2017-11-18 17:09:20 +01:00
|
|
|
/* SPDX-License-Identifier: LGPL-2.1+ */
|
2010-10-19 21:19:12 +02:00
|
|
|
/***
|
|
|
|
This file is part of systemd.
|
|
|
|
|
|
|
|
Copyright 2010 Lennart Poettering
|
|
|
|
|
|
|
|
systemd is free software; you can redistribute it and/or modify it
|
2012-04-12 00:20:58 +02:00
|
|
|
under the terms of the GNU Lesser General Public License as published by
|
|
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
2010-10-19 21:19:12 +02:00
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
systemd 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
|
2012-04-12 00:20:58 +02:00
|
|
|
Lesser General Public License for more details.
|
2010-10-19 21:19:12 +02:00
|
|
|
|
2012-04-12 00:20:58 +02:00
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
2010-10-19 21:19:12 +02:00
|
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
***/
|
|
|
|
|
|
|
|
#include <errno.h>
|
2015-10-24 22:58:24 +02:00
|
|
|
#include <stdbool.h>
|
|
|
|
#include <stdio.h>
|
2015-05-31 23:55:55 +02:00
|
|
|
#include <sys/prctl.h>
|
2015-10-24 22:58:24 +02:00
|
|
|
#include <unistd.h>
|
2010-10-19 21:19:12 +02:00
|
|
|
|
2015-11-16 22:09:36 +01:00
|
|
|
#include "proc-cmdline.h"
|
2015-04-10 19:10:00 +02:00
|
|
|
#include "process-util.h"
|
2015-05-31 23:55:55 +02:00
|
|
|
#include "signal-util.h"
|
2015-10-24 22:58:24 +02:00
|
|
|
#include "string-util.h"
|
|
|
|
#include "util.h"
|
2010-10-19 21:19:12 +02:00
|
|
|
|
|
|
|
static bool arg_skip = false;
|
|
|
|
static bool arg_force = false;
|
|
|
|
|
2016-10-22 20:24:52 +02:00
|
|
|
static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
|
2014-03-06 17:05:55 +01:00
|
|
|
|
util-lib: various improvements to kernel command line parsing
This improves kernel command line parsing in a number of ways:
a) An kernel option "foo_bar=xyz" is now considered equivalent to
"foo-bar-xyz", i.e. when comparing kernel command line option names "-" and
"_" are now considered equivalent (this only applies to the option names
though, not the option values!). Most of our kernel options used "-" as word
separator in kernel command line options so far, but some used "_". With
this change, which was a source of confusion for users (well, at least of
one user: myself, I just couldn't remember that it's systemd.debug-shell,
not systemd.debug_shell). Considering both as equivalent is inspired how
modern kernel module loading normalizes all kernel module names to use
underscores now too.
b) All options previously using a dash for separating words in kernel command
line options now use an underscore instead, in all documentation and in
code. Since a) has been implemented this should not create any compatibility
problems, but normalizes our documentation and our code.
c) All kernel command line options which take booleans (or are boolean-like)
have been reworked so that "foobar" (without argument) is now equivalent to
"foobar=1" (but not "foobar=0"), thus normalizing the handling of our
boolean arguments. Specifically this means systemd.debug-shell and
systemd_debug_shell=1 are now entirely equivalent.
d) All kernel command line options which take an argument, and where no
argument is specified will now result in a log message. e.g. passing just
"systemd.unit" will no result in a complain that it needs an argument. This
is implemented in the proc_cmdline_missing_value() function.
e) There's now a call proc_cmdline_get_bool() similar to proc_cmdline_get_key()
that parses booleans (following the logic explained in c).
f) The proc_cmdline_parse() call's boolean argument has been replaced by a new
flags argument that takes a common set of bits with proc_cmdline_get_key().
g) All kernel command line APIs now begin with the same "proc_cmdline_" prefix.
h) There are now tests for much of this. Yay!
2016-12-12 18:29:15 +01:00
|
|
|
if (streq(key, "quotacheck.mode")) {
|
|
|
|
|
|
|
|
if (proc_cmdline_value_missing(key, value))
|
|
|
|
return 0;
|
2014-03-06 17:05:55 +01:00
|
|
|
|
|
|
|
if (streq(value, "auto"))
|
|
|
|
arg_force = arg_skip = false;
|
|
|
|
else if (streq(value, "force"))
|
|
|
|
arg_force = true;
|
|
|
|
else if (streq(value, "skip"))
|
|
|
|
arg_skip = true;
|
|
|
|
else
|
2014-06-19 16:55:20 +02:00
|
|
|
log_warning("Invalid quotacheck.mode= parameter '%s'. Ignoring.", value);
|
|
|
|
}
|
2014-03-06 17:05:55 +01:00
|
|
|
|
2017-10-03 10:41:51 +02:00
|
|
|
#if HAVE_SYSV_COMPAT
|
2014-03-06 17:05:55 +01:00
|
|
|
else if (streq(key, "forcequotacheck") && !value) {
|
|
|
|
log_warning("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line.");
|
2014-02-16 00:08:59 +01:00
|
|
|
arg_force = true;
|
2010-10-19 21:19:12 +02:00
|
|
|
}
|
2014-02-16 00:08:59 +01:00
|
|
|
#endif
|
|
|
|
|
2010-10-19 21:19:12 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void test_files(void) {
|
2014-06-19 16:55:20 +02:00
|
|
|
|
2017-10-03 10:41:51 +02:00
|
|
|
#if HAVE_SYSV_COMPAT
|
2013-01-04 22:00:46 +01:00
|
|
|
if (access("/forcequotacheck", F_OK) >= 0) {
|
|
|
|
log_error("Please pass 'quotacheck.mode=force' on the kernel command line rather than creating /forcequotacheck on the root file system.");
|
2010-10-19 21:19:12 +02:00
|
|
|
arg_force = true;
|
2013-01-04 22:00:46 +01:00
|
|
|
}
|
2010-10-19 21:19:12 +02:00
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
int main(int argc, char *argv[]) {
|
2013-05-06 21:15:38 +02:00
|
|
|
|
2010-10-19 21:19:12 +02:00
|
|
|
static const char * const cmdline[] = {
|
2013-05-06 21:15:38 +02:00
|
|
|
QUOTACHECK,
|
2010-10-19 21:19:12 +02:00
|
|
|
"-anug",
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
|
|
|
pid_t pid;
|
2014-11-06 21:53:34 +01:00
|
|
|
int r;
|
2010-10-19 21:19:12 +02:00
|
|
|
|
|
|
|
if (argc > 1) {
|
|
|
|
log_error("This program takes no arguments.");
|
|
|
|
return EXIT_FAILURE;
|
|
|
|
}
|
|
|
|
|
2012-01-12 05:09:06 +01:00
|
|
|
log_set_target(LOG_TARGET_AUTO);
|
2010-10-19 21:19:12 +02:00
|
|
|
log_parse_environment();
|
|
|
|
log_open();
|
|
|
|
|
2011-08-01 20:52:18 +02:00
|
|
|
umask(0022);
|
|
|
|
|
util-lib: various improvements to kernel command line parsing
This improves kernel command line parsing in a number of ways:
a) An kernel option "foo_bar=xyz" is now considered equivalent to
"foo-bar-xyz", i.e. when comparing kernel command line option names "-" and
"_" are now considered equivalent (this only applies to the option names
though, not the option values!). Most of our kernel options used "-" as word
separator in kernel command line options so far, but some used "_". With
this change, which was a source of confusion for users (well, at least of
one user: myself, I just couldn't remember that it's systemd.debug-shell,
not systemd.debug_shell). Considering both as equivalent is inspired how
modern kernel module loading normalizes all kernel module names to use
underscores now too.
b) All options previously using a dash for separating words in kernel command
line options now use an underscore instead, in all documentation and in
code. Since a) has been implemented this should not create any compatibility
problems, but normalizes our documentation and our code.
c) All kernel command line options which take booleans (or are boolean-like)
have been reworked so that "foobar" (without argument) is now equivalent to
"foobar=1" (but not "foobar=0"), thus normalizing the handling of our
boolean arguments. Specifically this means systemd.debug-shell and
systemd_debug_shell=1 are now entirely equivalent.
d) All kernel command line options which take an argument, and where no
argument is specified will now result in a log message. e.g. passing just
"systemd.unit" will no result in a complain that it needs an argument. This
is implemented in the proc_cmdline_missing_value() function.
e) There's now a call proc_cmdline_get_bool() similar to proc_cmdline_get_key()
that parses booleans (following the logic explained in c).
f) The proc_cmdline_parse() call's boolean argument has been replaced by a new
flags argument that takes a common set of bits with proc_cmdline_get_key().
g) All kernel command line APIs now begin with the same "proc_cmdline_" prefix.
h) There are now tests for much of this. Yay!
2016-12-12 18:29:15 +01:00
|
|
|
r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
|
2014-11-06 21:53:34 +01:00
|
|
|
if (r < 0)
|
2014-11-28 13:19:16 +01:00
|
|
|
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
|
2014-11-06 21:53:34 +01:00
|
|
|
|
2010-10-19 21:19:12 +02:00
|
|
|
test_files();
|
|
|
|
|
|
|
|
if (!arg_force) {
|
|
|
|
if (arg_skip)
|
2013-05-06 21:15:38 +02:00
|
|
|
return EXIT_SUCCESS;
|
2010-10-19 21:19:12 +02:00
|
|
|
|
2011-03-25 05:07:20 +01:00
|
|
|
if (access("/run/systemd/quotacheck", F_OK) < 0)
|
2013-05-06 21:15:38 +02:00
|
|
|
return EXIT_SUCCESS;
|
2010-10-19 21:19:12 +02:00
|
|
|
}
|
|
|
|
|
2017-12-22 13:08:14 +01:00
|
|
|
r = safe_fork("(quotacheck)", FORK_RESET_SIGNALS|FORK_DEATHSIG, &pid);
|
|
|
|
if (r < 0) {
|
|
|
|
log_error_errno(r, "fork(): %m");
|
2016-12-12 18:43:38 +01:00
|
|
|
goto finish;
|
|
|
|
}
|
2017-12-22 13:08:14 +01:00
|
|
|
if (r == 0) {
|
2015-05-31 23:55:55 +02:00
|
|
|
|
2010-10-19 21:19:12 +02:00
|
|
|
/* Child */
|
2015-05-31 23:55:55 +02:00
|
|
|
|
2010-10-19 21:19:12 +02:00
|
|
|
execv(cmdline[0], (char**) cmdline);
|
2017-12-22 13:24:40 +01:00
|
|
|
_exit(EXIT_FAILURE); /* Operational error */
|
2010-10-19 21:19:12 +02:00
|
|
|
}
|
|
|
|
|
2014-11-29 16:28:01 +01:00
|
|
|
r = wait_for_terminate_and_warn("quotacheck", pid, true);
|
2014-11-06 21:53:34 +01:00
|
|
|
|
2016-12-12 18:43:38 +01:00
|
|
|
finish:
|
2014-11-06 21:53:34 +01:00
|
|
|
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
|
2010-10-19 21:19:12 +02:00
|
|
|
}
|