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