/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2013 Lennart Poettering 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 <unistd.h> #include <stdlib.h> #include "efivars.h" #include "path-util.h" #include "util.h" #include "mkdir.h" #include "unit-name.h" #include "virt.h" #include "generator.h" #include "special.h" static const char *arg_dest = "/tmp"; int main(int argc, char *argv[]) { _cleanup_free_ char *what = NULL; _cleanup_fclose_ FILE *f = NULL; int r = EXIT_SUCCESS; sd_id128_t id; char *name; if (argc > 1 && argc != 4) { log_error("This program takes three or no arguments."); return EXIT_FAILURE; } if (argc > 1) arg_dest = argv[3]; log_set_target(LOG_TARGET_SAFE); log_parse_environment(); log_open(); umask(0022); if (in_initrd()) { log_debug("In initrd, exiting."); return EXIT_SUCCESS; } if (detect_container(NULL) > 0) { log_debug("In a container, exiting."); return EXIT_SUCCESS; } if (!is_efi_boot()) { log_debug("Not an EFI boot, exiting."); return EXIT_SUCCESS; } if (path_is_mount_point("/boot", true) <= 0 && dir_is_empty("/boot") <= 0) { log_debug("/boot already populated, exiting."); return EXIT_SUCCESS; } r = efi_loader_get_device_part_uuid(&id); if (r == -ENOENT) { log_debug("EFI loader partition unknown, exiting."); return EXIT_SUCCESS; } else if (r < 0) { log_error("Failed to read ESP partition UUID: %s", strerror(-r)); return EXIT_FAILURE; } name = strappenda(arg_dest, "/boot.mount"); f = fopen(name, "wxe"); if (!f) { log_error("Failed to create mount unit file %s: %m", name); return EXIT_FAILURE; } r = asprintf(&what, "/dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", SD_ID128_FORMAT_VAL(id)); if (r < 0) { log_oom(); return EXIT_FAILURE; } fprintf(f, "# Automatially generated by systemd-efi-boot-generator\n\n" "[Unit]\n" "Description=EFI System Partition\n" "Documentation=man:systemd-efi-boot-generator(8)\n"); r = generator_write_fsck_deps(f, arg_dest, what, "/boot", "vfat"); if (r < 0) return EXIT_FAILURE; fprintf(f, "\n" "[Mount]\n" "What=%s\n" "Where=/boot\n" "Type=vfat\n" "Options=umask=0077,noauto\n", what); fflush(f); if (ferror(f)) { log_error("Failed to write mount unit file: %m"); return EXIT_FAILURE; } name = strappenda(arg_dest, "/boot.automount"); fclose(f); f = fopen(name, "wxe"); if (!f) { log_error("Failed to create automount unit file %s: %m", name); return EXIT_FAILURE; } fputs("# Automatially generated by systemd-efi-boot-generator\n\n" "[Unit]\n" "Description=EFI System Partition Automount\n\n" "[Automount]\n" "Where=/boot\n", f); fflush(f); if (ferror(f)) { log_error("Failed to write automount unit file: %m"); return EXIT_FAILURE; } name = strappenda(arg_dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/boot.automount"); mkdir_parents(name, 0755); if (symlink("../boot.automount", name) < 0) { log_error("Failed to create symlink %s: %m", name); return EXIT_FAILURE; } return EXIT_SUCCESS; }