Mercurial > gnulib
view tests/test-dirent-safer.c @ 40206:770a5696761e
relocatable-prog: Use wrapper-free installation on Mac OS X, take 2.
This approach supports relocatable installation of shared libraries
which depend on other shared libraries from the same package.
* m4/relocatable.m4 (gl_RELOCATABLE_BODY): Determine use_macos_tools.
If use_macos_tools is true, use reloc-ldflags and set LIBTOOL to be a
wrapper around the original LIBTOOL.
* build-aux/reloc-ldflags: Add support for Mac OS X, which uses the
token '@loader_path' instead of '$ORIGIN'.
* build-aux/libtool-reloc: New file.
* modules/relocatable-prog (Files): Add it.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes. Document the need to set the *_LDFLAGS of libraries.
RELOCATABLE_LIBRARY_PATH and RELOCATABLE_CONFIG_H_DIR should be set in
Makefile.am, not in configure.ac.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 04 Mar 2019 17:25:09 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
/* Test that directory streams leave standard fds alone. Copyright (C) 2009-2019 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 <https://www.gnu.org/licenses/>. */ /* Written by Eric Blake <ebb9@byu.net>, 2009. */ #include <config.h> #include "dirent--.h" #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <unistd.h> /* This test intentionally closes stderr. So, we arrange to have fd 10 (outside the range of interesting fd's during the test) set up to duplicate the original stderr. */ #define BACKUP_STDERR_FILENO 10 #define ASSERT_STREAM myerr #include "macros.h" static FILE *myerr; int main (void) { int i; DIR *dp; /* The dirent-safer module works without the use of fdopendir (which would also pull in fchdir and openat); but if those modules were also used, we ensure that they are safe. In particular, the gnulib version of fdopendir is unable to guarantee that dirfd(fdopendir(fd))==fd, but we can at least guarantee that if they are not equal, the fd returned by dirfd is safe. */ #if HAVE_FDOPENDIR || GNULIB_TEST_FDOPENDIR int dfd; #endif /* We close fd 2 later, so save it in fd 10. */ if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL) return 2; #if HAVE_FDOPENDIR || GNULIB_TEST_FDOPENDIR dfd = open (".", O_RDONLY); ASSERT (STDERR_FILENO < dfd); #endif /* Four iterations, with progressively more standard descriptors closed. */ for (i = -1; i <= STDERR_FILENO; i++) { if (0 <= i) ASSERT (close (i) == 0); dp = opendir ("."); ASSERT (dp); ASSERT (dirfd (dp) == -1 || STDERR_FILENO < dirfd (dp)); ASSERT (closedir (dp) == 0); #if HAVE_FDOPENDIR || GNULIB_TEST_FDOPENDIR { int fd = fcntl (dfd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1); ASSERT (STDERR_FILENO < fd); dp = fdopendir (fd); ASSERT (dp); ASSERT (dirfd (dp) == -1 || STDERR_FILENO < dirfd (dp)); ASSERT (closedir (dp) == 0); errno = 0; ASSERT (close (fd) == -1); ASSERT (errno == EBADF); } #endif } #if HAVE_FDOPENDIR || GNULIB_TEST_FDOPENDIR ASSERT (close (dfd) == 0); #endif return 0; }