| File: | build-scan/../src/shared/machine-image.c |
| Warning: | line 806, column 13 Potential leak of memory pointed to by 'j' |
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| 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ | |||
| 2 | ||||
| 3 | #include <dirent.h> | |||
| 4 | #include <errno(*__errno_location ()).h> | |||
| 5 | #include <fcntl.h> | |||
| 6 | #include <stdio.h> | |||
| 7 | #include <stdlib.h> | |||
| 8 | #include <string.h> | |||
| 9 | #include <sys/file.h> | |||
| 10 | #include <sys/stat.h> | |||
| 11 | #include <unistd.h> | |||
| 12 | #include <linux1/fs.h> | |||
| 13 | ||||
| 14 | #include "alloc-util.h" | |||
| 15 | #include "btrfs-util.h" | |||
| 16 | #include "chattr-util.h" | |||
| 17 | #include "copy.h" | |||
| 18 | #include "dirent-util.h" | |||
| 19 | #include "dissect-image.h" | |||
| 20 | #include "env-util.h" | |||
| 21 | #include "fd-util.h" | |||
| 22 | #include "fileio.h" | |||
| 23 | #include "fs-util.h" | |||
| 24 | #include "hashmap.h" | |||
| 25 | #include "hostname-util.h" | |||
| 26 | #include "id128-util.h" | |||
| 27 | #include "lockfile-util.h" | |||
| 28 | #include "log.h" | |||
| 29 | #include "loop-util.h" | |||
| 30 | #include "machine-image.h" | |||
| 31 | #include "macro.h" | |||
| 32 | #include "mkdir.h" | |||
| 33 | #include "os-util.h" | |||
| 34 | #include "path-util.h" | |||
| 35 | #include "rm-rf.h" | |||
| 36 | #include "string-table.h" | |||
| 37 | #include "string-util.h" | |||
| 38 | #include "strv.h" | |||
| 39 | #include "time-util.h" | |||
| 40 | #include "utf8.h" | |||
| 41 | #include "util.h" | |||
| 42 | #include "xattr-util.h" | |||
| 43 | ||||
| 44 | static const char* const image_search_path[_IMAGE_CLASS_MAX] = { | |||
| 45 | [IMAGE_MACHINE] = "/etc/machines\0" /* only place symlinks here */ | |||
| 46 | "/run/machines\0" /* and here too */ | |||
| 47 | "/var/lib/machines\0" /* the main place for images */ | |||
| 48 | "/var/lib/container\0" /* legacy */ | |||
| 49 | "/usr/local/lib/machines\0" | |||
| 50 | "/usr/lib/machines\0", | |||
| 51 | ||||
| 52 | [IMAGE_PORTABLE] = "/etc/portables\0" /* only place symlinks here */ | |||
| 53 | "/run/portables\0" /* and here too */ | |||
| 54 | "/var/lib/portables\0" /* the main place for images */ | |||
| 55 | "/usr/local/lib/portables\0" | |||
| 56 | "/usr/lib/portables\0", | |||
| 57 | }; | |||
| 58 | ||||
| 59 | Image *image_unref(Image *i) { | |||
| 60 | if (!i) | |||
| 61 | return NULL((void*)0); | |||
| 62 | ||||
| 63 | assert(i->n_ref > 0)do { if ((__builtin_expect(!!(!(i->n_ref > 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("i->n_ref > 0"), "../src/shared/machine-image.c" , 63, __PRETTY_FUNCTION__); } while (0); | |||
| 64 | i->n_ref--; | |||
| 65 | ||||
| 66 | if (i->n_ref > 0) | |||
| 67 | return NULL((void*)0); | |||
| 68 | ||||
| 69 | free(i->name); | |||
| 70 | free(i->path); | |||
| 71 | ||||
| 72 | free(i->hostname); | |||
| 73 | strv_free(i->machine_info); | |||
| 74 | strv_free(i->os_release); | |||
| 75 | ||||
| 76 | return mfree(i); | |||
| 77 | } | |||
| 78 | ||||
| 79 | Image *image_ref(Image *i) { | |||
| 80 | if (!i) | |||
| 81 | return NULL((void*)0); | |||
| 82 | ||||
| 83 | assert(i->n_ref > 0)do { if ((__builtin_expect(!!(!(i->n_ref > 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("i->n_ref > 0"), "../src/shared/machine-image.c" , 83, __PRETTY_FUNCTION__); } while (0); | |||
| 84 | i->n_ref++; | |||
| 85 | ||||
| 86 | return i; | |||
| 87 | } | |||
| 88 | ||||
| 89 | static char **image_settings_path(Image *image) { | |||
| 90 | _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **l = NULL((void*)0); | |||
| 91 | const char *fn, *s; | |||
| 92 | unsigned i = 0; | |||
| 93 | ||||
| 94 | assert(image)do { if ((__builtin_expect(!!(!(image)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("image"), "../src/shared/machine-image.c" , 94, __PRETTY_FUNCTION__); } while (0); | |||
| 95 | ||||
| 96 | l = new0(char*, 4)((char**) calloc((4), sizeof(char*))); | |||
| 97 | if (!l) | |||
| 98 | return NULL((void*)0); | |||
| 99 | ||||
| 100 | fn = strjoina(image->name, ".nspawn")({ const char *_appendees_[] = { image->name, ".nspawn" }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); | |||
| 101 | ||||
| 102 | FOREACH_STRING(s, "/etc/systemd/nspawn/", "/run/systemd/nspawn/")for (char **_l = ({ char **_ll = ((char**) ((const char*[]) { "/etc/systemd/nspawn/", "/run/systemd/nspawn/", ((void*)0) } )); s = _ll ? _ll[0] : ((void*)0); _ll; }); _l && *_l ; s = ({ _l ++; _l[0]; })) { | |||
| 103 | l[i] = strappend(s, fn); | |||
| 104 | if (!l[i]) | |||
| 105 | return NULL((void*)0); | |||
| 106 | ||||
| 107 | i++; | |||
| 108 | } | |||
| 109 | ||||
| 110 | l[i] = file_in_same_dir(image->path, fn); | |||
| 111 | if (!l[i]) | |||
| 112 | return NULL((void*)0); | |||
| 113 | ||||
| 114 | return TAKE_PTR(l)({ typeof(l) _ptr_ = (l); (l) = ((void*)0); _ptr_; }); | |||
| 115 | } | |||
| 116 | ||||
| 117 | static char *image_roothash_path(Image *image) { | |||
| 118 | const char *fn; | |||
| 119 | ||||
| 120 | assert(image)do { if ((__builtin_expect(!!(!(image)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("image"), "../src/shared/machine-image.c" , 120, __PRETTY_FUNCTION__); } while (0); | |||
| 121 | ||||
| 122 | fn = strjoina(image->name, ".roothash")({ const char *_appendees_[] = { image->name, ".roothash" } ; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0 ; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); | |||
| 123 | ||||
| 124 | return file_in_same_dir(image->path, fn); | |||
| 125 | } | |||
| 126 | ||||
| 127 | static int image_new( | |||
| 128 | ImageType t, | |||
| 129 | const char *pretty, | |||
| 130 | const char *path, | |||
| 131 | const char *filename, | |||
| 132 | bool_Bool read_only, | |||
| 133 | usec_t crtime, | |||
| 134 | usec_t mtime, | |||
| 135 | Image **ret) { | |||
| 136 | ||||
| 137 | _cleanup_(image_unrefp)__attribute__((cleanup(image_unrefp))) Image *i = NULL((void*)0); | |||
| 138 | ||||
| 139 | assert(t >= 0)do { if ((__builtin_expect(!!(!(t >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("t >= 0"), "../src/shared/machine-image.c" , 139, __PRETTY_FUNCTION__); } while (0); | |||
| 140 | assert(t < _IMAGE_TYPE_MAX)do { if ((__builtin_expect(!!(!(t < _IMAGE_TYPE_MAX)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("t < _IMAGE_TYPE_MAX" ), "../src/shared/machine-image.c", 140, __PRETTY_FUNCTION__) ; } while (0); | |||
| 141 | assert(pretty)do { if ((__builtin_expect(!!(!(pretty)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("pretty"), "../src/shared/machine-image.c" , 141, __PRETTY_FUNCTION__); } while (0); | |||
| 142 | assert(filename)do { if ((__builtin_expect(!!(!(filename)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("filename"), "../src/shared/machine-image.c" , 142, __PRETTY_FUNCTION__); } while (0); | |||
| 143 | assert(ret)do { if ((__builtin_expect(!!(!(ret)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/shared/machine-image.c", 143, __PRETTY_FUNCTION__); } while (0); | |||
| 144 | ||||
| 145 | i = new0(Image, 1)((Image*) calloc((1), sizeof(Image))); | |||
| 146 | if (!i) | |||
| 147 | return -ENOMEM12; | |||
| 148 | ||||
| 149 | i->n_ref = 1; | |||
| 150 | i->type = t; | |||
| 151 | i->read_only = read_only; | |||
| 152 | i->crtime = crtime; | |||
| 153 | i->mtime = mtime; | |||
| 154 | i->usage = i->usage_exclusive = (uint64_t) -1; | |||
| 155 | i->limit = i->limit_exclusive = (uint64_t) -1; | |||
| 156 | ||||
| 157 | i->name = strdup(pretty); | |||
| 158 | if (!i->name) | |||
| 159 | return -ENOMEM12; | |||
| 160 | ||||
| 161 | if (path) | |||
| 162 | i->path = strjoin(path, "/", filename)strjoin_real((path), "/", filename, ((void*)0)); | |||
| 163 | else | |||
| 164 | i->path = strdup(filename); | |||
| 165 | if (!i->path) | |||
| 166 | return -ENOMEM12; | |||
| 167 | ||||
| 168 | path_simplify(i->path, false0); | |||
| 169 | ||||
| 170 | *ret = TAKE_PTR(i)({ typeof(i) _ptr_ = (i); (i) = ((void*)0); _ptr_; }); | |||
| 171 | ||||
| 172 | return 0; | |||
| 173 | } | |||
| 174 | ||||
| 175 | static int extract_pretty(const char *path, const char *suffix, char **ret) { | |||
| 176 | _cleanup_free___attribute__((cleanup(freep))) char *name = NULL((void*)0); | |||
| 177 | const char *p; | |||
| 178 | size_t n; | |||
| 179 | ||||
| 180 | assert(path)do { if ((__builtin_expect(!!(!(path)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("path"), "../src/shared/machine-image.c" , 180, __PRETTY_FUNCTION__); } while (0); | |||
| 181 | assert(ret)do { if ((__builtin_expect(!!(!(ret)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/shared/machine-image.c", 181, __PRETTY_FUNCTION__); } while (0); | |||
| 182 | ||||
| 183 | p = last_path_component(path); | |||
| 184 | n = strcspn(p, "/"); | |||
| 185 | ||||
| 186 | name = strndup(p, n); | |||
| 187 | if (!name) | |||
| 188 | return -ENOMEM12; | |||
| 189 | ||||
| 190 | if (suffix) { | |||
| 191 | char *e; | |||
| 192 | ||||
| 193 | e = endswith(name, suffix); | |||
| 194 | if (!e) | |||
| 195 | return -EINVAL22; | |||
| 196 | ||||
| 197 | *e = 0; | |||
| 198 | } | |||
| 199 | ||||
| 200 | if (!image_name_is_valid(name)) | |||
| 201 | return -EINVAL22; | |||
| 202 | ||||
| 203 | *ret = TAKE_PTR(name)({ typeof(name) _ptr_ = (name); (name) = ((void*)0); _ptr_; } ); | |||
| 204 | return 0; | |||
| 205 | } | |||
| 206 | ||||
| 207 | static int image_make( | |||
| 208 | const char *pretty, | |||
| 209 | int dfd, | |||
| 210 | const char *path, | |||
| 211 | const char *filename, | |||
| 212 | const struct stat *st, | |||
| 213 | Image **ret) { | |||
| 214 | ||||
| 215 | _cleanup_free___attribute__((cleanup(freep))) char *pretty_buffer = NULL((void*)0); | |||
| 216 | struct stat stbuf; | |||
| 217 | bool_Bool read_only; | |||
| 218 | int r; | |||
| 219 | ||||
| 220 | assert(dfd >= 0 || dfd == AT_FDCWD)do { if ((__builtin_expect(!!(!(dfd >= 0 || dfd == -100)), 0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("dfd >= 0 || dfd == AT_FDCWD" ), "../src/shared/machine-image.c", 220, __PRETTY_FUNCTION__) ; } while (0); | |||
| 221 | assert(filename)do { if ((__builtin_expect(!!(!(filename)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("filename"), "../src/shared/machine-image.c" , 221, __PRETTY_FUNCTION__); } while (0); | |||
| 222 | ||||
| 223 | /* We explicitly *do* follow symlinks here, since we want to allow symlinking trees, raw files and block | |||
| 224 | * devices into /var/lib/machines/, and treat them normally. | |||
| 225 | * | |||
| 226 | * This function returns -ENOENT if we can't find the image after all, and -EMEDIUMTYPE if it's not a file we | |||
| 227 | * recognize. */ | |||
| 228 | ||||
| 229 | if (!st) { | |||
| 230 | if (fstatat(dfd, filename, &stbuf, 0) < 0) | |||
| 231 | return -errno(*__errno_location ()); | |||
| 232 | ||||
| 233 | st = &stbuf; | |||
| 234 | } | |||
| 235 | ||||
| 236 | read_only = | |||
| 237 | (path && path_startswith(path, "/usr")) || | |||
| 238 | (faccessat(dfd, filename, W_OK2, AT_EACCESS0x200) < 0 && errno(*__errno_location ()) == EROFS30); | |||
| 239 | ||||
| 240 | if (S_ISDIR(st->st_mode)((((st->st_mode)) & 0170000) == (0040000))) { | |||
| 241 | _cleanup_close___attribute__((cleanup(closep))) int fd = -1; | |||
| 242 | unsigned file_attr = 0; | |||
| 243 | ||||
| 244 | if (!ret) | |||
| 245 | return 0; | |||
| 246 | ||||
| 247 | if (!pretty) { | |||
| 248 | r = extract_pretty(filename, NULL((void*)0), &pretty_buffer); | |||
| 249 | if (r < 0) | |||
| 250 | return r; | |||
| 251 | ||||
| 252 | pretty = pretty_buffer; | |||
| 253 | } | |||
| 254 | ||||
| 255 | fd = openat(dfd, filename, O_CLOEXEC02000000|O_NOCTTY0400|O_DIRECTORY0200000); | |||
| 256 | if (fd < 0) | |||
| 257 | return -errno(*__errno_location ()); | |||
| 258 | ||||
| 259 | /* btrfs subvolumes have inode 256 */ | |||
| 260 | if (st->st_ino == 256) { | |||
| 261 | ||||
| 262 | r = btrfs_is_filesystem(fd); | |||
| 263 | if (r < 0) | |||
| 264 | return r; | |||
| 265 | if (r) { | |||
| 266 | BtrfsSubvolInfo info; | |||
| 267 | ||||
| 268 | /* It's a btrfs subvolume */ | |||
| 269 | ||||
| 270 | r = btrfs_subvol_get_info_fd(fd, 0, &info); | |||
| 271 | if (r < 0) | |||
| 272 | return r; | |||
| 273 | ||||
| 274 | r = image_new(IMAGE_SUBVOLUME, | |||
| 275 | pretty, | |||
| 276 | path, | |||
| 277 | filename, | |||
| 278 | info.read_only || read_only, | |||
| 279 | info.otime, | |||
| 280 | 0, | |||
| 281 | ret); | |||
| 282 | if (r < 0) | |||
| 283 | return r; | |||
| 284 | ||||
| 285 | if (btrfs_quota_scan_ongoing(fd) == 0) { | |||
| 286 | BtrfsQuotaInfo quota; | |||
| 287 | ||||
| 288 | r = btrfs_subvol_get_subtree_quota_fd(fd, 0, "a); | |||
| 289 | if (r >= 0) { | |||
| 290 | (*ret)->usage = quota.referenced; | |||
| 291 | (*ret)->usage_exclusive = quota.exclusive; | |||
| 292 | ||||
| 293 | (*ret)->limit = quota.referenced_max; | |||
| 294 | (*ret)->limit_exclusive = quota.exclusive_max; | |||
| 295 | } | |||
| 296 | } | |||
| 297 | ||||
| 298 | return 0; | |||
| 299 | } | |||
| 300 | } | |||
| 301 | ||||
| 302 | /* If the IMMUTABLE bit is set, we consider the | |||
| 303 | * directory read-only. Since the ioctl is not | |||
| 304 | * supported everywhere we ignore failures. */ | |||
| 305 | (void) read_attr_fd(fd, &file_attr); | |||
| 306 | ||||
| 307 | /* It's just a normal directory. */ | |||
| 308 | r = image_new(IMAGE_DIRECTORY, | |||
| 309 | pretty, | |||
| 310 | path, | |||
| 311 | filename, | |||
| 312 | read_only || (file_attr & FS_IMMUTABLE_FL0x00000010), | |||
| 313 | 0, | |||
| 314 | 0, | |||
| 315 | ret); | |||
| 316 | if (r < 0) | |||
| 317 | return r; | |||
| 318 | ||||
| 319 | return 0; | |||
| 320 | ||||
| 321 | } else if (S_ISREG(st->st_mode)((((st->st_mode)) & 0170000) == (0100000)) && endswith(filename, ".raw")) { | |||
| 322 | usec_t crtime = 0; | |||
| 323 | ||||
| 324 | /* It's a RAW disk image */ | |||
| 325 | ||||
| 326 | if (!ret) | |||
| 327 | return 0; | |||
| 328 | ||||
| 329 | (void) fd_getcrtime_at(dfd, filename, &crtime, 0); | |||
| 330 | ||||
| 331 | if (!pretty) { | |||
| 332 | r = extract_pretty(filename, ".raw", &pretty_buffer); | |||
| 333 | if (r < 0) | |||
| 334 | return r; | |||
| 335 | ||||
| 336 | pretty = pretty_buffer; | |||
| 337 | } | |||
| 338 | ||||
| 339 | r = image_new(IMAGE_RAW, | |||
| 340 | pretty, | |||
| 341 | path, | |||
| 342 | filename, | |||
| 343 | !(st->st_mode & 0222) || read_only, | |||
| 344 | crtime, | |||
| 345 | timespec_load(&st->st_mtim), | |||
| 346 | ret); | |||
| 347 | if (r < 0) | |||
| 348 | return r; | |||
| 349 | ||||
| 350 | (*ret)->usage = (*ret)->usage_exclusive = st->st_blocks * 512; | |||
| 351 | (*ret)->limit = (*ret)->limit_exclusive = st->st_size; | |||
| 352 | ||||
| 353 | return 0; | |||
| 354 | ||||
| 355 | } else if (S_ISBLK(st->st_mode)((((st->st_mode)) & 0170000) == (0060000))) { | |||
| 356 | _cleanup_close___attribute__((cleanup(closep))) int block_fd = -1; | |||
| 357 | uint64_t size = UINT64_MAX(18446744073709551615UL); | |||
| 358 | ||||
| 359 | /* A block device */ | |||
| 360 | ||||
| 361 | if (!ret) | |||
| 362 | return 0; | |||
| 363 | ||||
| 364 | if (!pretty) { | |||
| 365 | r = extract_pretty(filename, NULL((void*)0), &pretty_buffer); | |||
| 366 | if (r < 0) | |||
| 367 | return r; | |||
| 368 | ||||
| 369 | pretty = pretty_buffer; | |||
| 370 | } | |||
| 371 | ||||
| 372 | block_fd = openat(dfd, filename, O_RDONLY00|O_NONBLOCK04000|O_CLOEXEC02000000|O_NOCTTY0400); | |||
| 373 | if (block_fd < 0) | |||
| 374 | log_debug_errno(errno, "Failed to open block device %s/%s, ignoring: %m", path, filename)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/shared/machine-image.c", 374, __func__ , "Failed to open block device %s/%s, ignoring: %m", path, filename ) : -abs(_e); }); | |||
| 375 | else { | |||
| 376 | /* Refresh stat data after opening the node */ | |||
| 377 | if (fstat(block_fd, &stbuf) < 0) | |||
| 378 | return -errno(*__errno_location ()); | |||
| 379 | st = &stbuf; | |||
| 380 | ||||
| 381 | if (!S_ISBLK(st->st_mode)((((st->st_mode)) & 0170000) == (0060000))) /* Verify that what we opened is actually what we think it is */ | |||
| 382 | return -ENOTTY25; | |||
| 383 | ||||
| 384 | if (!read_only) { | |||
| 385 | int state = 0; | |||
| 386 | ||||
| 387 | if (ioctl(block_fd, BLKROGET(((0U) << (((0 +8)+8)+14)) | (((0x12)) << (0 +8)) | (((94)) << 0) | ((0) << ((0 +8)+8))), &state) < 0) | |||
| 388 | log_debug_errno(errno, "Failed to issue BLKROGET on device %s/%s, ignoring: %m", path, filename)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/shared/machine-image.c", 388, __func__ , "Failed to issue BLKROGET on device %s/%s, ignoring: %m", path , filename) : -abs(_e); }); | |||
| 389 | else if (state) | |||
| 390 | read_only = true1; | |||
| 391 | } | |||
| 392 | ||||
| 393 | if (ioctl(block_fd, BLKGETSIZE64(((2U) << (((0 +8)+8)+14)) | (((0x12)) << (0 +8)) | (((114)) << 0) | ((((sizeof(size_t)))) << ((0 + 8)+8))), &size) < 0) | |||
| 394 | log_debug_errno(errno, "Failed to issue BLKGETSIZE64 on device %s/%s, ignoring: %m", path, filename)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/shared/machine-image.c", 394, __func__ , "Failed to issue BLKGETSIZE64 on device %s/%s, ignoring: %m" , path, filename) : -abs(_e); }); | |||
| 395 | ||||
| 396 | block_fd = safe_close(block_fd); | |||
| 397 | } | |||
| 398 | ||||
| 399 | r = image_new(IMAGE_BLOCK, | |||
| 400 | pretty, | |||
| 401 | path, | |||
| 402 | filename, | |||
| 403 | !(st->st_mode & 0222) || read_only, | |||
| 404 | 0, | |||
| 405 | 0, | |||
| 406 | ret); | |||
| 407 | if (r < 0) | |||
| 408 | return r; | |||
| 409 | ||||
| 410 | if (size != 0 && size != UINT64_MAX(18446744073709551615UL)) | |||
| 411 | (*ret)->usage = (*ret)->usage_exclusive = (*ret)->limit = (*ret)->limit_exclusive = size; | |||
| 412 | ||||
| 413 | return 0; | |||
| 414 | } | |||
| 415 | ||||
| 416 | return -EMEDIUMTYPE124; | |||
| 417 | } | |||
| 418 | ||||
| 419 | int image_find(ImageClass class, const char *name, Image **ret) { | |||
| 420 | const char *path; | |||
| 421 | int r; | |||
| 422 | ||||
| 423 | assert(class >= 0)do { if ((__builtin_expect(!!(!(class >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("class >= 0"), "../src/shared/machine-image.c" , 423, __PRETTY_FUNCTION__); } while (0); | |||
| 424 | assert(class < _IMAGE_CLASS_MAX)do { if ((__builtin_expect(!!(!(class < _IMAGE_CLASS_MAX)) ,0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("class < _IMAGE_CLASS_MAX" ), "../src/shared/machine-image.c", 424, __PRETTY_FUNCTION__) ; } while (0); | |||
| 425 | assert(name)do { if ((__builtin_expect(!!(!(name)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("name"), "../src/shared/machine-image.c" , 425, __PRETTY_FUNCTION__); } while (0); | |||
| 426 | ||||
| 427 | /* There are no images with invalid names */ | |||
| 428 | if (!image_name_is_valid(name)) | |||
| 429 | return -ENOENT2; | |||
| 430 | ||||
| 431 | NULSTR_FOREACH(path, image_search_path[class])for ((path) = (image_search_path[class]); (path) && * (path); (path) = strchr((path), 0)+1) { | |||
| 432 | _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *d = NULL((void*)0); | |||
| 433 | struct stat st; | |||
| 434 | ||||
| 435 | d = opendir(path); | |||
| 436 | if (!d) { | |||
| 437 | if (errno(*__errno_location ()) == ENOENT2) | |||
| 438 | continue; | |||
| 439 | ||||
| 440 | return -errno(*__errno_location ()); | |||
| 441 | } | |||
| 442 | ||||
| 443 | /* As mentioned above, we follow symlinks on this fstatat(), because we want to permit people to | |||
| 444 | * symlink block devices into the search path */ | |||
| 445 | if (fstatat(dirfd(d), name, &st, 0) < 0) { | |||
| 446 | _cleanup_free___attribute__((cleanup(freep))) char *raw = NULL((void*)0); | |||
| 447 | ||||
| 448 | if (errno(*__errno_location ()) != ENOENT2) | |||
| 449 | return -errno(*__errno_location ()); | |||
| 450 | ||||
| 451 | raw = strappend(name, ".raw"); | |||
| 452 | if (!raw) | |||
| 453 | return -ENOMEM12; | |||
| 454 | ||||
| 455 | if (fstatat(dirfd(d), raw, &st, 0) < 0) { | |||
| 456 | ||||
| 457 | if (errno(*__errno_location ()) == ENOENT2) | |||
| 458 | continue; | |||
| 459 | ||||
| 460 | return -errno(*__errno_location ()); | |||
| 461 | } | |||
| 462 | ||||
| 463 | if (!S_ISREG(st.st_mode)((((st.st_mode)) & 0170000) == (0100000))) | |||
| 464 | continue; | |||
| 465 | ||||
| 466 | r = image_make(name, dirfd(d), path, raw, &st, ret); | |||
| 467 | ||||
| 468 | } else { | |||
| 469 | if (!S_ISDIR(st.st_mode)((((st.st_mode)) & 0170000) == (0040000)) && !S_ISBLK(st.st_mode)((((st.st_mode)) & 0170000) == (0060000))) | |||
| 470 | continue; | |||
| 471 | ||||
| 472 | r = image_make(name, dirfd(d), path, name, &st, ret); | |||
| 473 | } | |||
| 474 | if (IN_SET(r, -ENOENT, -EMEDIUMTYPE)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended [20 - sizeof((int[]){-2, -124})/sizeof(int)]; switch(r) { case -2: case -124: _found = 1; break; default: break; } _found; } )) | |||
| 475 | continue; | |||
| 476 | if (r < 0) | |||
| 477 | return r; | |||
| 478 | ||||
| 479 | if (ret) | |||
| 480 | (*ret)->discoverable = true1; | |||
| 481 | ||||
| 482 | return 1; | |||
| 483 | } | |||
| 484 | ||||
| 485 | if (class == IMAGE_MACHINE && streq(name, ".host")(strcmp((name),(".host")) == 0)) { | |||
| 486 | r = image_make(".host", AT_FDCWD-100, NULL((void*)0), "/", NULL((void*)0), ret); | |||
| 487 | if (r < 0) | |||
| 488 | return r; | |||
| 489 | ||||
| 490 | if (ret) | |||
| 491 | (*ret)->discoverable = true1; | |||
| 492 | ||||
| 493 | return r; | |||
| 494 | } | |||
| 495 | ||||
| 496 | return -ENOENT2; | |||
| 497 | }; | |||
| 498 | ||||
| 499 | int image_from_path(const char *path, Image **ret) { | |||
| 500 | ||||
| 501 | /* Note that we don't set the 'discoverable' field of the returned object, because we don't check here whether | |||
| 502 | * the image is in the image search path. And if it is we don't know if the path we used is actually not | |||
| 503 | * overridden by another, different image earlier in the search path */ | |||
| 504 | ||||
| 505 | if (path_equal(path, "/")) | |||
| 506 | return image_make(".host", AT_FDCWD-100, NULL((void*)0), "/", NULL((void*)0), ret); | |||
| 507 | ||||
| 508 | return image_make(NULL((void*)0), AT_FDCWD-100, NULL((void*)0), path, NULL((void*)0), ret); | |||
| 509 | } | |||
| 510 | ||||
| 511 | int image_find_harder(ImageClass class, const char *name_or_path, Image **ret) { | |||
| 512 | if (image_name_is_valid(name_or_path)) | |||
| 513 | return image_find(class, name_or_path, ret); | |||
| 514 | ||||
| 515 | return image_from_path(name_or_path, ret); | |||
| 516 | } | |||
| 517 | ||||
| 518 | int image_discover(ImageClass class, Hashmap *h) { | |||
| 519 | const char *path; | |||
| 520 | int r; | |||
| 521 | ||||
| 522 | assert(class >= 0)do { if ((__builtin_expect(!!(!(class >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("class >= 0"), "../src/shared/machine-image.c" , 522, __PRETTY_FUNCTION__); } while (0); | |||
| 523 | assert(class < _IMAGE_CLASS_MAX)do { if ((__builtin_expect(!!(!(class < _IMAGE_CLASS_MAX)) ,0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("class < _IMAGE_CLASS_MAX" ), "../src/shared/machine-image.c", 523, __PRETTY_FUNCTION__) ; } while (0); | |||
| 524 | assert(h)do { if ((__builtin_expect(!!(!(h)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("h"), "../src/shared/machine-image.c", 524 , __PRETTY_FUNCTION__); } while (0); | |||
| 525 | ||||
| 526 | NULSTR_FOREACH(path, image_search_path[class])for ((path) = (image_search_path[class]); (path) && * (path); (path) = strchr((path), 0)+1) { | |||
| 527 | _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *d = NULL((void*)0); | |||
| 528 | struct dirent *de; | |||
| 529 | ||||
| 530 | d = opendir(path); | |||
| 531 | if (!d) { | |||
| 532 | if (errno(*__errno_location ()) == ENOENT2) | |||
| 533 | continue; | |||
| 534 | ||||
| 535 | return -errno(*__errno_location ()); | |||
| 536 | } | |||
| 537 | ||||
| 538 | FOREACH_DIRENT_ALL(de, d, return -errno)for ((*__errno_location ()) = 0, de = readdir(d);; (*__errno_location ()) = 0, de = readdir(d)) if (!de) { if ((*__errno_location ( )) > 0) { return -(*__errno_location ()); } break; } else { | |||
| 539 | _cleanup_(image_unrefp)__attribute__((cleanup(image_unrefp))) Image *image = NULL((void*)0); | |||
| 540 | _cleanup_free___attribute__((cleanup(freep))) char *truncated = NULL((void*)0); | |||
| 541 | const char *pretty; | |||
| 542 | struct stat st; | |||
| 543 | ||||
| 544 | if (dot_or_dot_dot(de->d_name)) | |||
| 545 | continue; | |||
| 546 | ||||
| 547 | /* As mentioned above, we follow symlinks on this fstatat(), because we want to permit people | |||
| 548 | * to symlink block devices into the search path */ | |||
| 549 | if (fstatat(dirfd(d), de->d_name, &st, 0) < 0) { | |||
| 550 | if (errno(*__errno_location ()) == ENOENT2) | |||
| 551 | continue; | |||
| 552 | ||||
| 553 | return -errno(*__errno_location ()); | |||
| 554 | } | |||
| 555 | ||||
| 556 | if (S_ISREG(st.st_mode)((((st.st_mode)) & 0170000) == (0100000))) { | |||
| 557 | const char *e; | |||
| 558 | ||||
| 559 | e = endswith(de->d_name, ".raw"); | |||
| 560 | if (!e) | |||
| 561 | continue; | |||
| 562 | ||||
| 563 | truncated = strndup(de->d_name, e - de->d_name); | |||
| 564 | if (!truncated) | |||
| 565 | return -ENOMEM12; | |||
| 566 | ||||
| 567 | pretty = truncated; | |||
| 568 | } else if (S_ISDIR(st.st_mode)((((st.st_mode)) & 0170000) == (0040000)) || S_ISBLK(st.st_mode)((((st.st_mode)) & 0170000) == (0060000))) | |||
| 569 | pretty = de->d_name; | |||
| 570 | else | |||
| 571 | continue; | |||
| 572 | ||||
| 573 | if (!image_name_is_valid(pretty)) | |||
| 574 | continue; | |||
| 575 | ||||
| 576 | if (hashmap_contains(h, pretty)) | |||
| 577 | continue; | |||
| 578 | ||||
| 579 | r = image_make(pretty, dirfd(d), path, de->d_name, &st, &image); | |||
| 580 | if (IN_SET(r, -ENOENT, -EMEDIUMTYPE)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended [20 - sizeof((int[]){-2, -124})/sizeof(int)]; switch(r) { case -2: case -124: _found = 1; break; default: break; } _found; } )) | |||
| 581 | continue; | |||
| 582 | if (r < 0) | |||
| 583 | return r; | |||
| 584 | ||||
| 585 | image->discoverable = true1; | |||
| 586 | ||||
| 587 | r = hashmap_put(h, image->name, image); | |||
| 588 | if (r < 0) | |||
| 589 | return r; | |||
| 590 | ||||
| 591 | image = NULL((void*)0); | |||
| 592 | } | |||
| 593 | } | |||
| 594 | ||||
| 595 | if (class == IMAGE_MACHINE && !hashmap_contains(h, ".host")) { | |||
| 596 | _cleanup_(image_unrefp)__attribute__((cleanup(image_unrefp))) Image *image = NULL((void*)0); | |||
| 597 | ||||
| 598 | r = image_make(".host", AT_FDCWD-100, NULL((void*)0), "/", NULL((void*)0), &image); | |||
| 599 | if (r < 0) | |||
| 600 | return r; | |||
| 601 | ||||
| 602 | image->discoverable = true1; | |||
| 603 | ||||
| 604 | r = hashmap_put(h, image->name, image); | |||
| 605 | if (r < 0) | |||
| 606 | return r; | |||
| 607 | ||||
| 608 | image = NULL((void*)0); | |||
| 609 | } | |||
| 610 | ||||
| 611 | return 0; | |||
| 612 | } | |||
| 613 | ||||
| 614 | int image_remove(Image *i) { | |||
| 615 | _cleanup_(release_lock_file)__attribute__((cleanup(release_lock_file))) LockFile global_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }, local_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 616 | _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **settings = NULL((void*)0); | |||
| 617 | _cleanup_free___attribute__((cleanup(freep))) char *roothash = NULL((void*)0); | |||
| 618 | char **j; | |||
| 619 | int r; | |||
| 620 | ||||
| 621 | assert(i)do { if ((__builtin_expect(!!(!(i)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("i"), "../src/shared/machine-image.c", 621 , __PRETTY_FUNCTION__); } while (0); | |||
| 622 | ||||
| 623 | if (IMAGE_IS_VENDOR(i) || IMAGE_IS_HOST(i)) | |||
| 624 | return -EROFS30; | |||
| 625 | ||||
| 626 | settings = image_settings_path(i); | |||
| 627 | if (!settings) | |||
| 628 | return -ENOMEM12; | |||
| 629 | ||||
| 630 | roothash = image_roothash_path(i); | |||
| 631 | if (!roothash) | |||
| 632 | return -ENOMEM12; | |||
| 633 | ||||
| 634 | /* Make sure we don't interfere with a running nspawn */ | |||
| 635 | r = image_path_lock(i->path, LOCK_EX2|LOCK_NB4, &global_lock, &local_lock); | |||
| 636 | if (r < 0) | |||
| 637 | return r; | |||
| 638 | ||||
| 639 | switch (i->type) { | |||
| 640 | ||||
| 641 | case IMAGE_SUBVOLUME: | |||
| 642 | ||||
| 643 | /* Let's unlink first, maybe it is a symlink? If that works we are happy. Otherwise, let's get out the | |||
| 644 | * big guns */ | |||
| 645 | if (unlink(i->path) < 0) { | |||
| 646 | r = btrfs_subvol_remove(i->path, BTRFS_REMOVE_RECURSIVE|BTRFS_REMOVE_QUOTA); | |||
| 647 | if (r < 0) | |||
| 648 | return r; | |||
| 649 | } | |||
| 650 | ||||
| 651 | break; | |||
| 652 | ||||
| 653 | case IMAGE_DIRECTORY: | |||
| 654 | /* Allow deletion of read-only directories */ | |||
| 655 | (void) chattr_path(i->path, 0, FS_IMMUTABLE_FL0x00000010); | |||
| 656 | r = rm_rf(i->path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME); | |||
| 657 | if (r < 0) | |||
| 658 | return r; | |||
| 659 | ||||
| 660 | break; | |||
| 661 | ||||
| 662 | case IMAGE_BLOCK: | |||
| 663 | ||||
| 664 | /* If this is inside of /dev, then it's a real block device, hence let's not touch the device node | |||
| 665 | * itself (but let's remove the stuff stored alongside it). If it's anywhere else, let's try to unlink | |||
| 666 | * the thing (it's most likely a symlink after all). */ | |||
| 667 | ||||
| 668 | if (path_startswith(i->path, "/dev")) | |||
| 669 | break; | |||
| 670 | ||||
| 671 | _fallthrough_; | |||
| 672 | case IMAGE_RAW: | |||
| 673 | if (unlink(i->path) < 0) | |||
| 674 | return -errno(*__errno_location ()); | |||
| 675 | break; | |||
| 676 | ||||
| 677 | default: | |||
| 678 | return -EOPNOTSUPP95; | |||
| 679 | } | |||
| 680 | ||||
| 681 | STRV_FOREACH(j, settings)for ((j) = (settings); (j) && *(j); (j)++) { | |||
| 682 | if (unlink(*j) < 0 && errno(*__errno_location ()) != ENOENT2) | |||
| 683 | log_debug_errno(errno, "Failed to unlink %s, ignoring: %m", *j)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/shared/machine-image.c", 683, __func__ , "Failed to unlink %s, ignoring: %m", *j) : -abs(_e); }); | |||
| 684 | } | |||
| 685 | ||||
| 686 | if (unlink(roothash) < 0 && errno(*__errno_location ()) != ENOENT2) | |||
| 687 | log_debug_errno(errno, "Failed to unlink %s, ignoring: %m", roothash)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/shared/machine-image.c", 687, __func__ , "Failed to unlink %s, ignoring: %m", roothash) : -abs(_e); } ); | |||
| 688 | ||||
| 689 | return 0; | |||
| 690 | } | |||
| 691 | ||||
| 692 | static int rename_auxiliary_file(const char *path, const char *new_name, const char *suffix) { | |||
| 693 | _cleanup_free___attribute__((cleanup(freep))) char *rs = NULL((void*)0); | |||
| 694 | const char *fn; | |||
| 695 | ||||
| 696 | fn = strjoina(new_name, suffix)({ const char *_appendees_[] = { new_name, suffix }; char *_d_ , *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p(typeof (_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); | |||
| 697 | ||||
| 698 | rs = file_in_same_dir(path, fn); | |||
| 699 | if (!rs) | |||
| 700 | return -ENOMEM12; | |||
| 701 | ||||
| 702 | return rename_noreplace(AT_FDCWD-100, path, AT_FDCWD-100, rs); | |||
| 703 | } | |||
| 704 | ||||
| 705 | int image_rename(Image *i, const char *new_name) { | |||
| 706 | _cleanup_(release_lock_file)__attribute__((cleanup(release_lock_file))) LockFile global_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }, local_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }, name_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 707 | _cleanup_free___attribute__((cleanup(freep))) char *new_path = NULL((void*)0), *nn = NULL((void*)0), *roothash = NULL((void*)0); | |||
| 708 | _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **settings = NULL((void*)0); | |||
| 709 | unsigned file_attr = 0; | |||
| 710 | char **j; | |||
| 711 | int r; | |||
| 712 | ||||
| 713 | assert(i)do { if ((__builtin_expect(!!(!(i)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("i"), "../src/shared/machine-image.c", 713 , __PRETTY_FUNCTION__); } while (0); | |||
| ||||
| 714 | ||||
| 715 | if (!image_name_is_valid(new_name)) | |||
| 716 | return -EINVAL22; | |||
| 717 | ||||
| 718 | if (IMAGE_IS_VENDOR(i) || IMAGE_IS_HOST(i)) | |||
| 719 | return -EROFS30; | |||
| 720 | ||||
| 721 | settings = image_settings_path(i); | |||
| 722 | if (!settings
| |||
| 723 | return -ENOMEM12; | |||
| 724 | ||||
| 725 | roothash = image_roothash_path(i); | |||
| 726 | if (!roothash) | |||
| 727 | return -ENOMEM12; | |||
| 728 | ||||
| 729 | /* Make sure we don't interfere with a running nspawn */ | |||
| 730 | r = image_path_lock(i->path, LOCK_EX2|LOCK_NB4, &global_lock, &local_lock); | |||
| 731 | if (r
| |||
| 732 | return r; | |||
| 733 | ||||
| 734 | /* Make sure nobody takes the new name, between the time we | |||
| 735 | * checked it is currently unused in all search paths, and the | |||
| 736 | * time we take possession of it */ | |||
| 737 | r = image_name_lock(new_name, LOCK_EX2|LOCK_NB4, &name_lock); | |||
| 738 | if (r
| |||
| 739 | return r; | |||
| 740 | ||||
| 741 | r = image_find(IMAGE_MACHINE, new_name, NULL((void*)0)); | |||
| 742 | if (r >= 0) | |||
| 743 | return -EEXIST17; | |||
| 744 | if (r != -ENOENT2) | |||
| 745 | return r; | |||
| 746 | ||||
| 747 | switch (i->type) { | |||
| 748 | ||||
| 749 | case IMAGE_DIRECTORY: | |||
| 750 | /* Turn of the immutable bit while we rename the image, so that we can rename it */ | |||
| 751 | (void) read_attr_path(i->path, &file_attr); | |||
| 752 | ||||
| 753 | if (file_attr & FS_IMMUTABLE_FL0x00000010) | |||
| 754 | (void) chattr_path(i->path, 0, FS_IMMUTABLE_FL0x00000010); | |||
| 755 | ||||
| 756 | _fallthrough_; | |||
| 757 | case IMAGE_SUBVOLUME: | |||
| 758 | new_path = file_in_same_dir(i->path, new_name); | |||
| 759 | break; | |||
| 760 | ||||
| 761 | case IMAGE_BLOCK: | |||
| 762 | ||||
| 763 | /* Refuse renaming raw block devices in /dev, the names are picked by udev after all. */ | |||
| 764 | if (path_startswith(i->path, "/dev")) | |||
| 765 | return -EROFS30; | |||
| 766 | ||||
| 767 | new_path = file_in_same_dir(i->path, new_name); | |||
| 768 | break; | |||
| 769 | ||||
| 770 | case IMAGE_RAW: { | |||
| 771 | const char *fn; | |||
| 772 | ||||
| 773 | fn = strjoina(new_name, ".raw")({ const char *_appendees_[] = { new_name, ".raw" }; char *_d_ , *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p(typeof (_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); | |||
| 774 | new_path = file_in_same_dir(i->path, fn); | |||
| 775 | break; | |||
| 776 | } | |||
| 777 | ||||
| 778 | default: | |||
| 779 | return -EOPNOTSUPP95; | |||
| 780 | } | |||
| 781 | ||||
| 782 | if (!new_path) | |||
| 783 | return -ENOMEM12; | |||
| 784 | ||||
| 785 | nn = strdup(new_name); | |||
| 786 | if (!nn) | |||
| 787 | return -ENOMEM12; | |||
| 788 | ||||
| 789 | r = rename_noreplace(AT_FDCWD-100, i->path, AT_FDCWD-100, new_path); | |||
| 790 | if (r < 0) | |||
| 791 | return r; | |||
| 792 | ||||
| 793 | /* Restore the immutable bit, if it was set before */ | |||
| 794 | if (file_attr & FS_IMMUTABLE_FL0x00000010) | |||
| 795 | (void) chattr_path(new_path, FS_IMMUTABLE_FL0x00000010, FS_IMMUTABLE_FL0x00000010); | |||
| 796 | ||||
| 797 | free_and_replace(i->path, new_path)({ free(i->path); (i->path) = (new_path); (new_path) = ( (void*)0); 0; }); | |||
| 798 | free_and_replace(i->name, nn)({ free(i->name); (i->name) = (nn); (nn) = ((void*)0); 0 ; }); | |||
| 799 | ||||
| 800 | STRV_FOREACH(j, settings)for ((j) = (settings); (j) && *(j); (j)++) { | |||
| 801 | r = rename_auxiliary_file(*j, new_name, ".nspawn"); | |||
| 802 | if (r
| |||
| 803 | log_debug_errno(r, "Failed to rename settings file %s, ignoring: %m", *j)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 803, __func__, "Failed to rename settings file %s, ignoring: %m" , *j) : -abs(_e); }); | |||
| 804 | } | |||
| 805 | ||||
| 806 | r = rename_auxiliary_file(roothash, new_name, ".roothash"); | |||
| ||||
| 807 | if (r < 0 && r != -ENOENT2) | |||
| 808 | log_debug_errno(r, "Failed to rename roothash file %s, ignoring: %m", roothash)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 808, __func__, "Failed to rename roothash file %s, ignoring: %m" , roothash) : -abs(_e); }); | |||
| 809 | ||||
| 810 | return 0; | |||
| 811 | } | |||
| 812 | ||||
| 813 | static int clone_auxiliary_file(const char *path, const char *new_name, const char *suffix) { | |||
| 814 | _cleanup_free___attribute__((cleanup(freep))) char *rs = NULL((void*)0); | |||
| 815 | const char *fn; | |||
| 816 | ||||
| 817 | fn = strjoina(new_name, suffix)({ const char *_appendees_[] = { new_name, suffix }; char *_d_ , *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p(typeof (_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); | |||
| 818 | ||||
| 819 | rs = file_in_same_dir(path, fn); | |||
| 820 | if (!rs) | |||
| 821 | return -ENOMEM12; | |||
| 822 | ||||
| 823 | return copy_file_atomic(path, rs, 0664, 0, COPY_REFLINK); | |||
| 824 | } | |||
| 825 | ||||
| 826 | int image_clone(Image *i, const char *new_name, bool_Bool read_only) { | |||
| 827 | _cleanup_(release_lock_file)__attribute__((cleanup(release_lock_file))) LockFile name_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 828 | _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **settings = NULL((void*)0); | |||
| 829 | _cleanup_free___attribute__((cleanup(freep))) char *roothash = NULL((void*)0); | |||
| 830 | const char *new_path; | |||
| 831 | char **j; | |||
| 832 | int r; | |||
| 833 | ||||
| 834 | assert(i)do { if ((__builtin_expect(!!(!(i)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("i"), "../src/shared/machine-image.c", 834 , __PRETTY_FUNCTION__); } while (0); | |||
| 835 | ||||
| 836 | if (!image_name_is_valid(new_name)) | |||
| 837 | return -EINVAL22; | |||
| 838 | ||||
| 839 | settings = image_settings_path(i); | |||
| 840 | if (!settings) | |||
| 841 | return -ENOMEM12; | |||
| 842 | ||||
| 843 | roothash = image_roothash_path(i); | |||
| 844 | if (!roothash) | |||
| 845 | return -ENOMEM12; | |||
| 846 | ||||
| 847 | /* Make sure nobody takes the new name, between the time we | |||
| 848 | * checked it is currently unused in all search paths, and the | |||
| 849 | * time we take possession of it */ | |||
| 850 | r = image_name_lock(new_name, LOCK_EX2|LOCK_NB4, &name_lock); | |||
| 851 | if (r < 0) | |||
| 852 | return r; | |||
| 853 | ||||
| 854 | r = image_find(IMAGE_MACHINE, new_name, NULL((void*)0)); | |||
| 855 | if (r >= 0) | |||
| 856 | return -EEXIST17; | |||
| 857 | if (r != -ENOENT2) | |||
| 858 | return r; | |||
| 859 | ||||
| 860 | switch (i->type) { | |||
| 861 | ||||
| 862 | case IMAGE_SUBVOLUME: | |||
| 863 | case IMAGE_DIRECTORY: | |||
| 864 | /* If we can we'll always try to create a new btrfs subvolume here, even if the source is a plain | |||
| 865 | * directory. */ | |||
| 866 | ||||
| 867 | new_path = strjoina("/var/lib/machines/", new_name)({ const char *_appendees_[] = { "/var/lib/machines/", new_name }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); | |||
| 868 | ||||
| 869 | r = btrfs_subvol_snapshot(i->path, new_path, | |||
| 870 | (read_only ? BTRFS_SNAPSHOT_READ_ONLY : 0) | | |||
| 871 | BTRFS_SNAPSHOT_FALLBACK_COPY | | |||
| 872 | BTRFS_SNAPSHOT_FALLBACK_DIRECTORY | | |||
| 873 | BTRFS_SNAPSHOT_FALLBACK_IMMUTABLE | | |||
| 874 | BTRFS_SNAPSHOT_RECURSIVE | | |||
| 875 | BTRFS_SNAPSHOT_QUOTA); | |||
| 876 | if (r >= 0) | |||
| 877 | /* Enable "subtree" quotas for the copy, if we didn't copy any quota from the source. */ | |||
| 878 | (void) btrfs_subvol_auto_qgroup(new_path, 0, true1); | |||
| 879 | ||||
| 880 | break; | |||
| 881 | ||||
| 882 | case IMAGE_RAW: | |||
| 883 | new_path = strjoina("/var/lib/machines/", new_name, ".raw")({ const char *_appendees_[] = { "/var/lib/machines/", new_name , ".raw" }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); | |||
| 884 | ||||
| 885 | r = copy_file_atomic(i->path, new_path, read_only ? 0444 : 0644, FS_NOCOW_FL0x00800000, COPY_REFLINK); | |||
| 886 | break; | |||
| 887 | ||||
| 888 | case IMAGE_BLOCK: | |||
| 889 | default: | |||
| 890 | return -EOPNOTSUPP95; | |||
| 891 | } | |||
| 892 | ||||
| 893 | if (r < 0) | |||
| 894 | return r; | |||
| 895 | ||||
| 896 | STRV_FOREACH(j, settings)for ((j) = (settings); (j) && *(j); (j)++) { | |||
| 897 | r = clone_auxiliary_file(*j, new_name, ".nspawn"); | |||
| 898 | if (r < 0 && r != -ENOENT2) | |||
| 899 | log_debug_errno(r, "Failed to clone settings %s, ignoring: %m", *j)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 899, __func__, "Failed to clone settings %s, ignoring: %m" , *j) : -abs(_e); }); | |||
| 900 | } | |||
| 901 | ||||
| 902 | r = clone_auxiliary_file(roothash, new_name, ".roothash"); | |||
| 903 | if (r < 0 && r != -ENOENT2) | |||
| 904 | log_debug_errno(r, "Failed to clone root hash file %s, ignoring: %m", roothash)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 904, __func__, "Failed to clone root hash file %s, ignoring: %m" , roothash) : -abs(_e); }); | |||
| 905 | ||||
| 906 | return 0; | |||
| 907 | } | |||
| 908 | ||||
| 909 | int image_read_only(Image *i, bool_Bool b) { | |||
| 910 | _cleanup_(release_lock_file)__attribute__((cleanup(release_lock_file))) LockFile global_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }, local_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 911 | int r; | |||
| 912 | ||||
| 913 | assert(i)do { if ((__builtin_expect(!!(!(i)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("i"), "../src/shared/machine-image.c", 913 , __PRETTY_FUNCTION__); } while (0); | |||
| 914 | ||||
| 915 | if (IMAGE_IS_VENDOR(i) || IMAGE_IS_HOST(i)) | |||
| 916 | return -EROFS30; | |||
| 917 | ||||
| 918 | /* Make sure we don't interfere with a running nspawn */ | |||
| 919 | r = image_path_lock(i->path, LOCK_EX2|LOCK_NB4, &global_lock, &local_lock); | |||
| 920 | if (r < 0) | |||
| 921 | return r; | |||
| 922 | ||||
| 923 | switch (i->type) { | |||
| 924 | ||||
| 925 | case IMAGE_SUBVOLUME: | |||
| 926 | ||||
| 927 | /* Note that we set the flag only on the top-level | |||
| 928 | * subvolume of the image. */ | |||
| 929 | ||||
| 930 | r = btrfs_subvol_set_read_only(i->path, b); | |||
| 931 | if (r < 0) | |||
| 932 | return r; | |||
| 933 | ||||
| 934 | break; | |||
| 935 | ||||
| 936 | case IMAGE_DIRECTORY: | |||
| 937 | /* For simple directory trees we cannot use the access | |||
| 938 | mode of the top-level directory, since it has an | |||
| 939 | effect on the container itself. However, we can | |||
| 940 | use the "immutable" flag, to at least make the | |||
| 941 | top-level directory read-only. It's not as good as | |||
| 942 | a read-only subvolume, but at least something, and | |||
| 943 | we can read the value back. */ | |||
| 944 | ||||
| 945 | r = chattr_path(i->path, b ? FS_IMMUTABLE_FL0x00000010 : 0, FS_IMMUTABLE_FL0x00000010); | |||
| 946 | if (r < 0) | |||
| 947 | return r; | |||
| 948 | ||||
| 949 | break; | |||
| 950 | ||||
| 951 | case IMAGE_RAW: { | |||
| 952 | struct stat st; | |||
| 953 | ||||
| 954 | if (stat(i->path, &st) < 0) | |||
| 955 | return -errno(*__errno_location ()); | |||
| 956 | ||||
| 957 | if (chmod(i->path, (st.st_mode & 0444) | (b ? 0000 : 0200)) < 0) | |||
| 958 | return -errno(*__errno_location ()); | |||
| 959 | ||||
| 960 | /* If the images is now read-only, it's a good time to | |||
| 961 | * defrag it, given that no write patterns will | |||
| 962 | * fragment it again. */ | |||
| 963 | if (b) | |||
| 964 | (void) btrfs_defrag(i->path); | |||
| 965 | break; | |||
| 966 | } | |||
| 967 | ||||
| 968 | case IMAGE_BLOCK: { | |||
| 969 | _cleanup_close___attribute__((cleanup(closep))) int fd = -1; | |||
| 970 | struct stat st; | |||
| 971 | int state = b; | |||
| 972 | ||||
| 973 | fd = open(i->path, O_CLOEXEC02000000|O_RDONLY00|O_NONBLOCK04000|O_NOCTTY0400); | |||
| 974 | if (fd < 0) | |||
| 975 | return -errno(*__errno_location ()); | |||
| 976 | ||||
| 977 | if (fstat(fd, &st) < 0) | |||
| 978 | return -errno(*__errno_location ()); | |||
| 979 | if (!S_ISBLK(st.st_mode)((((st.st_mode)) & 0170000) == (0060000))) | |||
| 980 | return -ENOTTY25; | |||
| 981 | ||||
| 982 | if (ioctl(fd, BLKROSET(((0U) << (((0 +8)+8)+14)) | (((0x12)) << (0 +8)) | (((93)) << 0) | ((0) << ((0 +8)+8))), &state) < 0) | |||
| 983 | return -errno(*__errno_location ()); | |||
| 984 | ||||
| 985 | break; | |||
| 986 | } | |||
| 987 | ||||
| 988 | default: | |||
| 989 | return -EOPNOTSUPP95; | |||
| 990 | } | |||
| 991 | ||||
| 992 | return 0; | |||
| 993 | } | |||
| 994 | ||||
| 995 | int image_path_lock(const char *path, int operation, LockFile *global, LockFile *local) { | |||
| 996 | _cleanup_free___attribute__((cleanup(freep))) char *p = NULL((void*)0); | |||
| 997 | LockFile t = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 998 | struct stat st; | |||
| 999 | int r; | |||
| 1000 | ||||
| 1001 | assert(path)do { if ((__builtin_expect(!!(!(path)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("path"), "../src/shared/machine-image.c" , 1001, __PRETTY_FUNCTION__); } while (0); | |||
| 1002 | assert(global)do { if ((__builtin_expect(!!(!(global)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("global"), "../src/shared/machine-image.c" , 1002, __PRETTY_FUNCTION__); } while (0); | |||
| 1003 | assert(local)do { if ((__builtin_expect(!!(!(local)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("local"), "../src/shared/machine-image.c" , 1003, __PRETTY_FUNCTION__); } while (0); | |||
| 1004 | ||||
| 1005 | /* Locks an image path. This actually creates two locks: one | |||
| 1006 | * "local" one, next to the image path itself, which might be | |||
| 1007 | * shared via NFS. And another "global" one, in /run, that | |||
| 1008 | * uses the device/inode number. This has the benefit that we | |||
| 1009 | * can even lock a tree that is a mount point, correctly. */ | |||
| 1010 | ||||
| 1011 | if (!path_is_absolute(path)) | |||
| 1012 | return -EINVAL22; | |||
| 1013 | ||||
| 1014 | if (getenv_bool("SYSTEMD_NSPAWN_LOCK") == 0) { | |||
| 1015 | *local = *global = (LockFile) LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 1016 | return 0; | |||
| 1017 | } | |||
| 1018 | ||||
| 1019 | if (path_equal(path, "/")) | |||
| 1020 | return -EBUSY16; | |||
| 1021 | ||||
| 1022 | if (stat(path, &st) >= 0) { | |||
| 1023 | if (S_ISBLK(st.st_mode)((((st.st_mode)) & 0170000) == (0060000))) | |||
| 1024 | r = asprintf(&p, "/run/systemd/nspawn/locks/block-%u:%u", major(st.st_rdev)gnu_dev_major (st.st_rdev), minor(st.st_rdev)gnu_dev_minor (st.st_rdev)); | |||
| 1025 | else if (S_ISDIR(st.st_mode)((((st.st_mode)) & 0170000) == (0040000)) || S_ISREG(st.st_mode)((((st.st_mode)) & 0170000) == (0100000))) | |||
| 1026 | r = asprintf(&p, "/run/systemd/nspawn/locks/inode-%lu:%lu", (unsigned long) st.st_dev, (unsigned long) st.st_ino); | |||
| 1027 | else | |||
| 1028 | return -ENOTTY25; | |||
| 1029 | ||||
| 1030 | if (r < 0) | |||
| 1031 | return -ENOMEM12; | |||
| 1032 | } | |||
| 1033 | ||||
| 1034 | /* For block devices we don't need the "local" lock, as the major/minor lock above should be sufficient, since | |||
| 1035 | * block devices are device local anyway. */ | |||
| 1036 | if (!path_startswith(path, "/dev")) { | |||
| 1037 | r = make_lock_file_for(path, operation, &t); | |||
| 1038 | if (r < 0) { | |||
| 1039 | if ((operation & LOCK_SH1) && r == -EROFS30) | |||
| 1040 | log_debug_errno(r, "Failed to create shared lock for '%s', ignoring: %m", path)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 1040, __func__, "Failed to create shared lock for '%s', ignoring: %m" , path) : -abs(_e); }); | |||
| 1041 | else | |||
| 1042 | return r; | |||
| 1043 | } | |||
| 1044 | } | |||
| 1045 | ||||
| 1046 | if (p) { | |||
| 1047 | mkdir_p("/run/systemd/nspawn/locks", 0700); | |||
| 1048 | ||||
| 1049 | r = make_lock_file(p, operation, global); | |||
| 1050 | if (r < 0) { | |||
| 1051 | release_lock_file(&t); | |||
| 1052 | return r; | |||
| 1053 | } | |||
| 1054 | } else | |||
| 1055 | *global = (LockFile) LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 1056 | ||||
| 1057 | *local = t; | |||
| 1058 | return 0; | |||
| 1059 | } | |||
| 1060 | ||||
| 1061 | int image_set_limit(Image *i, uint64_t referenced_max) { | |||
| 1062 | assert(i)do { if ((__builtin_expect(!!(!(i)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("i"), "../src/shared/machine-image.c", 1062 , __PRETTY_FUNCTION__); } while (0); | |||
| 1063 | ||||
| 1064 | if (IMAGE_IS_VENDOR(i) || IMAGE_IS_HOST(i)) | |||
| 1065 | return -EROFS30; | |||
| 1066 | ||||
| 1067 | if (i->type != IMAGE_SUBVOLUME) | |||
| 1068 | return -EOPNOTSUPP95; | |||
| 1069 | ||||
| 1070 | /* We set the quota both for the subvolume as well as for the | |||
| 1071 | * subtree. The latter is mostly for historical reasons, since | |||
| 1072 | * we didn't use to have a concept of subtree quota, and hence | |||
| 1073 | * only modified the subvolume quota. */ | |||
| 1074 | ||||
| 1075 | (void) btrfs_qgroup_set_limit(i->path, 0, referenced_max); | |||
| 1076 | (void) btrfs_subvol_auto_qgroup(i->path, 0, true1); | |||
| 1077 | return btrfs_subvol_set_subtree_quota_limit(i->path, 0, referenced_max); | |||
| 1078 | } | |||
| 1079 | ||||
| 1080 | int image_read_metadata(Image *i) { | |||
| 1081 | _cleanup_(release_lock_file)__attribute__((cleanup(release_lock_file))) LockFile global_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }, local_lock = LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 1082 | int r; | |||
| 1083 | ||||
| 1084 | assert(i)do { if ((__builtin_expect(!!(!(i)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("i"), "../src/shared/machine-image.c", 1084 , __PRETTY_FUNCTION__); } while (0); | |||
| 1085 | ||||
| 1086 | r = image_path_lock(i->path, LOCK_SH1|LOCK_NB4, &global_lock, &local_lock); | |||
| 1087 | if (r < 0) | |||
| 1088 | return r; | |||
| 1089 | ||||
| 1090 | switch (i->type) { | |||
| 1091 | ||||
| 1092 | case IMAGE_SUBVOLUME: | |||
| 1093 | case IMAGE_DIRECTORY: { | |||
| 1094 | _cleanup_strv_free___attribute__((cleanup(strv_freep))) char **machine_info = NULL((void*)0), **os_release = NULL((void*)0); | |||
| 1095 | sd_id128_t machine_id = SD_ID128_NULL((const sd_id128_t) { .qwords = { 0, 0 }}); | |||
| 1096 | _cleanup_free___attribute__((cleanup(freep))) char *hostname = NULL((void*)0); | |||
| 1097 | _cleanup_free___attribute__((cleanup(freep))) char *path = NULL((void*)0); | |||
| 1098 | ||||
| 1099 | r = chase_symlinks("/etc/hostname", i->path, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &path); | |||
| 1100 | if (r < 0 && r != -ENOENT2) | |||
| 1101 | log_debug_errno(r, "Failed to chase /etc/hostname in image %s: %m", i->name)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 1101, __func__, "Failed to chase /etc/hostname in image %s: %m" , i->name) : -abs(_e); }); | |||
| 1102 | else if (r >= 0) { | |||
| 1103 | r = read_etc_hostname(path, &hostname); | |||
| 1104 | if (r < 0) | |||
| 1105 | log_debug_errno(errno, "Failed to read /etc/hostname of image %s: %m", i->name)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/shared/machine-image.c", 1105, __func__ , "Failed to read /etc/hostname of image %s: %m", i->name) : -abs(_e); }); | |||
| 1106 | } | |||
| 1107 | ||||
| 1108 | path = mfree(path); | |||
| 1109 | ||||
| 1110 | r = chase_symlinks("/etc/machine-id", i->path, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &path); | |||
| 1111 | if (r < 0 && r != -ENOENT2) | |||
| 1112 | log_debug_errno(r, "Failed to chase /etc/machine-id in image %s: %m", i->name)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 1112, __func__, "Failed to chase /etc/machine-id in image %s: %m" , i->name) : -abs(_e); }); | |||
| 1113 | else if (r >= 0) { | |||
| 1114 | _cleanup_close___attribute__((cleanup(closep))) int fd = -1; | |||
| 1115 | ||||
| 1116 | fd = open(path, O_RDONLY00|O_CLOEXEC02000000|O_NOCTTY0400); | |||
| 1117 | if (fd < 0) | |||
| 1118 | log_debug_errno(errno, "Failed to open %s: %m", path)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/shared/machine-image.c", 1118, __func__ , "Failed to open %s: %m", path) : -abs(_e); }); | |||
| 1119 | else { | |||
| 1120 | r = id128_read_fd(fd, ID128_PLAIN, &machine_id); | |||
| 1121 | if (r < 0) | |||
| 1122 | log_debug_errno(r, "Image %s contains invalid machine ID.", i->name)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 1122, __func__, "Image %s contains invalid machine ID." , i->name) : -abs(_e); }); | |||
| 1123 | } | |||
| 1124 | } | |||
| 1125 | ||||
| 1126 | path = mfree(path); | |||
| 1127 | ||||
| 1128 | r = chase_symlinks("/etc/machine-info", i->path, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &path); | |||
| 1129 | if (r < 0 && r != -ENOENT2) | |||
| 1130 | log_debug_errno(r, "Failed to chase /etc/machine-info in image %s: %m", i->name)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 1130, __func__, "Failed to chase /etc/machine-info in image %s: %m" , i->name) : -abs(_e); }); | |||
| 1131 | else if (r >= 0) { | |||
| 1132 | r = load_env_file_pairs(NULL((void*)0), path, NULL((void*)0), &machine_info); | |||
| 1133 | if (r < 0) | |||
| 1134 | log_debug_errno(r, "Failed to parse machine-info data of %s: %m", i->name)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 1134, __func__, "Failed to parse machine-info data of %s: %m" , i->name) : -abs(_e); }); | |||
| 1135 | } | |||
| 1136 | ||||
| 1137 | r = load_os_release_pairs(i->path, &os_release); | |||
| 1138 | if (r < 0) | |||
| 1139 | log_debug_errno(r, "Failed to read os-release in image, ignoring: %m")({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/shared/machine-image.c", 1139, __func__, "Failed to read os-release in image, ignoring: %m" ) : -abs(_e); }); | |||
| 1140 | ||||
| 1141 | free_and_replace(i->hostname, hostname)({ free(i->hostname); (i->hostname) = (hostname); (hostname ) = ((void*)0); 0; }); | |||
| 1142 | i->machine_id = machine_id; | |||
| 1143 | strv_free_and_replace(i->machine_info, machine_info)({ strv_free(i->machine_info); (i->machine_info) = (machine_info ); (machine_info) = ((void*)0); 0; }); | |||
| 1144 | strv_free_and_replace(i->os_release, os_release)({ strv_free(i->os_release); (i->os_release) = (os_release ); (os_release) = ((void*)0); 0; }); | |||
| 1145 | ||||
| 1146 | break; | |||
| 1147 | } | |||
| 1148 | ||||
| 1149 | case IMAGE_RAW: | |||
| 1150 | case IMAGE_BLOCK: { | |||
| 1151 | _cleanup_(loop_device_unrefp)__attribute__((cleanup(loop_device_unrefp))) LoopDevice *d = NULL((void*)0); | |||
| 1152 | _cleanup_(dissected_image_unrefp)__attribute__((cleanup(dissected_image_unrefp))) DissectedImage *m = NULL((void*)0); | |||
| 1153 | ||||
| 1154 | r = loop_device_make_by_path(i->path, O_RDONLY00, &d); | |||
| 1155 | if (r < 0) | |||
| 1156 | return r; | |||
| 1157 | ||||
| 1158 | r = dissect_image(d->fd, NULL((void*)0), 0, DISSECT_IMAGE_REQUIRE_ROOT, &m); | |||
| 1159 | if (r < 0) | |||
| 1160 | return r; | |||
| 1161 | ||||
| 1162 | r = dissected_image_acquire_metadata(m); | |||
| 1163 | if (r < 0) | |||
| 1164 | return r; | |||
| 1165 | ||||
| 1166 | free_and_replace(i->hostname, m->hostname)({ free(i->hostname); (i->hostname) = (m->hostname); (m->hostname) = ((void*)0); 0; }); | |||
| 1167 | i->machine_id = m->machine_id; | |||
| 1168 | strv_free_and_replace(i->machine_info, m->machine_info)({ strv_free(i->machine_info); (i->machine_info) = (m-> machine_info); (m->machine_info) = ((void*)0); 0; }); | |||
| 1169 | strv_free_and_replace(i->os_release, m->os_release)({ strv_free(i->os_release); (i->os_release) = (m->os_release ); (m->os_release) = ((void*)0); 0; }); | |||
| 1170 | ||||
| 1171 | break; | |||
| 1172 | } | |||
| 1173 | ||||
| 1174 | default: | |||
| 1175 | return -EOPNOTSUPP95; | |||
| 1176 | } | |||
| 1177 | ||||
| 1178 | i->metadata_valid = true1; | |||
| 1179 | ||||
| 1180 | return 0; | |||
| 1181 | } | |||
| 1182 | ||||
| 1183 | int image_name_lock(const char *name, int operation, LockFile *ret) { | |||
| 1184 | const char *p; | |||
| 1185 | ||||
| 1186 | assert(name)do { if ((__builtin_expect(!!(!(name)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("name"), "../src/shared/machine-image.c" , 1186, __PRETTY_FUNCTION__); } while (0); | |||
| 1187 | assert(ret)do { if ((__builtin_expect(!!(!(ret)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/shared/machine-image.c", 1187, __PRETTY_FUNCTION__); } while (0); | |||
| 1188 | ||||
| 1189 | /* Locks an image name, regardless of the precise path used. */ | |||
| 1190 | ||||
| 1191 | if (!image_name_is_valid(name)) | |||
| 1192 | return -EINVAL22; | |||
| 1193 | ||||
| 1194 | if (getenv_bool("SYSTEMD_NSPAWN_LOCK") == 0) { | |||
| 1195 | *ret = (LockFile) LOCK_FILE_INIT{ .fd = -1, .path = ((void*)0) }; | |||
| 1196 | return 0; | |||
| 1197 | } | |||
| 1198 | ||||
| 1199 | if (streq(name, ".host")(strcmp((name),(".host")) == 0)) | |||
| 1200 | return -EBUSY16; | |||
| 1201 | ||||
| 1202 | mkdir_p("/run/systemd/nspawn/locks", 0700); | |||
| 1203 | p = strjoina("/run/systemd/nspawn/locks/name-", name)({ const char *_appendees_[] = { "/run/systemd/nspawn/locks/name-" , name }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for ( _i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); | |||
| 1204 | ||||
| 1205 | return make_lock_file(p, operation, ret); | |||
| 1206 | } | |||
| 1207 | ||||
| 1208 | bool_Bool image_name_is_valid(const char *s) { | |||
| 1209 | if (!filename_is_valid(s)) | |||
| 1210 | return false0; | |||
| 1211 | ||||
| 1212 | if (string_has_cc(s, NULL((void*)0))) | |||
| 1213 | return false0; | |||
| 1214 | ||||
| 1215 | if (!utf8_is_valid(s)) | |||
| 1216 | return false0; | |||
| 1217 | ||||
| 1218 | /* Temporary files for atomically creating new files */ | |||
| 1219 | if (startswith(s, ".#")) | |||
| 1220 | return false0; | |||
| 1221 | ||||
| 1222 | return true1; | |||
| 1223 | } | |||
| 1224 | ||||
| 1225 | bool_Bool image_in_search_path(ImageClass class, const char *image) { | |||
| 1226 | const char *path; | |||
| 1227 | ||||
| 1228 | assert(image)do { if ((__builtin_expect(!!(!(image)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("image"), "../src/shared/machine-image.c" , 1228, __PRETTY_FUNCTION__); } while (0); | |||
| 1229 | ||||
| 1230 | NULSTR_FOREACH(path, image_search_path[class])for ((path) = (image_search_path[class]); (path) && * (path); (path) = strchr((path), 0)+1) { | |||
| 1231 | const char *p; | |||
| 1232 | size_t k; | |||
| 1233 | ||||
| 1234 | p = path_startswith(image, path); | |||
| 1235 | if (!p) | |||
| 1236 | continue; | |||
| 1237 | ||||
| 1238 | /* Make sure there's a filename following */ | |||
| 1239 | k = strcspn(p, "/"); | |||
| 1240 | if (k == 0) | |||
| 1241 | continue; | |||
| 1242 | ||||
| 1243 | p += k; | |||
| 1244 | ||||
| 1245 | /* Accept trailing slashes */ | |||
| 1246 | if (p[strspn(p, "/")] == 0) | |||
| 1247 | return true1; | |||
| 1248 | ||||
| 1249 | } | |||
| 1250 | ||||
| 1251 | return false0; | |||
| 1252 | } | |||
| 1253 | ||||
| 1254 | static const char* const image_type_table[_IMAGE_TYPE_MAX] = { | |||
| 1255 | [IMAGE_DIRECTORY] = "directory", | |||
| 1256 | [IMAGE_SUBVOLUME] = "subvolume", | |||
| 1257 | [IMAGE_RAW] = "raw", | |||
| 1258 | [IMAGE_BLOCK] = "block", | |||
| 1259 | }; | |||
| 1260 | ||||
| 1261 | DEFINE_STRING_TABLE_LOOKUP(image_type, ImageType)const char *image_type_to_string(ImageType i) { if (i < 0 || i >= (ImageType) __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(image_type_table), typeof(&*(image_type_table))), sizeof(image_type_table)/sizeof((image_type_table)[0]), ((void )0)))) return ((void*)0); return image_type_table[i]; } ImageType image_type_from_string(const char *s) { return (ImageType) string_table_lookup (image_type_table, __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(image_type_table), typeof(&*(image_type_table))), sizeof(image_type_table)/sizeof((image_type_table)[0]), ((void )0))), s); }; |