minix/tests/test27.c

   1 /* test27: stat() fstat()       Author: Jan-Mark Wams (jms@cs.vu.nl) */
   2
   3 #include <sys/types.h>
   4 #include <sys/stat.h>
   5 #include <fcntl.h>
   6 #include <unistd.h>
   7 #include <stdlib.h>
   8 #include <errno.h>
   9 #include <limits.h>
  10 #include <string.h>
  11 #include <limits.h>
  12 #include <time.h>
  13 #include <stdio.h>
  14
  15 #define MODE_MASK       (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID)
  16 int max_error =         4;
  17 #include "common.h"
  18
  19 #define ITERATIONS      2
  20
  21 #define System(cmd)     if (system(cmd) != 0) printf("``%s'' failed\n", cmd)
  22 #define Chdir(dir)      if (chdir(dir) != 0) printf("Can't goto %s\n", dir)
  23
  24
  25 int superuser;
  26 char *MaxName;                  /* Name of maximum length */
  27 char MaxPath[PATH_MAX];
  28 char *ToLongName;               /* Name of maximum +1 length */
  29 char ToLongPath[PATH_MAX + 1];
  30
  31 void test27a(void);
  32 void test27b(void);
  33 void test27c(void);
  34 void makelongnames(void);
  35
  36 int main(int argc, char *argv[])
  37 {
  38   int i, m = 0xFFFF;
  39
  40   start(27);
  41   if (argc == 2) m = atoi(argv[1]);
  42   superuser = (getuid() == 0);
  43   makelongnames();
  44
  45   for (i = 0; i < ITERATIONS; i++) {
  46         if (m & 0001) test27a();
  47         if (m & 0002) test27b();
  48         if (m & 0004) test27c();
  49   }
  50   quit();
  51
  52   return(-1);   /* Unreachable */
  53 }
  54
  55 void test27a()
  56 {                               /* Test Normal operation. */
  57   struct stat st1, st2;
  58   time_t time1, time2;
  59   int fd, pfd[2];
  60
  61   subtest = 1;
  62
  63   time(&time1);                 /* get time before */
  64   while (time1 >= time((time_t *)0))
  65         ;                       /* Wait for time to change. */
  66   System("echo 7bytes > foo; chmod 4750 foo");
  67   if (stat("foo", &st1) != 0) e(1);     /* get foo's info */
  68   time(&time2);
  69   while (time2 >= time((time_t *)0))
  70         ;                       /* Wait for next second. */
  71   time(&time2);                 /* get time after */
  72   if ((st1.st_mode & MODE_MASK) != 04750) e(2);
  73   if (st1.st_nlink != 1) e(3);  /* check stat */
  74   if (st1.st_uid != geteuid()) e(4);
  75 #if defined(NGROUPS_MAX) && NGROUPS_MAX == 0
  76   if (st1.st_gid != getegid()) e(5);
  77 #endif /* defined(NGROUPS_MAX) && NGROUPS_MAX == 0 */
  78   if (st1.st_size != (size_t) 7) e(6);
  79   if (st1.st_atime <= time1) e(7);
  80   if (st1.st_atime >= time2) e(8);
  81   if (st1.st_ctime <= time1) e(9);
  82   if (st1.st_ctime >= time2) e(10);
  83   if (st1.st_mtime <= time1) e(11);
  84   if (st1.st_mtime >= time2) e(12);
  85
  86   /* Compair stat and fstat. */
  87   System("echo 7bytes > bar");
  88   fd = open("bar", O_RDWR | O_APPEND);  /* the bar is open! */
  89   if (fd != 3) e(13);           /* should be stderr + 1 */
  90   if (stat("bar", &st1) != 0) e(14);    /* get bar's info */
  91   if (fstat(fd, &st2) != 0) e(15);      /* get bar's info */
  92
  93   /* St1 en st2 should be the same. */
  94   if (st1.st_dev != st2.st_dev) e(16);
  95   if (st1.st_ino != st2.st_ino) e(17);
  96   if (st1.st_mode != st2.st_mode) e(18);
  97   if (st1.st_nlink != st2.st_nlink) e(19);
  98   if (st1.st_uid != st2.st_uid) e(20);
  99   if (st1.st_gid != st2.st_gid) e(21);
 100   if (st1.st_size != st2.st_size) e(22);
 101   if (st1.st_atime != st2.st_atime) e(23);
 102   if (st1.st_ctime != st2.st_ctime) e(24);
 103   if (st1.st_mtime != st2.st_mtime) e(25);
 104   time(&time1);                 /* wait a sec. */
 105   while (time1 >= time((time_t *)0))
 106         ;
 107   System("chmod 755 bar");      /* chainge mode */
 108   System("rm -f foobar; ln bar foobar");        /* chainge # links */
 109   if (write(fd, "foo", 4) != 4) e(26);  /* write a bit (or two) */
 110   if (stat("bar", &st2) != 0) e(27);    /* get new info */
 111   if (st2.st_dev != st1.st_dev) e(28);
 112   if (st2.st_ino != st1.st_ino) e(29);  /* compair the fealds */
 113   if ((st2.st_mode & MODE_MASK) != 0755) e(30);
 114   if (!S_ISREG(st2.st_mode)) e(31);
 115   if (st2.st_nlink != st1.st_nlink + 1) e(32);
 116   if (st2.st_uid != st1.st_uid) e(33);
 117   if (st2.st_gid != st1.st_gid) e(34);
 118   if (st2.st_size != (size_t) 11) e(35);
 119   if (st2.st_atime != st1.st_atime) e(36);
 120   if (st2.st_ctime <= st1.st_ctime) e(37);
 121   if (st2.st_mtime <= st1.st_mtime) e(38);
 122   if (close(fd) != 0) e(39);    /* sorry the bar is closed */
 123
 124   /* Check special file. */
 125   if (stat("/dev/tty", &st1) != 0) e(40);
 126   if (!S_ISCHR(st1.st_mode)) e(41);
 127 #if defined(__minix) && defined(_NETBSD_SOURCE)
 128   if (stat("/dev/ram", &st1) != 0) e(42);
 129   if (!S_ISBLK(st1.st_mode)) e(43);
 130 #endif
 131
 132   /* Check fifos. */
 133   time(&time1);
 134   while (time1 >= time((time_t *)0))
 135         ;
 136   if (mkfifo("fifo", 0640) != 0) e(44);
 137   if (stat("fifo", &st1) != 0) e(45);   /* get fifo's info */
 138   time(&time2);
 139   while (time2 >= time((time_t *)0))
 140         ;
 141   time(&time2);
 142   if (!S_ISFIFO(st1.st_mode)) e(46);
 143   if (st1.st_nlink != 1) e(47); /* check the stat info */
 144   if (st1.st_uid != geteuid()) e(48);
 145 #if defined(NGROUPS_MAX) && NGROUPS_MAX == 0
 146   if (st1.st_gid != getegid()) e(49);
 147 #endif /* defined(NGROUPS_MAX) && NGROUPS_MAX == 0 */
 148   if (st1.st_size != (size_t) 0) e(50);
 149   if (st1.st_atime <= time1) e(51);
 150   if (st1.st_atime >= time2) e(52);
 151   if (st1.st_ctime <= time1) e(53);
 152   if (st1.st_ctime >= time2) e(54);
 153   if (st1.st_mtime <= time1) e(55);
 154   if (st1.st_mtime >= time2) e(56);
 155
 156   /* Note: the st_mode of a fstat on a pipe should contain a isfifo bit. */
 157   /* Check pipes. */
 158   time(&time1);
 159   while (time1 >= time((time_t *)0))
 160         ;
 161   if (pipe(pfd) != 0) e(57);
 162   if (fstat(pfd[0], &st1) != 0) e(58);  /* get pipe input info */
 163   time(&time2);
 164   while (time2 >= time((time_t *)0))
 165         ;
 166   time(&time2);
 167   if (!(S_ISFIFO(st1.st_mode))) e(59);  /* check stat struct */
 168   if (st1.st_uid != geteuid()) e(60);
 169   if (st1.st_gid != getegid()) e(61);
 170   if (st1.st_size != (size_t) 0) e(62);
 171   if (st1.st_atime <= time1) e(63);
 172   if (st1.st_atime >= time2) e(64);
 173   if (st1.st_ctime <= time1) e(65);
 174   if (st1.st_ctime >= time2) e(66);
 175   if (st1.st_mtime <= time1) e(67);
 176   if (st1.st_mtime >= time2) e(68);
 177   if (fstat(pfd[1], &st1) != 0) e(69);  /* get pipe output info */
 178   if (!(S_ISFIFO(st1.st_mode))) e(70);
 179   if (st1.st_uid != geteuid()) e(71);
 180   if (st1.st_gid != getegid()) e(72);
 181   if (st1.st_size != (size_t) 0) e(73);
 182   if (st1.st_atime < time1) e(74);
 183   if (st1.st_atime > time2) e(75);
 184   if (st1.st_ctime < time1) e(76);
 185   if (st1.st_ctime > time2) e(77);
 186   if (st1.st_mtime < time1) e(78);
 187   if (st1.st_mtime > time2) e(79);
 188   if (close(pfd[0]) != 0) e(80);
 189   if (close(pfd[1]) != 0) e(81);/* close pipe */
 190
 191   /* Check dirs. */
 192   time(&time1);
 193   while (time1 >= time((time_t *)0))
 194         ;
 195   System("mkdir dir");
 196   if (stat("dir", &st1) != 0) e(82);    /* get dir info */
 197   time(&time2);
 198   while (time2 >= time((time_t *)0))
 199         ;
 200   time(&time2);
 201   if (!(S_ISDIR(st1.st_mode))) e(83);   /* check stat struct */
 202   if (st1.st_uid != geteuid()) e(84);
 203 #if defined(NGROUPS_MAX) && NGROUPS_MAX == 0
 204   if (st1.st_gid != getegid()) e(85);
 205 #endif /* defined(NGROUPS_MAX) && NGROUPS_MAX == 0 */
 206   if (st1.st_atime < time1) e(86);
 207   if (st1.st_atime > time2) e(87);
 208   if (st1.st_ctime < time1) e(88);
 209   if (st1.st_ctime > time2) e(89);
 210   if (st1.st_mtime < time1) e(90);
 211   if (st1.st_mtime > time2) e(91);
 212   System("rm -rf ../DIR_27/*");
 213 }
 214
 215 void test27b()
 216 {                               /* Test maxima. */
 217   struct stat st;
 218   int fd;
 219
 220   subtest = 2;
 221
 222   /* Check stats on maximum length files names. */
 223   if (mkdir(MaxName, 0777) != 0) e(1);
 224   if (stat(MaxName, &st) != 0) e(2);
 225   if ((fd = open(MaxName, O_RDONLY)) != 3) e(3);
 226   if (fstat(fd, &st) != 0) e(4);
 227   if (close(fd) != 0) e(5);
 228   if (rmdir(MaxName) != 0) e(6);
 229   if (stat(MaxPath, &st) != 0) e(7);
 230   if ((fd = open(MaxPath, O_RDONLY)) != 3) e(8);
 231   if (fstat(fd, &st) != 0) e(9);
 232   if (close(fd) != 0) e(10);
 233   System("rm -rf ../DIR_27/*");
 234 }
 235
 236 void test27c()
 237 {                               /* Test error response. */
 238   struct stat st;
 239   int fd, i;
 240
 241   subtest = 3;
 242
 243   System("echo Hi > foo");      /* Make a file called foo. */
 244   /* Check if a un searchable dir is handled ok. */
 245   Chdir("..");                  /* cd .. */
 246   System("chmod 677 DIR_27");   /* no search permission */
 247   if (stat("DIR_27/nono", &st) != -1) e(1);
 248   if (superuser) {
 249         if (errno != ENOENT) e(2);      /* su has access */
 250   }
 251   if (!superuser) {
 252         if (errno != EACCES) e(3);      /* we don't ;-) */
 253   }
 254   System("chmod 777 DIR_27");
 255   Chdir("DIR_27");              /* back to test dir */
 256
 257   /* Check on ToLongName etc. */
 258   if (stat(ToLongPath, &st) != -1) e(6);        /* path is too long */
 259   if (errno != ENAMETOOLONG) e(7);
 260
 261   /* Test some common errors. */
 262   if (stat("nono", &st) != -1) e(8);    /* nono nonexistent */
 263   if (errno != ENOENT) e(9);
 264   if (stat("", &st) != -1) e(10);       /* try empty */
 265   if (errno != ENOENT) e(11);
 266   if (stat("foo/bar", &st) != -1) e(12);        /* foo is a file */
 267   if (errno != ENOTDIR) e(13);
 268
 269   /* Test fstat on file descriptors that are not open. */
 270   for (i = 3; i < 6; i++) {
 271         if (fstat(i, &st) != -1) e(14);
 272         if (errno != EBADF) e(15);
 273   }
 274
 275   /* Test if a just closed file is `fstat()'-able. */
 276   if ((fd = open("foo", O_RDONLY)) != 3) e(16); /* open foo */
 277   if (fstat(fd, &st) != 0) e(17);       /* get stat */
 278   if (close(fd) != 0) e(18);    /* close it */
 279   if (fstat(fd, &st) != -1) e(19);      /* get stat */
 280   if (errno != EBADF) e(20);
 281   System("rm -rf ../DIR_27/*");
 282 }
 283
 284 void makelongnames()
 285 {
 286   register int i;
 287   int max_name_length;
 288
 289   max_name_length = name_max("."); /* Aka NAME_MAX, but not every FS supports
 290                                     * the same length, hence runtime check */
 291   MaxName = malloc(max_name_length + 1);
 292   ToLongName = malloc(max_name_length + 1 + 1); /* Name of maximum +1 length */
 293   memset(MaxName, 'a', max_name_length);
 294   MaxName[max_name_length] = '\0';
 295
 296   for (i = 0; i < PATH_MAX - 1; i++) {  /* idem path */
 297         MaxPath[i++] = '.';
 298         MaxPath[i] = '/';
 299   }
 300   MaxPath[PATH_MAX - 1] = '\0';
 301
 302   strcpy(ToLongName, MaxName);  /* copy them Max to ToLong */
 303   strcpy(ToLongPath, MaxPath);
 304
 305   ToLongName[max_name_length] = 'a';
 306   ToLongName[max_name_length+1] = '\0';/* extend ToLongName by one too many */
 307   ToLongPath[PATH_MAX - 1] = '/';
 308   ToLongPath[PATH_MAX] = '\0';  /* inc ToLongPath by one */
 309 }
 310