1 /* 2 * Copyright (c) 1998 Kenneth D. Merry. 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 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 /*- 29 * Copyright (c) 1980, 1992, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 4. Neither the name of the University nor the names of its contributors 41 * may be used to endorse or promote products derived from this software 42 * without specific prior written permission. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 47 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 54 * SUCH DAMAGE. 55 */ 56 57 #include <sys/cdefs.h> 58 59 __FBSDID("$FreeBSD$"); 60 61 #ifdef lint 62 static const char sccsid[] = "@(#)disks.c 8.1 (Berkeley) 6/6/93"; 63 #endif 64 65 #include <sys/types.h> 66 #include <sys/devicestat.h> 67 #include <sys/resource.h> 68 69 #include <ctype.h> 70 #include <devstat.h> 71 #include <err.h> 72 #include <stdlib.h> 73 #include <string.h> 74 75 #include "systat.h" 76 #include "extern.h" 77 #include "devs.h" 78 79 typedef enum { 80 DS_MATCHTYPE_NONE, 81 DS_MATCHTYPE_SPEC, 82 DS_MATCHTYPE_PATTERN 83 } last_match_type; 84 85 last_match_type last_type; 86 struct device_selection *dev_select; 87 long generation; 88 int num_devices, num_selected; 89 int num_selections; 90 long select_generation; 91 struct devstat_match *matches = NULL; 92 int num_matches = 0; 93 char **specified_devices; 94 int num_devices_specified = 0; 95 96 static int dsmatchselect(const char *args, devstat_select_mode select_mode, 97 int maxshowdevs, struct statinfo *s1); 98 static int dsselect(const char *args, devstat_select_mode select_mode, 99 int maxshowdevs, struct statinfo *s1); 100 101 int 102 dsinit(int maxshowdevs, struct statinfo *s1, struct statinfo *s2 __unused, 103 struct statinfo *s3 __unused) 104 { 105 106 /* 107 * Make sure that the userland devstat version matches the kernel 108 * devstat version. If not, exit and print a message informing 109 * the user of his mistake. 110 */ 111 if (devstat_checkversion(NULL) < 0) 112 errx(1, "%s", devstat_errbuf); 113 114 generation = 0; 115 num_devices = 0; 116 num_selected = 0; 117 num_selections = 0; 118 select_generation = 0; 119 last_type = DS_MATCHTYPE_NONE; 120 121 if (devstat_getdevs(NULL, s1) == -1) 122 errx(1, "%s", devstat_errbuf); 123 124 num_devices = s1->dinfo->numdevs; 125 generation = s1->dinfo->generation; 126 127 dev_select = NULL; 128 129 /* 130 * At this point, selectdevs will almost surely indicate that the 131 * device list has changed, so we don't look for return values of 0 132 * or 1. If we get back -1, though, there is an error. 133 */ 134 if (devstat_selectdevs(&dev_select, &num_selected, &num_selections, 135 &select_generation, generation, s1->dinfo->devices, num_devices, 136 NULL, 0, NULL, 0, DS_SELECT_ADD, maxshowdevs, 0) == -1) 137 errx(1, "%d %s", __LINE__, devstat_errbuf); 138 139 return(1); 140 } 141 142 int 143 dscmd(const char *cmd, const char *args, int maxshowdevs, struct statinfo *s1) 144 { 145 int retval; 146 147 if (prefix(cmd, "display") || prefix(cmd, "add")) 148 return(dsselect(args, DS_SELECT_ADDONLY, maxshowdevs, s1)); 149 if (prefix(cmd, "ignore") || prefix(cmd, "delete")) 150 return(dsselect(args, DS_SELECT_REMOVE, maxshowdevs, s1)); 151 if (prefix(cmd, "show") || prefix(cmd, "only")) 152 return(dsselect(args, DS_SELECT_ONLY, maxshowdevs, s1)); 153 if (prefix(cmd, "type") || prefix(cmd, "match")) 154 return(dsmatchselect(args, DS_SELECT_ONLY, maxshowdevs, s1)); 155 if (prefix(cmd, "refresh")) { 156 retval = devstat_selectdevs(&dev_select, &num_selected, 157 &num_selections, &select_generation, generation, 158 s1->dinfo->devices, num_devices, 159 (last_type ==DS_MATCHTYPE_PATTERN) ? matches : NULL, 160 (last_type ==DS_MATCHTYPE_PATTERN) ? num_matches : 0, 161 (last_type == DS_MATCHTYPE_SPEC) ?specified_devices : NULL, 162 (last_type == DS_MATCHTYPE_SPEC) ?num_devices_specified : 0, 163 (last_type == DS_MATCHTYPE_NONE) ? DS_SELECT_ADD : 164 DS_SELECT_ADDONLY, maxshowdevs, 0); 165 if (retval == -1) { 166 warnx("%s", devstat_errbuf); 167 return(0); 168 } else if (retval == 1) 169 return(2); 170 } 171 if (prefix(cmd, "drives")) { 172 int i; 173 move(CMDLINE, 0); 174 clrtoeol(); 175 for (i = 0; i < num_devices; i++) { 176 printw("%s%d ", s1->dinfo->devices[i].device_name, 177 s1->dinfo->devices[i].unit_number); 178 } 179 return(1); 180 } 181 return(0); 182 } 183 184 static int 185 dsmatchselect(const char *args, devstat_select_mode select_mode, int maxshowdevs, 186 struct statinfo *s1) 187 { 188 char **tempstr, *tmpstr, *tmpstr1; 189 char *tstr[100]; 190 int num_args = 0; 191 int i; 192 int retval = 0; 193 194 /* 195 * Break the (pipe delimited) input string out into separate 196 * strings. 197 */ 198 tmpstr = tmpstr1 = strdup(args); 199 for (tempstr = tstr, num_args = 0; 200 (*tempstr = strsep(&tmpstr1, "|")) != NULL && (num_args < 100); 201 num_args++) 202 if (**tempstr != '\0') 203 if (++tempstr >= &tstr[100]) 204 break; 205 free(tmpstr); 206 207 if (num_args > 99) { 208 warnx("dsmatchselect: too many match arguments"); 209 return(0); 210 } 211 212 /* 213 * If we've gone through the matching code before, clean out 214 * previously used memory. 215 */ 216 if (num_matches > 0) { 217 free(matches); 218 matches = NULL; 219 num_matches = 0; 220 } 221 222 for (i = 0; i < num_args; i++) { 223 if (devstat_buildmatch(tstr[i], &matches, &num_matches) != 0) { 224 warnx("%s", devstat_errbuf); 225 return(0); 226 } 227 } 228 if (num_args > 0) { 229 230 last_type = DS_MATCHTYPE_PATTERN; 231 232 retval = devstat_selectdevs(&dev_select, &num_selected, 233 &num_selections, &select_generation, generation, 234 s1->dinfo->devices, num_devices, matches, num_matches, 235 NULL, 0, select_mode, maxshowdevs, 0); 236 if (retval == -1) 237 err(1, "device selection error"); 238 else if (retval == 1) 239 return(2); 240 } 241 return(1); 242 } 243 244 static int 245 dsselect(const char *args, devstat_select_mode select_mode, int maxshowdevs, 246 struct statinfo *s1) 247 { 248 char *cp, *tmpstr, *tmpstr1, *buffer; 249 int i; 250 int retval = 0; 251 252 /* 253 * If we've gone through this code before, free previously 254 * allocated resources. 255 */ 256 if (num_devices_specified > 0) { 257 for (i = 0; i < num_devices_specified; i++) 258 free(specified_devices[i]); 259 free(specified_devices); 260 specified_devices = NULL; 261 num_devices_specified = 0; 262 } 263 264 /* do an initial malloc */ 265 specified_devices = (char **)malloc(sizeof(char *)); 266 267 tmpstr = tmpstr1 = strdup(args); 268 cp = strchr(tmpstr1, '\n'); 269 if (cp) 270 *cp = '\0'; 271 for (;;) { 272 for (cp = tmpstr1; *cp && isspace(*cp); cp++) 273 ; 274 tmpstr1 = cp; 275 for (; *cp && !isspace(*cp); cp++) 276 ; 277 if (*cp) 278 *cp++ = '\0'; 279 if (cp - args == 0) 280 break; 281 for (i = 0; i < num_devices; i++) { 282 asprintf(&buffer, "%s%d", dev_select[i].device_name, 283 dev_select[i].unit_number); 284 if (strcmp(buffer, tmpstr1) == 0) { 285 286 num_devices_specified++; 287 288 specified_devices =(char **)realloc( 289 specified_devices, 290 sizeof(char *) * 291 num_devices_specified); 292 specified_devices[num_devices_specified -1]= 293 strdup(tmpstr1); 294 free(buffer); 295 296 break; 297 } 298 else 299 free(buffer); 300 } 301 if (i >= num_devices) 302 error("%s: unknown drive", args); 303 args = cp; 304 } 305 free(tmpstr); 306 307 if (num_devices_specified > 0) { 308 last_type = DS_MATCHTYPE_SPEC; 309 310 retval = devstat_selectdevs(&dev_select, &num_selected, 311 &num_selections, &select_generation, generation, 312 s1->dinfo->devices, num_devices, NULL, 0, 313 specified_devices, num_devices_specified, 314 select_mode, maxshowdevs, 0); 315 if (retval == -1) 316 err(1, "%s", devstat_errbuf); 317 else if (retval == 1) 318 return(2); 319 } 320 return(1); 321 } 322