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[tools/e2fsprogs.git] / 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_dir_acl
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  *      %S      backup superblock
52  *      %X      <num> hexadecimal format
53  *
54  * The following '@' expansions are supported:
55  *
56  *      @a      extended attribute
57  *      @A      error allocating
58  *      @b      block
59  *      @B      bitmap
60  *      @c      compress
61  *      @C      conflicts with some other fs block
62  *      @D      deleted
63  *      @d      directory
64  *      @e      entry
65  *      @E      Entry '%Dn' in %p (%i)
66  *      @f      filesystem
67  *      @F      for @i %i (%Q) is
68  *      @g      group
69  *      @h      HTREE directory inode
70  *      @i      inode
71  *      @I      illegal
72  *      @j      journal
73  *      @l      lost+found
74  *      @L      is a link
75  *      @m      multiply-claimed
76  *      @n      invalid
77  *      @o      orphaned
78  *      @p      problem in
79  *      @q      quota
80  *      @r      root inode
81  *      @s      should be
82  *      @S      superblock
83  *      @u      unattached
84  *      @v      device
85  *      @x      extent
86  *      @z      zero-length
87  */
88
89 #include "config.h"
90 #include <stdlib.h>
91 #include <unistd.h>
92 #include <string.h>
93 #include <ctype.h>
94 #include <termios.h>
95
96 #include "e2fsck.h"
97
98 #include "problem.h"
99
100 #ifdef __GNUC__
101 #define _INLINE_ __inline__
102 #else
103 #define _INLINE_
104 #endif
105
106 /*
107  * This structure defines the abbreviations used by the text strings
108  * below.  The first character in the string is the index letter.  An
109  * abbreviation of the form '@<i>' is expanded by looking up the index
110  * letter <i> in the table below.
111  */
112 static const char *abbrevs[] = {
113         N_("aextended attribute"),
114         N_("Aerror allocating"),
115         N_("bblock"),
116         N_("Bbitmap"),
117         N_("ccompress"),
118         N_("Cconflicts with some other fs @b"),
119         N_("iinode"),
120         N_("Iillegal"),
121         N_("jjournal"),
122         N_("Ddeleted"),
123         N_("ddirectory"),
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_("llost+found"),
131         N_("Lis a link"),
132         N_("mmultiply-claimed"),
133         N_("ninvalid"),
134         N_("oorphaned"),
135         N_("pproblem in"),
136         N_("qquota"),
137         N_("rroot @i"),
138         N_("sshould be"),
139         N_("Ssuper@b"),
140         N_("uunattached"),
141         N_("vdevice"),
142         N_("xextent"),
143         N_("zzero-length"),
144         "@@",
145         0
146         };
147
148 /*
149  * Give more user friendly names to the "special" inodes.
150  */
151 #define num_special_inodes      11
152 static const char *special_inode_name[] =
153 {
154         N_("<The NULL inode>"),                 /* 0 */
155         N_("<The bad blocks inode>"),           /* 1 */
156         "/",                                    /* 2 */
157         N_("<The user quota inode>"),           /* 3 */
158         N_("<The group quota inode>"),          /* 4 */
159         N_("<The boot loader inode>"),          /* 5 */
160         N_("<The undelete directory inode>"),   /* 6 */
161         N_("<The group descriptor inode>"),     /* 7 */
162         N_("<The journal inode>"),              /* 8 */
163         N_("<Reserved inode 9>"),               /* 9 */
164         N_("<Reserved inode 10>"),              /* 10 */
165 };
166
167 /*
168  * This function does "safe" printing.  It will convert non-printable
169  * ASCII characters using '^' and M- notation.
170  */
171 static void safe_print(const char *cp, int len)
172 {
173         unsigned char   ch;
174
175         if (len < 0)
176                 len = strlen(cp);
177
178         while (len--) {
179                 ch = *cp++;
180                 if (ch > 128) {
181                         fputs("M-", stdout);
182                         ch -= 128;
183                 }
184                 if ((ch < 32) || (ch == 0x7f)) {
185                         fputc('^', stdout);
186                         ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */
187                 }
188                 fputc(ch, stdout);
189         }
190 }
191
192
193 /*
194  * This function prints a pathname, using the ext2fs_get_pathname
195  * function
196  */
197 static void print_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino)
198 {
199         errcode_t       retval;
200         char            *path;
201
202         if (!dir && (ino < num_special_inodes)) {
203                 fputs(_(special_inode_name[ino]), stdout);
204                 return;
205         }
206
207         if (fs)
208                 retval = ext2fs_get_pathname(fs, dir, ino, &path);
209         if (!fs || retval)
210                 fputs("???", stdout);
211         else {
212                 safe_print(path, -1);
213                 ext2fs_free_mem(&path);
214         }
215 }
216
217 static void print_time(time_t t)
218 {
219         const char *            time_str;
220         static int              do_gmt = -1;
221
222 #ifdef __dietlibc__
223                 /* The diet libc doesn't respect the TZ environemnt variable */
224                 if (do_gmt == -1) {
225                         time_str = getenv("TZ");
226                         if (!time_str)
227                                 time_str = "";
228                         do_gmt = !strcmp(time_str, "GMT0");
229                 }
230 #endif
231                 time_str = asctime((do_gmt > 0) ? gmtime(&t) : localtime(&t));
232                 printf("%.24s", time_str);
233 }
234
235 /*
236  * This function handles the '@' expansion.  We allow recursive
237  * expansion; an @ expression can contain further '@' and '%'
238  * expressions.
239  */
240 static _INLINE_ void expand_at_expression(e2fsck_t ctx, char ch,
241                                           struct problem_context *pctx,
242                                           int *first, int recurse)
243 {
244         const char **cpp, *str;
245
246         /* Search for the abbreviation */
247         for (cpp = abbrevs; *cpp; cpp++) {
248                 if (ch == *cpp[0])
249                         break;
250         }
251         if (*cpp && recurse < 10) {
252                 str = _(*cpp) + 1;
253                 if (*first && islower(*str)) {
254                         *first = 0;
255                         fputc(toupper(*str++), stdout);
256                 }
257                 print_e2fsck_message(ctx, str, pctx, *first, recurse+1);
258         } else
259                 printf("@%c", ch);
260 }
261
262 /*
263  * This function expands '%IX' expressions
264  */
265 static _INLINE_ void expand_inode_expression(ext2_filsys fs, char ch,
266                                              struct problem_context *ctx)
267 {
268         struct ext2_inode       *inode;
269         struct ext2_inode_large *large_inode;
270
271         if (!ctx || !ctx->inode)
272                 goto no_inode;
273
274         inode = ctx->inode;
275         large_inode = (struct ext2_inode_large *) inode;
276
277         switch (ch) {
278         case 's':
279                 if (LINUX_S_ISDIR(inode->i_mode))
280                         printf("%u", inode->i_size);
281                 else {
282 #ifdef EXT2_NO_64_TYPE
283                         if (inode->i_size_high)
284                                 printf("0x%x%08x", inode->i_size_high,
285                                        inode->i_size);
286                         else
287                                 printf("%u", inode->i_size);
288 #else
289                         printf("%llu", EXT2_I_SIZE(inode));
290 #endif
291                 }
292                 break;
293         case 'S':
294                 printf("%u", large_inode->i_extra_isize);
295                 break;
296         case 'b':
297                 if (fs->super->s_feature_ro_compat &
298                     EXT4_FEATURE_RO_COMPAT_HUGE_FILE) 
299                         printf("%llu", inode->i_blocks +
300                                (((long long) inode->osd2.linux2.l_i_blocks_hi)
301                                 << 32));
302                 else
303                         printf("%u", inode->i_blocks);
304                 break;
305         case 'l':
306                 printf("%d", inode->i_links_count);
307                 break;
308         case 'm':
309                 printf("0%o", inode->i_mode);
310                 break;
311         case 'M':
312                 print_time(inode->i_mtime);
313                 break;
314         case 'F':
315                 printf("%u", inode->i_faddr);
316                 break;
317         case 'f':
318                 printf("%llu", ext2fs_file_acl_block(inode));
319                 break;
320         case 'd':
321                 printf("%u", (LINUX_S_ISDIR(inode->i_mode) ?
322                               inode->i_dir_acl : 0));
323                 break;
324         case 'u':
325                 printf("%d", inode_uid(*inode));
326                 break;
327         case 'g':
328                 printf("%d", inode_gid(*inode));
329                 break;
330         case 't':
331                 if (LINUX_S_ISREG(inode->i_mode))
332                         printf(_("regular file"));
333                 else if (LINUX_S_ISDIR(inode->i_mode))
334                         printf(_("directory"));
335                 else if (LINUX_S_ISCHR(inode->i_mode))
336                         printf(_("character device"));
337                 else if (LINUX_S_ISBLK(inode->i_mode))
338                         printf(_("block device"));
339                 else if (LINUX_S_ISFIFO(inode->i_mode))
340                         printf(_("named pipe"));
341                 else if (LINUX_S_ISLNK(inode->i_mode))
342                         printf(_("symbolic link"));
343                 else if (LINUX_S_ISSOCK(inode->i_mode))
344                         printf(_("socket"));
345                 else
346                         printf(_("unknown file type with mode 0%o"),
347                                inode->i_mode);
348                 break;
349         default:
350         no_inode:
351                 printf("%%I%c", ch);
352                 break;
353         }
354 }
355
356 /*
357  * This function expands '%dX' expressions
358  */
359 static _INLINE_ void expand_dirent_expression(ext2_filsys fs, char ch,
360                                               struct problem_context *ctx)
361 {
362         struct ext2_dir_entry   *dirent;
363         unsigned int rec_len;
364         int     len;
365
366         if (!ctx || !ctx->dirent)
367                 goto no_dirent;
368
369         dirent = ctx->dirent;
370
371         switch (ch) {
372         case 'i':
373                 printf("%u", dirent->inode);
374                 break;
375         case 'n':
376                 len = dirent->name_len & 0xFF;
377                 if ((ext2fs_get_rec_len(fs, dirent, &rec_len) == 0) &&
378                     (len > rec_len))
379                         len = rec_len;
380                 safe_print(dirent->name, len);
381                 break;
382         case 'r':
383                 (void) ext2fs_get_rec_len(fs, dirent, &rec_len);
384                 printf("%u", rec_len);
385                 break;
386         case 'l':
387                 printf("%u", dirent->name_len & 0xFF);
388                 break;
389         case 't':
390                 printf("%u", dirent->name_len >> 8);
391                 break;
392         default:
393         no_dirent:
394                 printf("%%D%c", ch);
395                 break;
396         }
397 }
398
399 static _INLINE_ void expand_percent_expression(ext2_filsys fs, char ch,
400                                                int *first,
401                                                struct problem_context *ctx)
402 {
403         e2fsck_t e2fsck_ctx = fs ? (e2fsck_t) fs->priv_data : NULL;
404         const char *m;
405
406         if (!ctx)
407                 goto no_context;
408
409         switch (ch) {
410         case '%':
411                 fputc('%', stdout);
412                 break;
413         case 'b':
414 #ifdef EXT2_NO_64_TYPE
415                 printf("%u", (unsigned long) ctx->blk);
416 #else
417                 printf("%llu", (unsigned long long) ctx->blk);
418 #endif
419                 break;
420         case 'B':
421                 if (ctx->blkcount == BLOCK_COUNT_IND)
422                         m = _("indirect block");
423                 else if (ctx->blkcount == BLOCK_COUNT_DIND)
424                         m = _("double indirect block");
425                 else if (ctx->blkcount == BLOCK_COUNT_TIND)
426                         m = _("triple indirect block");
427                 else if (ctx->blkcount == BLOCK_COUNT_TRANSLATOR)
428                         m = _("translator block");
429                 else
430                         m = _("block #");
431                 if (*first && islower(m[0]))
432                         fputc(toupper(*m++), stdout);
433                 fputs(m, stdout);
434                 if (ctx->blkcount >= 0) {
435 #ifdef EXT2_NO_64_TYPE
436                         printf("%d", ctx->blkcount);
437 #else
438                         printf("%lld", (long long) ctx->blkcount);
439 #endif
440                 }
441                 break;
442         case 'c':
443 #ifdef EXT2_NO_64_TYPE
444                 printf("%u", (unsigned long) ctx->blk2);
445 #else
446                 printf("%llu", (unsigned long long) ctx->blk2);
447 #endif
448                 break;
449         case 'd':
450                 printf("%u", ctx->dir);
451                 break;
452         case 'g':
453                 printf("%d", ctx->group);
454                 break;
455         case 'i':
456                 printf("%u", ctx->ino);
457                 break;
458         case 'j':
459                 printf("%u", ctx->ino2);
460                 break;
461         case 'm':
462                 printf("%s", error_message(ctx->errcode));
463                 break;
464         case 'N':
465 #ifdef EXT2_NO_64_TYPE
466                 printf("%u", ctx->num);
467 #else
468                 printf("%llu", (long long)ctx->num);
469 #endif
470                 break;
471         case 'p':
472                 print_pathname(fs, ctx->ino, 0);
473                 break;
474         case 'P':
475                 print_pathname(fs, ctx->ino2,
476                                ctx->dirent ? ctx->dirent->inode : 0);
477                 break;
478         case 'q':
479                 print_pathname(fs, ctx->dir, 0);
480                 break;
481         case 'Q':
482                 print_pathname(fs, ctx->dir, ctx->ino);
483                 break;
484         case 'r':
485 #ifdef EXT2_NO_64_TYPE
486                 printf("%d", ctx->blkcount);
487 #else
488                 printf("%lld", (long long) ctx->blkcount);
489 #endif
490                 break;
491         case 'S':
492                 printf("%u", get_backup_sb(NULL, fs, NULL, NULL));
493                 break;
494         case 's':
495                 printf("%s", ctx->str ? ctx->str : "NULL");
496                 break;
497         case 't':
498                 print_time((time_t) ctx->num);
499                 break;
500         case 'T':
501                 print_time(e2fsck_ctx ? e2fsck_ctx->now : time(0));
502                 break;
503         case 'X':
504 #ifdef EXT2_NO_64_TYPE
505                 printf("0x%x", ctx->num);
506 #else
507                 printf("0x%llx", (long long)ctx->num);
508 #endif
509                 break;
510         default:
511         no_context:
512                 printf("%%%c", ch);
513                 break;
514         }
515 }
516
517 void print_e2fsck_message(e2fsck_t ctx, const char *msg,
518                           struct problem_context *pctx, int first,
519                           int recurse)
520 {
521         ext2_filsys fs = ctx->fs;
522         const char *    cp;
523         int             i;
524
525         e2fsck_clear_progbar(ctx);
526         for (cp = msg; *cp; cp++) {
527                 if (cp[0] == '@') {
528                         cp++;
529                         expand_at_expression(ctx, *cp, pctx, &first, recurse);
530                 } else if (cp[0] == '%' && cp[1] == 'I') {
531                         cp += 2;
532                         expand_inode_expression(fs, *cp, pctx);
533                 } else if (cp[0] == '%' && cp[1] == 'D') {
534                         cp += 2;
535                         expand_dirent_expression(fs, *cp, pctx);
536                 } else if ((cp[0] == '%')) {
537                         cp++;
538                         expand_percent_expression(fs, *cp, &first, pctx);
539                 } else {
540                         for (i=0; cp[i]; i++)
541                                 if ((cp[i] == '@') || cp[i] == '%')
542                                         break;
543                         printf("%.*s", i, cp);
544                         cp += i-1;
545                 }
546                 first = 0;
547         }
548 }