63c372cb9d
After all it is now much more like strjoin() than strappend(). At the same time, add support for NULL sentinels, even if they are normally not necessary.
157 lines
4.7 KiB
C
157 lines
4.7 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_errno(r, "Failed to read ESP partition UUID: %m");
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return EXIT_FAILURE;
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}
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name = strjoina(arg_dest, "/boot.mount");
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f = fopen(name, "wxe");
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if (!f) {
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log_error_errno(errno, "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_errno(errno, "Failed to write mount unit file: %m");
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return EXIT_FAILURE;
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}
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name = strjoina(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_errno(errno, "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_errno(errno, "Failed to write automount unit file: %m");
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return EXIT_FAILURE;
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}
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name = strjoina(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_errno(errno, "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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