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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/mman.h>
#include "bootctl.h"
#include "bootctl-util.h"
#include "fileio.h"
#include "os-util.h"
#include "path-util.h"
#include "stat-util.h"
#include "sync-util.h"
#include "utf8.h"
int sync_everything(void) {
int ret = 0, k;
if (arg_esp_path) {
k = syncfs_path(AT_FDCWD, arg_esp_path);
if (k < 0)
ret = log_error_errno(k, "Failed to synchronize the ESP '%s': %m", arg_esp_path);
}
if (arg_xbootldr_path) {
k = syncfs_path(AT_FDCWD, arg_xbootldr_path);
if (k < 0)
ret = log_error_errno(k, "Failed to synchronize $BOOT '%s': %m", arg_xbootldr_path);
}
return ret;
}
const char *get_efi_arch(void) {
/* Detect EFI firmware architecture of the running system. On mixed mode systems, it could be 32bit
* while the kernel is running in 64bit. */
#ifdef __x86_64__
_cleanup_free_ char *platform_size = NULL;
int r;
r = read_one_line_file("/sys/firmware/efi/fw_platform_size", &platform_size);
if (r == -ENOENT)
return EFI_MACHINE_TYPE_NAME;
if (r < 0) {
log_warning_errno(r,
"Error reading EFI firmware word size, assuming machine type '%s': %m",
EFI_MACHINE_TYPE_NAME);
return EFI_MACHINE_TYPE_NAME;
}
if (streq(platform_size, "64"))
return EFI_MACHINE_TYPE_NAME;
if (streq(platform_size, "32"))
return "ia32";
log_warning(
"Unknown EFI firmware word size '%s', using machine type '%s'.",
platform_size,
EFI_MACHINE_TYPE_NAME);
#endif
return EFI_MACHINE_TYPE_NAME;
}
/* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */
int get_file_version(int fd, char **ret) {
struct stat st;
char *buf;
const char *s, *e;
char *x = NULL;
int r;
assert(fd >= 0);
assert(ret);
if (fstat(fd, &st) < 0)
return log_error_errno(errno, "Failed to stat EFI binary: %m");
r = stat_verify_regular(&st);
if (r < 0)
return log_error_errno(r, "EFI binary is not a regular file: %m");
if (st.st_size < 27 || file_offset_beyond_memory_size(st.st_size)) {
*ret = NULL;
return 0;
}
buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (buf == MAP_FAILED)
return log_error_errno(errno, "Failed to memory map EFI binary: %m");
s = mempmem_safe(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
if (!s) {
r = -ESRCH;
goto finish;
}
e = memmem_safe(s, st.st_size - (s - buf), " ####", 5);
if (!e || e - s < 3) {
r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string.");
goto finish;
}
x = strndup(s, e - s);
if (!x) {
r = log_oom();
goto finish;
}
r = 1;
finish:
(void) munmap(buf, st.st_size);
if (r >= 0)
*ret = x;
return r;
}
int settle_entry_token(void) {
int r;
switch (arg_entry_token_type) {
case ARG_ENTRY_TOKEN_AUTO: {
_cleanup_free_ char *buf = NULL, *p = NULL;
p = path_join(arg_root, etc_kernel(), "entry-token");
if (!p)
return log_oom();
r = read_one_line_file(p, &buf);
if (r < 0 && r != -ENOENT)
return log_error_errno(r, "Failed to read %s: %m", p);
if (!isempty(buf)) {
free_and_replace(arg_entry_token, buf);
arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL;
} else if (sd_id128_is_null(arg_machine_id)) {
_cleanup_free_ char *id = NULL, *image_id = NULL;
r = parse_os_release(arg_root,
"IMAGE_ID", &image_id,
"ID", &id);
if (r < 0)
return log_error_errno(r, "Failed to load /etc/os-release: %m");
if (!isempty(image_id)) {
free_and_replace(arg_entry_token, image_id);
arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID;
} else if (!isempty(id)) {
free_and_replace(arg_entry_token, id);
arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID;
} else
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set, and /etc/os-release carries no ID=/IMAGE_ID= fields.");
} else {
r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id));
if (r < 0)
return r;
arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID;
}
break;
}
case ARG_ENTRY_TOKEN_MACHINE_ID:
if (sd_id128_is_null(arg_machine_id))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set.");
r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id));
if (r < 0)
return r;
break;
case ARG_ENTRY_TOKEN_OS_IMAGE_ID: {
_cleanup_free_ char *buf = NULL;
r = parse_os_release(arg_root, "IMAGE_ID", &buf);
if (r < 0)
return log_error_errno(r, "Failed to load /etc/os-release: %m");
if (isempty(buf))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "IMAGE_ID= field not set in /etc/os-release.");
free_and_replace(arg_entry_token, buf);
break;
}
case ARG_ENTRY_TOKEN_OS_ID: {
_cleanup_free_ char *buf = NULL;
r = parse_os_release(arg_root, "ID", &buf);
if (r < 0)
return log_error_errno(r, "Failed to load /etc/os-release: %m");
if (isempty(buf))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "ID= field not set in /etc/os-release.");
free_and_replace(arg_entry_token, buf);
break;
}
case ARG_ENTRY_TOKEN_LITERAL:
assert(!isempty(arg_entry_token)); /* already filled in by command line parser */
break;
}
if (isempty(arg_entry_token) || !(utf8_is_valid(arg_entry_token) && string_is_safe(arg_entry_token)))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Selected entry token not valid: %s", arg_entry_token);
log_debug("Using entry token: %s", arg_entry_token);
return 0;
}
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