test/test28.c

   1  /* test28: mkdir() rmdir()     Author: Jan-Mark Wams (jms@cs.vu.nl) */
   2
   3 /*
   4 ** Not tested readonly file systems (EROFS.)
   5 ** Not tested fs full (ENOSPC.)
   6 ** Not really tested EBUSY.
   7 ** Not tested unlinking busy directories.
   8 */
   9
  10 #include <sys/types.h>
  11 #include <sys/stat.h>
  12 #include <sys/wait.h>
  13 #include <string.h>
  14 #include <stdlib.h>
  15 #include <unistd.h>
  16 #include <fcntl.h>
  17 #include <errno.h>
  18 #include <dirent.h>
  19 #include <limits.h>
  20 #include <time.h>
  21 #include <stdio.h>
  22
  23 #define MAX_ERROR       4
  24 #define ITERATIONS      2
  25
  26 #define DIRENT0         ((struct dirent *) NULL)
  27
  28 #define System(cmd)     if (system(cmd) != 0) printf("``%s'' failed\n", cmd)
  29 #define Chdir(dir)      if (chdir(dir) != 0) printf("Can't goto %s\n", dir)
  30
  31 int errct = 0;
  32 int subtest = 1;
  33 int superuser;
  34 char MaxName[NAME_MAX + 1];     /* Name of maximum length */
  35 char MaxPath[PATH_MAX];
  36 char ToLongName[NAME_MAX + 2];  /* Name of maximum +1 length */
  37 char ToLongPath[PATH_MAX + 1];
  38
  39 _PROTOTYPE(void main, (int argc, char *argv[]));
  40 _PROTOTYPE(void test28a, (void));
  41 _PROTOTYPE(void test28c, (void));
  42 _PROTOTYPE(void test28b, (void));
  43 _PROTOTYPE(void makelongnames, (void));
  44 _PROTOTYPE(void e, (int n));
  45 _PROTOTYPE(void quit, (void));
  46
  47 void main(argc, argv)
  48 int argc;
  49 char *argv[];
  50 {
  51   int i, m = 0xFFFF;
  52
  53   sync();
  54   if (argc == 2) m = atoi(argv[1]);
  55   printf("Test 28 ");
  56   fflush(stdout);
  57   superuser = (getuid() == 0);
  58   makelongnames();
  59   system("chmod 777 DIR_28/* DIR_28/*/* > /dev/null 2>&1");
  60   System("rm -rf DIR_28; mkdir DIR_28");
  61   Chdir("DIR_28");
  62   umask(0000);                  /* no umask */
  63
  64   for (i = 0; i < ITERATIONS; i++) {
  65         if (m & 0001) test28a();
  66         if (m & 0002) test28b();
  67         if (m & 0004) test28c();
  68   }
  69   quit();
  70 }
  71
  72 void test28a()
  73 {
  74   int mode;                     /* used in for loop */
  75   struct stat st;
  76   time_t time1, time2;
  77   DIR *dirp;
  78   struct dirent *dep;
  79   int dot = 0, dotdot = 0;
  80
  81   subtest = 1;
  82
  83   System("rm -rf foo /tmp/foo");/* clean up junk */
  84
  85   /* Check relative path names */
  86   if (mkdir("./foo", 0777) != 0) e(1);  /* make a dir foo */
  87   if (mkdir("./foo/bar", 0777) != 0) e(2);      /* make foo/bar */
  88   if (rmdir("foo/bar") != 0) e(3);      /* delete bar */
  89   if (mkdir("foo/../foo/bar", 0777) != 0) e(4); /* make bar again */
  90   if (rmdir("./foo/bar") != 0) e(5);    /* and remove again */
  91
  92   /* Foo should be empty (ie. contain only "." and ".." */
  93   if ((dirp = opendir("foo")) == (DIR *) NULL) e(6);    /* open foo */
  94   if ((dep = readdir(dirp)) == DIRENT0) e(7);   /* get first entry */
  95   if (strcmp(dep->d_name, ".") == 0) dot += 1;  /* record what it is */
  96   if (strcmp(dep->d_name, "..") == 0) dotdot += 1;
  97   if ((dep = readdir(dirp)) == DIRENT0) e(8);   /* get second entry */
  98   if (strcmp(dep->d_name, ".") == 0) dot += 1;  /* record again */
  99   if (strcmp(dep->d_name, "..") == 0) dotdot += 1;
 100   if ((dep = readdir(dirp)) != DIRENT0) e(9);   /* no 3d entry */
 101   if (dot == 1 && dotdot != 1) e(10);   /* only . and .. */
 102   if (closedir(dirp) != 0) e(11);       /* close foo */
 103   if (rmdir("./foo") != 0) e(12);       /* remove dir foo */
 104
 105   /* Check absolute path names */
 106   if (mkdir("/tmp/foo", 0777) != 0) e(13);
 107   if (mkdir("/tmp/foo/bar", 0777) != 0) e(14);
 108   if (rmdir("/tmp/foo/bar") != 0) e(15);        /* make some dirs */
 109   if (rmdir("/tmp/foo") != 0) e(16);
 110
 111   /* Check the mode arument for mkdir() */
 112   for (mode = 0; mode <= 0777; mode++) {
 113         if (mkdir("foo", mode) != 0) e(17);     /* make foo */
 114         if (stat("foo", &st) != 0) e(18);
 115         if ((st.st_mode & 0777) != mode) e(19); /* check it's mode */
 116         if (rmdir("foo") != 0) e(20);   /* and remove it */
 117   }
 118
 119   /* Check the stat */
 120   time(&time1);
 121   while (time1 >= time((time_t *)0))
 122         ;
 123   if (mkdir("foo", 0765) != 0) e(21);   /* make foo */
 124   if (stat("foo", &st) != 0) e(22);
 125   time(&time2);
 126   while (time2 >= time((time_t *)0))
 127         ;
 128   time(&time2);
 129   if (st.st_nlink != 2) e(23);
 130   if (st.st_uid != geteuid()) e(24);
 131   if (st.st_gid != getegid()) e(25);
 132   if (st.st_size < 0) e(26);
 133   if ((st.st_mode & 0777) != 0765) e(27);
 134   if (st.st_atime <= time1) e(28);
 135   if (st.st_atime >= time2) e(29);
 136   if (st.st_ctime <= time1) e(30);
 137   if (st.st_ctime >= time2) e(31);
 138   if (st.st_mtime <= time1) e(32);
 139   if (st.st_mtime >= time2) e(33);
 140
 141   /* Check if parent is updated */
 142   if (stat(".", &st) != 0) e(34);
 143   time(&time2);
 144   while (time2 >= time((time_t *)0))
 145         ;
 146   time(&time2);
 147   if (st.st_ctime <= time1) e(35);
 148   if (st.st_ctime >= time2) e(36);
 149   if (st.st_mtime <= time1) e(37);
 150   if (st.st_mtime >= time2) e(38);
 151   time(&time1);
 152   while (time1 >= time((time_t *)0))
 153         ;
 154   if (rmdir("foo") != 0) e(39);
 155   if (stat(".", &st) != 0) e(40);
 156   time(&time2);
 157   while (time2 >= time((time_t *)0))
 158         ;
 159   time(&time2);
 160   if (st.st_ctime <= time1) e(41);
 161   if (st.st_ctime >= time2) e(42);
 162   if (st.st_mtime <= time1) e(43);
 163   if (st.st_mtime >= time2) e(44);
 164 }
 165
 166 void test28b()
 167 {                               /* Test critical values. */
 168   struct stat st;
 169   DIR *dirp;
 170   struct dirent *dep;
 171   int fd;                       /* file descriptor */
 172   int other = 0, dot = 0, dotdot = 0;   /* dirent counters */
 173   int rmdir_result;             /* tmp var */
 174   nlink_t nlink;
 175   static char bar[20];
 176   int stat_loc;
 177
 178   subtest = 2;
 179
 180   System("rm -rf ../DIR_28/*");
 181
 182   /* Check funny but valid path names */
 183   if (mkdir("/../../..////.//../tmp/foo/", 0777) != 0) e(1);
 184   if (mkdir("/tmp/foo//////..//foo//../foo/bar/", 0777) != 0) e(2);
 185   if (rmdir("///tmp/..//tmp/foo/bar//../..//foo/bar") != 0) e(3);
 186   if (mkdir("///tmp/foo/foobar//", 0777) != 0) e(4);
 187   if (rmdir("/tmp/foo/foobar//") != 0) e(5);
 188   if (rmdir("/.././/././/tmp/foo///////////////") != 0) e(6);
 189   if (rmdir("/tmp/foo") != -1) e(7);    /* try again */
 190
 191   /* Test max path ed. */
 192   if (mkdir(MaxName, 0777) != 0) e(9);  /* make dir MaxName */
 193   if (rmdir(MaxName) != 0) e(10);       /* and remove it */
 194   MaxPath[strlen(MaxPath) - 2] = '/';   /* convert MaxPath */
 195   MaxPath[strlen(MaxPath) - 1] = 'a';   /* to ././.../a */
 196   if (mkdir(MaxPath, 0777) != 0) e(11); /* it should be */
 197   if (rmdir(MaxPath) != 0) e(12);       /* ok */
 198
 199   /* Test too long path ed. */
 200   if (mkdir(ToLongName, 0777) != 0) e(17);      /* Try ToLongName */
 201   if (rmdir(ToLongName) != 0) e(18);    /* and remove it */
 202   ToLongPath[strlen(ToLongPath) - 2] = '/';     /* make ToLongPath */
 203   ToLongPath[strlen(ToLongPath) - 1] = 'a';     /* contain ././.../a */
 204   if (mkdir(ToLongPath, 0777) != -1) e(19);     /* it should */
 205   if (errno != ENAMETOOLONG) e(20);     /* not be ok */
 206   if (rmdir(ToLongPath) != -1) e(21);
 207   if (errno != ENAMETOOLONG) e(22);
 208
 209   if (mkdir("foo", 0777) != 0) e(23);
 210   System("touch foo/xyzzy");
 211 #if 0
 212   /* Test what happens if the parent link count > LINK_MAX. */
 213   /* This takes too long. */
 214   for (nlink = 1; nlink < LINK_MAX; nlink++) {  /* make all */
 215         sprintf(bar, "foo/bar.%d", nlink);
 216         if (link("foo/xyzzy", bar) != 0) e(24);
 217   }
 218   if (stat("foo/xyzzy", &st) != 0) e(25);       /* foo now */
 219   if (st.st_nlink != LINK_MAX) e(26);   /* is full */
 220   if (link("foo/xyzzy", "nono") != -1) e(27);   /* no more */
 221   if (errno != EMLINK) e(28);   /* entrys. */
 222   System("rm -rf foo/nono");    /* Just in case. */
 223 #endif
 224
 225   /* Test if rmdir removes only empty dirs */
 226   if (rmdir("foo") != -1) e(29);/* not empty */
 227   if (errno != EEXIST && errno != ENOTEMPTY) e(30);
 228   /* Test if rmdir removes a dir with an empty file (it shouldn't.) */
 229   System("rm -rf foo");         /* cleanup */
 230   if (mkdir("foo", 0777) != 0) e(31);
 231   System("> foo/empty");        /* > empty */
 232   if (rmdir("foo") != -1) e(32);/* not empty */
 233   if (errno != EEXIST && errno != ENOTEMPTY) e(33);
 234   if (unlink("foo/empty") != 0) e(34);  /* rm empty */
 235
 236   /* See what happens if foo is linked. */
 237 #if 0
 238   if (superuser) {
 239         if (link("foo", "footoo") != 0) e(35);  /* foo still */
 240         if (rmdir("footoo") != 0) e(36);        /* exist */
 241         if (chdir("footoo") != -1) e(37);       /* footoo */
 242         if (errno != ENOENT) e(38);     /* is gone */
 243   }
 244 #endif
 245 #ifdef _MINIX
 246   /* Some implementations might allow users to link directories. */
 247   if (!superuser) {
 248         if (link("foo", "footoo") != -1) e(39);
 249         if (errno != EPERM) e(40);
 250         if (unlink("foo") != -1) e(41);
 251         if (errno != EPERM) e(42);
 252   }
 253 #endif
 254
 255   /* See if ".." and "." are removed from the dir, and if it is
 256    * unwriteable
 257    * Note, we can not remove any files in the PARENT
 258    * process, because this
 259    * will make readdir unpredicatble. (see
 260    * 1003.1 page 84 line 30.) However
 261    * removal of the directory is
 262    * not specified in the standard.
 263    */
 264   System("rm -rf /tmp/sema[12].07");
 265   switch (fork()) {
 266       case -1:  printf("Can't fork\n"); break;
 267
 268       case 0:
 269         alarm(20);
 270         if ((fd = open("foo", O_RDONLY)) <= 2) e(43);   /* open */
 271         if ((dirp = opendir("foo")) == (DIR *) NULL) e(44);     /* opendir */
 272         /* UpA downB */
 273         system(">/tmp/sema1.07; while test -f /tmp/sema1.07; do sleep 1;done");
 274         while ((dep = readdir(dirp)) != DIRENT0) {
 275                 if (strcmp(dep->d_name, "..") == 0)
 276                         dotdot += 1;
 277                 else if (strcmp(dep->d_name, ".") == 0)
 278                         dot += 1;
 279                 else
 280                         other += 1;
 281         }
 282         if (dotdot != 0) e(45); /* no entrys */
 283         if (dot != 0) e(46);    /* shoul be */
 284         if (other != 0) e(47);  /* left or */
 285
 286         /* No new files (entrys) are allowed on foo */
 287         if (creat("foo/nono", 0777) != -1) e(48);       /* makeable */
 288         if (closedir(dirp) != 0) e(49); /* close foo */
 289         system("while test ! -f /tmp/sema2.07; do sleep 1; done");  /* downA */
 290         System("rm -f /tmp/sema2.07");  /* clean up */
 291
 292         /* Foo still exist, so we should be able to get a fstat */
 293         if (fstat(fd, &st) != 0) e(50);
 294         if (st.st_nlink != (nlink_t) 0) e(51);  /* 0 left */
 295         if (close(fd) != 0) e(52);      /* last one */
 296         exit(0);
 297
 298       default:
 299         system("while test ! -f /tmp/sema1.07; do sleep 1; done");  /* downA */
 300         if (rmdir("foo") != 0) e(53);   /* cleanerup */
 301         System("rm -f /tmp/sema1.07");  /* upB */
 302         if (chdir("foo") != -1) e(54);  /* it should */
 303         if (errno != ENOENT) e(55);     /* be gone */
 304         System("> /tmp/sema2.07");      /* upA */
 305         if (wait(&stat_loc) == -1) e(56);
 306         if (stat_loc != 0) e(57);
 307   }
 308
 309   /* See if foo isn't accessible any more */
 310   if (chdir("foo") != -1) e(58);
 311   if (errno != ENOENT) e(59);
 312
 313   /* Let's see if we can get a EBUSSY..... */
 314   if (mkdir("foo", 0777) != 0) e(60);   /* mkdir foo */
 315   System("rm -f /tmp/sema.07"); /* unness */
 316   switch (fork()) {
 317       case -1:  printf("Can't fork\n"); break;
 318       case 0:
 319         alarm(20);
 320         if (chdir("foo") != 0) e(61);   /* child goes */
 321         System("> /tmp/sema.07");       /* upA */
 322         system("while test -f /tmp/sema.07; do sleep 1; done"); /* downB */
 323         sleep(1);
 324         exit(0);
 325       default:
 326         system("while test ! -f /tmp/sema.07; do sleep 1; done");   /* downA */
 327         rmdir_result = rmdir("foo");    /* try remove */
 328         if (rmdir_result == -1) {       /* if it failed */
 329                 if (errno != EBUSY) e(62);      /* foo is busy */
 330         } else {
 331                 if (rmdir_result != 0) e(63);
 332                 if (rmdir("foo") != -1) e(64);  /* not removable */
 333                 if (errno != ENOENT) e(65);     /* again. */
 334                 if (chdir("foo") != -1) e(66);  /* we can't go */
 335                 if (errno != ENOENT) e(67);     /* there any more */
 336                 if (mkdir("foo", 0777) != 0) e(68);     /* we can remake foo */
 337         }
 338         System("rm -f /tmp/sema.07");   /* upB */
 339         if (wait(&stat_loc) == -1) e(69);
 340         if (stat_loc != 0) e(70);
 341   }
 342   if (rmdir("foo") != 0) e(71); /* clean up */
 343 }
 344
 345 void test28c()
 346 {                               /* Test error handeling. */
 347   subtest = 3;
 348
 349   System("rm -rf ../DIR_28/*");
 350   System("rm -rf foo /tmp/foo");/* clean up junk */
 351
 352   /* Test common errors */
 353   if (mkdir("foo", 0777) != 0) e(1);    /* mkdir shouldn't fail */
 354   if (mkdir("foo", 0777) != -1) e(2);   /* should fail the 2d time */
 355   if (errno != EEXIST) e(3);    /* because it exists already */
 356   if (rmdir("foo") != 0) e(4);  /* rmdir shouldn't fail */
 357   if (rmdir("foo") != -1) e(5); /* but it should now because */
 358   if (errno != ENOENT) e(6);    /* it's gone the 1st time */
 359   /* Test on access etc. */
 360   if (mkdir("foo", 0777) != 0) e(7);
 361   if (mkdir("foo/bar", 0777) != 0) e(8);
 362   if (!superuser) {
 363         System("chmod 677 foo");/* make foo inaccesable */
 364         if (mkdir("foo/foo", 0777) != -1) e(9);
 365         if (errno != EACCES) e(10);
 366         if (rmdir("foo/bar") != -1) e(11);
 367         if (errno != EACCES) e(12);
 368         System("chmod 577 foo");/* make foo unwritable */
 369         if (mkdir("foo/foo", 0777) != -1) e(13);
 370         if (errno != EACCES) e(14);
 371         if (rmdir("foo/bar") != -1) e(15);
 372         if (errno != EACCES) e(16);
 373         System("chmod 777 foo");/* make foo full accessable */
 374   }
 375   if (rmdir("foo/bar") != 0) e(17);     /* bar should be removable */
 376   if (mkdir("foo/no/foo", 0777) != -1) e(18);   /* Note: "no" doesn't exist */
 377   if (errno != ENOENT) e(19);
 378   if (mkdir("", 0777) != -1) e(20);     /* empty string isn't ok */
 379   if (errno != ENOENT) e(21);
 380   if (rmdir("") != -1) e(22);   /* empty string isn't ok */
 381   if (errno != ENOENT) e(23);
 382   System("> foo/no");           /* make a file "no" */
 383   if (mkdir("foo/no/foo", 0777) != -1) e(24);
 384   if (errno != ENOTDIR) e(25);  /* note: "no" is not a a dir */
 385   if (rmdir("foo/no/foo") != -1) e(26);
 386   if (errno != ENOTDIR) e(27);
 387   System("rm -rf foo");         /* clean up */
 388 }
 389
 390 void makelongnames()
 391 {
 392   register int i;
 393
 394   memset(MaxName, 'a', NAME_MAX);
 395   MaxName[NAME_MAX] = '\0';
 396   for (i = 0; i < PATH_MAX - 1; i++) {  /* idem path */
 397         MaxPath[i++] = '.';
 398         MaxPath[i] = '/';
 399   }
 400   MaxPath[PATH_MAX - 1] = '\0';
 401
 402   strcpy(ToLongName, MaxName);  /* copy them Max to ToLong */
 403   strcpy(ToLongPath, MaxPath);
 404
 405   ToLongName[NAME_MAX] = 'a';
 406   ToLongName[NAME_MAX + 1] = '\0';      /* extend ToLongName by one too many */
 407   ToLongPath[PATH_MAX - 1] = '/';
 408   ToLongPath[PATH_MAX] = '\0';  /* inc ToLongPath by one */
 409 }
 410
 411 void e(n)
 412 int n;
 413 {
 414   int err_num = errno;          /* Save in case printf clobbers it. */
 415
 416   printf("Subtest %d,  error %d  errno=%d: ", subtest, n, errno);
 417   errno = err_num;
 418   perror("");
 419   if (errct++ > MAX_ERROR) {
 420         printf("Too many errors; test aborted\n");
 421         chdir("..");
 422         system("rm -rf DIR*");
 423         exit(1);
 424   }
 425   errno = 0;
 426 }
 427
 428 void quit()
 429 {
 430   Chdir("..");
 431   System("rm -rf DIR_28");
 432
 433   if (errct == 0) {
 434         printf("ok\n");
 435         exit(0);
 436   } else {
 437         printf("%d errors\n", errct);
 438         exit(1);
 439   }
 440 }