d7f69e16f1
This stripping is contolled by a new boolean parameter. When the parameter is true, it means that the caller does not care about the distinction between initrd and real root, and wants to act on both rd-dot-prefixed and unprefixed parameters in the initramfs, and only on the unprefixed parameters in real root. If the parameter is false, behaviour is the same as before. Changes by caller: log.c (systemd.log_*): changed to accept rd-dot-prefix params pid1: no change, custom logic cryptsetup-generator: no change, still accepts rd-dot-prefix params debug-generator: no change, does not accept rd-dot-prefix params fsck: changed to accept rd-dot-prefix params fstab-generator: no change, custom logic gpt-auto-generator: no change, custom logic hibernate-resume-generator: no change, does not accept rd-dot-prefix params journald: changed to accept rd-dot-prefix params modules-load: no change, still accepts rd-dot-prefix params quote-check: no change, does not accept rd-dot-prefix params udevd: no change, still accepts rd-dot-prefix params I added support for "rd." params in the three cases where I think it's useful: logging, fsck options, journald forwarding options.
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/***
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This file is part of systemd.
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Copyright 2014 Ivan Shapovalov
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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 <stdio.h>
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#include "alloc-util.h"
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#include "fstab-util.h"
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#include "log.h"
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#include "mkdir.h"
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#include "proc-cmdline.h"
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#include "special.h"
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#include "string-util.h"
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#include "unit-name.h"
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#include "util.h"
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static const char *arg_dest = "/tmp";
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static char *arg_resume_dev = NULL;
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static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
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if (streq(key, "resume") && value) {
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free(arg_resume_dev);
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arg_resume_dev = fstab_node_to_udev_node(value);
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if (!arg_resume_dev)
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return log_oom();
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}
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return 0;
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}
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static int process_resume(void) {
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_cleanup_free_ char *name = NULL, *lnk = NULL;
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int r;
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if (!arg_resume_dev)
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return 0;
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r = unit_name_from_path_instance("systemd-hibernate-resume", arg_resume_dev, ".service", &name);
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if (r < 0)
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return log_error_errno(r, "Failed to generate unit name: %m");
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lnk = strjoin(arg_dest, "/" SPECIAL_SYSINIT_TARGET ".wants/", name, NULL);
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if (!lnk)
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return log_oom();
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mkdir_parents_label(lnk, 0755);
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if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-hibernate-resume@.service", lnk) < 0)
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return log_error_errno(errno, "Failed to create symlink %s: %m", lnk);
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return 0;
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}
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int main(int argc, char *argv[]) {
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int r = 0;
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if (argc > 1 && argc != 4) {
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log_error("This program takes three or no arguments.");
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return EXIT_FAILURE;
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}
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if (argc > 1)
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arg_dest = argv[1];
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log_set_target(LOG_TARGET_SAFE);
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log_parse_environment();
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log_open();
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umask(0022);
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/* Don't even consider resuming outside of initramfs. */
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if (!in_initrd())
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return EXIT_SUCCESS;
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r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false);
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if (r < 0)
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log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
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r = process_resume();
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free(arg_resume_dev);
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return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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