157 lines
4.6 KiB
C
157 lines
4.6 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 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 <unistd.h>
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#include <stdlib.h>
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#include "efivars.h"
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#include "path-util.h"
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#include "util.h"
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#include "mkdir.h"
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#include "unit-name.h"
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#include "virt.h"
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#include "generator.h"
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#include "special.h"
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static const char *arg_dest = "/tmp";
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int main(int argc, char *argv[]) {
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_cleanup_free_ char *what = NULL;
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_cleanup_fclose_ FILE *f = NULL;
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int r = EXIT_SUCCESS;
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sd_id128_t id;
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char *name;
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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[3];
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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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if (in_initrd()) {
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log_debug("In initrd, exiting.");
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return EXIT_SUCCESS;
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}
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if (detect_container(NULL) > 0) {
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log_debug("In a container, exiting.");
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return EXIT_SUCCESS;
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}
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if (!is_efi_boot()) {
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log_debug("Not an EFI boot, exiting.");
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return EXIT_SUCCESS;
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}
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if (path_is_mount_point("/boot", true) <= 0 &&
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dir_is_empty("/boot") <= 0) {
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log_debug("/boot already populated, exiting.");
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return EXIT_SUCCESS;
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}
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r = efi_loader_get_device_part_uuid(&id);
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if (r == -ENOENT) {
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log_debug("EFI loader partition unknown, exiting.");
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return EXIT_SUCCESS;
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} else if (r < 0) {
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log_error("Failed to read ESP partition UUID: %s", strerror(-r));
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return EXIT_FAILURE;
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}
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name = strappenda(arg_dest, "/boot.mount");
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f = fopen(name, "wxe");
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if (!f) {
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log_error("Failed to create mount unit file %s: %m", name);
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return EXIT_FAILURE;
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}
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r = asprintf(&what,
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"/dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
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SD_ID128_FORMAT_VAL(id));
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if (r < 0) {
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log_oom();
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return EXIT_FAILURE;
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}
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fprintf(f,
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"# Automatially generated by systemd-efi-boot-generator\n\n"
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"[Unit]\n"
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"Description=EFI System Partition\n"
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"Documentation=man:systemd-efi-boot-generator(8)\n");
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r = generator_write_fsck_deps(f, arg_dest, what, "/boot", "vfat");
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if (r < 0)
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return EXIT_FAILURE;
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fprintf(f,
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"\n"
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"[Mount]\n"
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"What=%s\n"
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"Where=/boot\n"
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"Type=vfat\n"
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"Options=umask=0077,noauto\n",
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what);
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fflush(f);
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if (ferror(f)) {
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log_error("Failed to write mount unit file: %m");
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return EXIT_FAILURE;
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}
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name = strappenda(arg_dest, "/boot.automount");
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fclose(f);
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f = fopen(name, "wxe");
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if (!f) {
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log_error("Failed to create automount unit file %s: %m", name);
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return EXIT_FAILURE;
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}
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fputs("# Automatially generated by systemd-efi-boot-generator\n\n"
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"[Unit]\n"
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"Description=EFI System Partition Automount\n\n"
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"[Automount]\n"
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"Where=/boot\n", f);
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fflush(f);
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if (ferror(f)) {
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log_error("Failed to write automount unit file: %m");
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return EXIT_FAILURE;
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}
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name = strappenda(arg_dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/boot.automount");
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mkdir_parents(name, 0755);
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if (symlink("../boot.automount", name) < 0) {
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log_error("Failed to create symlink %s: %m", name);
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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