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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 "stat-util.h"
#include "sync-util.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 *marker = 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) {
log_debug_errno(r, "EFI binary is not a regular file, assuming no version information: %m");
return -ESRCH;
}
if (st.st_size < 27 || file_offset_beyond_memory_size(st.st_size))
return log_debug_errno(SYNTHETIC_ERRNO(ESRCH),
"EFI binary size too %s: %"PRIi64,
st.st_size < 27 ? "small" : "large", st.st_size);
buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (buf == MAP_FAILED)
return log_error_errno(errno, "Failed to mmap EFI binary: %m");
s = mempmem_safe(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
if (!s) {
r = log_debug_errno(SYNTHETIC_ERRNO(ESRCH), "EFI binary has no LoaderInfo marker.");
goto finish;
}
e = memmem_safe(s, st.st_size - (s - buf), " ####", 5);
if (!e || e - s < 3) {
r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "EFI binary has malformed LoaderInfo marker.");
goto finish;
}
marker = strndup(s, e - s);
if (!marker) {
r = log_oom();
goto finish;
}
log_debug("EFI binary LoaderInfo marker: \"%s\"", marker);
r = 0;
*ret = marker;
finish:
(void) munmap(buf, st.st_size);
return r;
}
int settle_entry_token(void) {
int r;
r = boot_entry_token_ensure(
arg_root,
etc_kernel(),
arg_machine_id,
&arg_entry_token_type,
&arg_entry_token);
if (r < 0)
return r;
log_debug("Using entry token: %s", arg_entry_token);
return 0;
}
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