diff options
Diffstat (limited to 'src/resume-generator')
| l--------- | src/resume-generator/Makefile | 1 | ||||
| -rw-r--r-- | src/resume-generator/resume-generator.c | 95 |
2 files changed, 96 insertions, 0 deletions
diff --git a/src/resume-generator/Makefile b/src/resume-generator/Makefile new file mode 120000 index 0000000000..d0b0e8e008 --- /dev/null +++ b/src/resume-generator/Makefile @@ -0,0 +1 @@ +../Makefile
\ No newline at end of file diff --git a/src/resume-generator/resume-generator.c b/src/resume-generator/resume-generator.c new file mode 100644 index 0000000000..f40721662e --- /dev/null +++ b/src/resume-generator/resume-generator.c @@ -0,0 +1,95 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of systemd. + + Copyright 2014 Ivan Shapovalov + + systemd is free software; you can redistribute it and/or modify it + 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 + (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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <stdio.h> +#include <errno.h> + +#include "log.h" +#include "util.h" +#include "special.h" +#include "mkdir.h" +#include "unit-name.h" + +static const char *arg_dest = "/tmp"; +static char *arg_resume_dev = NULL; + +static int parse_proc_cmdline_item(const char *key, const char *value) { + if (streq(key, "resume") && value) { + free(arg_resume_dev); + arg_resume_dev = fstab_node_to_udev_node(value); + if (!arg_resume_dev) + return log_oom(); + } + + return 0; +} + +static int process_resume(void) { + _cleanup_free_ char *name = NULL, *lnk = NULL; + + name = unit_name_from_path_instance("systemd-hibernate-resume", arg_resume_dev, ".service"); + if (!name) + return log_oom(); + + lnk = strjoin(arg_dest, "/" SPECIAL_SYSINIT_TARGET ".wants/", name, NULL); + if (!lnk) + return log_oom(); + + mkdir_parents_label(lnk, 0755); + if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-hibernate-resume@.service", lnk) < 0) { + log_error("Failed to create symlink %s: %m", lnk); + return -errno; + } + + return 0; +} + +int main(int argc, char *argv[]) { + int r = 0; + + if (argc > 1 && argc != 4) { + log_error("This program takes three or no arguments."); + return EXIT_FAILURE; + } + + if (argc > 1) + arg_dest = argv[1]; + + log_set_target(LOG_TARGET_SAFE); + log_parse_environment(); + log_open(); + + umask(0022); + + /* Don't even consider resuming outside of initramfs. */ + if (!in_initrd()) + return EXIT_SUCCESS; + + if (parse_proc_cmdline(parse_proc_cmdline_item) < 0) + return EXIT_FAILURE; + + if (arg_resume_dev != NULL) + r = process_resume(); + + free(arg_resume_dev); + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} |