LCOV - code coverage report
Current view: top level - gltests - test-open.h (source / functions) Hit Total Coverage
Test: GNU Libidn Lines: 34 38 89.5 %
Date: 2015-03-02 11:46:03 Functions: 0 0 -
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* Test of opening a file descriptor.
       2             :    Copyright (C) 2007-2015 Free Software Foundation, Inc.
       3             : 
       4             :    This program is free software: you can redistribute it and/or modify
       5             :    it under the terms of the GNU General Public License as published by
       6             :    the Free Software Foundation; either version 3 of the License, or
       7             :    (at your option) any later version.
       8             : 
       9             :    This program is distributed in the hope that it will be useful,
      10             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :    GNU General Public License for more details.
      13             : 
      14             :    You should have received a copy of the GNU General Public License
      15             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
      16             : 
      17             : /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
      18             : 
      19             : /* Make test_open always inline if we're using Fortify, which defines
      20             :    __always_inline to do that.  Do nothing otherwise.  This works
      21             :    around a glibc bug whereby 'open' cannot be used as a function
      22             :    pointer when _FORTIFY_SOURCE is positive.  */
      23             : 
      24             : #if __GLIBC__ && defined __always_inline
      25             : # define ALWAYS_INLINE __always_inline
      26             : #else
      27             : # define ALWAYS_INLINE
      28             : #endif
      29             : 
      30             : /* This file is designed to test both open(n,buf[,mode]) and
      31             :    openat(AT_FDCWD,n,buf[,mode]).  FUNC is the function to test.
      32             :    Assumes that BASE and ASSERT are already defined, and that
      33             :    appropriate headers are already included.  If PRINT, warn before
      34             :    skipping symlink tests with status 77.  */
      35             : 
      36             : static ALWAYS_INLINE int
      37             : test_open (int (*func) (char const *, int, ...), bool print)
      38             : {
      39             :   int fd;
      40             :   /* Remove anything from prior partial run.  */
      41           1 :   unlink (BASE "file");
      42             : 
      43             :   /* Cannot create directory.  */
      44           1 :   errno = 0;
      45           1 :   ASSERT (func ("nonexist.ent/", O_CREAT | O_RDONLY, 0600) == -1);
      46           1 :   ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
      47             :           || errno == EINVAL);
      48             : 
      49             :   /* Create a regular file.  */
      50           1 :   fd = func (BASE "file", O_CREAT | O_RDONLY, 0600);
      51           1 :   ASSERT (0 <= fd);
      52           1 :   ASSERT (close (fd) == 0);
      53             : 
      54             :   /* Trailing slash handling.  */
      55           1 :   errno = 0;
      56           1 :   ASSERT (func (BASE "file/", O_RDONLY) == -1);
      57           1 :   ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
      58             : 
      59             :   /* Directories cannot be opened for writing.  */
      60           1 :   errno = 0;
      61           1 :   ASSERT (func (".", O_WRONLY) == -1);
      62           1 :   ASSERT (errno == EISDIR || errno == EACCES);
      63             : 
      64             :   /* /dev/null must exist, and be writable.  */
      65           1 :   fd = func ("/dev/null", O_RDONLY);
      66           1 :   ASSERT (0 <= fd);
      67             :   {
      68             :     char c;
      69           1 :     ASSERT (read (fd, &c, 1) == 0);
      70             :   }
      71           1 :   ASSERT (close (fd) == 0);
      72           1 :   fd = func ("/dev/null", O_WRONLY);
      73           1 :   ASSERT (0 <= fd);
      74           1 :   ASSERT (write (fd, "c", 1) == 1);
      75           1 :   ASSERT (close (fd) == 0);
      76             : 
      77             :   /* Although O_NONBLOCK on regular files can be ignored, it must not
      78             :      cause a failure.  */
      79           1 :   fd = func (BASE "file", O_NONBLOCK | O_RDONLY);
      80           1 :   ASSERT (0 <= fd);
      81           1 :   ASSERT (close (fd) == 0);
      82             : 
      83             :   /* Symlink handling, where supported.  */
      84           1 :   if (symlink (BASE "file", BASE "link") != 0)
      85             :     {
      86           0 :       ASSERT (unlink (BASE "file") == 0);
      87           0 :       if (print)
      88           0 :         fputs ("skipping test: symlinks not supported on this file system\n",
      89             :                stderr);
      90           0 :       return 77;
      91             :     }
      92           1 :   errno = 0;
      93           1 :   ASSERT (func (BASE "link/", O_RDONLY) == -1);
      94           1 :   ASSERT (errno == ENOTDIR);
      95           1 :   fd = func (BASE "link", O_RDONLY);
      96           1 :   ASSERT (0 <= fd);
      97           1 :   ASSERT (close (fd) == 0);
      98             : 
      99             :   /* Cleanup.  */
     100           1 :   ASSERT (unlink (BASE "file") == 0);
     101           1 :   ASSERT (unlink (BASE "link") == 0);
     102             : 
     103           1 :   return 0;
     104             : }

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