dmctl.c revision 1.2.2.2
1 1.2.2.2 bouyer /* 2 1.2.2.2 bouyer * Copyright (c) 2010 The NetBSD Foundation, Inc. 3 1.2.2.2 bouyer * All rights reserved. 4 1.2.2.2 bouyer * 5 1.2.2.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 6 1.2.2.2 bouyer * by Adam Hamsik. 7 1.2.2.2 bouyer * 8 1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 9 1.2.2.2 bouyer * modification, are permitted provided that the following conditions 10 1.2.2.2 bouyer * are met: 11 1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 12 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer. 13 1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 14 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 15 1.2.2.2 bouyer * documentation and/or other materials provided with the distribution. 16 1.2.2.2 bouyer * 17 1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 1.2.2.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 1.2.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 1.2.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 1.2.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 1.2.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 1.2.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 1.2.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 1.2.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 1.2.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 1.2.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 28 1.2.2.2 bouyer */ 29 1.2.2.2 bouyer 30 1.2.2.2 bouyer #include <sys/types.h> 31 1.2.2.2 bouyer #include <sys/param.h> 32 1.2.2.2 bouyer 33 1.2.2.2 bouyer #include <ctype.h> 34 1.2.2.2 bouyer #include <err.h> 35 1.2.2.2 bouyer #include <errno.h> 36 1.2.2.2 bouyer #include <stdio.h> 37 1.2.2.2 bouyer #include <stdlib.h> 38 1.2.2.2 bouyer #include <string.h> 39 1.2.2.2 bouyer 40 1.2.2.2 bouyer #include <prop/proplib.h> 41 1.2.2.2 bouyer 42 1.2.2.2 bouyer #include <dm.h> 43 1.2.2.2 bouyer 44 1.2.2.2 bouyer #ifdef RUMP_ACTION 45 1.2.2.2 bouyer #include <rump/rump.h> 46 1.2.2.2 bouyer #include <rump/rumpclient.h> 47 1.2.2.2 bouyer #include <rump/rump_syscalls.h> 48 1.2.2.2 bouyer #endif 49 1.2.2.2 bouyer 50 1.2.2.2 bouyer /* dmctl command is used to communicate with device-mapper driver in NetBSD 51 1.2.2.2 bouyer * it uses libdm library to create and send required data to kernel. 52 1.2.2.2 bouyer * 53 1.2.2.2 bouyer * Main purpose of dmctl is to add posibility to use device-mapper driver 54 1.2.2.2 bouyer * from outside of LVM scope. 55 1.2.2.2 bouyer */ 56 1.2.2.2 bouyer 57 1.2.2.2 bouyer #define DMCTL_CMD_REQ_NODEVNAME 0 /* Command do not require device name */ 58 1.2.2.2 bouyer #define DMCTL_CMD_REQ_DEVNAME 1 /* Command require device name to work */ 59 1.2.2.2 bouyer #define DMCTL_CMD_REQ_NEWNAME 2 /* Command require device name and 60 1.2.2.2 bouyer newname to work */ 61 1.2.2.2 bouyer struct command { 62 1.2.2.2 bouyer const char *cmd_name; 63 1.2.2.2 bouyer const char *cmd_help; 64 1.2.2.2 bouyer const char *ioctl_cmd_name; 65 1.2.2.2 bouyer int min_args; 66 1.2.2.2 bouyer int (*cmd_func)(int, char *[], libdm_task_t); 67 1.2.2.2 bouyer }; 68 1.2.2.2 bouyer 69 1.2.2.2 bouyer int fd; /* file descriptor for device */ 70 1.2.2.2 bouyer const char *dvname; /* device name */ 71 1.2.2.2 bouyer const char *cmdname; /* command user issued */ 72 1.2.2.2 bouyer 73 1.2.2.2 bouyer static char * parse_stdin(char *); 74 1.2.2.2 bouyer 75 1.2.2.2 bouyer static int dmctl_get_version(int, char *[], libdm_task_t); 76 1.2.2.2 bouyer static int dmctl_get_targets(int, char *[], libdm_task_t); 77 1.2.2.2 bouyer static int dmctl_get_device_info(int, char *[], libdm_task_t); 78 1.2.2.2 bouyer static int dmctl_create_dev(int, char *[], libdm_task_t); 79 1.2.2.2 bouyer static int dmctl_dev_rename(int, char *[], libdm_task_t); 80 1.2.2.2 bouyer static int dmctl_dev_remove(int, char *[], libdm_task_t); 81 1.2.2.2 bouyer static int dmctl_dev_resume(int, char *[], libdm_task_t); 82 1.2.2.2 bouyer static int dmctl_dev_suspend(int, char *[], libdm_task_t); 83 1.2.2.2 bouyer static int dmctl_dev_deps(int, char *[], libdm_task_t); 84 1.2.2.2 bouyer static int dmctl_list_devices(int, char *[], libdm_task_t); 85 1.2.2.2 bouyer static int dmctl_table_reload(int, char *[], libdm_task_t); 86 1.2.2.2 bouyer static int dmctl_table_status(int, char *[], libdm_task_t); 87 1.2.2.2 bouyer void usage(void); 88 1.2.2.2 bouyer 89 1.2.2.2 bouyer struct command commands[] = { 90 1.2.2.2 bouyer { "version", 91 1.2.2.2 bouyer "Print driver and lib version.", 92 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_NODEVNAME, 93 1.2.2.2 bouyer dmctl_get_version }, 94 1.2.2.2 bouyer { "targets", 95 1.2.2.2 bouyer "List available kernel targets.", 96 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_NODEVNAME, 97 1.2.2.2 bouyer dmctl_get_targets }, 98 1.2.2.2 bouyer { "create", 99 1.2.2.2 bouyer "Create device with [dm device name].", 100 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_DEVNAME, 101 1.2.2.2 bouyer dmctl_create_dev }, 102 1.2.2.2 bouyer { "ls", 103 1.2.2.2 bouyer "List existing dm devices.", 104 1.2.2.2 bouyer "names", DMCTL_CMD_REQ_NODEVNAME, 105 1.2.2.2 bouyer dmctl_list_devices }, 106 1.2.2.2 bouyer { "info", 107 1.2.2.2 bouyer "Get info about device with [dm device name].", 108 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_DEVNAME, 109 1.2.2.2 bouyer dmctl_get_device_info }, 110 1.2.2.2 bouyer { "rename", 111 1.2.2.2 bouyer "Rename device with [dm device name] to [dm device new name].", 112 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_NEWNAME, 113 1.2.2.2 bouyer dmctl_dev_rename }, 114 1.2.2.2 bouyer { "remove", 115 1.2.2.2 bouyer "Remove device with [dm device name].", 116 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_DEVNAME, 117 1.2.2.2 bouyer dmctl_dev_remove }, 118 1.2.2.2 bouyer { "resume", 119 1.2.2.2 bouyer "Resume IO on dm device [dm device name].", 120 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_DEVNAME, 121 1.2.2.2 bouyer dmctl_dev_resume }, 122 1.2.2.2 bouyer { "suspend", 123 1.2.2.2 bouyer "Suspend IO on dm device [dm device name].", 124 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_DEVNAME, 125 1.2.2.2 bouyer dmctl_dev_suspend }, 126 1.2.2.2 bouyer { "deps", 127 1.2.2.2 bouyer "Print physical dependiences for dm device [dm device name].", 128 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_DEVNAME, 129 1.2.2.2 bouyer dmctl_dev_deps }, 130 1.2.2.2 bouyer { "reload", 131 1.2.2.2 bouyer "Switch active and passive tables for device with [dm device name].", 132 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_DEVNAME, 133 1.2.2.2 bouyer dmctl_table_reload }, 134 1.2.2.2 bouyer { "status", 135 1.2.2.2 bouyer "Print status for device with [dm device name].", 136 1.2.2.2 bouyer "table", DMCTL_CMD_REQ_DEVNAME, 137 1.2.2.2 bouyer dmctl_table_status }, 138 1.2.2.2 bouyer { "table", 139 1.2.2.2 bouyer "Print active table for device with [dm device name].", 140 1.2.2.2 bouyer NULL, DMCTL_CMD_REQ_DEVNAME, 141 1.2.2.2 bouyer dmctl_table_status }, 142 1.2.2.2 bouyer { NULL, 143 1.2.2.2 bouyer NULL, 144 1.2.2.2 bouyer NULL, 0, 145 1.2.2.2 bouyer NULL }, 146 1.2.2.2 bouyer }; 147 1.2.2.2 bouyer 148 1.2.2.2 bouyer int 149 1.2.2.2 bouyer main(int argc, char *argv[]) 150 1.2.2.2 bouyer { 151 1.2.2.2 bouyer int i; 152 1.2.2.2 bouyer int oargc; 153 1.2.2.2 bouyer libdm_task_t task; 154 1.2.2.2 bouyer 155 1.2.2.2 bouyer oargc = 0; 156 1.2.2.2 bouyer 157 1.2.2.2 bouyer #ifdef RUMP_ACTION 158 1.2.2.2 bouyer if (rumpclient_init() == -1) 159 1.2.2.2 bouyer err(EXIT_FAILURE, "rump client init failed"); 160 1.2.2.2 bouyer #endif 161 1.2.2.2 bouyer 162 1.2.2.2 bouyer /* Must have at least: device command */ 163 1.2.2.2 bouyer if (argc < 2) 164 1.2.2.2 bouyer usage(); 165 1.2.2.2 bouyer 166 1.2.2.2 bouyer /* Skip program name, get and skip device name and command. */ 167 1.2.2.2 bouyer cmdname = argv[1]; 168 1.2.2.2 bouyer if (argc > 2) { 169 1.2.2.2 bouyer oargc = 1; 170 1.2.2.2 bouyer dvname = argv[2]; 171 1.2.2.2 bouyer } 172 1.2.2.2 bouyer 173 1.2.2.2 bouyer if (argc > 3) { 174 1.2.2.2 bouyer argv += 3; 175 1.2.2.2 bouyer argc -= 3; 176 1.2.2.2 bouyer oargc = 2; 177 1.2.2.2 bouyer } else { 178 1.2.2.2 bouyer argv = 0; 179 1.2.2.2 bouyer argc = 0; 180 1.2.2.2 bouyer } 181 1.2.2.2 bouyer 182 1.2.2.2 bouyer for (i = 0; commands[i].cmd_name != NULL; i++) 183 1.2.2.2 bouyer if (strcmp(cmdname, commands[i].cmd_name) == 0) 184 1.2.2.2 bouyer break; 185 1.2.2.2 bouyer 186 1.2.2.2 bouyer if (commands[i].cmd_name == NULL) 187 1.2.2.2 bouyer errx(EXIT_FAILURE, "unknown command: %s", cmdname); 188 1.2.2.2 bouyer 189 1.2.2.2 bouyer if (commands[i].ioctl_cmd_name != NULL) 190 1.2.2.2 bouyer cmdname = commands[i].ioctl_cmd_name; 191 1.2.2.2 bouyer 192 1.2.2.2 bouyer if (oargc != commands[i].min_args) { 193 1.2.2.2 bouyer (void)fprintf(stderr, "Insufficient number of arguments for " 194 1.2.2.2 bouyer "command: %s specified\n", commands[i].cmd_name); 195 1.2.2.2 bouyer usage(); 196 1.2.2.2 bouyer } 197 1.2.2.2 bouyer 198 1.2.2.2 bouyer /* 199 1.2.2.2 bouyer * Create libdm task, and pass it to command handler later. 200 1.2.2.2 bouyer * Don't release it here because it will be replaced by different 201 1.2.2.2 bouyer * dictionary received from kernel after libdm_task_run. 202 1.2.2.2 bouyer */ 203 1.2.2.2 bouyer task = libdm_task_create(cmdname); 204 1.2.2.2 bouyer 205 1.2.2.2 bouyer (*commands[i].cmd_func)(argc, argv, task); 206 1.2.2.2 bouyer 207 1.2.2.2 bouyer return 0; 208 1.2.2.2 bouyer } 209 1.2.2.2 bouyer 210 1.2.2.2 bouyer /* 211 1.2.2.2 bouyer * Print library and kernel driver versions if command can be used only when 212 1.2.2.2 bouyer * major, minor number of library version is <= kernel. 213 1.2.2.2 bouyer */ 214 1.2.2.2 bouyer static int 215 1.2.2.2 bouyer dmctl_get_version(int argc __unused, char *argv[] __unused, libdm_task_t task) 216 1.2.2.2 bouyer { 217 1.2.2.2 bouyer uint32_t ver[3], size; 218 1.2.2.2 bouyer 219 1.2.2.2 bouyer size = libdm_task_get_cmd_version(task, ver, sizeof(ver)); 220 1.2.2.2 bouyer 221 1.2.2.2 bouyer printf("Library protocol version %d:%d:%d\n", ver[0], ver[1], ver[2]); 222 1.2.2.2 bouyer 223 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 224 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_get_version: libdm_task_run failed."); 225 1.2.2.2 bouyer 226 1.2.2.2 bouyer size = libdm_task_get_cmd_version(task, ver, 3); 227 1.2.2.2 bouyer printf("Kernel protocol version %d:%d:%d\n",ver[0], ver[1], ver[2]); 228 1.2.2.2 bouyer 229 1.2.2.2 bouyer libdm_task_destroy(task); 230 1.2.2.2 bouyer return 0; 231 1.2.2.2 bouyer } 232 1.2.2.2 bouyer 233 1.2.2.2 bouyer /* 234 1.2.2.2 bouyer * Get list of available targets from kernel and print them. 235 1.2.2.2 bouyer */ 236 1.2.2.2 bouyer static int 237 1.2.2.2 bouyer dmctl_get_targets(int argc __unused, char *argv[] __unused, libdm_task_t task) 238 1.2.2.2 bouyer { 239 1.2.2.2 bouyer libdm_cmd_t cmd; 240 1.2.2.2 bouyer libdm_iter_t iter; 241 1.2.2.2 bouyer libdm_target_t target; 242 1.2.2.2 bouyer uint32_t ver[3]; 243 1.2.2.2 bouyer 244 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 245 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_get_targets: libdm_task_run failed."); 246 1.2.2.2 bouyer 247 1.2.2.2 bouyer if ((cmd = libdm_task_get_cmd(task)) == NULL) 248 1.2.2.2 bouyer return ENOENT; 249 1.2.2.2 bouyer 250 1.2.2.2 bouyer iter = libdm_cmd_iter_create(cmd); 251 1.2.2.2 bouyer 252 1.2.2.2 bouyer while((target = libdm_cmd_get_target(iter)) != NULL){ 253 1.2.2.2 bouyer printf("Target name: %s\n", libdm_target_get_name(target)); 254 1.2.2.2 bouyer 255 1.2.2.2 bouyer libdm_target_get_version(target, ver, sizeof(ver)); 256 1.2.2.2 bouyer printf("Target version %d.%d.%d\n\n", ver[0], ver[1], ver[2]); 257 1.2.2.2 bouyer 258 1.2.2.2 bouyer libdm_target_destroy(target); 259 1.2.2.2 bouyer } 260 1.2.2.2 bouyer 261 1.2.2.2 bouyer libdm_iter_destroy(iter); 262 1.2.2.2 bouyer libdm_cmd_destroy(cmd); 263 1.2.2.2 bouyer libdm_task_destroy(task); 264 1.2.2.2 bouyer 265 1.2.2.2 bouyer return 0; 266 1.2.2.2 bouyer } 267 1.2.2.2 bouyer 268 1.2.2.2 bouyer /* 269 1.2.2.2 bouyer * Create device with name used as second parameter. 270 1.2.2.2 bouyer * TODO: Support for UUIDs here. 271 1.2.2.2 bouyer */ 272 1.2.2.2 bouyer static int 273 1.2.2.2 bouyer dmctl_create_dev(int argc __unused, char *argv[] __unused, libdm_task_t task) 274 1.2.2.2 bouyer { 275 1.2.2.2 bouyer 276 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 277 1.2.2.2 bouyer 278 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 279 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_create_dev: libdm_task_run failed."); 280 1.2.2.2 bouyer 281 1.2.2.2 bouyer libdm_task_destroy(task); 282 1.2.2.2 bouyer return 0; 283 1.2.2.2 bouyer } 284 1.2.2.2 bouyer 285 1.2.2.2 bouyer /* 286 1.2.2.2 bouyer * Get basic device info from device-mapper driver. 287 1.2.2.2 bouyer */ 288 1.2.2.2 bouyer static int 289 1.2.2.2 bouyer dmctl_get_device_info(int argc __unused, char *argv[] __unused, libdm_task_t task) 290 1.2.2.2 bouyer { 291 1.2.2.2 bouyer 292 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 293 1.2.2.2 bouyer 294 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 295 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_get_device_info: libdm_task_run failed.\n"); 296 1.2.2.2 bouyer 297 1.2.2.2 bouyer printf("Printing Device info for:\n"); 298 1.2.2.2 bouyer printf("Device name: \t\t%s\n", libdm_task_get_name(task)); 299 1.2.2.2 bouyer printf("Device uuid: \t\t%s\n", libdm_task_get_uuid(task)); 300 1.2.2.2 bouyer printf("Device minor: \t\t%d\n", libdm_task_get_minor(task)); 301 1.2.2.2 bouyer printf("Device target number: \t%d\n", libdm_task_get_target_num(task)); 302 1.2.2.2 bouyer printf("Device flags: \t\t%d\n", libdm_task_get_flags(task)); 303 1.2.2.2 bouyer 304 1.2.2.2 bouyer libdm_task_destroy(task); 305 1.2.2.2 bouyer return 0; 306 1.2.2.2 bouyer } 307 1.2.2.2 bouyer 308 1.2.2.2 bouyer /* 309 1.2.2.2 bouyer * List all device in device-mapper driver. 310 1.2.2.2 bouyer */ 311 1.2.2.2 bouyer static int 312 1.2.2.2 bouyer dmctl_list_devices(int argc __unused, char *argv[] __unused, libdm_task_t task) 313 1.2.2.2 bouyer { 314 1.2.2.2 bouyer libdm_cmd_t cmd; 315 1.2.2.2 bouyer libdm_iter_t iter; 316 1.2.2.2 bouyer libdm_dev_t dev; 317 1.2.2.2 bouyer 318 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 319 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_list_devices: libdm_task_run failed."); 320 1.2.2.2 bouyer 321 1.2.2.2 bouyer if ((cmd = libdm_task_get_cmd(task)) == NULL) 322 1.2.2.2 bouyer return ENOENT; 323 1.2.2.2 bouyer 324 1.2.2.2 bouyer iter = libdm_cmd_iter_create(cmd); 325 1.2.2.2 bouyer 326 1.2.2.2 bouyer while((dev = libdm_cmd_get_dev(iter)) != NULL){ 327 1.2.2.2 bouyer printf("Device name: %s, device minor: %d \n", 328 1.2.2.2 bouyer libdm_dev_get_name(dev), libdm_dev_get_minor(dev)); 329 1.2.2.2 bouyer libdm_dev_destroy(dev); 330 1.2.2.2 bouyer } 331 1.2.2.2 bouyer 332 1.2.2.2 bouyer libdm_iter_destroy(iter); 333 1.2.2.2 bouyer libdm_cmd_destroy(cmd); 334 1.2.2.2 bouyer libdm_task_destroy(task); 335 1.2.2.2 bouyer 336 1.2.2.2 bouyer return 0; 337 1.2.2.2 bouyer } 338 1.2.2.2 bouyer 339 1.2.2.2 bouyer /* 340 1.2.2.2 bouyer * Rename device to new name 341 1.2.2.2 bouyer */ 342 1.2.2.2 bouyer static int 343 1.2.2.2 bouyer dmctl_dev_rename(int argc __unused, char *argv[], libdm_task_t task) 344 1.2.2.2 bouyer { 345 1.2.2.2 bouyer libdm_cmd_t cmd; 346 1.2.2.2 bouyer 347 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 348 1.2.2.2 bouyer 349 1.2.2.2 bouyer cmd = libdm_cmd_create(); 350 1.2.2.2 bouyer libdm_dev_set_newname(argv[0], cmd); 351 1.2.2.2 bouyer libdm_task_set_cmd(cmd, task); 352 1.2.2.2 bouyer 353 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 354 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_dev_rename: libdm_task_run failed."); 355 1.2.2.2 bouyer 356 1.2.2.2 bouyer libdm_cmd_destroy(cmd); 357 1.2.2.2 bouyer libdm_task_destroy(task); 358 1.2.2.2 bouyer 359 1.2.2.2 bouyer return 0; 360 1.2.2.2 bouyer } 361 1.2.2.2 bouyer 362 1.2.2.2 bouyer /* 363 1.2.2.2 bouyer * Remove device from dm device list. 364 1.2.2.2 bouyer */ 365 1.2.2.2 bouyer static int 366 1.2.2.2 bouyer dmctl_dev_remove(int argc __unused, char *argv[] __unused, libdm_task_t task) 367 1.2.2.2 bouyer { 368 1.2.2.2 bouyer 369 1.2.2.2 bouyer if (dvname == NULL) 370 1.2.2.2 bouyer return (ENOENT); 371 1.2.2.2 bouyer 372 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 373 1.2.2.2 bouyer 374 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 375 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_dev_remove: libdm_task_run failed."); 376 1.2.2.2 bouyer 377 1.2.2.2 bouyer libdm_task_destroy(task); 378 1.2.2.2 bouyer return 0; 379 1.2.2.2 bouyer } 380 1.2.2.2 bouyer 381 1.2.2.2 bouyer /* 382 1.2.2.2 bouyer * Resume device which was suspended or created right now. 383 1.2.2.2 bouyer * Replace table in "active slot" witg table in "inactive slot". 384 1.2.2.2 bouyer */ 385 1.2.2.2 bouyer static int 386 1.2.2.2 bouyer dmctl_dev_resume(int argc __unused, char *argv[] __unused, libdm_task_t task) 387 1.2.2.2 bouyer { 388 1.2.2.2 bouyer 389 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 390 1.2.2.2 bouyer 391 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 392 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_dev_resume: libdm_task_run failed."); 393 1.2.2.2 bouyer 394 1.2.2.2 bouyer libdm_task_destroy(task); 395 1.2.2.2 bouyer return 0; 396 1.2.2.2 bouyer } 397 1.2.2.2 bouyer 398 1.2.2.2 bouyer /* 399 1.2.2.2 bouyer * Resume device which was suspended or created right now. 400 1.2.2.2 bouyer * Replace table in "active slot" with table in "inactive slot". 401 1.2.2.2 bouyer */ 402 1.2.2.2 bouyer static int 403 1.2.2.2 bouyer dmctl_dev_suspend(int argc __unused, char *argv[] __unused, libdm_task_t task) 404 1.2.2.2 bouyer { 405 1.2.2.2 bouyer 406 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 407 1.2.2.2 bouyer libdm_task_set_suspend_flag(task); 408 1.2.2.2 bouyer 409 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 410 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_dev_suspend: libdm_task_run failed."); 411 1.2.2.2 bouyer 412 1.2.2.2 bouyer libdm_task_destroy(task); 413 1.2.2.2 bouyer return 0; 414 1.2.2.2 bouyer } 415 1.2.2.2 bouyer 416 1.2.2.2 bouyer /* 417 1.2.2.2 bouyer * Get device dependiences from device-mapper. Device dependency is physical 418 1.2.2.2 bouyer * device on which dm device depends. 419 1.2.2.2 bouyer */ 420 1.2.2.2 bouyer static int 421 1.2.2.2 bouyer dmctl_dev_deps(int argc __unused, char *argv[] __unused, libdm_task_t task) 422 1.2.2.2 bouyer { 423 1.2.2.2 bouyer libdm_cmd_t cmd; 424 1.2.2.2 bouyer libdm_iter_t iter; 425 1.2.2.2 bouyer dev_t dev_deps; 426 1.2.2.2 bouyer 427 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 428 1.2.2.2 bouyer 429 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 430 1.2.2.2 bouyer err(EXIT_FAILURE, "dmctl_dev_deps: libdm_task_run failed."); 431 1.2.2.2 bouyer 432 1.2.2.2 bouyer if ((cmd = libdm_task_get_cmd(task)) == NULL) 433 1.2.2.2 bouyer return ENOENT; 434 1.2.2.2 bouyer 435 1.2.2.2 bouyer iter = libdm_cmd_iter_create(cmd); 436 1.2.2.2 bouyer 437 1.2.2.2 bouyer printf("Device %s dependiences \n", dvname); 438 1.2.2.2 bouyer 439 1.2.2.2 bouyer while((dev_deps = libdm_cmd_get_deps(iter)) != 0) 440 1.2.2.2 bouyer printf("major: %d minor: %d\n", major(dev_deps), minor(dev_deps)); 441 1.2.2.2 bouyer 442 1.2.2.2 bouyer libdm_iter_destroy(iter); 443 1.2.2.2 bouyer libdm_cmd_destroy(cmd); 444 1.2.2.2 bouyer libdm_task_destroy(task); 445 1.2.2.2 bouyer 446 1.2.2.2 bouyer return 0; 447 1.2.2.2 bouyer } 448 1.2.2.2 bouyer 449 1.2.2.2 bouyer /* 450 1.2.2.2 bouyer * Reload device table to get new one to use. 451 1.2.2.2 bouyer */ 452 1.2.2.2 bouyer static int 453 1.2.2.2 bouyer dmctl_table_reload(int argc, char *argv[], libdm_task_t task) 454 1.2.2.2 bouyer { 455 1.2.2.2 bouyer libdm_cmd_t cmd; 456 1.2.2.2 bouyer libdm_table_t table; 457 1.2.2.2 bouyer 458 1.2.2.2 bouyer char *params; 459 1.2.2.2 bouyer char *file_path; 460 1.2.2.2 bouyer char target[128]; 461 1.2.2.2 bouyer int len; 462 1.2.2.2 bouyer uint64_t start, length; 463 1.2.2.2 bouyer 464 1.2.2.2 bouyer file_path = NULL; 465 1.2.2.2 bouyer params = NULL; 466 1.2.2.2 bouyer 467 1.2.2.2 bouyer cmd = libdm_cmd_create(); 468 1.2.2.2 bouyer 469 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 470 1.2.2.2 bouyer 471 1.2.2.2 bouyer if (argc != 0) 472 1.2.2.2 bouyer file_path = argv[0]; 473 1.2.2.2 bouyer 474 1.2.2.2 bouyer while ((params = parse_stdin(file_path)) != NULL) { 475 1.2.2.2 bouyer table = libdm_table_create(); 476 1.2.2.2 bouyer 477 1.2.2.2 bouyer sscanf(params, "%"PRIu64" %"PRIu64" %s %n", &start, &length, target, &len); 478 1.2.2.2 bouyer 479 1.2.2.2 bouyer libdm_table_set_start(start, table); 480 1.2.2.2 bouyer libdm_table_set_length(length, table); 481 1.2.2.2 bouyer libdm_table_set_target(target, table); 482 1.2.2.2 bouyer libdm_table_set_params(params + len, table); 483 1.2.2.2 bouyer libdm_cmd_set_table(table, cmd); 484 1.2.2.2 bouyer 485 1.2.2.2 bouyer libdm_table_destroy(table); 486 1.2.2.2 bouyer 487 1.2.2.2 bouyer free(params); 488 1.2.2.2 bouyer } 489 1.2.2.2 bouyer 490 1.2.2.2 bouyer libdm_task_set_cmd(cmd, task); 491 1.2.2.2 bouyer 492 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 493 1.2.2.2 bouyer err(EXIT_FAILURE, "libdm_task_run: from dmctl_table_reload failed."); 494 1.2.2.2 bouyer 495 1.2.2.2 bouyer libdm_cmd_destroy(cmd); 496 1.2.2.2 bouyer libdm_task_destroy(task); 497 1.2.2.2 bouyer free(params); 498 1.2.2.2 bouyer 499 1.2.2.2 bouyer return 0; 500 1.2.2.2 bouyer } 501 1.2.2.2 bouyer 502 1.2.2.2 bouyer /* 503 1.2.2.2 bouyer * Get table status from device. 504 1.2.2.2 bouyer */ 505 1.2.2.2 bouyer static int 506 1.2.2.2 bouyer dmctl_table_status(int argc __unused, char *argv[] __unused, libdm_task_t task) 507 1.2.2.2 bouyer { 508 1.2.2.2 bouyer libdm_cmd_t cmd; 509 1.2.2.2 bouyer libdm_table_t table; 510 1.2.2.2 bouyer libdm_iter_t iter; 511 1.2.2.2 bouyer 512 1.2.2.2 bouyer libdm_task_set_name(dvname, task); 513 1.2.2.2 bouyer libdm_task_set_status_flag(task); 514 1.2.2.2 bouyer 515 1.2.2.2 bouyer if (libdm_task_run(task) != 0) 516 1.2.2.2 bouyer err(EXIT_FAILURE, "libdm_task_run"); 517 1.2.2.2 bouyer 518 1.2.2.2 bouyer if ((cmd = libdm_task_get_cmd(task)) == NULL) 519 1.2.2.2 bouyer return ENOENT; 520 1.2.2.2 bouyer 521 1.2.2.2 bouyer iter = libdm_cmd_iter_create(cmd); 522 1.2.2.2 bouyer 523 1.2.2.2 bouyer printf("Getting device table for device %s\n", dvname); 524 1.2.2.2 bouyer 525 1.2.2.2 bouyer while ((table = libdm_cmd_get_table(iter)) != NULL) { 526 1.2.2.2 bouyer printf("%10"PRIu64" %10"PRIu64" %s\n", 527 1.2.2.2 bouyer libdm_table_get_start(table), 528 1.2.2.2 bouyer libdm_table_get_length(table), 529 1.2.2.2 bouyer libdm_table_get_target(table)); 530 1.2.2.2 bouyer libdm_table_destroy(table); 531 1.2.2.2 bouyer } 532 1.2.2.2 bouyer 533 1.2.2.2 bouyer libdm_iter_destroy(iter); 534 1.2.2.2 bouyer libdm_cmd_destroy(cmd); 535 1.2.2.2 bouyer libdm_task_destroy(task); 536 1.2.2.2 bouyer 537 1.2.2.2 bouyer return 0; 538 1.2.2.2 bouyer } 539 1.2.2.2 bouyer 540 1.2.2.2 bouyer void 541 1.2.2.2 bouyer usage(void) 542 1.2.2.2 bouyer { 543 1.2.2.2 bouyer int i; 544 1.2.2.2 bouyer 545 1.2.2.2 bouyer (void)fprintf(stderr, "usage: %s command [dm device name]\n" 546 1.2.2.2 bouyer "Available commands are:\n ", getprogname()); 547 1.2.2.2 bouyer for (i = 0; commands[i].cmd_name != NULL; i++) 548 1.2.2.2 bouyer (void)fprintf(stderr, "\t%s\t%s\n", commands[i].cmd_name, commands[i].cmd_help); 549 1.2.2.2 bouyer exit(EXIT_FAILURE); 550 1.2.2.2 bouyer } 551 1.2.2.2 bouyer 552 1.2.2.2 bouyer static char * 553 1.2.2.2 bouyer parse_stdin(char *file_path) 554 1.2.2.2 bouyer { 555 1.2.2.2 bouyer char *buf, *lbuf; 556 1.2.2.2 bouyer size_t len; 557 1.2.2.2 bouyer FILE *fp; 558 1.2.2.2 bouyer 559 1.2.2.2 bouyer lbuf = NULL; 560 1.2.2.2 bouyer 561 1.2.2.2 bouyer if (file_path) { 562 1.2.2.2 bouyer if ((fp = fopen(file_path, "r")) == NULL) 563 1.2.2.2 bouyer err(ENOENT, "Cannot open table file\n"); 564 1.2.2.2 bouyer } else 565 1.2.2.2 bouyer fp = stdin; 566 1.2.2.2 bouyer 567 1.2.2.2 bouyer if ((buf = fgetln(fp, &len)) == NULL) 568 1.2.2.2 bouyer return NULL; 569 1.2.2.2 bouyer 570 1.2.2.2 bouyer if (buf[len - 1] != '\n') 571 1.2.2.2 bouyer len++; 572 1.2.2.2 bouyer 573 1.2.2.2 bouyer if ((lbuf = malloc(len)) == NULL) 574 1.2.2.2 bouyer err(EXIT_FAILURE, "malloc"); 575 1.2.2.2 bouyer 576 1.2.2.2 bouyer memcpy(lbuf, buf, len); 577 1.2.2.2 bouyer lbuf[len - 1] = '\0'; 578 1.2.2.2 bouyer 579 1.2.2.2 bouyer return lbuf; 580 1.2.2.2 bouyer } 581
Indexes created Thu Oct 23 22:10:10 GMT 2025