dirent/tst-fdopendir.c

   1 #include <stdio.h>
   2 #include <fcntl.h>
   3 #include <stdlib.h>
   4 #include <unistd.h>
   5 #include <dirent.h>
   6 #include <stdbool.h>
   7 #include <string.h>
   8
   9
  10 static int
  11 do_test (void)
  12 {
  13   char fname[] = "/tmp/jXXXXXX";
  14   int fd = mkstemp (fname);
  15   if (fd == -1)
  16     {
  17       puts ("mkstemp failed");
  18       return 1;
  19     }
  20
  21   write (fd, "hello", 5);
  22   close (fd);
  23
  24   struct stat64 st;
  25   if (stat64 (fname, &st) == -1)
  26     {
  27       puts ("first stat failed");
  28       return 0;
  29     }
  30
  31   /* Make sure there is enough time between the creation and the access.  */
  32   sleep (2);
  33
  34   fd = open (fname, O_RDONLY | O_NOATIME);
  35   if (fd == -1)
  36     {
  37       puts ("first open failed");
  38       return 1;
  39     }
  40
  41   char buf[5];
  42   read(fd, buf, sizeof (buf));
  43   close(fd);
  44
  45   struct stat64 st2;
  46   if (stat64 (fname, &st2) == -1)
  47     {
  48       puts ("second stat failed");
  49       return 0;
  50     }
  51
  52   bool no_noatime = false;
  53 #ifdef _STATBUF_ST_NSEC
  54   if (st.st_atim.tv_sec != st2.st_atim.tv_sec
  55       || st.st_atim.tv_nsec != st2.st_atim.tv_nsec)
  56 #else
  57   if (st.st_atime != st2.st_atime)
  58 #endif
  59     {
  60       puts ("file atime changed");
  61       no_noatime = true;
  62     }
  63
  64   unlink(fname);
  65
  66   strcpy(fname, "/tmp/dXXXXXX");
  67   char *d = mkdtemp (fname);
  68   if (d == NULL)
  69     {
  70       puts ("mkdtemp failed");
  71       return 1;
  72     }
  73
  74   if (stat64 (d, &st) == -1)
  75     {
  76       puts ("third stat failed");
  77       return 0;
  78     }
  79   sleep (2);
  80
  81   fd = open64 (d, O_RDONLY|O_NDELAY|O_DIRECTORY|O_NOATIME);
  82   if (fd == -1)
  83     {
  84       puts ("second open failed");
  85       return 1;
  86     }
  87   DIR *dir = fdopendir (fd);
  88   if (dir == NULL)
  89     {
  90       puts ("fdopendir failed");
  91       return 1;
  92     }
  93
  94   struct dirent *de;
  95   while ((de = readdir (dir)) != NULL)
  96     ;
  97
  98   closedir (dir);
  99
 100   if (stat64 (d, &st2) == -1)
 101     {
 102       puts ("fourth stat failed");
 103       return 0;
 104     }
 105 #ifdef _STATBUF_ST_NSEC
 106   if (!no_noatime
 107       && (st.st_atim.tv_sec != st2.st_atim.tv_sec
 108          || st.st_atim.tv_nsec != st2.st_atim.tv_nsec))
 109 #else
 110   if (!no_noatime && st.st_atime != st2.st_atime)
 111 #endif
 112     {
 113       puts ("directory atime changed");
 114       return 1;
 115     }
 116
 117   rmdir(fname);
 118
 119   return 0;
 120 }
 121
 122 #define TIMEOUT 6
 123 #define TEST_FUNCTION do_test ()
 124 #include "../test-skeleton.c"