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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/boot/bless-boot-generator.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/boot/bless-boot-generator.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/boot/bless-boot-generator.c b/src/boot/bless-boot-generator.c new file mode 100644 index 0000000..6adef5b --- /dev/null +++ b/src/boot/bless-boot-generator.c @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <unistd.h> + +#include "efi-loader.h" +#include "generator.h" +#include "log.h" +#include "mkdir.h" +#include "special.h" +#include "string-util.h" +#include "virt.h" + +/* This generator pulls systemd-bless-boot.service into the initial transaction if the "LoaderBootCountPath" + * EFI variable is set, i.e. the system boots up with boot counting in effect, which means we should mark the + * boot as "good" if we manage to boot up far enough. */ + +static int run(const char *dest, const char *dest_early, const char *dest_late) { + + if (in_initrd() > 0) { + log_debug("Skipping generator, running in the initrd."); + return 0; + } + + if (detect_container() > 0) { + log_debug("Skipping generator, running in a container."); + return 0; + } + + if (!is_efi_boot()) { + log_debug("Skipping generator, not an EFI boot."); + return 0; + } + + if (access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderBootCountPath)), F_OK) < 0) { + + if (errno == ENOENT) { + log_debug_errno(errno, "Skipping generator, not booted with boot counting in effect."); + return 0; + } + + return log_error_errno(errno, "Failed to check if LoaderBootCountPath EFI variable exists: %m"); + } + + /* We pull this in from basic.target so that it ends up in all "regular" boot ups, but not in + * rescue.target or even emergency.target. */ + const char *p = strjoina(dest_early, "/" SPECIAL_BASIC_TARGET ".wants/systemd-bless-boot.service"); + (void) mkdir_parents(p, 0755); + if (symlink(SYSTEM_DATA_UNIT_DIR "/systemd-bless-boot.service", p) < 0) + return log_error_errno(errno, "Failed to create symlink '%s': %m", p); + + return 0; +} + +DEFINE_MAIN_GENERATOR_FUNCTION(run); |