53aa0d02ad
In various circumstances, overriding the kernel commandline can be inconvenient. People have different bootloaders, and e.g. the grub config can be pretty scary. grubby helps, but it isn't always available. This option adds an alternative mechanism that can quite convenient on EFI systems. cmdline settings have higher priority, because they can be (usually) changed on the bootloader prompt. $SYSTEMD_EFI_OPTIONS can be used to override, same as $SYSTEMD_PROC_CMDLINE.
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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#if !ENABLE_EFI
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# include <errno.h>
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#endif
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "sd-id128.h"
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#include "efi/loader-features.h"
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#include "time-util.h"
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#define EFI_VENDOR_LOADER SD_ID128_MAKE(4a,67,b0,82,0a,4c,41,cf,b6,c7,44,0b,29,bb,8c,4f)
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#define EFI_VENDOR_GLOBAL SD_ID128_MAKE(8b,e4,df,61,93,ca,11,d2,aa,0d,00,e0,98,03,2b,8c)
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#define EFI_VENDOR_SYSTEMD SD_ID128_MAKE(8c,f2,64,4b,4b,0b,42,8f,93,87,6d,87,60,50,dc,67)
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#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
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#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
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#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
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#if ENABLE_EFI
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char* efi_variable_path(sd_id128_t vendor, const char *name);
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int efi_get_variable(sd_id128_t vendor, const char *name, uint32_t *attribute, void **value, size_t *size);
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int efi_get_variable_string(sd_id128_t vendor, const char *name, char **p);
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int efi_set_variable(sd_id128_t vendor, const char *name, const void *value, size_t size);
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int efi_set_variable_string(sd_id128_t vendor, const char *name, const char *p);
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int efi_systemd_options_variable(char **line);
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#else
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static inline char* efi_variable_path(sd_id128_t vendor, const char *name) {
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return NULL;
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}
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static inline int efi_get_variable(sd_id128_t vendor, const char *name, uint32_t *attribute, void **value, size_t *size) {
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return -EOPNOTSUPP;
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}
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static inline int efi_get_variable_string(sd_id128_t vendor, const char *name, char **p) {
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return -EOPNOTSUPP;
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}
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static inline int efi_set_variable(sd_id128_t vendor, const char *name, const void *value, size_t size) {
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return -EOPNOTSUPP;
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}
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static inline int efi_set_variable_string(sd_id128_t vendor, const char *name, const char *p) {
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return -EOPNOTSUPP;
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}
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static inline int efi_systemd_options_variable(char **line) {
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return -ENODATA;
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}
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#endif
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