void) snprintf(msg, sizeof(msg), M_INVKEY, *argp); 261 stdmsg(MM_NRECOV, lbl, MM_ERROR, msg); 262 exit(EX_ERROR); 263 } 264 key = (int) lkey; 265 argp++; 266 267 /* Loop through the list of devices to free */ 268 exitcode = EX_OK; 269 halt = FALSE; 270 while (!halt && *argp) { 271 272 /* Try to free the device */ 273 if (devfree(key, *argp) != 0) { 274 if ((errno == EACCES) || (errno == ENOENT)) { 275 276 /* Can't get at reservation file */ 277 if (rsvtab = _rsvtabpath()) { 278 exitcode = EX_TBLERR; 279 (void) snprintf(msg, sizeof(msg), M_RSVTAB, rsvtab); 280 sev = MM_ERROR; 281 } 282 else { 283 exitcode = EX_ERROR; 284 (void) snprintf(msg, sizeof (msg), M_ERROR, errno); 285 sev = MM_HALT; 286 } 287 stdmsg(MM_NRECOV, lbl, sev, msg); 288 halt = TRUE; 289 } 290 else if (errno == EPERM) { 291 292 /* Wrong key */ 293 (void) snprintf(msg, sizeof(msg), M_NOTONKEY, *argp); 294 stdmsg(MM_NRECOV, lbl, MM_ERROR, msg); 295 exitcode = EX_NOFREE; 296 } 297 else if (errno == EINVAL) { 298 299 /* Device not reserved */ 300 (void) snprintf(msg, sizeof(msg), M_NOTRSVD, *argp); 301 stdmsg(MM_NRECOV, lbl, MM_ERROR, msg); 302 exitcode = EX_NOFREE; 303 } 304 305 else { 306 307 /* Some other strange error occurred */ 308 (void) snprintf(msg, sizeof (msg), M_ERROR, errno); 309 stdmsg(MM_NRECOV, lbl, MM_HALT, msg); 310 exitcode = EX_ERROR; 311 halt = TRUE; 312 } 313 } 314 argp++; 315 } 316 317 318 /* Exit with the appropriate code */ 319 return(exitcode); 320 } 321