libfdisk/src/script.c

   1
   2 #include "fdiskP.h"
   3 #include "strutils.h"
   4 #include "carefulputc.h"
   5
   6 /**
   7  * SECTION: script
   8  * @title: Script
   9  * @short_description: text based sfdisk compatible description of partition table
  10  *
  11  * The libfdisk scripts are based on original sfdisk script (dumps).  Each
  12  * script has two parts: script headers and partition table entries
  13  * (partitions).
  14  *
  15  * For more details about script format see sfdisk man page.
  16  */
  17
  18 /* script header (e.g. unit: sectors) */
  19 struct fdisk_scriptheader {
  20         struct list_head        headers;
  21         char                    *name;
  22         char                    *data;
  23 };
  24
  25 /* script control struct */
  26 struct fdisk_script {
  27         struct fdisk_table      *table;
  28         struct list_head        headers;
  29         struct fdisk_context    *cxt;
  30
  31         int                     refcount;
  32         char                    *(*fn_fgets)(struct fdisk_script *, char *, size_t, FILE *);
  33         void                    *userdata;
  34
  35         /* parser's state */
  36         size_t                  nlines;
  37         struct fdisk_label      *label;
  38
  39         unsigned int            json : 1;               /* JSON output */
  40 };
  41
  42
  43 static void fdisk_script_free_header(struct fdisk_script *dp, struct fdisk_scriptheader *fi)
  44 {
  45         if (!fi)
  46                 return;
  47
  48         DBG(SCRIPT, ul_debugobj(fi, "free header %s", fi->name));
  49         free(fi->name);
  50         free(fi->data);
  51         list_del(&fi->headers);
  52         free(fi);
  53 }
  54
  55 /**
  56  * fdisk_new_script:
  57  * @cxt: context
  58  *
  59  * The script hold fdisk_table and additional information to read/write
  60  * script to the file.
  61  *
  62  * Returns: newly allocated script struct.
  63  */
  64 struct fdisk_script *fdisk_new_script(struct fdisk_context *cxt)
  65 {
  66         struct fdisk_script *dp = NULL;
  67
  68         dp = calloc(1, sizeof(*dp));
  69         if (!dp)
  70                 return NULL;
  71
  72         DBG(SCRIPT, ul_debugobj(dp, "alloc"));
  73         dp->refcount = 1;
  74         dp->cxt = cxt;
  75         fdisk_ref_context(cxt);
  76
  77         dp->table = fdisk_new_table();
  78         if (!dp->table) {
  79                 fdisk_unref_script(dp);
  80                 return NULL;
  81         }
  82
  83         INIT_LIST_HEAD(&dp->headers);
  84         return dp;
  85 }
  86
  87 /**
  88  * fdisk_new_script_from_file:
  89  * @cxt: context
  90  * @filename: path to the script file
  91  *
  92  * Allocates a new script and reads script from @filename.
  93  *
  94  * Returns: new script instance or NULL in case of error (check errno for more details).
  95  */
  96 struct fdisk_script *fdisk_new_script_from_file(struct fdisk_context *cxt,
  97                                                  const char *filename)
  98 {
  99         int rc;
 100         FILE *f;
 101         struct fdisk_script *dp, *res = NULL;
 102
 103         assert(cxt);
 104         assert(filename);
 105
 106         DBG(SCRIPT, ul_debug("opening %s", filename));
 107         f = fopen(filename, "r");
 108         if (!f)
 109                 return NULL;
 110
 111         dp = fdisk_new_script(cxt);
 112         if (!dp)
 113                 goto done;
 114
 115         rc = fdisk_script_read_file(dp, f);
 116         if (rc) {
 117                 errno = -rc;
 118                 goto done;
 119         }
 120
 121         res = dp;
 122 done:
 123         fclose(f);
 124         if (!res)
 125                 fdisk_unref_script(dp);
 126         else
 127                 errno = 0;
 128
 129         return res;
 130 }
 131
 132 /**
 133  * fdisk_ref_script:
 134  * @dp: script pointer
 135  *
 136  * Incremparts reference counter.
 137  */
 138 void fdisk_ref_script(struct fdisk_script *dp)
 139 {
 140         if (dp)
 141                 dp->refcount++;
 142 }
 143
 144 static void fdisk_reset_script(struct fdisk_script *dp)
 145 {
 146         assert(dp);
 147
 148         DBG(SCRIPT, ul_debugobj(dp, "reset"));
 149         fdisk_unref_table(dp->table);
 150         dp->table = NULL;
 151
 152         while (!list_empty(&dp->headers)) {
 153                 struct fdisk_scriptheader *fi = list_entry(dp->headers.next,
 154                                                   struct fdisk_scriptheader, headers);
 155                 fdisk_script_free_header(dp, fi);
 156         }
 157         INIT_LIST_HEAD(&dp->headers);
 158 }
 159
 160 /**
 161  * fdisk_unref_script:
 162  * @dp: script pointer
 163  *
 164  * De-incremparts reference counter, on zero the @dp is automatically
 165  * deallocated.
 166  */
 167 void fdisk_unref_script(struct fdisk_script *dp)
 168 {
 169         if (!dp)
 170                 return;
 171
 172         dp->refcount--;
 173         if (dp->refcount <= 0) {
 174                 fdisk_reset_script(dp);
 175                 fdisk_unref_context(dp->cxt);
 176                 DBG(SCRIPT, ul_debugobj(dp, "free script"));
 177                 free(dp);
 178         }
 179 }
 180
 181 /**
 182  * fdisk_script_set_userdata
 183  * @dp: script
 184  * @data: your data
 185  *
 186  * Sets data usable for example in callbacks (e.g fdisk_script_set_fgets()).
 187  *
 188  * Returns: 0 on success, <0 on error.
 189  */
 190 int fdisk_script_set_userdata(struct fdisk_script *dp, void *data)
 191 {
 192         assert(dp);
 193         dp->userdata = data;
 194         return 0;
 195 }
 196
 197 /**
 198  * fdisk_script_get_userdata
 199  * @dp: script
 200  *
 201  * Returns: user data or NULL.
 202  */
 203 void *fdisk_script_get_userdata(struct fdisk_script *dp)
 204 {
 205         assert(dp);
 206         return dp->userdata;
 207 }
 208
 209 static struct fdisk_scriptheader *script_get_header(struct fdisk_script *dp,
 210                                                      const char *name)
 211 {
 212         struct list_head *p;
 213
 214         list_for_each(p, &dp->headers) {
 215                 struct fdisk_scriptheader *fi = list_entry(p, struct fdisk_scriptheader, headers);
 216
 217                 if (strcasecmp(fi->name, name) == 0)
 218                         return fi;
 219         }
 220
 221         return NULL;
 222 }
 223
 224 /**
 225  * fdisk_script_get_header:
 226  * @dp: script instance
 227  * @name: header name
 228  *
 229  * Returns: pointer to header data or NULL.
 230  */
 231 const char *fdisk_script_get_header(struct fdisk_script *dp, const char *name)
 232 {
 233         struct fdisk_scriptheader *fi;
 234
 235         assert(dp);
 236         assert(name);
 237
 238         fi = script_get_header(dp, name);
 239         return fi ? fi->data : NULL;
 240 }
 241
 242
 243 /**
 244  * fdisk_script_set_header:
 245  * @dp: script instance
 246  * @name: header name
 247  * @data: header data (or NULL)
 248  *
 249  * The headers are used as global options for whole partition
 250  * table, always one header per line.
 251  *
 252  * If no @data is specified then the header is removed. If header does not exist
 253  * and @data is specified then a new header is added.
 254  *
 255  * Note that libfdisk allows to specify arbitrary custom header, the default
 256  * build-in headers are "unit" and "label", and some label specific headers
 257  * (for example "uuid" and "name" for GPT).
 258  *
 259  * Returns: 0 on success, <0 on error
 260  */
 261 int fdisk_script_set_header(struct fdisk_script *dp,
 262                             const char *name,
 263                             const char *data)
 264 {
 265         struct fdisk_scriptheader *fi;
 266
 267         if (!dp || !name)
 268                 return -EINVAL;
 269
 270         fi = script_get_header(dp, name);
 271         if (!fi && !data)
 272                 return 0;       /* want to remove header that does not exist, success */
 273
 274         if (!data) {
 275                 DBG(SCRIPT, ul_debugobj(dp, "freeing header %s", name));
 276
 277                 /* no data, remove the header */
 278                 fdisk_script_free_header(dp, fi);
 279                 return 0;
 280         }
 281
 282         if (!fi) {
 283                 DBG(SCRIPT, ul_debugobj(dp, "setting new header %s='%s'", name, data));
 284
 285                 /* new header */
 286                 fi = calloc(1, sizeof(*fi));
 287                 if (!fi)
 288                         return -ENOMEM;
 289                 INIT_LIST_HEAD(&fi->headers);
 290                 fi->name = strdup(name);
 291                 fi->data = strdup(data);
 292                 if (!fi->data || !fi->name) {
 293                         fdisk_script_free_header(dp, fi);
 294                         return -ENOMEM;
 295                 }
 296                 list_add_tail(&fi->headers, &dp->headers);
 297         } else {
 298                 /* update existing */
 299                 char *x = strdup(data);
 300
 301                 DBG(SCRIPT, ul_debugobj(dp, "update '%s' header '%s' -> '%s'", name, fi->data, data));
 302
 303                 if (!x)
 304                         return -ENOMEM;
 305                 free(fi->data);
 306                 fi->data = x;
 307         }
 308
 309         if (strcmp(name, "label") == 0)
 310                 dp->label = NULL;
 311
 312         return 0;
 313 }
 314
 315 /**
 316  * fdisk_script_get_table:
 317  * @dp: script
 318  *
 319  * The table (container with partitions) is possible to create by
 320  * fdisk_script_read_context() or fdisk_script_read_file(), otherwise
 321  * this function returns NULL.
 322  *
 323  * Returns: NULL or script.
 324  */
 325 struct fdisk_table *fdisk_script_get_table(struct fdisk_script *dp)
 326 {
 327         assert(dp);
 328         return dp ? dp->table : NULL;
 329 }
 330
 331 static struct fdisk_label *script_get_label(struct fdisk_script *dp)
 332 {
 333         assert(dp);
 334         assert(dp->cxt);
 335
 336         if (!dp->label) {
 337                 dp->label = fdisk_get_label(dp->cxt,
 338                                         fdisk_script_get_header(dp, "label"));
 339                 DBG(SCRIPT, ul_debugobj(dp, "label '%s'", dp->label ? dp->label->name : ""));
 340         }
 341         return dp->label;
 342 }
 343
 344 /**
 345  * fdisk_script_get_nlines:
 346  * @dp: script
 347  *
 348  * Returns: number of parsed lines or <0 on error.
 349  */
 350 int fdisk_script_get_nlines(struct fdisk_script *dp)
 351 {
 352         assert(dp);
 353         return dp->nlines;
 354 }
 355
 356 /**
 357  * fdisk_script_read_context:
 358  * @dp: script
 359  * @cxt: context
 360  *
 361  * Reads data from the @cxt context (on disk partition table) into the script.
 362  * If the context is no specified than defaults to context used for fdisk_new_script().
 363  *
 364  * Return: 0 on success, <0 on error.
 365  */
 366 int fdisk_script_read_context(struct fdisk_script *dp, struct fdisk_context *cxt)
 367 {
 368         struct fdisk_label *lb;
 369         int rc;
 370         char *p = NULL;
 371
 372         if (!dp || (!cxt && !dp->cxt))
 373                 return -EINVAL;
 374
 375         if (!cxt)
 376                 cxt = dp->cxt;
 377
 378         DBG(SCRIPT, ul_debugobj(dp, "reading context into script"));
 379         fdisk_reset_script(dp);
 380
 381         lb = fdisk_get_label(cxt, NULL);
 382         if (!lb)
 383                 return -EINVAL;
 384
 385         /* allocate and fill new table */
 386         rc = fdisk_get_partitions(cxt, &dp->table);
 387         if (rc)
 388                 return rc;
 389
 390         /* generate headers */
 391         rc = fdisk_script_set_header(dp, "label", fdisk_label_get_name(lb));
 392
 393         if (!rc && fdisk_get_disklabel_id(cxt, &p) == 0 && p) {
 394                 rc = fdisk_script_set_header(dp, "label-id", p);
 395                 free(p);
 396         }
 397         if (!rc && cxt->dev_path)
 398                 rc = fdisk_script_set_header(dp, "device", cxt->dev_path);
 399         if (!rc)
 400                 rc = fdisk_script_set_header(dp, "unit", "sectors");
 401
 402         if (!rc && fdisk_is_label(cxt, GPT)) {
 403                 struct fdisk_labelitem item;
 404                 char buf[64];
 405
 406                 rc = fdisk_get_disklabel_item(cxt, GPT_LABELITEM_FIRSTLBA, &item);
 407                 if (rc == 0) {
 408                         snprintf(buf, sizeof(buf), "%ju", item.data.num64);
 409                         rc = fdisk_script_set_header(dp, "first-lba", buf);
 410                 }
 411                 if (rc < 0)
 412                         goto done;
 413
 414                 rc = fdisk_get_disklabel_item(cxt, GPT_LABELITEM_LASTLBA, &item);
 415                 if (rc == 0) {
 416                         snprintf(buf, sizeof(buf), "%ju", item.data.num64);
 417                         rc = fdisk_script_set_header(dp, "last-lba", buf);
 418                 }
 419                 if (rc < 0)
 420                         goto done;
 421         }
 422
 423 done:
 424         DBG(SCRIPT, ul_debugobj(dp, "read context done [rc=%d]", rc));
 425         return rc;
 426 }
 427
 428 /**
 429  * fdisk_script_enable_json:
 430  * @dp: script
 431  * @json: 0 or 1
 432  *
 433  * Disable/Enable JSON output format.
 434  *
 435  * Returns: 0 on success, <0 on error.
 436  */
 437 int fdisk_script_enable_json(struct fdisk_script *dp, int json)
 438 {
 439         assert(dp);
 440
 441         dp->json = json;
 442         return 0;
 443 }
 444
 445 static void fput_indent(int indent, FILE *f)
 446 {
 447         int i;
 448
 449         for (i = 0; i <= indent; i++)
 450                 fputs("   ", f);
 451 }
 452
 453 static int write_file_json(struct fdisk_script *dp, FILE *f)
 454 {
 455         struct list_head *h;
 456         struct fdisk_partition *pa;
 457         struct fdisk_iter itr;
 458         const char *devname = NULL;
 459         int ct = 0, indent = 0;
 460
 461         assert(dp);
 462         assert(f);
 463
 464         DBG(SCRIPT, ul_debugobj(dp, "writing json dump to file"));
 465
 466         fputs("{\n", f);
 467
 468         fput_indent(indent, f);
 469         fputs("\"partitiontable\": {\n", f);
 470         indent++;
 471
 472         /* script headers */
 473         list_for_each(h, &dp->headers) {
 474                 struct fdisk_scriptheader *fi = list_entry(h, struct fdisk_scriptheader, headers);
 475                 const char *name = fi->name;
 476                 int num = 0;
 477
 478                 if (strcmp(name, "first-lba") == 0) {
 479                         name = "firstlba";
 480                         num = 1;
 481                 } else if (strcmp(name, "last-lba") == 0) {
 482                         name = "lastlba";
 483                         num = 1;
 484                 } else if (strcmp(name, "label-id") == 0)
 485                         name = "id";
 486
 487                 fput_indent(indent, f);
 488                 fputs_quoted_lower(name, f);
 489                 fputs(": ", f);
 490                 if (!num)
 491                         fputs_quoted(fi->data, f);
 492                 else
 493                         fputs(fi->data, f);
 494                 if (!dp->table && fi == list_last_entry(&dp->headers, struct fdisk_scriptheader, headers))
 495                         fputc('\n', f);
 496                 else
 497                         fputs(",\n", f);
 498
 499                 if (strcmp(name, "device") == 0)
 500                         devname = fi->data;
 501         }
 502
 503
 504         if (!dp->table) {
 505                 DBG(SCRIPT, ul_debugobj(dp, "script table empty"));
 506                 goto done;
 507         }
 508
 509         DBG(SCRIPT, ul_debugobj(dp, "%zu entries", fdisk_table_get_nents(dp->table)));
 510
 511         fput_indent(indent, f);
 512         fputs("\"partitions\": [\n", f);
 513         indent++;
 514
 515         fdisk_reset_iter(&itr, FDISK_ITER_FORWARD);
 516         while (fdisk_table_next_partition(dp->table, &itr, &pa) == 0) {
 517                 char *p = NULL;
 518
 519                 ct++;
 520                 fput_indent(indent, f);
 521                 fputc('{', f);
 522                 if (devname)
 523                         p = fdisk_partname(devname, pa->partno + 1);
 524                 if (p) {
 525                         DBG(SCRIPT, ul_debugobj(dp, "write %s entry", p));
 526                         fputs("\"node\": ", f);
 527                         fputs_quoted(p, f);
 528                 }
 529
 530                 if (fdisk_partition_has_start(pa))
 531                         fprintf(f, ", \"start\": %ju", pa->start);
 532                 if (fdisk_partition_has_size(pa))
 533                         fprintf(f, ", \"size\": %ju", pa->size);
 534
 535                 if (pa->type && fdisk_parttype_get_string(pa->type))
 536                         fprintf(f, ", \"type\": \"%s\"", fdisk_parttype_get_string(pa->type));
 537                 else if (pa->type)
 538                         fprintf(f, ", \"type\": \"%x\"", fdisk_parttype_get_code(pa->type));
 539
 540                 if (pa->uuid)
 541                         fprintf(f, ", \"uuid\": \"%s\"", pa->uuid);
 542                 if (pa->name && *pa->name) {
 543                         fputs(", \"name\": ", f),
 544                         fputs_quoted(pa->name, f);
 545                 }
 546
 547                 /* for MBR attr=80 means bootable */
 548                 if (pa->attrs) {
 549                         struct fdisk_label *lb = script_get_label(dp);
 550
 551                         if (!lb || fdisk_label_get_type(lb) != FDISK_DISKLABEL_DOS)
 552                                 fprintf(f, ", \"attrs\": \"%s\"", pa->attrs);
 553                 }
 554                 if (fdisk_partition_is_bootable(pa))
 555                         fprintf(f, ", \"bootable\": true");
 556
 557                 if (ct < fdisk_table_get_nents(dp->table))
 558                         fputs("},\n", f);
 559                 else
 560                         fputs("}\n", f);
 561         }
 562
 563         indent--;
 564         fput_indent(indent, f);
 565         fputs("]\n", f);
 566 done:
 567         indent--;
 568         fput_indent(indent, f);
 569         fputs("}\n}\n", f);
 570
 571         DBG(SCRIPT, ul_debugobj(dp, "write script done"));
 572         return 0;
 573 }
 574
 575 static int write_file_sfdisk(struct fdisk_script *dp, FILE *f)
 576 {
 577         struct list_head *h;
 578         struct fdisk_partition *pa;
 579         struct fdisk_iter itr;
 580         const char *devname = NULL;
 581
 582         assert(dp);
 583         assert(f);
 584
 585         DBG(SCRIPT, ul_debugobj(dp, "writing sfdisk-like script to file"));
 586
 587         /* script headers */
 588         list_for_each(h, &dp->headers) {
 589                 struct fdisk_scriptheader *fi = list_entry(h, struct fdisk_scriptheader, headers);
 590                 fprintf(f, "%s: %s\n", fi->name, fi->data);
 591                 if (strcmp(fi->name, "device") == 0)
 592                         devname = fi->data;
 593         }
 594
 595         if (!dp->table) {
 596                 DBG(SCRIPT, ul_debugobj(dp, "script table empty"));
 597                 return 0;
 598         }
 599
 600         DBG(SCRIPT, ul_debugobj(dp, "%zu entries", fdisk_table_get_nents(dp->table)));
 601
 602         fputc('\n', f);
 603
 604         fdisk_reset_iter(&itr, FDISK_ITER_FORWARD);
 605         while (fdisk_table_next_partition(dp->table, &itr, &pa) == 0) {
 606                 char *p = NULL;
 607
 608                 if (devname)
 609                         p = fdisk_partname(devname, pa->partno + 1);
 610                 if (p) {
 611                         DBG(SCRIPT, ul_debugobj(dp, "write %s entry", p));
 612                         fprintf(f, "%s :", p);
 613                 } else
 614                         fprintf(f, "%zu :", pa->partno + 1);
 615
 616                 if (fdisk_partition_has_start(pa))
 617                         fprintf(f, " start=%12ju", pa->start);
 618                 if (fdisk_partition_has_size(pa))
 619                         fprintf(f, ", size=%12ju", pa->size);
 620
 621                 if (pa->type && fdisk_parttype_get_string(pa->type))
 622                         fprintf(f, ", type=%s", fdisk_parttype_get_string(pa->type));
 623                 else if (pa->type)
 624                         fprintf(f, ", type=%x", fdisk_parttype_get_code(pa->type));
 625
 626                 if (pa->uuid)
 627                         fprintf(f, ", uuid=%s", pa->uuid);
 628                 if (pa->name && *pa->name)
 629                         fprintf(f, ", name=\"%s\"", pa->name);
 630
 631                 /* for MBR attr=80 means bootable */
 632                 if (pa->attrs) {
 633                         struct fdisk_label *lb = script_get_label(dp);
 634
 635                         if (!lb || fdisk_label_get_type(lb) != FDISK_DISKLABEL_DOS)
 636                                 fprintf(f, ", attrs=\"%s\"", pa->attrs);
 637                 }
 638                 if (fdisk_partition_is_bootable(pa))
 639                         fprintf(f, ", bootable");
 640                 fputc('\n', f);
 641         }
 642
 643         DBG(SCRIPT, ul_debugobj(dp, "write script done"));
 644         return 0;
 645 }
 646
 647 /**
 648  * fdisk_script_write_file:
 649  * @dp: script
 650  * @f: output file
 651  *
 652  * Writes script @dp to the ile @f.
 653  *
 654  * Returns: 0 on success, <0 on error.
 655  */
 656 int fdisk_script_write_file(struct fdisk_script *dp, FILE *f)
 657 {
 658         assert(dp);
 659
 660         if (dp->json)
 661                 return write_file_json(dp, f);
 662
 663         return write_file_sfdisk(dp, f);
 664 }
 665
 666 static inline int is_header_line(const char *s)
 667 {
 668         const char *p = strchr(s, ':');
 669
 670         if (!p || p == s || !*(p + 1) || strchr(s, '='))
 671                 return 0;
 672
 673         return 1;
 674 }
 675
 676 /* parses "<name>: value", note modifies @s*/
 677 static int parse_line_header(struct fdisk_script *dp, char *s)
 678 {
 679         int rc = -EINVAL;
 680         char *name, *value;
 681
 682         DBG(SCRIPT, ul_debugobj(dp, "   parse header '%s'", s));
 683
 684         if (!s || !*s)
 685                 return -EINVAL;
 686
 687         name = s;
 688         value = strchr(s, ':');
 689         if (!value)
 690                 goto done;
 691         *value = '\0';
 692         value++;
 693
 694         ltrim_whitespace((unsigned char *) name);
 695         rtrim_whitespace((unsigned char *) name);
 696         ltrim_whitespace((unsigned char *) value);
 697         rtrim_whitespace((unsigned char *) value);
 698
 699         if (strcmp(name, "label") == 0) {
 700                 if (dp->cxt && !fdisk_get_label(dp->cxt, value))
 701                         goto done;                      /* unknown label name */
 702         } else if (strcmp(name, "unit") == 0) {
 703                 if (strcmp(value, "sectors") != 0)
 704                         goto done;                      /* only "sectors" supported */
 705         } else if (strcmp(name, "label-id") == 0
 706                    || strcmp(name, "device") == 0
 707                    || strcmp(name, "first-lba") == 0
 708                    || strcmp(name, "last-lba") == 0) {
 709                 ;                                       /* whatever is posssible */
 710         } else
 711                 goto done;                              /* unknown header */
 712
 713         if (*name && *value)
 714                 rc = fdisk_script_set_header(dp, name, value);
 715 done:
 716         if (rc)
 717                 DBG(SCRIPT, ul_debugobj(dp, "header parse error: "
 718                                 "[rc=%d, name='%s', value='%s']",
 719                                 rc, name, value));
 720         return rc;
 721
 722 }
 723
 724 /* returns zero terminated string with next token and @str is updated */
 725 static char *next_token(char **str)
 726 {
 727         char *tk_begin = NULL,
 728              *tk_end = NULL,
 729              *end = NULL,
 730              *p;
 731         int open_quote = 0;
 732
 733         for (p = *str; p && *p; p++) {
 734                 if (!tk_begin) {
 735                         if (isblank(*p))
 736                                 continue;
 737                         tk_begin = *p == '"' ? p + 1 : p;
 738                 }
 739                 if (*p == '"')
 740                         open_quote ^= 1;
 741                 if (open_quote)
 742                         continue;
 743                 if (isblank(*p) || *p == ',' || *p == ';' || *p == '"' )
 744                         tk_end = p;
 745                 else if (*(p + 1) == '\0')
 746                         tk_end = p + 1;
 747                 if (tk_begin && tk_end)
 748                         break;
 749         }
 750
 751         if (!tk_end)
 752                 return NULL;
 753         end = isblank(*tk_end) ? (char *) skip_blank(tk_end) : tk_end;
 754         if (*end == ',' || *end == ';')
 755                 end++;
 756
 757         *tk_end = '\0';
 758         *str = end;
 759         return tk_begin;
 760 }
 761
 762 static int next_number(char **s, uint64_t *num, int *power)
 763 {
 764         char *tk;
 765         int rc = -EINVAL;
 766
 767         assert(num);
 768         assert(s);
 769
 770         tk = next_token(s);
 771         if (tk)
 772                 rc = parse_size(tk, (uintmax_t *) num, power);
 773         return rc;
 774 }
 775
 776 static int next_string(char **s, char **str)
 777 {
 778         char *tk;
 779         int rc = -EINVAL;
 780
 781         assert(s);
 782         assert(str);
 783
 784         tk = next_token(s);
 785         if (tk) {
 786                 *str = strdup(tk);
 787                 rc = !*str ? -ENOMEM : 0;
 788         }
 789         return rc;
 790 }
 791
 792 static int partno_from_devname(char *s)
 793 {
 794         int pno;
 795         size_t sz;
 796         char *end, *p;
 797
 798         sz = rtrim_whitespace((unsigned char *)s);
 799         p = s + sz - 1;
 800
 801         while (p > s && isdigit(*(p - 1)))
 802                 p--;
 803
 804         errno = 0;
 805         pno = strtol(p, &end, 10);
 806         if (errno || !end || p == end)
 807                 return -1;
 808         return pno - 1;
 809 }
 810
 811 /* dump format
 812  * <device>: start=<num>, size=<num>, type=<string>, ...
 813  */
 814 static int parse_line_nameval(struct fdisk_script *dp, char *s)
 815 {
 816         char *p, *x;
 817         struct fdisk_partition *pa;
 818         int rc = 0;
 819         uint64_t num;
 820         int pno;
 821
 822         assert(dp);
 823         assert(s);
 824
 825         DBG(SCRIPT, ul_debugobj(dp, "   parse script line: '%s'", s));
 826
 827         pa = fdisk_new_partition();
 828         if (!pa)
 829                 return -ENOMEM;
 830
 831         fdisk_partition_start_follow_default(pa, 1);
 832         fdisk_partition_end_follow_default(pa, 1);
 833         fdisk_partition_partno_follow_default(pa, 1);
 834
 835         /* set partno */
 836         p = strchr(s, ':');
 837         x = strchr(s, '=');
 838         if (p && (!x || p < x)) {
 839                 *p = '\0';
 840                 p++;
 841
 842                 pno = partno_from_devname(s);
 843                 if (pno >= 0) {
 844                         fdisk_partition_partno_follow_default(pa, 0);
 845                         fdisk_partition_set_partno(pa, pno);
 846                 }
 847         } else
 848                 p = s;
 849
 850         while (rc == 0 && p && *p) {
 851
 852                 DBG(SCRIPT, ul_debugobj(dp, " parsing '%s'", p));
 853                 p = (char *) skip_blank(p);
 854
 855                 if (!strncasecmp(p, "start=", 6)) {
 856                         int pow = 0;
 857                         p += 6;
 858                         rc = next_number(&p, &num, &pow);
 859                         if (!rc) {
 860                                 if (pow)        /* specified as <num><suffix> */
 861                                         num /= dp->cxt->sector_size;
 862                                 fdisk_partition_set_start(pa, num);
 863                                 fdisk_partition_start_follow_default(pa, 0);
 864                         }
 865                 } else if (!strncasecmp(p, "size=", 5)) {
 866                         int pow = 0;
 867
 868                         p += 5;
 869                         rc = next_number(&p, &num, &pow);
 870                         if (!rc) {
 871                                 if (pow)        /* specified as <num><suffix> */
 872                                         num /= dp->cxt->sector_size;
 873                                 else            /* specified as number of sectors */
 874                                         fdisk_partition_size_explicit(pa, 1);
 875                                 fdisk_partition_set_size(pa, num);
 876                                 fdisk_partition_end_follow_default(pa, 0);
 877                         }
 878
 879                 } else if (!strncasecmp(p, "bootable", 8)) {
 880                         char *tk = next_token(&p);
 881                         if (strcmp(tk, "bootable") == 0)
 882                                 pa->boot = 1;
 883                         else
 884                                 rc = -EINVAL;
 885
 886                 } else if (!strncasecmp(p, "attrs=", 6)) {
 887                         p += 6;
 888                         rc = next_string(&p, &pa->attrs);
 889
 890                 } else if (!strncasecmp(p, "uuid=", 5)) {
 891                         p += 5;
 892                         rc = next_string(&p, &pa->uuid);
 893
 894                 } else if (!strncasecmp(p, "name=", 5)) {
 895                         p += 5;
 896                         rc = next_string(&p, &pa->name);
 897
 898                 } else if (!strncasecmp(p, "type=", 5) ||
 899
 900                            !strncasecmp(p, "Id=", 3)) {         /* backward compatiility */
 901                         char *type;
 902
 903                         p += (*p == 'I' ? 3 : 5);               /* "Id=" or "type=" */
 904
 905                         rc = next_string(&p, &type);
 906                         if (rc)
 907                                 break;
 908                         pa->type = fdisk_label_parse_parttype(
 909                                         script_get_label(dp), type);
 910                         free(type);
 911
 912                         if (!pa->type) {
 913                                 rc = -EINVAL;
 914                                 fdisk_unref_parttype(pa->type);
 915                                 pa->type = NULL;
 916                                 break;
 917                         }
 918
 919                 } else {
 920                         DBG(SCRIPT, ul_debugobj(dp, "script parse error: unknown field '%s'", p));
 921                         rc = -EINVAL;
 922                         break;
 923                 }
 924         }
 925
 926         if (!rc)
 927                 rc = fdisk_table_add_partition(dp->table, pa);
 928         if (rc)
 929                 DBG(SCRIPT, ul_debugobj(dp, "script parse error: [rc=%d]", rc));
 930
 931         fdisk_unref_partition(pa);
 932         return rc;
 933 }
 934
 935 /* original sfdisk supports partition types shortcuts like 'L' = Linux native
 936  */
 937 static struct fdisk_parttype *translate_type_shortcuts(struct fdisk_script *dp, char *str)
 938 {
 939         struct fdisk_label *lb;
 940         const char *type = NULL;
 941
 942         if (strlen(str) != 1)
 943                 return NULL;
 944
 945         lb = script_get_label(dp);
 946         if (!lb)
 947                 return NULL;
 948
 949         if (lb->id == FDISK_DISKLABEL_DOS) {
 950                 switch (*str) {
 951                 case 'L':       /* Linux */
 952                         type = "83";
 953                         break;
 954                 case 'S':       /* Swap */
 955                         type = "82";
 956                         break;
 957                 case 'E':       /* Dos extended */
 958                         type = "05";
 959                         break;
 960                 case 'X':       /* Linux extended */
 961                         type = "85";
 962                         break;
 963                 }
 964         } else if (lb->id == FDISK_DISKLABEL_GPT) {
 965                 switch (*str) {
 966                 case 'L':       /* Linux */
 967                         type = "0FC63DAF-8483-4772-8E79-3D69D8477DE4";
 968                         break;
 969                 case 'S':       /* Swap */
 970                         type = "0657FD6D-A4AB-43C4-84E5-0933C84B4F4F";
 971                         break;
 972                 case 'H':       /* Home */
 973                         type = "933AC7E1-2EB4-4F13-B844-0E14E2AEF915";
 974                         break;
 975                 }
 976         }
 977
 978         return type ? fdisk_label_parse_parttype(lb, type) : NULL;
 979 }
 980
 981 #define TK_PLUS         1
 982 #define TK_MINUS        -1
 983
 984 #define alone_sign(_sign, _p)   (_sign && (*_p == '\0' || isblank(*_p)))
 985
 986 /* simple format:
 987  * <start>, <size>, <type>, <bootable>, ...
 988  */
 989 static int parse_line_valcommas(struct fdisk_script *dp, char *s)
 990 {
 991         int rc = 0;
 992         char *p = s, *str;
 993         struct fdisk_partition *pa;
 994         enum { ITEM_START, ITEM_SIZE, ITEM_TYPE, ITEM_BOOTABLE };
 995         int item = -1;
 996
 997         assert(dp);
 998         assert(s);
 999
1000         pa = fdisk_new_partition();
1001         if (!pa)
1002                 return -ENOMEM;
1003
1004         fdisk_partition_start_follow_default(pa, 1);
1005         fdisk_partition_end_follow_default(pa, 1);
1006         fdisk_partition_partno_follow_default(pa, 1);
1007
1008         while (rc == 0 && p && *p) {
1009                 uint64_t num;
1010                 char *begin;
1011                 int sign = 0;
1012
1013                 p = (char *) skip_blank(p);
1014                 item++;
1015
1016                 if (item != ITEM_BOOTABLE) {
1017                         sign = *p == '-' ? TK_MINUS : *p == '+' ? TK_PLUS : 0;
1018                         if (sign)
1019                                 p++;
1020                 }
1021
1022                 DBG(SCRIPT, ul_debugobj(dp, " parsing item %d ('%s')", item, p));
1023                 begin = p;
1024
1025                 switch (item) {
1026                 case ITEM_START:
1027                         if (*p == ',' || *p == ';' || alone_sign(sign, p))
1028                                 fdisk_partition_start_follow_default(pa, 1);
1029                         else {
1030                                 int pow = 0;
1031
1032                                 rc = next_number(&p, &num, &pow);
1033                                 if (!rc) {
1034                                         if (pow)        /* specified as <num><suffix> */
1035                                                 num /= dp->cxt->sector_size;
1036                                         fdisk_partition_set_start(pa, num);
1037                                         pa->movestart = sign == TK_MINUS ? FDISK_MOVE_DOWN :
1038                                                         sign == TK_PLUS  ? FDISK_MOVE_UP :
1039                                                         FDISK_MOVE_NONE;
1040                                 }
1041                                 fdisk_partition_start_follow_default(pa, 0);
1042                         }
1043                         break;
1044                 case ITEM_SIZE:
1045                         if (*p == ',' || *p == ';' || alone_sign(sign, p)) {
1046                                 fdisk_partition_end_follow_default(pa, 1);
1047                                 if (sign == TK_PLUS)
1048                                         /* alone '+' means use all possible space, elone '-' means nothing */
1049                                         pa->resize = FDISK_RESIZE_ENLARGE;
1050                         } else {
1051                                 int pow = 0;
1052                                 rc = next_number(&p, &num, &pow);
1053                                 if (!rc) {
1054                                         if (pow) /* specified as <size><suffix> */
1055                                                 num /= dp->cxt->sector_size;
1056                                         else     /* specified as number of sectors */
1057                                                 fdisk_partition_size_explicit(pa, 1);
1058                                         fdisk_partition_set_size(pa, num);
1059                                         pa->resize = sign == TK_MINUS ? FDISK_RESIZE_REDUCE :
1060                                                      sign == TK_PLUS  ? FDISK_RESIZE_ENLARGE :
1061                                                         FDISK_RESIZE_NONE;
1062                                 }
1063                                 fdisk_partition_end_follow_default(pa, 0);
1064                         }
1065                         break;
1066                 case ITEM_TYPE:
1067                         if (*p == ',' || *p == ';' || alone_sign(sign, p))
1068                                 break;  /* use default type */
1069
1070                         rc = next_string(&p, &str);
1071                         if (rc)
1072                                 break;
1073
1074                         pa->type = translate_type_shortcuts(dp, str);
1075                         if (!pa->type)
1076                                 pa->type = fdisk_label_parse_parttype(
1077                                                 script_get_label(dp), str);
1078                         free(str);
1079
1080                         if (!pa->type) {
1081                                 rc = -EINVAL;
1082                                 fdisk_unref_parttype(pa->type);
1083                                 pa->type = NULL;
1084                                 break;
1085                         }
1086                         break;
1087                 case ITEM_BOOTABLE:
1088                         if (*p == ',' || *p == ';')
1089                                 break;
1090                         else {
1091                                 char *tk = next_token(&p);
1092                                 if (tk && *tk == '*' && *(tk + 1) == '\0')
1093                                         pa->boot = 1;
1094                                 else if (tk && *tk == '-' && *(tk + 1) == '\0')
1095                                         pa->boot = 0;
1096                                 else if (tk && *tk == '+' && *(tk + 1) == '\0')
1097                                         pa->boot = 1;
1098                                 else
1099                                         rc = -EINVAL;
1100                         }
1101                         break;
1102                 default:
1103                         break;
1104                 }
1105
1106                 if (begin == p)
1107                         p++;
1108         }
1109
1110         if (!rc)
1111                 rc = fdisk_table_add_partition(dp->table, pa);
1112         if (rc)
1113                 DBG(SCRIPT, ul_debugobj(dp, "script parse error: [rc=%d]", rc));
1114
1115         fdisk_unref_partition(pa);
1116         return rc;
1117 }
1118
1119 /* modifies @s ! */
1120 int fdisk_script_read_buffer(struct fdisk_script *dp, char *s)
1121 {
1122         int rc = 0;
1123
1124         assert(dp);
1125         assert(s);
1126
1127         DBG(SCRIPT, ul_debugobj(dp, "  parsing buffer"));
1128
1129         s = (char *) skip_blank(s);
1130         if (!s || !*s)
1131                 return 0;       /* nothing baby, ignore */
1132
1133         if (!dp->table) {
1134                 dp->table = fdisk_new_table();
1135                 if (!dp->table)
1136                         return -ENOMEM;
1137         }
1138
1139         /* parse header lines only if no partition specified yet */
1140         if (fdisk_table_is_empty(dp->table) && is_header_line(s))
1141                 rc = parse_line_header(dp, s);
1142
1143         /* parse script format */
1144         else if (strchr(s, '='))
1145                 rc = parse_line_nameval(dp, s);
1146
1147         /* parse simple <value>, ... format */
1148         else
1149                 rc = parse_line_valcommas(dp, s);
1150
1151         if (rc)
1152                 DBG(SCRIPT, ul_debugobj(dp, "%zu: parse error [rc=%d]",
1153                                 dp->nlines, rc));
1154         return rc;
1155 }
1156
1157 /**
1158  * fdisk_script_set_fgets:
1159  * @dp: script
1160  * @fn_fgets: callback function
1161  *
1162  * The library uses fgets() function to read the next line from the script.
1163  * This default maybe overrided to another function. Note that the function has
1164  * to return the line terminated by \n (for example readline(3) removes \n).
1165  *
1166  * Return: 0 on success, <0 on error
1167  */
1168 int fdisk_script_set_fgets(struct fdisk_script *dp,
1169                           char *(*fn_fgets)(struct fdisk_script *, char *, size_t, FILE *))
1170 {
1171         assert(dp);
1172
1173         dp->fn_fgets = fn_fgets;
1174         return 0;
1175 }
1176
1177 /**
1178  * fdisk_script_read_line:
1179  * @dp: script
1180  * @f: file
1181  * @buf: buffer to store one line of the file
1182  * @bufsz: buffer size
1183  *
1184  * Reads next line into dump.
1185  *
1186  * Returns: 0 on success, <0 on error, 1 when nothing to read.
1187  */
1188 int fdisk_script_read_line(struct fdisk_script *dp, FILE *f, char *buf, size_t bufsz)
1189 {
1190         char *s;
1191
1192         assert(dp);
1193         assert(f);
1194
1195         DBG(SCRIPT, ul_debugobj(dp, " parsing line %zu", dp->nlines));
1196
1197         /* read the next non-blank non-comment line */
1198         do {
1199                 if (dp->fn_fgets) {
1200                         if (dp->fn_fgets(dp, buf, bufsz, f) == NULL)
1201                                 return 1;
1202                 } else if (fgets(buf, bufsz, f) == NULL)
1203                         return 1;
1204
1205                 dp->nlines++;
1206                 s = strchr(buf, '\n');
1207                 if (!s) {
1208                         /* Missing final newline?  Otherwise an extremely */
1209                         /* long line - assume file was corrupted */
1210                         if (feof(f)) {
1211                                 DBG(SCRIPT, ul_debugobj(dp, "no final newline"));
1212                                 s = strchr(buf, '\0');
1213                         } else {
1214                                 DBG(SCRIPT, ul_debugobj(dp,
1215                                         "%zu: missing newline at line", dp->nlines));
1216                                 return -EINVAL;
1217                         }
1218                 }
1219
1220                 *s = '\0';
1221                 if (--s >= buf && *s == '\r')
1222                         *s = '\0';
1223                 s = (char *) skip_blank(buf);
1224         } while (*s == '\0' || *s == '#');
1225
1226         return fdisk_script_read_buffer(dp, s);
1227 }
1228
1229
1230 /**
1231  * fdisk_script_read_file:
1232  * @dp: script
1233  * @f: input file
1234  *
1235  * Reads file @f into script @dp.
1236  *
1237  * Returns: 0 on success, <0 on error.
1238  */
1239 int fdisk_script_read_file(struct fdisk_script *dp, FILE *f)
1240 {
1241         char buf[BUFSIZ];
1242         int rc = 1;
1243
1244         assert(dp);
1245         assert(f);
1246
1247         DBG(SCRIPT, ul_debugobj(dp, "parsing file"));
1248
1249         while (!feof(f)) {
1250                 rc = fdisk_script_read_line(dp, f, buf, sizeof(buf));
1251                 if (rc)
1252                         break;
1253         }
1254
1255         if (rc == 1)
1256                 rc = 0;         /* end of file */
1257
1258         DBG(SCRIPT, ul_debugobj(dp, "parsing file done [rc=%d]", rc));
1259         return rc;
1260 }
1261
1262 /**
1263  * fdisk_set_script:
1264  * @cxt: context
1265  * @dp: script (or NULL to remove previous reference)
1266  *
1267  * Sets reference to the @dp script. The script headers might be used by label
1268  * drivers to overwrite built-in defaults (for example disk label Id) and label
1269  * driver might optimize the default semantic to be more usable for scripts
1270  * (for example to not ask for primary/logical/extended partition type).
1271  *
1272  * Note that script also contains reference to the fdisk context (see
1273  * fdisk_new_script()). This context may be completely independent on
1274  * context used for fdisk_set_script().
1275  *
1276  * Returns: <0 on error, 0 on success.
1277  */
1278 int fdisk_set_script(struct fdisk_context *cxt, struct fdisk_script *dp)
1279 {
1280         assert(cxt);
1281
1282         /* unref old */
1283         if (cxt->script)
1284                 fdisk_unref_script(cxt->script);
1285
1286         /* ref new */
1287         cxt->script = dp;
1288         if (cxt->script) {
1289                 DBG(CXT, ul_debugobj(cxt, "setting reference to script %p", cxt->script));
1290                 fdisk_ref_script(cxt->script);
1291         }
1292
1293         return 0;
1294 }
1295
1296 /**
1297  * fdisk_get_script:
1298  * @cxt: context
1299  *
1300  * Returns: the current script or NULL.
1301  */
1302 struct fdisk_script *fdisk_get_script(struct fdisk_context *cxt)
1303 {
1304         assert(cxt);
1305         return cxt->script;
1306 }
1307
1308 /**
1309  * fdisk_apply_script_headers:
1310  * @cxt: context
1311  * @dp: script
1312  *
1313  * Associte context @cxt with script @dp and creates a new empty disklabel.
1314  *
1315  * Returns: 0 on success, <0 on error.
1316  */
1317 int fdisk_apply_script_headers(struct fdisk_context *cxt, struct fdisk_script *dp)
1318 {
1319         const char *name;
1320
1321         assert(cxt);
1322         assert(dp);
1323
1324         DBG(SCRIPT, ul_debugobj(dp, "applying script headers"));
1325         fdisk_set_script(cxt, dp);
1326
1327         /* create empty label */
1328         name = fdisk_script_get_header(dp, "label");
1329         if (!name)
1330                 return -EINVAL;
1331
1332         return fdisk_create_disklabel(cxt, name);
1333 }
1334
1335 /**
1336  * fdisk_apply_script:
1337  * @cxt: context
1338  * @dp: script
1339  *
1340  * This function creates a new disklabel and partition within context @cxt. You
1341  * have to call fdisk_write_disklabel() to apply changes to the device.
1342  *
1343  * Returns: 0 on error, <0 on error.
1344  */
1345 int fdisk_apply_script(struct fdisk_context *cxt, struct fdisk_script *dp)
1346 {
1347         int rc;
1348         struct fdisk_script *old;
1349
1350         assert(dp);
1351         assert(cxt);
1352
1353         DBG(CXT, ul_debugobj(cxt, "applying script %p", dp));
1354
1355         old = fdisk_get_script(cxt);
1356
1357         /* create empty disk label */
1358         rc = fdisk_apply_script_headers(cxt, dp);
1359
1360         /* create partitions */
1361         if (!rc && dp->table)
1362                 rc = fdisk_apply_table(cxt, dp->table);
1363
1364         fdisk_set_script(cxt, old);
1365         DBG(CXT, ul_debugobj(cxt, "script done [rc=%d]", rc));
1366         return rc;
1367 }
1368
1369 #ifdef TEST_PROGRAM
1370 int test_dump(struct fdisk_test *ts, int argc, char *argv[])
1371 {
1372         char *devname = argv[1];
1373         struct fdisk_context *cxt;
1374         struct fdisk_script *dp;
1375
1376         cxt = fdisk_new_context();
1377         fdisk_assign_device(cxt, devname, 1);
1378
1379         dp = fdisk_new_script(cxt);
1380         fdisk_script_read_context(dp, NULL);
1381
1382         fdisk_script_write_file(dp, stdout);
1383         fdisk_unref_script(dp);
1384         fdisk_unref_context(cxt);
1385
1386         return 0;
1387 }
1388
1389 int test_read(struct fdisk_test *ts, int argc, char *argv[])
1390 {
1391         char *filename = argv[1];
1392         struct fdisk_script *dp;
1393         struct fdisk_context *cxt;
1394         FILE *f;
1395
1396         if (!(f = fopen(filename, "r")))
1397                 err(EXIT_FAILURE, "%s: cannot open", filename);
1398
1399         cxt = fdisk_new_context();
1400         dp = fdisk_new_script(cxt);
1401
1402         fdisk_script_read_file(dp, f);
1403         fclose(f);
1404
1405         fdisk_script_write_file(dp, stdout);
1406         fdisk_unref_script(dp);
1407         fdisk_unref_context(cxt);
1408
1409         return 0;
1410 }
1411
1412 int test_stdin(struct fdisk_test *ts, int argc, char *argv[])
1413 {
1414         char buf[BUFSIZ];
1415         struct fdisk_script *dp;
1416         struct fdisk_context *cxt;
1417         int rc = 0;
1418
1419         cxt = fdisk_new_context();
1420         dp = fdisk_new_script(cxt);
1421         fdisk_script_set_header(dp, "label", "dos");
1422
1423         printf("<start>, <size>, <type>, <bootable: *|->\n");
1424         do {
1425                 struct fdisk_partition *pa;
1426                 size_t n = fdisk_table_get_nents(dp->table);
1427
1428                 printf(" #%zu :\n", n + 1);
1429                 rc = fdisk_script_read_line(dp, stdin, buf, sizeof(buf));
1430
1431                 if (rc == 0) {
1432                         pa = fdisk_table_get_partition(dp->table, n);
1433                         printf(" #%zu  %12ju %12ju\n",  n + 1,
1434                                                 fdisk_partition_get_start(pa),
1435                                                 fdisk_partition_get_size(pa));
1436                 }
1437         } while (rc == 0);
1438
1439         if (!rc)
1440                 fdisk_script_write_file(dp, stdout);
1441         fdisk_unref_script(dp);
1442         fdisk_unref_context(cxt);
1443
1444         return rc;
1445 }
1446
1447 int test_apply(struct fdisk_test *ts, int argc, char *argv[])
1448 {
1449         char *devname = argv[1], *scriptname = argv[2];
1450         struct fdisk_context *cxt;
1451         struct fdisk_script *dp = NULL;
1452         struct fdisk_table *tb = NULL;
1453         struct fdisk_iter *itr = NULL;
1454         struct fdisk_partition *pa = NULL;
1455         int rc;
1456
1457         cxt = fdisk_new_context();
1458         fdisk_assign_device(cxt, devname, 0);
1459
1460         dp = fdisk_new_script_from_file(cxt, scriptname);
1461         if (!dp)
1462                 return -errno;
1463
1464         rc = fdisk_apply_script(cxt, dp);
1465         if (rc)
1466                 goto done;
1467         fdisk_unref_script(dp);
1468
1469         /* list result */
1470         fdisk_list_disklabel(cxt);
1471         fdisk_get_partitions(cxt, &tb);
1472
1473         itr = fdisk_new_iter(FDISK_ITER_FORWARD);
1474         while (fdisk_table_next_partition(tb, itr, &pa) == 0) {
1475                 printf(" #%zu  %12ju %12ju\n",  fdisk_partition_get_partno(pa),
1476                                                 fdisk_partition_get_start(pa),
1477                                                 fdisk_partition_get_size(pa));
1478         }
1479
1480 done:
1481         fdisk_free_iter(itr);
1482         fdisk_unref_table(tb);
1483
1484         /*fdisk_write_disklabel(cxt);*/
1485         fdisk_unref_context(cxt);
1486         return 0;
1487 }
1488
1489 int main(int argc, char *argv[])
1490 {
1491         struct fdisk_test tss[] = {
1492         { "--dump",    test_dump,    "<device>            dump PT as script" },
1493         { "--read",    test_read,    "<file>              read PT script from file" },
1494         { "--apply",   test_apply,   "<device> <file>     try apply script from file to device" },
1495         { "--stdin",   test_stdin,   "                    read input like sfdisk" },
1496         { NULL }
1497         };
1498
1499         return fdisk_run_test(tss, argc, argv);
1500 }
1501
1502 #endif