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 * $FreeBSD: src/usr.bin/systat/devs.c,v 1.4 1999/08/28 01:05:59 peter Exp $ 29 * $DragonFly: src/usr.bin/systat/devs.c,v 1.8 2008/11/10 04:59:45 swildner Exp $ 30 */ 31 /* 32 * Some code and ideas taken from the old disks.c. 33 * static char sccsid[] = "@(#)disks.c 8.1 (Berkeley) 6/6/93"; 34 */ 35 /*- 36 * Copyright (c) 1980, 1992, 1993 37 * The Regents of the University of California. All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Berkeley and its contributors. 51 * 4. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 */ 67 68 #include <sys/types.h> 69 #include <sys/devicestat.h> 70 71 #include <string.h> 72 #include <devstat.h> 73 #include <stdlib.h> 74 #include <ctype.h> 75 #include <err.h> 76 #include "systat.h" 77 #include "extern.h" 78 #include "devs.h" 79 80 typedef enum { 81 DS_MATCHTYPE_NONE, 82 DS_MATCHTYPE_SPEC, 83 DS_MATCHTYPE_PATTERN 84 } last_match_type; 85 86 last_match_type last_type; 87 struct device_selection *dev_select; 88 long generation; 89 int num_devices, num_selected; 90 int num_selections; 91 long select_generation; 92 struct devstat_match *matches = NULL; 93 int num_matches = 0; 94 char **specified_devices; 95 int num_devices_specified = 0; 96 97 static int dsmatchselect(char *args, devstat_select_mode select_mode, 98 int maxshowdevs, struct statinfo *s1); 99 static int dsselect(char *args, devstat_select_mode select_mode, 100 int maxshowdevs, struct statinfo *s1); 101 102 int 103 dsinit(int maxshowdevs, struct statinfo *s1, struct statinfo *s2 __unused, 104 struct statinfo *s3 __unused) 105 { 106 107 /* 108 * Make sure that the userland devstat version matches the kernel 109 * devstat version. If not, exit and print a message informing 110 * the user of his mistake. 111 */ 112 if (checkversion() < 0) 113 errx(1, "%s", devstat_errbuf); 114 115 generation = 0; 116 num_devices = 0; 117 num_selected = 0; 118 num_selections = 0; 119 select_generation = 0; 120 last_type = DS_MATCHTYPE_NONE; 121 122 if (getdevs(s1) == -1) 123 errx(1, "%s", devstat_errbuf); 124 125 num_devices = s1->dinfo->numdevs; 126 generation = s1->dinfo->generation; 127 128 dev_select = NULL; 129 130 /* 131 * At this point, selectdevs will almost surely indicate that the 132 * device list has changed, so we don't look for return values of 0 133 * or 1. If we get back -1, though, there is an error. 134 */ 135 if (selectdevs(&dev_select, &num_selected, &num_selections, 136 &select_generation, generation, s1->dinfo->devices, 137 num_devices, NULL, 0, NULL, 0, DS_SELECT_ADD, 138 maxshowdevs, 0) == -1) 139 errx(1, "%s", devstat_errbuf); 140 141 return(1); 142 } 143 144 int 145 dscmd(const char *cmd, char *args, int maxshowdevs, struct statinfo *s1) 146 { 147 int retval; 148 149 if (prefix(cmd, "display") || prefix(cmd, "add")) 150 return(dsselect(args, DS_SELECT_ADDONLY, maxshowdevs, s1)); 151 if (prefix(cmd, "ignore") || prefix(cmd, "delete")) 152 return(dsselect(args, DS_SELECT_REMOVE, maxshowdevs, s1)); 153 if (prefix(cmd, "show") || prefix(cmd, "only")) 154 return(dsselect(args, DS_SELECT_ONLY, maxshowdevs, s1)); 155 if (prefix(cmd, "type") || prefix(cmd, "match")) 156 return(dsmatchselect(args, DS_SELECT_ONLY, maxshowdevs, s1)); 157 if (prefix(cmd, "refresh")) { 158 retval = selectdevs(&dev_select, &num_selected, &num_selections, 159 &select_generation, generation, 160 s1->dinfo->devices, num_devices, 161 (last_type == DS_MATCHTYPE_PATTERN) ? 162 matches : NULL, 163 (last_type == DS_MATCHTYPE_PATTERN) ? 164 num_matches : 0, 165 (last_type == DS_MATCHTYPE_SPEC) ? 166 specified_devices : NULL, 167 (last_type == DS_MATCHTYPE_SPEC) ? 168 num_devices_specified : 0, 169 (last_type == DS_MATCHTYPE_NONE) ? 170 DS_SELECT_ADD : DS_SELECT_ADDONLY, 171 maxshowdevs, 0); 172 if (retval == -1) { 173 warnx("%s", devstat_errbuf); 174 return(0); 175 } else if (retval == 1) 176 return(2); 177 } 178 if (prefix(cmd, "drives")) { 179 int i; 180 move(CMDLINE, 0); 181 clrtoeol(); 182 for (i = 0; i < num_devices; i++) { 183 printw("%s%d ", s1->dinfo->devices[i].device_name, 184 s1->dinfo->devices[i].unit_number); 185 } 186 return(1); 187 } 188 return(0); 189 } 190 191 static int 192 dsmatchselect(char *args, devstat_select_mode select_mode, int maxshowdevs, 193 struct statinfo *s1) 194 { 195 char **tempstr; 196 char *tstr[100]; 197 int num_args = 0; 198 int i; 199 int retval = 0; 200 201 /* 202 * Break the (pipe delimited) input string out into separate 203 * strings. 204 */ 205 for (tempstr = tstr, num_args = 0; 206 (*tempstr = strsep(&args, "|")) != NULL && (num_args < 100); 207 num_args++) 208 if (**tempstr != '\0') 209 if (++tempstr >= &tstr[100]) 210 break; 211 212 if (num_args > 99) { 213 warnx("dsmatchselect: too many match arguments"); 214 return(0); 215 } 216 217 /* 218 * If we've gone through the matching code before, clean out 219 * previously used memory. 220 */ 221 if (num_matches > 0) { 222 free(matches); 223 matches = NULL; 224 num_matches = 0; 225 } 226 227 for (i = 0; i < num_args; i++) { 228 if (buildmatch(tstr[i], &matches, &num_matches) != 0) { 229 warnx("%s", devstat_errbuf); 230 return(0); 231 } 232 } 233 if (num_args > 0) { 234 235 last_type = DS_MATCHTYPE_PATTERN; 236 237 retval = selectdevs(&dev_select, &num_selected, &num_selections, 238 &select_generation, generation, 239 s1->dinfo->devices, num_devices, matches, 240 num_matches, NULL, 0, select_mode, 241 maxshowdevs, 0); 242 if (retval == -1) 243 err(1, "device selection error"); 244 else if (retval == 1) 245 return(2); 246 } 247 return(1); 248 } 249 250 static int 251 dsselect(char *args, devstat_select_mode select_mode, int maxshowdevs, 252 struct statinfo *s1) 253 { 254 char *cp; 255 int i; 256 int retval = 0; 257 258 /* 259 * If we've gone through this code before, free previously 260 * allocated resources. 261 */ 262 if (num_devices_specified > 0) { 263 for (i = 0; i < num_devices_specified; i++) 264 free(specified_devices[i]); 265 free(specified_devices); 266 specified_devices = NULL; 267 num_devices_specified = 0; 268 } 269 270 /* do an initial malloc */ 271 specified_devices = (char **)malloc(sizeof(char *)); 272 273 cp = strchr(args, '\n'); 274 if (cp) 275 *cp = '\0'; 276 for (;;) { 277 for (cp = args; *cp && isspace(*cp); cp++) 278 ; 279 args = cp; 280 for (; *cp && !isspace(*cp); cp++) 281 ; 282 if (*cp) 283 *cp++ = '\0'; 284 if (cp - args == 0) 285 break; 286 for (i = 0; i < num_devices; i++) { 287 char tmpstr[80]; 288 289 sprintf(tmpstr, "%s%d", dev_select[i].device_name, 290 dev_select[i].unit_number); 291 if (strcmp(args, tmpstr) == 0) { 292 293 num_devices_specified++; 294 295 specified_devices =(char **)realloc( 296 specified_devices, 297 sizeof(char *) * 298 num_devices_specified); 299 specified_devices[num_devices_specified -1]= 300 strdup(args); 301 302 break; 303 } 304 } 305 if (i >= num_devices) 306 error("%s: unknown drive", args); 307 args = cp; 308 } 309 310 if (num_devices_specified > 0) { 311 last_type = DS_MATCHTYPE_SPEC; 312 313 retval = selectdevs(&dev_select, &num_selected, &num_selections, 314 &select_generation, generation, 315 s1->dinfo->devices, num_devices, NULL, 0, 316 specified_devices, num_devices_specified, 317 select_mode, maxshowdevs, 0); 318 if (retval == -1) 319 err(1, "%s", devstat_errbuf); 320 else if (retval == 1) 321 return(2); 322 } 323 return(1); 324 } 325