posix/tst-gnuglob.c

   1 /* Test the GNU extensions in glob which allow the user to provide callbacks
   2    for the filesystem access functions.
   3    Copyright (C) 2001-2002 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, write to the Free
  19    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  20    02111-1307 USA.  */
  21
  22 #include <dirent.h>
  23 #include <errno.h>
  24 #include <error.h>
  25 #include <glob.h>
  26 #include <mcheck.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <sys/stat.h>
  31
  32
  33 // #define DEBUG
  34 #ifdef DEBUG
  35 # define PRINTF(fmt, args...) printf (fmt, ##args)
  36 #else
  37 # define PRINTF(fmt, args...)
  38 #endif
  39
  40
  41 static struct
  42 {
  43   const char *name;
  44   int level;
  45   int type;
  46 } filesystem[] =
  47 {
  48   { ".", 1, DT_DIR },
  49   { "..", 1, DT_DIR },
  50   { "file1lev1", 1, DT_REG },
  51   { "file2lev1", 1, DT_UNKNOWN },
  52   { "dir1lev1", 1, DT_UNKNOWN },
  53     { ".", 2, DT_DIR },
  54     { "..", 2, DT_DIR },
  55     { "file1lev2", 2, DT_REG },
  56     { "dir1lev2", 2, DT_DIR },
  57       { ".", 3, DT_DIR },
  58       { "..", 3, DT_DIR },
  59     { "dir2lev2", 2, DT_DIR },
  60       { ".", 3, DT_DIR },
  61       { "..", 3, DT_DIR },
  62       { ".foo", 3, DT_REG },
  63       { "dir1lev3", 3, DT_DIR },
  64         { ".", 4, DT_DIR },
  65         { "..", 4, DT_DIR },
  66         { "file1lev4", 4, DT_REG },
  67       { "file1lev3", 3, DT_REG },
  68       { "file2lev3", 3, DT_REG },
  69     { "file2lev2", 2, DT_REG },
  70     { "file3lev2", 2, DT_REG },
  71     { "dir3lev2", 2, DT_DIR },
  72       { ".", 3, DT_DIR },
  73       { "..", 3, DT_DIR },
  74       { "file3lev3", 3, DT_REG },
  75       { "file4lev3", 3, DT_REG },
  76   { "dir2lev1", 1, DT_DIR },
  77     { ".", 2, DT_DIR },
  78     { "..", 2, DT_DIR },
  79     { "dir1lev2", 2, DT_UNKNOWN },
  80       { ".", 3, DT_DIR },
  81       { "..", 3, DT_DIR },
  82       { ".foo", 3, DT_REG },
  83       { ".dir", 3, DT_DIR },
  84         { ".", 4, DT_DIR },
  85         { "..", 4, DT_DIR },
  86         { "hidden", 4, DT_REG }
  87 };
  88 #define nfiles (sizeof (filesystem) / sizeof (filesystem[0]))
  89
  90
  91 typedef struct
  92 {
  93   int level;
  94   int idx;
  95   struct dirent d;
  96   char room_for_dirent[NAME_MAX];
  97 } my_DIR;
  98
  99
 100 static long int
 101 find_file (const char *s)
 102 {
 103   int level = 1;
 104   long int idx = 0;
 105
 106   if (strcmp (s, ".") == 0)
 107     return 0;
 108
 109   if (s[0] == '.' && s[1] == '/')
 110     s += 2;
 111
 112   while (*s != '\0')
 113     {
 114       char *endp = strchrnul (s, '/');
 115
 116       PRINTF ("looking for %.*s, level %d\n", (int) (endp - s), s, level);
 117
 118       while (idx < nfiles && filesystem[idx].level >= level)
 119         {
 120           if (filesystem[idx].level == level
 121               && memcmp (s, filesystem[idx].name, endp - s) == 0
 122               && filesystem[idx].name[endp - s] == '\0')
 123             break;
 124           ++idx;
 125         }
 126
 127       if (idx == nfiles || filesystem[idx].level < level)
 128         {
 129           errno = ENOENT;
 130           return -1;
 131         }
 132
 133       if (*endp == '\0')
 134         return idx + 1;
 135
 136       if (filesystem[idx].type != DT_DIR
 137           && (idx + 1 >= nfiles
 138               || filesystem[idx].level >= filesystem[idx + 1].level))
 139         {
 140           errno = ENOTDIR;
 141           return -1;
 142         }
 143
 144       ++idx;
 145
 146       s = endp + 1;
 147       ++level;
 148     }
 149
 150   errno = ENOENT;
 151   return -1;
 152 }
 153
 154
 155 static void *
 156 my_opendir (const char *s)
 157 {
 158   long int idx = find_file (s);
 159   my_DIR *dir;
 160
 161
 162   if (idx == -1)
 163     {
 164       PRINTF ("my_opendir(\"%s\") == NULL\n", s);
 165       return NULL;
 166     }
 167
 168   dir = (my_DIR *) malloc (sizeof (my_DIR));
 169   if (dir == NULL)
 170     error (EXIT_FAILURE, errno, "cannot allocate directory handle");
 171
 172   dir->level = filesystem[idx].level;
 173   dir->idx = idx;
 174
 175   PRINTF ("my_opendir(\"%s\") == { level: %d, idx: %ld }\n",
 176           s, filesystem[idx].level, idx);
 177
 178   return dir;
 179 }
 180
 181
 182 static struct dirent *
 183 my_readdir (void *gdir)
 184 {
 185   my_DIR *dir = gdir;
 186
 187   if (dir->idx == -1)
 188     {
 189       PRINTF ("my_readdir ({ level: %d, idx: %ld }) = NULL\n",
 190               dir->level, (long int) dir->idx);
 191       return NULL;
 192     }
 193
 194   while (dir->idx < nfiles && filesystem[dir->idx].level > dir->level)
 195     ++dir->idx;
 196
 197   if (dir->idx == nfiles || filesystem[dir->idx].level < dir->level)
 198     {
 199       dir->idx = -1;
 200       PRINTF ("my_readdir ({ level: %d, idx: %ld }) = NULL\n",
 201               dir->level, (long int) dir->idx);
 202       return NULL;
 203     }
 204
 205   dir->d.d_ino = dir->idx;
 206
 207 #ifdef _DIRENT_HAVE_D_TYPE
 208   dir->d.d_type = filesystem[dir->idx].type;
 209 #endif
 210
 211   strcpy (dir->d.d_name, filesystem[dir->idx].name);
 212
 213 #ifdef _DIRENT_HAVE_D_TYPE
 214   PRINTF ("my_readdir ({ level: %d, idx: %ld }) = { d_ino: %ld, d_type: %d, d_name: \"%s\" }\n",
 215           dir->level, (long int) dir->idx, dir->d.d_ino, dir->d.d_type,
 216           dir->d.d_name);
 217 #else
 218   PRINTF ("my_readdir ({ level: %d, idx: %ld }) = { d_ino: %ld, d_name: \"%s\" }\n",
 219           dir->level, (long int) dir->idx, dir->d.d_ino,
 220           dir->d.d_name);
 221 #endif
 222
 223   ++dir->idx;
 224
 225   return &dir->d;
 226 }
 227
 228
 229 static void
 230 my_closedir (void *dir)
 231 {
 232   PRINTF ("my_closedir ()\n");
 233   free (dir);
 234 }
 235
 236
 237 /* We use this function for lstat as well since we don't have any.  */
 238 static int
 239 my_stat (const char *name, struct stat *st)
 240 {
 241   long int idx = find_file (name);
 242
 243   if (idx == -1)
 244     {
 245       PRINTF ("my_stat (\"%s\", ...) = -1 (%s)\n", name, strerror (errno));
 246       return -1;
 247     }
 248
 249   memset (st, '\0', sizeof (*st));
 250
 251   if (filesystem[idx].type == DT_UNKNOWN)
 252     st->st_mode = DTTOIF (idx + 1 < nfiles
 253                           && filesystem[idx].level < filesystem[idx + 1].level
 254                           ? DT_DIR : DT_REG) | 0777;
 255   else
 256     st->st_mode = DTTOIF (filesystem[idx].type) | 0777;
 257
 258   PRINTF ("my_stat (\"%s\", { st_mode: %o }) = 0\n", name, st->st_mode);
 259
 260   return 0;
 261 }
 262
 263
 264 static const char *glob_errstring[] =
 265 {
 266   [GLOB_NOSPACE] = "out of memory",
 267   [GLOB_ABORTED] = "read error",
 268   [GLOB_NOMATCH] = "no matches found"
 269 };
 270 #define nglob_errstring (sizeof (glob_errstring) / sizeof (glob_errstring[0]))
 271
 272
 273 static const char *
 274 flagstr (int flags)
 275 {
 276   const char *strs[] =
 277   {
 278     "GLOB_ERR", "GLOB_MARK", "GLOB_NOSORT", "GLOB_DOOFSS", "GLOB_NOCHECK",
 279     "GLOB_APPEND", "GLOB_NOESCAPE", "GLOB_PERIOD", "GLOB_MAGCHAR",
 280     "GLOB_ALTDIRFUNC", "GLOB_BRACE", "GLOB_NOMAGIC", "GLOB_TILDE",
 281     "GLOB_ONLYDIR", "GLOB_TILDECHECK"
 282   };
 283 #define nstrs (sizeof (strs) / sizeof (strs[0]))
 284   static char buf[100];
 285   char *cp = buf;
 286   int cnt;
 287
 288   for (cnt = 0; cnt < nstrs; ++cnt)
 289     if (flags & (1 << cnt))
 290       {
 291         flags &= ~(1 << cnt);
 292         if (cp != buf)
 293           *cp++ = '|';
 294         cp = stpcpy (cp, strs[cnt]);
 295       }
 296
 297   if (flags != 0)
 298     {
 299       if (cp != buf)
 300         *cp++ = '|';
 301       sprintf (cp, "%#x", flags);
 302     }
 303
 304   return buf;
 305 }
 306
 307
 308 static int
 309 test_result (const char *fmt, int flags, glob_t *gl, const char *str[])
 310 {
 311   size_t cnt;
 312   int result = 0;
 313
 314   printf ("results for glob (\"%s\", %s)\n", fmt, flagstr (flags));
 315   for (cnt = 0; cnt < gl->gl_pathc && str[cnt] != NULL; ++cnt)
 316     {
 317       int ok = strcmp (gl->gl_pathv[cnt], str[cnt]) == 0;
 318       const char *errstr = "";
 319
 320       if (! ok)
 321         {
 322           size_t inner;
 323
 324           for (inner = 0; str[inner] != NULL; ++inner)
 325             if (strcmp (gl->gl_pathv[cnt], str[inner]) == 0)
 326               break;
 327
 328           if (str[inner] == NULL)
 329             errstr =  ok ? "" : " *** WRONG";
 330           else
 331             errstr = ok ? "" : " * wrong position";
 332
 333           result = 1;
 334         }
 335
 336       printf ("  %s%s\n", gl->gl_pathv[cnt], errstr);
 337     }
 338   puts ("");
 339
 340   if (str[cnt] != NULL || cnt < gl->gl_pathc)
 341     {
 342       puts ("  *** incorrect number of entries");
 343       result = 1;
 344     }
 345
 346   return result;
 347 }
 348
 349
 350 int
 351 main (void)
 352 {
 353   glob_t gl;
 354   int errval;
 355   int result = 0;
 356   const char *fmt;
 357   int flags;
 358
 359   mtrace ();
 360
 361   memset (&gl, '\0', sizeof (gl));
 362
 363   gl.gl_closedir = my_closedir;
 364   gl.gl_readdir = my_readdir;
 365   gl.gl_opendir = my_opendir;
 366   gl.gl_lstat = my_stat;
 367   gl.gl_stat = my_stat;
 368
 369 #define test(a, b, c...) \
 370   fmt = a;                                                                    \
 371   flags = b;                                                                  \
 372   errval = glob (fmt, flags, NULL, &gl);                                      \
 373   if (errval != 0)                                                            \
 374     {                                                                         \
 375       printf ("glob (\"%s\", %s) failed: %s\n", fmt, flagstr (flags),         \
 376               errval >= 0 && errval < nglob_errstring                         \
 377               ? glob_errstring[errval] : "???");                              \
 378       result = 1;                                                             \
 379     }                                                                         \
 380   else                                                                        \
 381     result |= test_result (fmt, flags, &gl, (const char *[]) { c, NULL })
 382
 383   test ("*/*/*", GLOB_ALTDIRFUNC,
 384         "dir1lev1/dir2lev2/dir1lev3",
 385         "dir1lev1/dir2lev2/file1lev3",
 386         "dir1lev1/dir2lev2/file2lev3",
 387         "dir1lev1/dir3lev2/file3lev3",
 388         "dir1lev1/dir3lev2/file4lev3");
 389
 390   test ("*/*/*", GLOB_ALTDIRFUNC | GLOB_PERIOD,
 391         "dir1lev1/dir1lev2/.",
 392         "dir1lev1/dir1lev2/..",
 393         "dir1lev1/dir2lev2/.",
 394         "dir1lev1/dir2lev2/..",
 395         "dir1lev1/dir2lev2/.foo",
 396         "dir1lev1/dir2lev2/dir1lev3",
 397         "dir1lev1/dir2lev2/file1lev3",
 398         "dir1lev1/dir2lev2/file2lev3",
 399         "dir1lev1/dir3lev2/.",
 400         "dir1lev1/dir3lev2/..",
 401         "dir1lev1/dir3lev2/file3lev3",
 402         "dir1lev1/dir3lev2/file4lev3",
 403         "dir2lev1/dir1lev2/.",
 404         "dir2lev1/dir1lev2/..",
 405         "dir2lev1/dir1lev2/.dir",
 406         "dir2lev1/dir1lev2/.foo");
 407
 408   test ("*/*/.*", GLOB_ALTDIRFUNC,
 409         "dir1lev1/dir1lev2/.",
 410         "dir1lev1/dir1lev2/..",
 411         "dir1lev1/dir2lev2/.",
 412         "dir1lev1/dir2lev2/..",
 413         "dir1lev1/dir2lev2/.foo",
 414         "dir1lev1/dir3lev2/.",
 415         "dir1lev1/dir3lev2/..",
 416         "dir2lev1/dir1lev2/.",
 417         "dir2lev1/dir1lev2/..",
 418         "dir2lev1/dir1lev2/.dir",
 419         "dir2lev1/dir1lev2/.foo");
 420
 421   test ("*1*/*2*/.*", GLOB_ALTDIRFUNC,
 422         "dir1lev1/dir1lev2/.",
 423         "dir1lev1/dir1lev2/..",
 424         "dir1lev1/dir2lev2/.",
 425         "dir1lev1/dir2lev2/..",
 426         "dir1lev1/dir2lev2/.foo",
 427         "dir1lev1/dir3lev2/.",
 428         "dir1lev1/dir3lev2/..",
 429         "dir2lev1/dir1lev2/.",
 430         "dir2lev1/dir1lev2/..",
 431         "dir2lev1/dir1lev2/.dir",
 432         "dir2lev1/dir1lev2/.foo");
 433
 434   test ("*1*/*1*/.*", GLOB_ALTDIRFUNC,
 435         "dir1lev1/dir1lev2/.",
 436         "dir1lev1/dir1lev2/..",
 437         "dir2lev1/dir1lev2/.",
 438         "dir2lev1/dir1lev2/..",
 439         "dir2lev1/dir1lev2/.dir",
 440         "dir2lev1/dir1lev2/.foo");
 441
 442   globfree (&gl);
 443
 444   return result;
 445 }