e2fsck/message.c

   1 /*
   2  * message.c --- print e2fsck messages (with compression)
   3  *
   4  * Copyright 1996, 1997 by Theodore Ts'o
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  *
  11  * print_e2fsck_message() prints a message to the user, using
  12  * compression techniques and expansions of abbreviations.
  13  *
  14  * The following % expansions are supported:
  15  *
  16  *      %b      <blk>                   block number
  17  *      %B      <blkcount>              interpret blkcount as blkcount
  18  *      %c      <blk2>                  block number
  19  *      %Di     <dirent>->ino           inode number
  20  *      %Dn     <dirent>->name          string
  21  *      %Dr     <dirent>->rec_len
  22  *      %Dl     <dirent>->name_len
  23  *      %Dt     <dirent>->filetype
  24  *      %d      <dir>                   inode number
  25  *      %g      <group>                 integer
  26  *      %i      <ino>                   inode number
  27  *      %Is     <inode> -> i_size
  28  *      %IS     <inode> -> i_extra_isize
  29  *      %Ib     <inode> -> i_blocks
  30  *      %Il     <inode> -> i_links_count
  31  *      %Im     <inode> -> i_mode
  32  *      %IM     <inode> -> i_mtime
  33  *      %IF     <inode> -> i_faddr
  34  *      %If     <inode> -> i_file_acl
  35  *      %Id     <inode> -> i_size_high
  36  *      %Iu     <inode> -> i_uid
  37  *      %Ig     <inode> -> i_gid
  38  *      %It     <inode type>
  39  *      %j      <ino2>                  inode number
  40  *      %m      <com_err error message>
  41  *      %N      <num>
  42  *      %p      ext2fs_get_pathname of directory <ino>
  43  *      %P      ext2fs_get_pathname of <dirent>->ino with <ino2> as
  44  *                      the containing directory.  (If dirent is NULL
  45  *                      then return the pathname of directory <ino2>)
  46  *      %q      ext2fs_get_pathname of directory <dir>
  47  *      %Q      ext2fs_get_pathname of directory <ino> with <dir> as
  48  *                      the containing directory.
  49  *      %r      <blkcount>              interpret blkcount as refcount
  50  *      %s      <str>                   miscellaneous string
  51  *      %t      time (in <num>)
  52  *      %T      current time
  53  *      %U      quota type (in <num>)
  54  *      %S      backup superblock
  55  *      %X      <num> hexadecimal format
  56  *
  57  * The following '@' expansions are supported:
  58  *
  59  *      @a      extended attribute
  60  *      @A      error allocating
  61  *      @b      block
  62  *      @B      bitmap
  63  *      @c      compress
  64  *      @C      conflicts with some other fs block
  65  *      @D      deleted
  66  *      @d      directory
  67  *      @e      entry
  68  *      @E      Entry '%Dn' in %p (%i)
  69  *      @f      filesystem
  70  *      @F      for @i %i (%Q) is
  71  *      @g      group
  72  *      @h      HTREE directory inode
  73  *      @i      inode
  74  *      @I      illegal
  75  *      @j      journal
  76  *      @l      lost+found
  77  *      @L      is a link
  78  *      @m      multiply-claimed
  79  *      @n      invalid
  80  *      @o      orphaned
  81  *      @p      problem in
  82  *      @q      quota
  83  *      @r      root inode
  84  *      @s      should be
  85  *      @S      superblock
  86  *      @u      unattached
  87  *      @v      device
  88  *      @x      extent
  89  *      @z      zero-length
  90  */
  91
  92 #include "config.h"
  93 #include <stdlib.h>
  94 #include <unistd.h>
  95 #include <string.h>
  96 #include <ctype.h>
  97 #include <termios.h>
  98 #include "support/quotaio.h"
  99
 100 #include "e2fsck.h"
 101 #include "problem.h"
 102
 103 #ifdef __GNUC__
 104 #define _INLINE_ __inline__
 105 #else
 106 #define _INLINE_
 107 #endif
 108
 109 /*
 110  * This structure defines the abbreviations used by the text strings
 111  * below.  The first character in the string is the index letter.  An
 112  * abbreviation of the form '@<i>' is expanded by looking up the index
 113  * letter <i> in the table below.
 114  */
 115 static const char *abbrevs[] = {
 116         N_("aextended attribute"),
 117         N_("Aerror allocating"),
 118         N_("bblock"),
 119         N_("Bbitmap"),
 120         N_("ccompress"),
 121         N_("Cconflicts with some other fs @b"),
 122         N_("ddirectory"),
 123         N_("Ddeleted"),
 124         N_("eentry"),
 125         N_("E@e '%Dn' in %p (%i)"),
 126         N_("ffilesystem"),
 127         N_("Ffor @i %i (%Q) is"),
 128         N_("ggroup"),
 129         N_("hHTREE @d @i"),
 130         N_("iinode"),
 131         N_("Iillegal"),
 132         N_("jjournal"),
 133         N_("llost+found"),
 134         N_("Lis a link"),
 135         N_("mmultiply-claimed"),
 136         N_("ninvalid"),
 137         N_("oorphaned"),
 138         N_("pproblem in"),
 139         N_("qquota"),
 140         N_("rroot @i"),
 141         N_("sshould be"),
 142         N_("Ssuper@b"),
 143         N_("uunattached"),
 144         N_("vdevice"),
 145         N_("xextent"),
 146         N_("zzero-length"),
 147         "@@",
 148         0
 149         };
 150
 151 /*
 152  * Give more user friendly names to the "special" inodes.
 153  */
 154 #define num_special_inodes      11
 155 static const char *special_inode_name[] =
 156 {
 157         N_("<The NULL inode>"),                 /* 0 */
 158         N_("<The bad blocks inode>"),           /* 1 */
 159         "/",                                    /* 2 */
 160         N_("<The user quota inode>"),           /* 3 */
 161         N_("<The group quota inode>"),          /* 4 */
 162         N_("<The boot loader inode>"),          /* 5 */
 163         N_("<The undelete directory inode>"),   /* 6 */
 164         N_("<The group descriptor inode>"),     /* 7 */
 165         N_("<The journal inode>"),              /* 8 */
 166         N_("<Reserved inode 9>"),               /* 9 */
 167         N_("<Reserved inode 10>"),              /* 10 */
 168 };
 169
 170 /*
 171  * This function does "safe" printing.  It will convert non-printable
 172  * ASCII characters using '^' and M- notation.
 173  */
 174 static void safe_print(FILE *f, const char *cp, int len)
 175 {
 176         unsigned char   ch;
 177
 178         if (len < 0)
 179                 len = strlen(cp);
 180
 181         while (len--) {
 182                 ch = *cp++;
 183                 if (ch > 128) {
 184                         fputs("M-", f);
 185                         ch -= 128;
 186                 }
 187                 if ((ch < 32) || (ch == 0x7f)) {
 188                         fputc('^', f);
 189                         ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */
 190                 }
 191                 fputc(ch, f);
 192         }
 193 }
 194
 195
 196 /*
 197  * This function prints a pathname, using the ext2fs_get_pathname
 198  * function
 199  */
 200 static void print_pathname(FILE *f, ext2_filsys fs, ext2_ino_t dir,
 201                            ext2_ino_t ino)
 202 {
 203         errcode_t       retval = 0;
 204         char            *path;
 205
 206         if (!dir && (ino < num_special_inodes)) {
 207                 fputs(_(special_inode_name[ino]), f);
 208                 return;
 209         }
 210
 211         if (fs)
 212                 retval = ext2fs_get_pathname(fs, dir, ino, &path);
 213         if (!fs || retval)
 214                 fputs("???", f);
 215         else {
 216                 safe_print(f, path, -1);
 217                 ext2fs_free_mem(&path);
 218         }
 219 }
 220
 221 static void print_time(FILE *f, time_t t)
 222 {
 223         const char *            time_str;
 224         static int              do_gmt = -1;
 225
 226 #ifdef __dietlibc__
 227                 /* The diet libc doesn't respect the TZ environment variable */
 228                 if (do_gmt == -1) {
 229                         time_str = getenv("TZ");
 230                         if (!time_str)
 231                                 time_str = "";
 232                         do_gmt = !strcmp(time_str, "GMT") ||
 233                                 !strcmp(time_str, "GMT0");
 234                 }
 235 #endif
 236                 time_str = asctime((do_gmt > 0) ? gmtime(&t) : localtime(&t));
 237                 fprintf(f, "%.24s", time_str);
 238 }
 239
 240 /*
 241  * This function handles the '@' expansion.  We allow recursive
 242  * expansion; an @ expression can contain further '@' and '%'
 243  * expressions.
 244  */
 245 static _INLINE_ void expand_at_expression(FILE *f, e2fsck_t ctx, char ch,
 246                                           struct problem_context *pctx,
 247                                           int *first, int recurse)
 248 {
 249         const char **cpp, *str;
 250
 251         /* Search for the abbreviation */
 252         for (cpp = abbrevs; *cpp; cpp++) {
 253                 if (ch == *cpp[0])
 254                         break;
 255         }
 256         if (*cpp && recurse < 10) {
 257                 str = _(*cpp) + 1;
 258                 if (*first && islower(*str)) {
 259                         *first = 0;
 260                         fputc(toupper(*str++), f);
 261                 }
 262                 print_e2fsck_message(f, ctx, str, pctx, *first, recurse+1);
 263         } else
 264                 fprintf(f, "@%c", ch);
 265 }
 266
 267 /*
 268  * This function expands '%IX' expressions
 269  */
 270 static _INLINE_ void expand_inode_expression(FILE *f, ext2_filsys fs, char ch,
 271                                              struct problem_context *ctx)
 272 {
 273         struct ext2_inode       *inode;
 274         struct ext2_inode_large *large_inode;
 275
 276         if (!ctx || !ctx->inode)
 277                 goto no_inode;
 278
 279         inode = ctx->inode;
 280         large_inode = (struct ext2_inode_large *) inode;
 281
 282         switch (ch) {
 283         case 's':
 284                 if (LINUX_S_ISDIR(inode->i_mode))
 285                         fprintf(f, "%u", inode->i_size);
 286                 else
 287                         fprintf(f, "%llu", EXT2_I_SIZE(inode));
 288                 break;
 289         case 'S':
 290                 fprintf(f, "%u", large_inode->i_extra_isize);
 291                 break;
 292         case 'b':
 293                 if (ext2fs_has_feature_huge_file(fs->super))
 294                         fprintf(f, "%llu", inode->i_blocks +
 295                                 (((long long) inode->osd2.linux2.l_i_blocks_hi)
 296                                  << 32));
 297                 else
 298                         fprintf(f, "%u", inode->i_blocks);
 299                 break;
 300         case 'l':
 301                 fprintf(f, "%d", inode->i_links_count);
 302                 break;
 303         case 'm':
 304                 fprintf(f, "0%o", inode->i_mode);
 305                 break;
 306         case 'M':
 307                 print_time(f, inode->i_mtime);
 308                 break;
 309         case 'F':
 310                 fprintf(f, "%u", inode->i_faddr);
 311                 break;
 312         case 'f':
 313                 fprintf(f, "%llu", ext2fs_file_acl_block(fs, inode));
 314                 break;
 315         case 'd':
 316                 fprintf(f, "%u", (LINUX_S_ISDIR(inode->i_mode) ?
 317                         inode->i_size_high : 0));
 318                 break;
 319         case 'u':
 320                 fprintf(f, "%d", inode_uid(*inode));
 321                 break;
 322         case 'g':
 323                 fprintf(f, "%d", inode_gid(*inode));
 324                 break;
 325         case 't':
 326                 if (LINUX_S_ISREG(inode->i_mode))
 327                         fputs(_("regular file"), f);
 328                 else if (LINUX_S_ISDIR(inode->i_mode))
 329                         fputs(_("directory"), f);
 330                 else if (LINUX_S_ISCHR(inode->i_mode))
 331                         fputs(_("character device"), f);
 332                 else if (LINUX_S_ISBLK(inode->i_mode))
 333                         fputs(_("block device"), f);
 334                 else if (LINUX_S_ISFIFO(inode->i_mode))
 335                         fputs(_("named pipe"), f);
 336                 else if (LINUX_S_ISLNK(inode->i_mode))
 337                         fputs(_("symbolic link"), f);
 338                 else if (LINUX_S_ISSOCK(inode->i_mode))
 339                         fputs(_("socket"), f);
 340                 else
 341                         fprintf(f, _("unknown file type with mode 0%o"),
 342                                 inode->i_mode);
 343                 break;
 344         default:
 345         no_inode:
 346                 fprintf(f, "%%I%c", ch);
 347                 break;
 348         }
 349 }
 350
 351 /*
 352  * This function expands '%dX' expressions
 353  */
 354 static _INLINE_ void expand_dirent_expression(FILE *f, ext2_filsys fs, char ch,
 355                                               struct problem_context *ctx)
 356 {
 357         struct ext2_dir_entry   *dirent;
 358         unsigned int rec_len, len;
 359
 360         if (!ctx || !ctx->dirent)
 361                 goto no_dirent;
 362
 363         dirent = ctx->dirent;
 364
 365         switch (ch) {
 366         case 'i':
 367                 fprintf(f, "%u", dirent->inode);
 368                 break;
 369         case 'n':
 370                 len = ext2fs_dirent_name_len(dirent);
 371                 if ((ext2fs_get_rec_len(fs, dirent, &rec_len) == 0) &&
 372                     (len > rec_len))
 373                         len = rec_len;
 374                 safe_print(f, dirent->name, len);
 375                 break;
 376         case 'r':
 377                 (void) ext2fs_get_rec_len(fs, dirent, &rec_len);
 378                 fprintf(f, "%u", rec_len);
 379                 break;
 380         case 'l':
 381                 fprintf(f, "%u", ext2fs_dirent_name_len(dirent));
 382                 break;
 383         case 't':
 384                 fprintf(f, "%u", ext2fs_dirent_file_type(dirent));
 385                 break;
 386         default:
 387         no_dirent:
 388                 fprintf(f, "%%D%c", ch);
 389                 break;
 390         }
 391 }
 392
 393 static _INLINE_ void expand_percent_expression(FILE *f, ext2_filsys fs,
 394                                                char ch, int width, int *first,
 395                                                struct problem_context *ctx)
 396 {
 397         e2fsck_t e2fsck_ctx = fs ? (e2fsck_t) fs->priv_data : NULL;
 398         const char *m;
 399
 400         if (!ctx)
 401                 goto no_context;
 402
 403         switch (ch) {
 404         case '%':
 405                 fputc('%', f);
 406                 break;
 407         case 'b':
 408                 fprintf(f, "%*llu", width, (unsigned long long) ctx->blk);
 409                 break;
 410         case 'B':
 411                 if (ctx->blkcount == BLOCK_COUNT_IND)
 412                         m = _("indirect block");
 413                 else if (ctx->blkcount == BLOCK_COUNT_DIND)
 414                         m = _("double indirect block");
 415                 else if (ctx->blkcount == BLOCK_COUNT_TIND)
 416                         m = _("triple indirect block");
 417                 else if (ctx->blkcount == BLOCK_COUNT_TRANSLATOR)
 418                         m = _("translator block");
 419                 else
 420                         m = _("block #");
 421                 if (*first && islower(m[0]))
 422                         fputc(toupper(*m++), f);
 423                 fputs(m, f);
 424                 if (ctx->blkcount >= 0)
 425                         fprintf(f, "%lld", (long long) ctx->blkcount);
 426                 break;
 427         case 'c':
 428                 fprintf(f, "%*llu", width, (unsigned long long) ctx->blk2);
 429                 break;
 430         case 'd':
 431                 fprintf(f, "%*u", width, ctx->dir);
 432                 break;
 433         case 'g':
 434                 fprintf(f, "%*u", width, ctx->group);
 435                 break;
 436         case 'i':
 437                 fprintf(f, "%*u", width, ctx->ino);
 438                 break;
 439         case 'j':
 440                 fprintf(f, "%*u", width, ctx->ino2);
 441                 break;
 442         case 'm':
 443                 fprintf(f, "%*s", width, error_message(ctx->errcode));
 444                 break;
 445         case 'N':
 446                 fprintf(f, "%*llu", width, (long long)ctx->num);
 447                 break;
 448         case 'n':
 449                 fprintf(f, "%*llu", width, (long long)ctx->num2);
 450                 break;
 451         case 'p':
 452                 print_pathname(f, fs, ctx->ino, 0);
 453                 break;
 454         case 'P':
 455                 print_pathname(f, fs, ctx->ino2,
 456                                ctx->dirent ? ctx->dirent->inode : 0);
 457                 break;
 458         case 'q':
 459                 print_pathname(f, fs, ctx->dir, 0);
 460                 break;
 461         case 'Q':
 462                 print_pathname(f, fs, ctx->dir, ctx->ino);
 463                 break;
 464         case 'r':
 465                 fprintf(f, "%*lld", width, (long long) ctx->blkcount);
 466                 break;
 467         case 'S':
 468                 fprintf(f, "%llu", get_backup_sb(NULL, fs, NULL, NULL));
 469                 break;
 470         case 's':
 471                 fprintf(f, "%*s", width, ctx->str ? ctx->str : "NULL");
 472                 break;
 473         case 't':
 474                 print_time(f, (time_t) ctx->num);
 475                 break;
 476         case 'T':
 477                 print_time(f, e2fsck_ctx ? e2fsck_ctx->now : time(0));
 478                 break;
 479         case 'U':
 480                 switch (ctx->num) {
 481                 case USRQUOTA:
 482                         m = _("user");
 483                         break;
 484                 case GRPQUOTA:
 485                         m = _("group");
 486                         break;
 487                 case PRJQUOTA:
 488                         m = _("project");
 489                         break;
 490                 default:
 491                         m = _("unknown quota type");
 492                         break;
 493                 }
 494                 if (*first && islower(m[0]))
 495                         fputc(toupper(*m++), f);
 496                 fputs(m, f);
 497                 if (ctx->num > PRJQUOTA)
 498                         fprintf(f, " %d", (int) ctx->num);
 499                 break;
 500         case 'x':
 501                 fprintf(f, "0x%0*x", width, ctx->csum1);
 502                 break;
 503         case 'X':
 504                 fprintf(f, "0x%0*llx", width, (long long)ctx->num);
 505                 break;
 506         case 'y':
 507                 fprintf(f, "0x%0*x", width, ctx->csum2);
 508                 break;
 509         default:
 510         no_context:
 511                 fprintf(f, "%%%c", ch);
 512                 break;
 513         }
 514 }
 515
 516 void print_e2fsck_message(FILE *f, e2fsck_t ctx, const char *msg,
 517                           struct problem_context *pctx, int first,
 518                           int recurse)
 519 {
 520         ext2_filsys fs = ctx->fs;
 521         const char *    cp;
 522         int             i, width;
 523
 524         e2fsck_clear_progbar(ctx);
 525         for (cp = msg; *cp; cp++) {
 526                 if (cp[0] == '@') {
 527                         cp++;
 528                         expand_at_expression(f, ctx, *cp, pctx, &first,
 529                                              recurse);
 530                 } else if (cp[0] == '%') {
 531                         cp++;
 532                         width = 0;
 533                         while (isdigit(cp[0])) {
 534                                 width = (width * 10) + cp[0] - '0';
 535                                 cp++;
 536                         }
 537                         if (cp[0] == 'I') {
 538                                 cp++;
 539                                 expand_inode_expression(f, fs, *cp, pctx);
 540                         } else if (cp[0] == 'D') {
 541                                 cp++;
 542                                 expand_dirent_expression(f, fs, *cp, pctx);
 543                         } else {
 544                                 expand_percent_expression(f, fs, *cp, width,
 545                                                           &first, pctx);
 546                         }
 547                 } else {
 548                         for (i=0; cp[i]; i++)
 549                                 if ((cp[i] == '@') || cp[i] == '%')
 550                                         break;
 551                         fprintf(f, "%.*s", i, cp);
 552                         cp += i-1;
 553                 }
 554                 first = 0;
 555         }
 556 }