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glibc  2.9
tst-mkdirat.c
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00001 #include <dirent.h>
00002 #include <fcntl.h>
00003 #include <stdio.h>
00004 #include <stdlib.h>
00005 #include <string.h>
00006 #include <unistd.h>
00007 
00008 
00009 static void prepare (void);
00010 #define PREPARE(argc, argv) prepare ()
00011 
00012 static int do_test (void);
00013 #define TEST_FUNCTION do_test ()
00014 
00015 #include "../test-skeleton.c"
00016 
00017 static int dir_fd;
00018 
00019 static void
00020 prepare (void)
00021 {
00022   size_t test_dir_len = strlen (test_dir);
00023   static const char dir_name[] = "/tst-mkdirat.XXXXXX";
00024 
00025   size_t dirbuflen = test_dir_len + sizeof (dir_name);
00026   char *dirbuf = malloc (dirbuflen);
00027   if (dirbuf == NULL)
00028     {
00029       puts ("out of memory");
00030       exit (1);
00031     }
00032 
00033   snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
00034   if (mkdtemp (dirbuf) == NULL)
00035     {
00036       puts ("cannot create temporary directory");
00037       exit (1);
00038     }
00039 
00040   add_temp_file (dirbuf);
00041 
00042   dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
00043   if (dir_fd == -1)
00044     {
00045       puts ("cannot open directory");
00046       exit (1);
00047     }
00048 }
00049 
00050 
00051 static int
00052 do_test (void)
00053 {
00054   /* fdopendir takes over the descriptor, make a copy.  */
00055   int dupfd = dup (dir_fd);
00056   if (dupfd == -1)
00057     {
00058       puts ("dup failed");
00059       return 1;
00060     }
00061   if (lseek (dupfd, 0, SEEK_SET) != 0)
00062     {
00063       puts ("1st lseek failed");
00064       return 1;
00065     }
00066 
00067   /* The directory should be empty safe the . and .. files.  */
00068   DIR *dir = fdopendir (dupfd);
00069   if (dir == NULL)
00070     {
00071       puts ("fdopendir failed");
00072       return 1;
00073     }
00074   struct dirent64 *d;
00075   while ((d = readdir64 (dir)) != NULL)
00076     if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
00077       {
00078        printf ("temp directory contains file \"%s\"\n", d->d_name);
00079        return 1;
00080       }
00081   closedir (dir);
00082 
00083   /* Create a new directory.  */
00084   int e = mkdirat (dir_fd, "some-dir", 0777);
00085   if (e == -1)
00086     {
00087       if (errno == ENOSYS)
00088        {
00089          puts ("*at functions not supported");
00090          return 0;
00091        }
00092 
00093       puts ("directory creation failed");
00094       return 1;
00095     }
00096 
00097   struct stat64 st1;
00098   if (fstatat64 (dir_fd, "some-dir", &st1, 0) != 0)
00099     {
00100       puts ("fstat64 failed");
00101       return 1;
00102     }
00103   if (!S_ISDIR (st1.st_mode))
00104     {
00105       puts ("mkdirat did not create a directory");
00106       return 1;
00107     }
00108 
00109   dupfd = dup (dir_fd);
00110   if (dupfd == -1)
00111     {
00112       puts ("dup failed");
00113       return 1;
00114     }
00115   if (lseek (dupfd, 0, SEEK_SET) != 0)
00116     {
00117       puts ("1st lseek failed");
00118       return 1;
00119     }
00120 
00121   dir = fdopendir (dupfd);
00122   if (dir == NULL)
00123     {
00124       puts ("2nd fdopendir failed");
00125       return 1;
00126     }
00127   bool has_some_dir = false;
00128   while ((d = readdir64 (dir)) != NULL)
00129     if (strcmp (d->d_name, "some-dir") == 0)
00130       {
00131        has_some_dir = true;
00132 #ifdef _DIRENT_HAVE_D_TYPE
00133        if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
00134          {
00135            puts ("d_type for some-dir wrong");
00136            return 1;
00137          }
00138 #endif
00139       }
00140     else if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
00141       {
00142        printf ("temp directory contains file \"%s\"\n", d->d_name);
00143        return 1;
00144       }
00145   closedir (dir);
00146 
00147   if (!has_some_dir)
00148     {
00149       puts ("some-dir not in directory list");
00150       return 1;
00151     }
00152 
00153   if (unlinkat (dir_fd, "some-dir", AT_REMOVEDIR) != 0)
00154     {
00155       puts ("unlinkat failed");
00156       return 1;
00157     }
00158 
00159   close (dir_fd);
00160 
00161   return 0;
00162 }