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