target.c revision 1.2.2.2
1 1.2.2.2 tls /* $NetBSD: target.c,v 1.2.2.2 2014/08/10 07:00:24 tls Exp $ */ 2 1.2.2.2 tls 3 1.2.2.2 tls /* 4 1.2.2.2 tls * Copyright 1997 Jonathan Stone 5 1.2.2.2 tls * All rights reserved. 6 1.2.2.2 tls * 7 1.2.2.2 tls * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 tls * modification, are permitted provided that the following conditions 9 1.2.2.2 tls * are met: 10 1.2.2.2 tls * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 tls * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 tls * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 tls * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 tls * documentation and/or other materials provided with the distribution. 15 1.2.2.2 tls * 3. All advertising materials mentioning features or use of this software 16 1.2.2.2 tls * must display the following acknowledgement: 17 1.2.2.2 tls * This product includes software developed for the NetBSD Project by 18 1.2.2.2 tls * Jonathan Stone. 19 1.2.2.2 tls * 4. The name of Jonathan Stone may not be used to endorse 20 1.2.2.2 tls * or promote products derived from this software without specific prior 21 1.2.2.2 tls * written permission. 22 1.2.2.2 tls * 23 1.2.2.2 tls * THIS SOFTWARE IS PROVIDED BY JONATHAN STONE ``AS IS'' 24 1.2.2.2 tls * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 1.2.2.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 1.2.2.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE 27 1.2.2.2 tls * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 1.2.2.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 1.2.2.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 1.2.2.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 1.2.2.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 1.2.2.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 33 1.2.2.2 tls * THE POSSIBILITY OF SUCH DAMAGE. 34 1.2.2.2 tls * 35 1.2.2.2 tls */ 36 1.2.2.2 tls 37 1.2.2.2 tls /* Copyright below applies to the realpath() code */ 38 1.2.2.2 tls 39 1.2.2.2 tls /* 40 1.2.2.2 tls * Copyright (c) 1989, 1991, 1993, 1995 41 1.2.2.2 tls * The Regents of the University of California. All rights reserved. 42 1.2.2.2 tls * 43 1.2.2.2 tls * This code is derived from software contributed to Berkeley by 44 1.2.2.2 tls * Jan-Simon Pendry. 45 1.2.2.2 tls * 46 1.2.2.2 tls * Redistribution and use in source and binary forms, with or without 47 1.2.2.2 tls * modification, are permitted provided that the following conditions 48 1.2.2.2 tls * are met: 49 1.2.2.2 tls * 1. Redistributions of source code must retain the above copyright 50 1.2.2.2 tls * notice, this list of conditions and the following disclaimer. 51 1.2.2.2 tls * 2. Redistributions in binary form must reproduce the above copyright 52 1.2.2.2 tls * notice, this list of conditions and the following disclaimer in the 53 1.2.2.2 tls * documentation and/or other materials provided with the distribution. 54 1.2.2.2 tls * 3. Neither the name of the University nor the names of its contributors 55 1.2.2.2 tls * may be used to endorse or promote products derived from this software 56 1.2.2.2 tls * without specific prior written permission. 57 1.2.2.2 tls * 58 1.2.2.2 tls * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 1.2.2.2 tls * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 1.2.2.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 1.2.2.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 1.2.2.2 tls * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 1.2.2.2 tls * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 1.2.2.2 tls * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 1.2.2.2 tls * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 1.2.2.2 tls * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 1.2.2.2 tls * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 1.2.2.2 tls * SUCH DAMAGE. 69 1.2.2.2 tls */ 70 1.2.2.2 tls 71 1.2.2.2 tls 72 1.2.2.2 tls #include <sys/cdefs.h> 73 1.2.2.2 tls #if defined(LIBC_SCCS) && !defined(lint) 74 1.2.2.2 tls __RCSID("$NetBSD: target.c,v 1.2.2.2 2014/08/10 07:00:24 tls Exp $"); 75 1.2.2.2 tls #endif 76 1.2.2.2 tls 77 1.2.2.2 tls /* 78 1.2.2.2 tls * target.c -- path-prefixing routines to access the target installation 79 1.2.2.2 tls * filesystems. Makes the install tools more independent of whether 80 1.2.2.2 tls * we're installing into a separate filesystem hierarchy mounted under 81 1.2.2.2 tls * /targetroot, or into the currently active root mounted on /. 82 1.2.2.2 tls */ 83 1.2.2.2 tls 84 1.2.2.2 tls #include <sys/param.h> /* XXX vm_param.h always defines TRUE*/ 85 1.2.2.2 tls #include <sys/types.h> 86 1.2.2.2 tls #include <sys/sysctl.h> 87 1.2.2.2 tls #include <sys/stat.h> /* stat() */ 88 1.2.2.2 tls #include <sys/mount.h> /* statfs() */ 89 1.2.2.2 tls 90 1.2.2.2 tls #include <fcntl.h> 91 1.2.2.2 tls #include <stdio.h> 92 1.2.2.2 tls #include <stdarg.h> 93 1.2.2.2 tls #include <unistd.h> 94 1.2.2.2 tls #include <curses.h> /* defines TRUE, but checks */ 95 1.2.2.2 tls #include <errno.h> 96 1.2.2.2 tls 97 1.2.2.2 tls 98 1.2.2.2 tls #include "defs.h" 99 1.2.2.2 tls #include "md.h" 100 1.2.2.2 tls #include "msg_defs.h" 101 1.2.2.2 tls #include "menu_defs.h" 102 1.2.2.2 tls 103 1.2.2.2 tls /* 104 1.2.2.2 tls * local prototypes 105 1.2.2.2 tls */ 106 1.2.2.2 tls 107 1.2.2.2 tls static void make_prefixed_dir (const char *prefix, const char *path); 108 1.2.2.2 tls static int do_target_chdir (const char *dir, int flag); 109 1.2.2.2 tls int target_test(unsigned int mode, const char *path); 110 1.2.2.2 tls int target_test_dir (const char *path); /* deprecated */ 111 1.2.2.2 tls int target_test_file (const char *path); /* deprecated */ 112 1.2.2.2 tls int target_test_symlink (const char *path); /* deprecated */ 113 1.2.2.2 tls 114 1.2.2.2 tls void unwind_mounts(void); 115 1.2.2.2 tls 116 1.2.2.2 tls /* Record a mount for later unwinding of target mounts. */ 117 1.2.2.2 tls struct unwind_mount { 118 1.2.2.2 tls struct unwind_mount *um_prev; 119 1.2.2.2 tls char um_mountpoint[4]; /* Allocated longer... */ 120 1.2.2.2 tls }; 121 1.2.2.2 tls 122 1.2.2.2 tls /* Unwind-mount stack */ 123 1.2.2.2 tls struct unwind_mount *unwind_mountlist = NULL; 124 1.2.2.2 tls 125 1.2.2.2 tls /* 126 1.2.2.2 tls * Debugging options 127 1.2.2.2 tls */ 128 1.2.2.2 tls /*#define DEBUG_ROOT*/ /* turn on what-is-root? debugging. */ 129 1.2.2.2 tls /*#define DEBUG_UNWIND*/ /* turn on unwind-target-mount debugging. */ 130 1.2.2.2 tls 131 1.2.2.2 tls /* 132 1.2.2.2 tls * debugging helper. curses... 133 1.2.2.2 tls */ 134 1.2.2.2 tls #if defined(DEBUG) || defined(DEBUG_ROOT) 135 1.2.2.2 tls void 136 1.2.2.2 tls backtowin(void) 137 1.2.2.2 tls { 138 1.2.2.2 tls 139 1.2.2.2 tls fflush(stdout); /* curses does not leave stdout linebuffered. */ 140 1.2.2.2 tls getchar(); /* wait for user to press return */ 141 1.2.2.2 tls wrefresh(stdscr); 142 1.2.2.2 tls } 143 1.2.2.2 tls #endif 144 1.2.2.2 tls 145 1.2.2.2 tls 146 1.2.2.2 tls /* 147 1.2.2.2 tls * Is the root partition we're running from the same as the root 148 1.2.2.2 tls * which the user has selected to install/upgrade? 149 1.2.2.2 tls * Uses global variable "pm->diskdev" to find the selected device for 150 1.2.2.2 tls * install/upgrade. 151 1.2.2.2 tls */ 152 1.2.2.2 tls int 153 1.2.2.2 tls target_already_root(void) 154 1.2.2.2 tls { 155 1.2.2.2 tls 156 1.2.2.2 tls if (strcmp(pm->diskdev, "") == 0) 157 1.2.2.2 tls /* No root partition was ever selected. 158 1.2.2.2 tls * Assume that the currently mounted one should be used 159 1.2.2.2 tls */ 160 1.2.2.2 tls return 1; 161 1.2.2.2 tls 162 1.2.2.2 tls return is_active_rootpart(pm->diskdev, pm->rootpart); 163 1.2.2.2 tls } 164 1.2.2.2 tls 165 1.2.2.2 tls 166 1.2.2.2 tls /* 167 1.2.2.2 tls * Is this device partition (e.g., "sd0a") mounted as root? 168 1.2.2.2 tls */ 169 1.2.2.2 tls int 170 1.2.2.2 tls is_active_rootpart(const char *dev, int ptn) 171 1.2.2.2 tls { 172 1.2.2.2 tls int mib[2]; 173 1.2.2.2 tls char rootdev[SSTRSIZE]; 174 1.2.2.2 tls int rootptn; 175 1.2.2.2 tls size_t varlen; 176 1.2.2.2 tls 177 1.2.2.2 tls mib[0] = CTL_KERN; 178 1.2.2.2 tls mib[1] = KERN_ROOT_DEVICE; 179 1.2.2.2 tls varlen = sizeof(rootdev); 180 1.2.2.2 tls if (sysctl(mib, 2, rootdev, &varlen, NULL, 0) < 0) 181 1.2.2.2 tls return 1; 182 1.2.2.2 tls 183 1.2.2.2 tls if (strcmp(dev, rootdev) != 0) 184 1.2.2.2 tls return 0; 185 1.2.2.2 tls 186 1.2.2.2 tls mib[1] = KERN_ROOT_PARTITION; 187 1.2.2.2 tls varlen = sizeof rootptn; 188 1.2.2.2 tls if (sysctl(mib, 2, &rootptn, &varlen, NULL, 0) < 0) 189 1.2.2.2 tls return 1; 190 1.2.2.2 tls 191 1.2.2.2 tls return ptn == rootptn; 192 1.2.2.2 tls } 193 1.2.2.2 tls 194 1.2.2.2 tls /* 195 1.2.2.2 tls * Pathname prefixing glue to support installation either 196 1.2.2.2 tls * from in-ramdisk miniroots or on-disk diskimages. 197 1.2.2.2 tls * If our root is on the target disk, the install target is mounted 198 1.2.2.2 tls * on /targetroot and we need to prefix installed pathnames with /targetroot. 199 1.2.2.2 tls * otherwise we are installing to the currently-active root and 200 1.2.2.2 tls * no prefix is needed. 201 1.2.2.2 tls */ 202 1.2.2.2 tls const char * 203 1.2.2.2 tls target_prefix(void) 204 1.2.2.2 tls { 205 1.2.2.2 tls /* 206 1.2.2.2 tls * XXX fetch sysctl variable for current root, and compare 207 1.2.2.2 tls * to the devicename of the install target disk. 208 1.2.2.2 tls */ 209 1.2.2.2 tls return(target_already_root() ? "" : targetroot_mnt); 210 1.2.2.2 tls } 211 1.2.2.2 tls 212 1.2.2.2 tls /* 213 1.2.2.2 tls * concatenate two pathnames. 214 1.2.2.2 tls * XXX returns either input args or result in a static buffer. 215 1.2.2.2 tls * The caller must copy if it wants to use the pathname past the 216 1.2.2.2 tls * next call to a target-prefixing function, or to modify the inputs.. 217 1.2.2.2 tls * Used only internally so this is probably safe. 218 1.2.2.2 tls */ 219 1.2.2.2 tls const char * 220 1.2.2.2 tls concat_paths(const char *prefix, const char *suffix) 221 1.2.2.2 tls { 222 1.2.2.2 tls static char real_path[MAXPATHLEN]; 223 1.2.2.2 tls 224 1.2.2.2 tls /* absolute prefix and null suffix? */ 225 1.2.2.2 tls if (prefix[0] == '/' && suffix[0] == 0) 226 1.2.2.2 tls return prefix; 227 1.2.2.2 tls 228 1.2.2.2 tls /* null prefix and absolute suffix? */ 229 1.2.2.2 tls if (prefix[0] == 0 && suffix[0] == '/') 230 1.2.2.2 tls return suffix; 231 1.2.2.2 tls 232 1.2.2.2 tls /* avoid "//" */ 233 1.2.2.2 tls if (suffix[0] == '/' || suffix[0] == 0) 234 1.2.2.2 tls snprintf(real_path, sizeof(real_path), "%s%s", prefix, suffix); 235 1.2.2.2 tls else 236 1.2.2.2 tls snprintf(real_path, sizeof(real_path), "%s/%s", 237 1.2.2.2 tls prefix, suffix); 238 1.2.2.2 tls return (real_path); 239 1.2.2.2 tls } 240 1.2.2.2 tls 241 1.2.2.2 tls /* 242 1.2.2.2 tls * Do target prefix expansion on a pathname. 243 1.2.2.2 tls * XXX uses concat_paths and so returns result in a static buffer. 244 1.2.2.2 tls * The caller must copy if it wants to use the pathname past the 245 1.2.2.2 tls * next call to a target-prefixing function, or to modify the inputs.. 246 1.2.2.2 tls * Used only internally so this is probably safe. 247 1.2.2.2 tls * 248 1.2.2.2 tls * Not static so other functions can generate target related file names. 249 1.2.2.2 tls */ 250 1.2.2.2 tls const char * 251 1.2.2.2 tls target_expand(const char *tgtpath) 252 1.2.2.2 tls { 253 1.2.2.2 tls 254 1.2.2.2 tls return concat_paths(target_prefix(), tgtpath); 255 1.2.2.2 tls } 256 1.2.2.2 tls 257 1.2.2.2 tls /* Make a directory, with a prefix like "/targetroot" or possibly just "". */ 258 1.2.2.2 tls static void 259 1.2.2.2 tls make_prefixed_dir(const char *prefix, const char *path) 260 1.2.2.2 tls { 261 1.2.2.2 tls 262 1.2.2.2 tls run_program(0, "/bin/mkdir -p %s", concat_paths(prefix, path)); 263 1.2.2.2 tls } 264 1.2.2.2 tls 265 1.2.2.2 tls /* Make a directory with a pathname relative to the installation target. */ 266 1.2.2.2 tls void 267 1.2.2.2 tls make_target_dir(const char *path) 268 1.2.2.2 tls { 269 1.2.2.2 tls 270 1.2.2.2 tls make_prefixed_dir(target_prefix(), path); 271 1.2.2.2 tls } 272 1.2.2.2 tls 273 1.2.2.2 tls 274 1.2.2.2 tls static int 275 1.2.2.2 tls do_target_chdir(const char *dir, int must_succeed) 276 1.2.2.2 tls { 277 1.2.2.2 tls const char *tgt_dir; 278 1.2.2.2 tls int error; 279 1.2.2.2 tls 280 1.2.2.2 tls error = 0; 281 1.2.2.2 tls tgt_dir = target_expand(dir); 282 1.2.2.2 tls 283 1.2.2.2 tls #ifdef DEBUG 284 1.2.2.2 tls printf("target_chdir (%s)\n", tgt_dir); 285 1.2.2.2 tls //return (0); 286 1.2.2.2 tls #endif 287 1.2.2.2 tls /* chdir returns -1 on error and sets errno. */ 288 1.2.2.2 tls if (chdir(tgt_dir) < 0) 289 1.2.2.2 tls error = errno; 290 1.2.2.2 tls if (logfp) { 291 1.2.2.2 tls fprintf(logfp, "cd to %s\n", tgt_dir); 292 1.2.2.2 tls fflush(logfp); 293 1.2.2.2 tls } 294 1.2.2.2 tls if (script) { 295 1.2.2.2 tls scripting_fprintf(NULL, "cd %s\n", tgt_dir); 296 1.2.2.2 tls fflush(script); 297 1.2.2.2 tls } 298 1.2.2.2 tls 299 1.2.2.2 tls if (error && must_succeed) { 300 1.2.2.2 tls fprintf(stderr, msg_string(MSG_realdir), 301 1.2.2.2 tls target_prefix(), strerror(error)); 302 1.2.2.2 tls if (logfp) 303 1.2.2.2 tls fprintf(logfp, msg_string(MSG_realdir), 304 1.2.2.2 tls target_prefix(), strerror(error)); 305 1.2.2.2 tls exit(1); 306 1.2.2.2 tls } 307 1.2.2.2 tls errno = error; 308 1.2.2.2 tls return (error); 309 1.2.2.2 tls } 310 1.2.2.2 tls 311 1.2.2.2 tls void 312 1.2.2.2 tls target_chdir_or_die(const char *dir) 313 1.2.2.2 tls { 314 1.2.2.2 tls 315 1.2.2.2 tls (void)do_target_chdir(dir, 1); 316 1.2.2.2 tls } 317 1.2.2.2 tls 318 1.2.2.2 tls #ifdef notdef 319 1.2.2.2 tls int 320 1.2.2.2 tls target_chdir(const char *dir) 321 1.2.2.2 tls { 322 1.2.2.2 tls 323 1.2.2.2 tls return do_target_chdir(dir, 0); 324 1.2.2.2 tls } 325 1.2.2.2 tls #endif 326 1.2.2.2 tls 327 1.2.2.2 tls /* 328 1.2.2.2 tls * Copy a file from the current root into the target system, 329 1.2.2.2 tls * where the destination pathname is relative to the target root. 330 1.2.2.2 tls * Does not check for copy-to-self when target is current root. 331 1.2.2.2 tls */ 332 1.2.2.2 tls int 333 1.2.2.2 tls cp_to_target(const char *srcpath, const char *tgt_path) 334 1.2.2.2 tls { 335 1.2.2.2 tls const char *real_path = target_expand(tgt_path); 336 1.2.2.2 tls 337 1.2.2.2 tls return run_program(0, "/bin/cp %s %s", srcpath, real_path); 338 1.2.2.2 tls } 339 1.2.2.2 tls 340 1.2.2.2 tls /* 341 1.2.2.2 tls * Duplicate a file from the current root to the same pathname 342 1.2.2.2 tls * in the target system. Pathname must be an absolute pathname. 343 1.2.2.2 tls * If we're running in the target, do nothing. 344 1.2.2.2 tls */ 345 1.2.2.2 tls void 346 1.2.2.2 tls dup_file_into_target(const char *filename) 347 1.2.2.2 tls { 348 1.2.2.2 tls 349 1.2.2.2 tls if (!target_already_root()) 350 1.2.2.2 tls cp_to_target(filename, filename); 351 1.2.2.2 tls } 352 1.2.2.2 tls 353 1.2.2.2 tls 354 1.2.2.2 tls /* 355 1.2.2.2 tls * Do a mv where both pathnames are within the target filesystem. 356 1.2.2.2 tls */ 357 1.2.2.2 tls void 358 1.2.2.2 tls mv_within_target_or_die(const char *frompath, const char *topath) 359 1.2.2.2 tls { 360 1.2.2.2 tls char realfrom[STRSIZE]; 361 1.2.2.2 tls char realto[STRSIZE]; 362 1.2.2.2 tls 363 1.2.2.2 tls strlcpy(realfrom, target_expand(frompath), sizeof realfrom); 364 1.2.2.2 tls strlcpy(realto, target_expand(topath), sizeof realto); 365 1.2.2.2 tls 366 1.2.2.2 tls run_program(RUN_FATAL, "mv %s %s", realfrom, realto); 367 1.2.2.2 tls } 368 1.2.2.2 tls 369 1.2.2.2 tls /* Do a cp where both pathnames are within the target filesystem. */ 370 1.2.2.2 tls int 371 1.2.2.2 tls cp_within_target(const char *frompath, const char *topath, int optional) 372 1.2.2.2 tls { 373 1.2.2.2 tls char realfrom[STRSIZE]; 374 1.2.2.2 tls char realto[STRSIZE]; 375 1.2.2.2 tls 376 1.2.2.2 tls strncpy(realfrom, target_expand(frompath), STRSIZE); 377 1.2.2.2 tls strncpy(realto, target_expand(topath), STRSIZE); 378 1.2.2.2 tls 379 1.2.2.2 tls if (access(realfrom, R_OK) == -1 && optional) 380 1.2.2.2 tls return 0; 381 1.2.2.2 tls return (run_program(0, "cp -p %s %s", realfrom, realto)); 382 1.2.2.2 tls } 383 1.2.2.2 tls 384 1.2.2.2 tls /* fopen a pathname in the target. */ 385 1.2.2.2 tls FILE * 386 1.2.2.2 tls target_fopen(const char *filename, const char *type) 387 1.2.2.2 tls { 388 1.2.2.2 tls 389 1.2.2.2 tls return fopen(target_expand(filename), type); 390 1.2.2.2 tls } 391 1.2.2.2 tls 392 1.2.2.2 tls /* 393 1.2.2.2 tls * Do a mount onto a mountpoint in the install target. 394 1.2.2.2 tls * Record mountpoint so we can unmount when finished. 395 1.2.2.2 tls * NB: does not prefix mount-from, which probably breaks nullfs mounts. 396 1.2.2.2 tls */ 397 1.2.2.2 tls int 398 1.2.2.2 tls target_mount_do(const char *opts, const char *from, const char *on) 399 1.2.2.2 tls { 400 1.2.2.2 tls struct unwind_mount *m; 401 1.2.2.2 tls int error; 402 1.2.2.2 tls int len; 403 1.2.2.2 tls 404 1.2.2.2 tls len = strlen(on); 405 1.2.2.2 tls m = malloc(sizeof *m + len); 406 1.2.2.2 tls if (m == 0) 407 1.2.2.2 tls return (ENOMEM); /* XXX */ 408 1.2.2.2 tls 409 1.2.2.2 tls memcpy(m->um_mountpoint, on, len + 1); 410 1.2.2.2 tls 411 1.2.2.2 tls #ifdef DEBUG_UNWIND 412 1.2.2.2 tls endwin(); 413 1.2.2.2 tls fprintf(stderr, "mounting %s with unwind\n", on); 414 1.2.2.2 tls backtowin(); 415 1.2.2.2 tls #endif 416 1.2.2.2 tls 417 1.2.2.2 tls error = run_program(0, "/sbin/mount %s %s %s%s", 418 1.2.2.2 tls opts, from, target_prefix(), on); 419 1.2.2.2 tls if (error) { 420 1.2.2.2 tls free(m); 421 1.2.2.2 tls return error; 422 1.2.2.2 tls } 423 1.2.2.2 tls m->um_prev = unwind_mountlist; 424 1.2.2.2 tls unwind_mountlist = m; 425 1.2.2.2 tls return 0; 426 1.2.2.2 tls } 427 1.2.2.2 tls 428 1.2.2.2 tls int 429 1.2.2.2 tls target_mount(const char *opts, const char *from, int ptn, const char *on) 430 1.2.2.2 tls { 431 1.2.2.2 tls int error; 432 1.2.2.2 tls char *frompath; 433 1.2.2.2 tls asprintf (&frompath, "/dev/%s%c", from, (ptn < 0)? 0 : 'a' + ptn); 434 1.2.2.2 tls if (frompath == 0) 435 1.2.2.2 tls return (ENOMEM); 436 1.2.2.2 tls error = target_mount_do(opts, frompath, on); 437 1.2.2.2 tls free(frompath); 438 1.2.2.2 tls return error; 439 1.2.2.2 tls } 440 1.2.2.2 tls 441 1.2.2.2 tls /* 442 1.2.2.2 tls * unwind the mount stack, unmounting mounted filesystems. 443 1.2.2.2 tls * For now, ignore any errors in unmount. 444 1.2.2.2 tls * (Why would we be unable to unmount? The user has suspended 445 1.2.2.2 tls * us and forked shell sitting somewhere in the target root?) 446 1.2.2.2 tls */ 447 1.2.2.2 tls void 448 1.2.2.2 tls unwind_mounts(void) 449 1.2.2.2 tls { 450 1.2.2.2 tls struct unwind_mount *m; 451 1.2.2.2 tls static volatile int unwind_in_progress = 0; 452 1.2.2.2 tls 453 1.2.2.2 tls /* signal safety */ 454 1.2.2.2 tls if (unwind_in_progress) 455 1.2.2.2 tls return; 456 1.2.2.2 tls unwind_in_progress = 1; 457 1.2.2.2 tls 458 1.2.2.2 tls while ((m = unwind_mountlist) != NULL) { 459 1.2.2.2 tls unwind_mountlist = m->um_prev; 460 1.2.2.2 tls #ifdef DEBUG_UNWIND 461 1.2.2.2 tls endwin(); 462 1.2.2.2 tls fprintf(stderr, "unmounting %s\n", m->um_mountpoint); 463 1.2.2.2 tls backtowin(); 464 1.2.2.2 tls #endif 465 1.2.2.2 tls run_program(0, "/sbin/umount %s%s", 466 1.2.2.2 tls target_prefix(), m->um_mountpoint); 467 1.2.2.2 tls free(m); 468 1.2.2.2 tls } 469 1.2.2.2 tls unwind_in_progress = 0; 470 1.2.2.2 tls } 471 1.2.2.2 tls 472 1.2.2.2 tls int 473 1.2.2.2 tls target_collect_file(int kind, char **buffer, const char *name) 474 1.2.2.2 tls { 475 1.2.2.2 tls const char *realname = target_expand(name); 476 1.2.2.2 tls 477 1.2.2.2 tls #ifdef DEBUG 478 1.2.2.2 tls printf("collect real name %s\n", realname); 479 1.2.2.2 tls #endif 480 1.2.2.2 tls return collect(kind, buffer, "%s", realname); 481 1.2.2.2 tls } 482 1.2.2.2 tls 483 1.2.2.2 tls /* 484 1.2.2.2 tls * Verify a pathname already exists in the target root filesystem, 485 1.2.2.2 tls * by running test "testflag" on the expanded target pathname. 486 1.2.2.2 tls */ 487 1.2.2.2 tls int 488 1.2.2.2 tls target_test(unsigned int mode, const char *path) 489 1.2.2.2 tls { 490 1.2.2.2 tls const char *real_path = target_expand(path); 491 1.2.2.2 tls register int result; 492 1.2.2.2 tls 493 1.2.2.2 tls result = !file_mode_match(real_path, mode); 494 1.2.2.2 tls scripting_fprintf(NULL, "if [ $? != 0 ]; then echo \"%s does not exist!\"; fi\n", real_path); 495 1.2.2.2 tls 496 1.2.2.2 tls #if defined(DEBUG) 497 1.2.2.2 tls printf("target_test(%o, %s) returning %d\n", mode, real_path, result); 498 1.2.2.2 tls #endif 499 1.2.2.2 tls return (result); 500 1.2.2.2 tls } 501 1.2.2.2 tls 502 1.2.2.2 tls /* 503 1.2.2.2 tls * Verify a directory already exists in the target root 504 1.2.2.2 tls * filesystem. Do not create the directory if it doesn't exist. 505 1.2.2.2 tls * Assumes that sysinst has already mounted the target root. 506 1.2.2.2 tls */ 507 1.2.2.2 tls int 508 1.2.2.2 tls target_test_dir(const char *path) 509 1.2.2.2 tls { 510 1.2.2.2 tls 511 1.2.2.2 tls return target_test(S_IFDIR, path); 512 1.2.2.2 tls } 513 1.2.2.2 tls 514 1.2.2.2 tls /* 515 1.2.2.2 tls * Verify an ordinary file already exists in the target root 516 1.2.2.2 tls * filesystem. Do not create the directory if it doesn't exist. 517 1.2.2.2 tls * Assumes that sysinst has already mounted the target root. 518 1.2.2.2 tls */ 519 1.2.2.2 tls int 520 1.2.2.2 tls target_test_file(const char *path) 521 1.2.2.2 tls { 522 1.2.2.2 tls 523 1.2.2.2 tls return target_test(S_IFREG, path); 524 1.2.2.2 tls } 525 1.2.2.2 tls 526 1.2.2.2 tls int 527 1.2.2.2 tls target_test_symlink(const char *path) 528 1.2.2.2 tls { 529 1.2.2.2 tls 530 1.2.2.2 tls return target_test(S_IFLNK, path); 531 1.2.2.2 tls } 532 1.2.2.2 tls 533 1.2.2.2 tls int 534 1.2.2.2 tls target_file_exists_p(const char *path) 535 1.2.2.2 tls { 536 1.2.2.2 tls 537 1.2.2.2 tls return (target_test_file(path) == 0); 538 1.2.2.2 tls } 539 1.2.2.2 tls 540 1.2.2.2 tls int 541 1.2.2.2 tls target_dir_exists_p(const char *path) 542 1.2.2.2 tls { 543 1.2.2.2 tls 544 1.2.2.2 tls return (target_test_dir(path) == 0); 545 1.2.2.2 tls } 546 1.2.2.2 tls 547 1.2.2.2 tls int 548 1.2.2.2 tls target_symlink_exists_p(const char *path) 549 1.2.2.2 tls { 550 1.2.2.2 tls 551 1.2.2.2 tls return (target_test_symlink(path) == 0); 552 1.2.2.2 tls } 553 1.2.2.2 tls 554 1.2.2.2 tls int 555 1.2.2.2 tls target_mounted(void) 556 1.2.2.2 tls { 557 1.2.2.2 tls return (unwind_mountlist != NULL); 558 1.2.2.2 tls } 559
Indexes created Fri Oct 03 02:09:57 GMT 2025