test/misc/bug-glob1.c

   1 /* Test case for globbing dangling symlink.  By Ulrich Drepper.  */
   2 #include <errno.h>
   3 #include <error.h>
   4 #include <glob.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <unistd.h>
   9
  10
  11 static void prepare (int argc, char *argv[]);
  12 #define PREPARE prepare
  13 static int do_test (void);
  14 #define TEST_FUNCTION do_test ()
  15
  16 #include "../test-skeleton.c"
  17
  18
  19 static char *fname;
  20
  21 static void
  22 prepare (int argc, char *argv[])
  23 {
  24   if (argc < 2)
  25     error (EXIT_FAILURE, 0, "missing argument");
  26
  27   size_t len = strlen (argv[1]);
  28   static const char ext[] = "globXXXXXX";
  29   fname = malloc (len + sizeof (ext));
  30   if (fname == NULL)
  31     error (EXIT_FAILURE, errno, "cannot create temp file");
  32  again:
  33   strcpy (stpcpy (fname, argv[1]), ext);
  34
  35 /* fname = mktemp (fname); */
  36   close(mkstemp(fname));
  37   unlink(fname);
  38
  39   if (fname == NULL || *fname == '\0')
  40     error (EXIT_FAILURE, errno, "cannot create temp file name");
  41   if (symlink ("bug-glob1-does-not-exist", fname) != 0)
  42     {
  43       if (errno == EEXIST)
  44         goto again;
  45
  46       error (EXIT_FAILURE, errno, "cannot create symlink");
  47     }
  48   add_temp_file (fname);
  49 }
  50
  51
  52 static int
  53 do_test (void)
  54 {
  55   glob_t gl;
  56   int retval = 0;
  57   int e;
  58
  59   e = glob (fname, 0, NULL, &gl);
  60   if (e == 0)
  61     {
  62       printf ("glob(\"%s\") succeeded when it should not have\n", fname);
  63       retval = 1;
  64     }
  65   globfree (&gl);
  66
  67   size_t fnamelen = strlen (fname);
  68   char buf[fnamelen + 2];
  69
  70   strcpy (buf, fname);
  71   buf[fnamelen - 1] = '?';
  72   e = glob (buf, 0, NULL, &gl);
  73   if (e == 0)
  74     {
  75       printf ("glob(\"%s\") succeeded when it should not have\n", buf);
  76       retval = 1;
  77     }
  78   globfree (&gl);
  79
  80   strcpy (buf, fname);
  81   buf[fnamelen] = '*';
  82   buf[fnamelen + 1] = '\0';
  83   e = glob (buf, 0, NULL, &gl);
  84   if (e == 0)
  85     {
  86       printf ("glob(\"%s\") succeeded when it should not have\n", buf);
  87       retval = 1;
  88     }
  89   globfree (&gl);
  90
  91   return retval;
  92 }