test/common.c

   1 /* Utility routines for Minix tests.
   2  * This is designed to be #includ'ed near the top of test programs.  It is
   3  * self-contained except for MAX_ERRORS.
   4  */
   5
   6 #include <errno.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10 #include <stdio.h>
  11
  12 int common_test_nr = -1, errct = 0, subtest;
  13
  14 _PROTOTYPE(void cleanup, (void));
  15 _PROTOTYPE(void e, (int n));
  16 _PROTOTYPE(void quit, (void));
  17 _PROTOTYPE(void rm_rf_dir, (int test_nr));
  18 _PROTOTYPE(void rm_rf_ppdir, (int test_nr));
  19 _PROTOTYPE(void start, (int test_nr));
  20
  21 void start(test_nr)
  22 int test_nr;
  23 {
  24   char buf[64];
  25
  26   common_test_nr = test_nr;
  27   printf("Test %2d ", test_nr);
  28   fflush(stdout);               /* since stdout is probably line buffered */
  29   sync();
  30   rm_rf_dir(test_nr);
  31   sprintf(buf, "mkdir DIR_%02d", test_nr);
  32   if (system(buf) != 0) {
  33         e(666);
  34         quit();
  35   }
  36   sprintf(buf, "DIR_%02d", test_nr);
  37   if (chdir(buf) != 0) {
  38         e(6666);
  39         quit();
  40   }
  41 }
  42
  43 void rm_rf_dir(test_nr)
  44 int test_nr;
  45 {
  46   char buf[128];
  47
  48   /* "rm -rf dir" will not work unless all the subdirectories have suitable
  49    * permissions.  Minix chmod is not recursive so it is not easy to change
  50    * all the permissions.  I had to fix opendir() to stop the bash shell
  51    * from hanging when it opendir()s fifos.
  52    */
  53   sprintf(buf, "chmod 777 DIR_%02d DIR_%02d/* DIR_%02d/*/* >/dev/null 2>&1",
  54           test_nr, test_nr, test_nr);
  55   (void) system(buf);           /* usually fails */
  56   sprintf(buf, "rm -rf DIR_%02d >/dev/null 2>&1", test_nr);
  57   if (system(buf) != 0) printf("Warning: system(\"%s\") failed\n", buf);
  58 }
  59
  60 void rm_rf_ppdir(test_nr)
  61 int test_nr;
  62 {
  63 /* Attempt to remove everything in the test directory (== the current dir). */
  64
  65   char buf[128];
  66
  67   sprintf(buf, "chmod 777 ../DIR_%02d/* ../DIR_%02d/*/* >/dev/null 2>&1",
  68           test_nr, test_nr);
  69   (void) system(buf);
  70   sprintf(buf, "rm -rf ../DIR_%02d >/dev/null 2>&1", test_nr);
  71   if (system(buf) != 0) printf("Warning: system(\"%s\") failed\n", buf);
  72 }
  73
  74 void e(n)
  75 int n;
  76 {
  77   if (errct == 0) printf("\n"); /* finish header */
  78   printf("Subtest %d,  error %d,  errno %d: %s\n",
  79          subtest, n, errno, strerror(errno));
  80   if (errct++ > MAX_ERROR) {
  81         printf("Too many errors; test aborted\n");
  82         cleanup();
  83         exit(1);
  84   }
  85   errno = 0;                    /* don't leave it around to confuse next e() */
  86 }
  87
  88 void cleanup()
  89 {
  90   if (chdir("..") == 0 && common_test_nr != -1) rm_rf_dir(common_test_nr);
  91 }
  92
  93 void quit()
  94 {
  95   cleanup();
  96   if (errct == 0) {
  97         printf("ok\n");
  98         exit(0);
  99   } else {
 100         printf("%d errors\n", errct);
 101         exit(1);
 102   }
 103 }