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boot: Drop use of MetaiMatch

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A future commit will add support for unicode collation protocol that
allows case folding and comparing strings with locale awareness. But it
only operates on whole strings, so fnmatch cannot use those without a
heavy cost. Instead we just case fold the patterns instead (the IDs we
try to match are already lower case).
This commit is contained in:
Jan Janssen 2022-06-09 10:07:06 +02:00
parent 0e8ecba96e
commit 23742af522
2 changed files with 19 additions and 5 deletions
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9
man/loader.conf.xml
View File

@ -110,7 +110,14 @@
</row>
</tbody>
</tgroup>
</table></listitem>
</table>
<para>Supported glob wilcard patterns are <literal>?</literal>, <literal>*</literal>, and
<literal>[…]</literal> (including ranges). Note that these patterns use the same syntax as
<citerefentry><refentrytitle>glob</refentrytitle><manvolnum>7</manvolnum></citerefentry>, but do not
support all features. In particular, set negation and named character classes are not supported. The
matching is done case-insensitively on the entry ID (as shown by <command>bootctl
list</command>).</para></listitem>
</varlistentry>
<varlistentry>

15
src/boot/efi/boot.c
View File

@ -1170,7 +1170,7 @@ static void config_defaults_load_from_file(Config *config, CHAR8 *content) {
}
if (streq8((char *) key, "default")) {
if (value[0] == '@' && !streq8((char *) value, "@saved")) {
if (value[0] == '@' && !strcaseeq8((char *) value, "@saved")) {
log_error_stall(L"Unsupported special entry identifier: %a", value);
continue;
}
@ -1606,6 +1606,11 @@ static void config_load_defaults(Config *config, EFI_FILE *root_dir) {
(void) efivar_get(LOADER_GUID, L"LoaderEntryDefault", &config->entry_default_efivar);
strtolower16(config->entry_default_config);
strtolower16(config->entry_default_efivar);
strtolower16(config->entry_oneshot);
strtolower16(config->entry_saved);
config->use_saved_entry = streq16(config->entry_default_config, L"@saved");
config->use_saved_entry_efivar = streq16(config->entry_default_efivar, L"@saved");
if (config->use_saved_entry || config->use_saved_entry_efivar)
@ -1710,14 +1715,16 @@ static int config_entry_compare(const ConfigEntry *a, const ConfigEntry *b) {
return CMP(a->tries_done, b->tries_done);
}
static UINTN config_entry_find(Config *config, const CHAR16 *needle) {
static UINTN config_entry_find(Config *config, const CHAR16 *pattern) {
assert(config);
if (!needle)
/* We expect pattern and entry IDs to be already case folded. */
if (!pattern)
return IDX_INVALID;
for (UINTN i = 0; i < config->entry_count; i++)
if (MetaiMatch(config->entries[i]->id, (CHAR16*) needle))
if (efi_fnmatch(pattern, config->entries[i]->id))
return i;
return IDX_INVALID;