mirror of
https://github.com/morgan9e/systemd
synced 2026-04-14 16:37:19 +09:00
59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
|
|
|
#include "alloc-util.h"
|
|
#include "cryptsetup-keyfile.h"
|
|
#include "fileio.h"
|
|
#include "iovec-util.h"
|
|
#include "log.h"
|
|
#include "path-util.h"
|
|
#include "strv.h"
|
|
|
|
int find_key_file(const char *key_file, char **search_path, const char *bindname, struct iovec *ret_key) {
|
|
|
|
int r;
|
|
|
|
assert(key_file);
|
|
assert(ret_key);
|
|
|
|
if (strv_isempty(search_path) || path_is_absolute(key_file)) {
|
|
|
|
r = read_full_file_full(
|
|
AT_FDCWD, key_file, UINT64_MAX, SIZE_MAX,
|
|
READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET,
|
|
bindname,
|
|
(char**) &ret_key->iov_base, &ret_key->iov_len);
|
|
if (r == -E2BIG)
|
|
return log_error_errno(r, "Key file '%s' too large.", key_file);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to load key file '%s': %m", key_file);
|
|
|
|
return 1;
|
|
}
|
|
|
|
STRV_FOREACH(i, search_path) {
|
|
_cleanup_free_ char *joined = NULL;
|
|
|
|
joined = path_join(*i, key_file);
|
|
if (!joined)
|
|
return log_oom();
|
|
|
|
r = read_full_file_full(
|
|
AT_FDCWD, joined, UINT64_MAX, SIZE_MAX,
|
|
READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET,
|
|
bindname,
|
|
(char**) &ret_key->iov_base, &ret_key->iov_len);
|
|
if (r >= 0)
|
|
return 1;
|
|
if (r == -E2BIG) {
|
|
log_warning_errno(r, "Key file '%s' too large, ignoring.", key_file);
|
|
continue;
|
|
}
|
|
if (r != -ENOENT)
|
|
return log_error_errno(r, "Failed to load key file '%s': %m", key_file);
|
|
}
|
|
|
|
/* Search path supplied, but file not found, report by returning NULL, but not failing */
|
|
*ret_key = IOVEC_MAKE(NULL, 0);
|
|
return 0;
|
|
}
|