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e2fsck: Fix and enhance superblock dates in future problem reports
[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>              integer
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  *      %s      <str>                   miscellaneous string
50  *      %S      backup superblock
51  *      %X      <num> hexadecimal format
52  *
53  * The following '@' expansions are supported:
54  *
55  *      @a      extended attribute
56  *      @A      error allocating
57  *      @b      block
58  *      @B      bitmap
59  *      @c      compress
60  *      @C      conflicts with some other fs block
61  *      @D      deleted
62  *      @d      directory
63  *      @e      entry
64  *      @E      Entry '%Dn' in %p (%i)
65  *      @f      filesystem
66  *      @F      for @i %i (%Q) is
67  *      @g      group
68  *      @h      HTREE directory inode
69  *      @i      inode
70  *      @I      illegal
71  *      @j      journal
72  *      @l      lost+found
73  *      @L      is a link
74  *      @m      multiply-claimed
75  *      @n      invalid
76  *      @o      orphaned
77  *      @p      problem in
78  *      @r      root inode
79  *      @s      should be
80  *      @S      superblock
81  *      @u      unattached
82  *      @v      device
83  *      @x      extent
84  *      @z      zero-length
85  */
86
87 #include <stdlib.h>
88 #include <unistd.h>
89 #include <string.h>
90 #include <ctype.h>
91 #include <termios.h>
92
93 #include "e2fsck.h"
94
95 #include "problem.h"
96
97 #ifdef __GNUC__
98 #define _INLINE_ __inline__
99 #else
100 #define _INLINE_
101 #endif
102
103 /*
104  * This structure defines the abbreviations used by the text strings
105  * below.  The first character in the string is the index letter.  An
106  * abbreviation of the form '@<i>' is expanded by looking up the index
107  * letter <i> in the table below.
108  */
109 static const char *abbrevs[] = {
110         N_("aextended attribute"),
111         N_("Aerror allocating"),
112         N_("bblock"),
113         N_("Bbitmap"),
114         N_("ccompress"),
115         N_("Cconflicts with some other fs @b"),
116         N_("iinode"),
117         N_("Iillegal"),
118         N_("jjournal"),
119         N_("Ddeleted"),
120         N_("ddirectory"),
121         N_("eentry"),
122         N_("E@e '%Dn' in %p (%i)"),
123         N_("ffilesystem"),
124         N_("Ffor @i %i (%Q) is"),
125         N_("ggroup"),
126         N_("hHTREE @d @i"),
127         N_("llost+found"),
128         N_("Lis a link"),
129         N_("mmultiply-claimed"),
130         N_("ninvalid"),
131         N_("oorphaned"),
132         N_("pproblem in"),
133         N_("rroot @i"),
134         N_("sshould be"),
135         N_("Ssuper@b"),
136         N_("uunattached"),
137         N_("vdevice"),
138         N_("xextent"),
139         N_("zzero-length"),
140         "@@",
141         0
142         };
143
144 /*
145  * Give more user friendly names to the "special" inodes.
146  */
147 #define num_special_inodes      11
148 static const char *special_inode_name[] =
149 {
150         N_("<The NULL inode>"),                 /* 0 */
151         N_("<The bad blocks inode>"),           /* 1 */
152         "/",                                    /* 2 */
153         N_("<The ACL index inode>"),            /* 3 */
154         N_("<The ACL data inode>"),             /* 4 */
155         N_("<The boot loader inode>"),          /* 5 */
156         N_("<The undelete directory inode>"),   /* 6 */
157         N_("<The group descriptor inode>"),     /* 7 */
158         N_("<The journal inode>"),              /* 8 */
159         N_("<Reserved inode 9>"),               /* 9 */
160         N_("<Reserved inode 10>"),              /* 10 */
161 };
162
163 /*
164  * This function does "safe" printing.  It will convert non-printable
165  * ASCII characters using '^' and M- notation.
166  */
167 static void safe_print(const char *cp, int len)
168 {
169         unsigned char   ch;
170
171         if (len < 0)
172                 len = strlen(cp);
173
174         while (len--) {
175                 ch = *cp++;
176                 if (ch > 128) {
177                         fputs("M-", stdout);
178                         ch -= 128;
179                 }
180                 if ((ch < 32) || (ch == 0x7f)) {
181                         fputc('^', stdout);
182                         ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */
183                 }
184                 fputc(ch, stdout);
185         }
186 }
187
188
189 /*
190  * This function prints a pathname, using the ext2fs_get_pathname
191  * function
192  */
193 static void print_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino)
194 {
195         errcode_t       retval;
196         char            *path;
197
198         if (!dir && (ino < num_special_inodes)) {
199                 fputs(_(special_inode_name[ino]), stdout);
200                 return;
201         }
202
203         retval = ext2fs_get_pathname(fs, dir, ino, &path);
204         if (retval)
205                 fputs("???", stdout);
206         else {
207                 safe_print(path, -1);
208                 ext2fs_free_mem(&path);
209         }
210 }
211
212 static void print_time(time_t t)
213 {
214         const char *            time_str;
215         static int              do_gmt = -1;
216
217 #ifdef __dietlibc__
218                 /* The diet libc doesn't respect the TZ environemnt variable */
219                 if (do_gmt == -1) {
220                         time_str = getenv("TZ");
221                         if (!time_str)
222                                 time_str = "";
223                         do_gmt = !strcmp(time_str, "GMT0");
224                 }
225 #endif
226                 time_str = asctime((do_gmt > 0) ? gmtime(&t) : localtime(&t));
227                 printf("%.24s", time_str);
228 }
229
230 /*
231  * This function handles the '@' expansion.  We allow recursive
232  * expansion; an @ expression can contain further '@' and '%'
233  * expressions.
234  */
235 static _INLINE_ void expand_at_expression(e2fsck_t ctx, char ch,
236                                           struct problem_context *pctx,
237                                           int *first, int recurse)
238 {
239         const char **cpp, *str;
240
241         /* Search for the abbreviation */
242         for (cpp = abbrevs; *cpp; cpp++) {
243                 if (ch == *cpp[0])
244                         break;
245         }
246         if (*cpp && recurse < 10) {
247                 str = _(*cpp) + 1;
248                 if (*first && islower(*str)) {
249                         *first = 0;
250                         fputc(toupper(*str++), stdout);
251                 }
252                 print_e2fsck_message(ctx, str, pctx, *first, recurse+1);
253         } else
254                 printf("@%c", ch);
255 }
256
257 /*
258  * This function expands '%IX' expressions
259  */
260 static _INLINE_ void expand_inode_expression(char ch,
261                                              struct problem_context *ctx)
262 {
263         struct ext2_inode       *inode;
264         struct ext2_inode_large *large_inode;
265         time_t                  t;
266
267         if (!ctx || !ctx->inode)
268                 goto no_inode;
269
270         inode = ctx->inode;
271         large_inode = (struct ext2_inode_large *) inode;
272
273         switch (ch) {
274         case 's':
275                 if (LINUX_S_ISDIR(inode->i_mode))
276                         printf("%u", inode->i_size);
277                 else {
278 #ifdef EXT2_NO_64_TYPE
279                         if (inode->i_size_high)
280                                 printf("0x%x%08x", inode->i_size_high,
281                                        inode->i_size);
282                         else
283                                 printf("%u", inode->i_size);
284 #else
285                         printf("%llu", inode->i_size |
286                                        ((long long)inode->i_size_high << 32));
287 #endif
288                 }
289                 break;
290         case 'S':
291                 printf("%u", large_inode->i_extra_isize);
292                 break;
293         case 'b':
294                 if (inode->i_flags & EXT4_HUGE_FILE_FL)
295                         printf("%llu", inode->i_blocks +
296                                (((long long) inode->osd2.linux2.l_i_blocks_hi)
297                                 << 32));
298                 else
299                         printf("%u", inode->i_blocks);
300                 break;
301         case 'l':
302                 printf("%d", inode->i_links_count);
303                 break;
304         case 'm':
305                 printf("0%o", inode->i_mode);
306                 break;
307         case 'M':
308                 print_time(inode->i_mtime);
309                 break;
310         case 'F':
311                 printf("%u", inode->i_faddr);
312                 break;
313         case 'f':
314                 printf("%u", inode->i_file_acl);
315                 break;
316         case 'd':
317                 printf("%u", (LINUX_S_ISDIR(inode->i_mode) ?
318                               inode->i_dir_acl : 0));
319                 break;
320         case 'u':
321                 printf("%d", inode_uid(*inode));
322                 break;
323         case 'g':
324                 printf("%d", inode_gid(*inode));
325                 break;
326         case 't':
327                 if (LINUX_S_ISREG(inode->i_mode))
328                         printf(_("regular file"));
329                 else if (LINUX_S_ISDIR(inode->i_mode))
330                         printf(_("directory"));
331                 else if (LINUX_S_ISCHR(inode->i_mode))
332                         printf(_("character device"));
333                 else if (LINUX_S_ISBLK(inode->i_mode))
334                         printf(_("block device"));
335                 else if (LINUX_S_ISFIFO(inode->i_mode))
336                         printf(_("named pipe"));
337                 else if (LINUX_S_ISLNK(inode->i_mode))
338                         printf(_("symbolic link"));
339                 else if (LINUX_S_ISSOCK(inode->i_mode))
340                         printf(_("socket"));
341                 else
342                         printf(_("unknown file type with mode 0%o"),
343                                inode->i_mode);
344                 break;
345         default:
346         no_inode:
347                 printf("%%I%c", ch);
348                 break;
349         }
350 }
351
352 /*
353  * This function expands '%dX' expressions
354  */
355 static _INLINE_ void expand_dirent_expression(ext2_filsys fs, char ch,
356                                               struct problem_context *ctx)
357 {
358         struct ext2_dir_entry   *dirent;
359         unsigned int rec_len;
360         int     len;
361
362         if (!ctx || !ctx->dirent)
363                 goto no_dirent;
364
365         dirent = ctx->dirent;
366
367         switch (ch) {
368         case 'i':
369                 printf("%u", dirent->inode);
370                 break;
371         case 'n':
372                 len = dirent->name_len & 0xFF;
373                 if (len > EXT2_NAME_LEN)
374                         len = EXT2_NAME_LEN;
375                 if ((ext2fs_get_rec_len(fs, dirent, &rec_len) == 0) &&
376                     (len > rec_len))
377                         len = rec_len;
378                 safe_print(dirent->name, len);
379                 break;
380         case 'r':
381                 (void) ext2fs_get_rec_len(fs, dirent, &rec_len);
382                 printf("%u", rec_len);
383                 break;
384         case 'l':
385                 printf("%u", dirent->name_len & 0xFF);
386                 break;
387         case 't':
388                 printf("%u", dirent->name_len >> 8);
389                 break;
390         default:
391         no_dirent:
392                 printf("%%D%c", ch);
393                 break;
394         }
395 }
396
397 static _INLINE_ void expand_percent_expression(ext2_filsys fs, char ch,
398                                                struct problem_context *ctx)
399 {
400         e2fsck_t e2fsck_ctx = fs ? (e2fsck_t) fs->priv_data : NULL;
401
402         if (!ctx)
403                 goto no_context;
404
405         switch (ch) {
406         case '%':
407                 fputc('%', stdout);
408                 break;
409         case 'b':
410 #ifdef EXT2_NO_64_TYPE
411                 printf("%u", (unsigned long) ctx->blk);
412 #else
413                 printf("%llu", (unsigned long long) ctx->blk);
414 #endif
415                 break;
416         case 'B':
417 #ifdef EXT2_NO_64_TYPE
418                 printf("%d", ctx->blkcount);
419 #else
420                 printf("%lld", (long long)ctx->blkcount);
421 #endif
422                 break;
423         case 'c':
424 #ifdef EXT2_NO_64_TYPE
425                 printf("%u", (unsigned long) ctx->blk2);
426 #else
427                 printf("%llu", (unsigned long long) ctx->blk2);
428 #endif
429                 break;
430         case 'd':
431                 printf("%u", ctx->dir);
432                 break;
433         case 'g':
434                 printf("%d", ctx->group);
435                 break;
436         case 'i':
437                 printf("%u", ctx->ino);
438                 break;
439         case 'j':
440                 printf("%u", ctx->ino2);
441                 break;
442         case 'm':
443                 printf("%s", error_message(ctx->errcode));
444                 break;
445         case 'N':
446 #ifdef EXT2_NO_64_TYPE
447                 printf("%u", ctx->num);
448 #else
449                 printf("%llu", (long long)ctx->num);
450 #endif
451                 break;
452         case 'p':
453                 print_pathname(fs, ctx->ino, 0);
454                 break;
455         case 'P':
456                 print_pathname(fs, ctx->ino2,
457                                ctx->dirent ? ctx->dirent->inode : 0);
458                 break;
459         case 'q':
460                 print_pathname(fs, ctx->dir, 0);
461                 break;
462         case 'Q':
463                 print_pathname(fs, ctx->dir, ctx->ino);
464                 break;
465         case 'S':
466                 printf("%u", get_backup_sb(NULL, fs, NULL, NULL));
467                 break;
468         case 's':
469                 printf("%s", ctx->str ? ctx->str : "NULL");
470                 break;
471         case 't':
472                 print_time((time_t) ctx->num);
473                 break;
474         case 'T':
475                 print_time(e2fsck_ctx ? e2fsck_ctx->now : time(0));
476                 break;
477         case 'X':
478 #ifdef EXT2_NO_64_TYPE
479                 printf("0x%x", ctx->num);
480 #else
481                 printf("0x%llx", (long long)ctx->num);
482 #endif
483                 break;
484         default:
485         no_context:
486                 printf("%%%c", ch);
487                 break;
488         }
489 }
490
491 void print_e2fsck_message(e2fsck_t ctx, const char *msg,
492                           struct problem_context *pctx, int first,
493                           int recurse)
494 {
495         ext2_filsys fs = ctx->fs;
496         const char *    cp;
497         int             i;
498
499         e2fsck_clear_progbar(ctx);
500         for (cp = msg; *cp; cp++) {
501                 if (cp[0] == '@') {
502                         cp++;
503                         expand_at_expression(ctx, *cp, pctx, &first, recurse);
504                 } else if (cp[0] == '%' && cp[1] == 'I') {
505                         cp += 2;
506                         expand_inode_expression(*cp, pctx);
507                 } else if (cp[0] == '%' && cp[1] == 'D') {
508                         cp += 2;
509                         expand_dirent_expression(fs, *cp, pctx);
510                 } else if ((cp[0] == '%')) {
511                         cp++;
512                         expand_percent_expression(fs, *cp, pctx);
513                 } else {
514                         for (i=0; cp[i]; i++)
515                                 if ((cp[i] == '@') || cp[i] == '%')
516                                         break;
517                         printf("%.*s", i, cp);
518                         cp += i-1;
519                 }
520                 first = 0;
521         }
522 }