diff options
Diffstat (limited to 'gnulib/tests/test-fdopendir.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/tests/test-fdopendir.c | 78 |
2 files changed, 78 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/tests/test-fdopendir.c b/gnulib/tests/test-fdopendir.c new file mode 100644 index 0000000..b578a5c --- /dev/null +++ b/gnulib/tests/test-fdopendir.c @@ -0,0 +1,78 @@ +/* Test opening a directory stream from a file descriptor. + Copyright (C) 2009-2011 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* Written by Eric Blake <ebb9@byu.net>, 2009. */ + +#include <config.h> + +#include <dirent.h> + +#include "signature.h" +SIGNATURE_CHECK (fdopendir, DIR *, (int)); + +#include <errno.h> +#include <fcntl.h> +#include <unistd.h> + +#include "progname.h" +#include "macros.h" + +int +main (int argc _GL_UNUSED, char *argv[]) +{ + DIR *d; + int fd; + + set_program_name (argv[0]); + + /* A non-directory cannot be turned into a directory stream. */ + fd = open ("test-fdopendir.tmp", O_RDONLY | O_CREAT, 0600); + ASSERT (0 <= fd); + errno = 0; + ASSERT (fdopendir (fd) == NULL); + ASSERT (errno == ENOTDIR); + ASSERT (close (fd) == 0); + ASSERT (unlink ("test-fdopendir.tmp") == 0); + + /* A bad fd cannot be turned into a stream. */ + { + errno = 0; + ASSERT (fdopendir (-1) == NULL); + ASSERT (errno == EBADF); + } + { + errno = 0; + ASSERT (fdopendir (99) == NULL); + ASSERT (errno == EBADF); + } + + /* This should work. */ + fd = open (".", O_RDONLY); + ASSERT (0 <= fd); + d = fdopendir (fd); + /* We know that fd is now out of our reach, but it is not specified + whether it is closed now or at the closedir. We also can't + guarantee whether dirfd returns fd, some other descriptor, or + -1. */ + ASSERT (d); + ASSERT (closedir (d) == 0); + /* Now we can guarantee that fd must be closed. */ + errno = 0; + ASSERT (dup2 (fd, fd) == -1); + ASSERT (errno == EBADF); + + return 0; +} |