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 #include <sys/stat.h>
   9
  10 #include <support/xunistd.h>
  11
  12 #ifndef O_NOATIME
  13 # define O_NOATIME      0
  14 #endif
  15
  16 static int
  17 do_test (void)
  18 {
  19   char fname[] = "/tmp/jXXXXXX";
  20   int fd = mkstemp (fname);
  21   if (fd == -1)
  22     {
  23       puts ("mkstemp failed");
  24       return 1;
  25     }
  26
  27   xwrite (fd, "hello", 5);
  28   close (fd);
  29
  30   struct stat64 st;
  31   if (stat64 (fname, &st) == -1)
  32     {
  33       puts ("first stat failed");
  34       return 0;
  35     }
  36
  37   /* Make sure there is enough time between the creation and the access.  */
  38   sleep (2);
  39
  40   fd = open (fname, O_RDONLY | O_NOATIME);
  41   if (fd == -1)
  42     {
  43       puts ("first open failed");
  44       return 1;
  45     }
  46
  47   char buf[5];
  48   xread(fd, buf, sizeof (buf));
  49
  50   close(fd);
  51
  52   struct stat64 st2;
  53   if (stat64 (fname, &st2) == -1)
  54     {
  55       puts ("second stat failed");
  56       return 0;
  57     }
  58
  59   bool no_noatime = false;
  60 #ifdef _STATBUF_ST_NSEC
  61   if (st.st_atim.tv_sec != st2.st_atim.tv_sec
  62       || st.st_atim.tv_nsec != st2.st_atim.tv_nsec)
  63 #else
  64   if (st.st_atime != st2.st_atime)
  65 #endif
  66     {
  67       puts ("file atime changed");
  68       no_noatime = true;
  69     }
  70
  71   unlink(fname);
  72
  73   strcpy(fname, "/tmp/dXXXXXX");
  74   char *d = mkdtemp (fname);
  75   if (d == NULL)
  76     {
  77       puts ("mkdtemp failed");
  78       return 1;
  79     }
  80
  81   if (stat64 (d, &st) == -1)
  82     {
  83       puts ("third stat failed");
  84       return 0;
  85     }
  86   sleep (2);
  87
  88   fd = open64 (d, O_RDONLY|O_NDELAY|O_DIRECTORY|O_NOATIME);
  89   if (fd == -1)
  90     {
  91       puts ("second open failed");
  92       return 1;
  93     }
  94   DIR *dir = fdopendir (fd);
  95   if (dir == NULL)
  96     {
  97       puts ("fdopendir failed");
  98       return 1;
  99     }
 100
 101   struct dirent *de;
 102   while ((de = readdir (dir)) != NULL)
 103     ;
 104
 105   closedir (dir);
 106
 107   if (stat64 (d, &st2) == -1)
 108     {
 109       puts ("fourth stat failed");
 110       return 0;
 111     }
 112 #ifdef _STATBUF_ST_NSEC
 113   if (!no_noatime
 114       && (st.st_atim.tv_sec != st2.st_atim.tv_sec
 115          || st.st_atim.tv_nsec != st2.st_atim.tv_nsec))
 116 #else
 117   if (!no_noatime && st.st_atime != st2.st_atime)
 118 #endif
 119     {
 120       puts ("directory atime changed");
 121       return 1;
 122     }
 123
 124   rmdir(fname);
 125
 126   return 0;
 127 }
 128
 129 #define TEST_FUNCTION do_test ()
 130 #include "../test-skeleton.c"