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