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Expose delayed name resolution

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udevd had the ability to delay name resolution until the event, but this
was never exposed.  Add a --resolve-names=late option to do so.
This commit is contained in:
Scott James Remnant 2009-01-20 21:36:09 +00:00 committed by Scott James Remnant
parent 5f03ed8a56
commit 9032f119f0
3 changed files with 10 additions and 6 deletions
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3
NEWS
View file

@ -6,7 +6,8 @@ The udevadm test command has no longer a --force option, nodes and symlinks
are always updated with a test run now.
The udevd daemon can be started with --resolve-names=never to avoid all user
and group lookups (e.g. in cut-down systems).
and group lookups (e.g. in cut-down systems) or --resolve-names=late to
lookup user and groups every time events are handled.
udev 136
========

8
udev/udevd.c
View file

@ -683,16 +683,18 @@ int main(int argc, char *argv[])
case 'N':
if (strcmp (optarg, "early") == 0) {
resolve_names = 1;
} else if (strcmp (optarg, "late") == 0) {
resolve_names = 0;
} else if (strcmp (optarg, "never") == 0) {
resolve_names = -1;
} else {
fprintf(stderr, "resolve-names must be early or never\n");
err(udev, "resolve-names must be early or never\n");
fprintf(stderr, "resolve-names must be early, late or never\n");
err(udev, "resolve-names must be early, late or never\n");
goto exit;
}
break;
case 'h':
printf("Usage: udevd [--help] [--daemon] [--debug-trace] [--debug] [--resolve-names=early|never] [--version]\n");
printf("Usage: udevd [--help] [--daemon] [--debug-trace] [--debug] [--resolve-names=early|late|never] [--version]\n");
goto exit;
case 'V':
printf("%s\n", VERSION);

5
udev/udevd.xml
View file

@ -29,7 +29,7 @@
<arg><option>--debug-trace</option></arg>
<arg><option>--debug</option></arg>
<arg><option>--version</option></arg>
<arg><option>--resolve-names=early|never</option></arg>
<arg><option>--resolve-names=early|late|never</option></arg>
<arg><option>--help</option></arg>
</cmdsynopsis>
</refsynopsisdiv>
@ -70,7 +70,8 @@
<listitem>
<para>Specify when udevd should resolve names of users and groups.
When set to <option>early</option> (the default) names will be
resolved when the rules are parsed.
resolved when the rules are parsed. When set to
<option>late</option> names will be resolved for every event.
When set to <option>never</option> names will never be resolved
and all devices will be owned by root.</para>
</listitem>