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nspawn: let's make LinkJournal an extended boolean

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Let's accept the usual boolean parameters for LinkJournal. It's
confusing otherwise.

Previously we'd accept "no" but not the other values we typically accept
for "false". We'd not accept any values for "true".

With this change we'll accept all true and false values and will do
something somewhat reasonable: any false value is treated like "no"
previously was reated. And any true value is now treated like "auto".

We don't document the new values, since this logic is mostly redundant,
and it's probably better if people consider this an enum rather than a
bool.

Fixes: #16888
This commit is contained in:
Lennart Poettering 2020-09-01 23:26:50 +02:00 committed by Zbigniew Jędrzejewski-Szmek
parent 47be8ddcee
commit 58cf204730
1 changed files with 12 additions and 5 deletions
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17
src/nspawn/nspawn-settings.c
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@ -809,6 +809,8 @@ static const char *const resolv_conf_mode_table[_RESOLV_CONF_MODE_MAX] = {
DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(resolv_conf_mode, ResolvConfMode, RESOLV_CONF_AUTO);
int parse_link_journal(const char *s, LinkJournal *ret_mode, bool *ret_try) {
int r;
assert(s);
assert(ret_mode);
assert(ret_try);
@ -816,9 +818,6 @@ int parse_link_journal(const char *s, LinkJournal *ret_mode, bool *ret_try) {
if (streq(s, "auto")) {
*ret_mode = LINK_AUTO;
*ret_try = false;
} else if (streq(s, "no")) {
*ret_mode = LINK_NO;
*ret_try = false;
} else if (streq(s, "guest")) {
*ret_mode = LINK_GUEST;
*ret_try = false;
@ -831,8 +830,16 @@ int parse_link_journal(const char *s, LinkJournal *ret_mode, bool *ret_try) {
} else if (streq(s, "try-host")) {
*ret_mode = LINK_HOST;
*ret_try = true;
} else
return -EINVAL;
} else {
/* Also support boolean values, to make things less confusing. */
r = parse_boolean(s);
if (r < 0)
return r;
/* Let's consider "true" to be equivalent to "auto". */
*ret_mode = r ? LINK_AUTO : LINK_NO;
*ret_try = false;
}
return 0;
}