![Lennart Poettering](/assets/img/avatar_default.png)
log.h really should only include the bare minimum of other headers, as it is really pulled into pretty much everything else and already in itself one of the most basic pieces of code we have. Let's hence drop inclusion of: 1. sd-id128.h because it's entirely unneeded in current log.h 2. errno.h, dito. 3. sys/signalfd.h which we can replace by a simple struct forward declaration 4. process-util.h which was needed for getpid_cached() which we now hide in a funciton log_emergency_level() instead, which nicely abstracts the details away. 5. sys/socket.h which was needed for struct iovec, but a simple struct forward declaration suffices for that too. Ultimately this actually makes our source tree larger (since users of the functionality above must now include it themselves, log.h won't do that for them), but I think it helps to untangle our web of includes a tiny bit. (Background: I'd like to isolate the generic bits of src/basic/ enough so that we can do a git submodule import into casync for it)
110 lines
3.5 KiB
C
110 lines
3.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "log.h"
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#include "namespace.h"
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int main(int argc, char *argv[]) {
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const char * const writable[] = {
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"/home",
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"-/home/lennart/projects/foobar", /* this should be masked automatically */
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NULL
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};
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const char * const readonly[] = {
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/* "/", */
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/* "/usr", */
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"/boot",
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"/lib",
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"/usr/lib",
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"-/lib64",
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"-/usr/lib64",
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NULL
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};
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const char *inaccessible[] = {
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"/home/lennart/projects",
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NULL
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};
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static const NamespaceInfo ns_info = {
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.private_dev = true,
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.protect_control_groups = true,
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.protect_kernel_tunables = true,
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.protect_kernel_modules = true,
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};
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char *root_directory;
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char *projects_directory;
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int r;
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char tmp_dir[] = "/tmp/systemd-private-XXXXXX",
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var_tmp_dir[] = "/var/tmp/systemd-private-XXXXXX";
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log_set_max_level(LOG_DEBUG);
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assert_se(mkdtemp(tmp_dir));
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assert_se(mkdtemp(var_tmp_dir));
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root_directory = getenv("TEST_NS_CHROOT");
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projects_directory = getenv("TEST_NS_PROJECTS");
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if (projects_directory)
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inaccessible[0] = projects_directory;
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log_info("Inaccessible directory: '%s'", inaccessible[0]);
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if (root_directory)
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log_info("Chroot: '%s'", root_directory);
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else
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log_info("Not chrooted");
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r = setup_namespace(root_directory,
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NULL,
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&ns_info,
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(char **) writable,
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(char **) readonly,
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(char **) inaccessible,
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NULL,
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&(BindMount) { .source = (char*) "/usr/bin", .destination = (char*) "/etc/systemd", .read_only = true }, 1,
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tmp_dir,
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var_tmp_dir,
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PROTECT_HOME_NO,
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PROTECT_SYSTEM_NO,
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0,
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0);
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if (r < 0) {
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log_error_errno(r, "Failed to setup namespace: %m");
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log_info("Usage:\n"
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" sudo TEST_NS_PROJECTS=/home/lennart/projects ./test-ns\n"
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" sudo TEST_NS_CHROOT=/home/alban/debian-tree TEST_NS_PROJECTS=/home/alban/debian-tree/home/alban/Documents ./test-ns");
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return 1;
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}
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execl("/bin/sh", "/bin/sh", NULL);
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log_error_errno(errno, "execl(): %m");
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return 1;
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}
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