2018-12-07 16:49:52 +01:00
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/* SPDX-License-Identifier: LGPL-2.1+ */
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#include "machined.h"
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#include "nscd-flush.h"
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#include "strv.h"
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2020-07-07 11:58:06 +02:00
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#include "user-util.h"
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2018-12-07 16:49:52 +01:00
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static int on_nscd_cache_flush_event(sd_event_source *s, void *userdata) {
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/* Let's ask glibc's nscd daemon to flush its caches. We request this for the three database machines may show
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* up in: the hosts database (for resolvable machine names) and the user and group databases (for the user ns
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* ranges). */
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(void) nscd_flush_cache(STRV_MAKE("passwd", "group", "hosts"));
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return 0;
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}
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int manager_enqueue_nscd_cache_flush(Manager *m) {
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int r;
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assert(m);
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if (!m->nscd_cache_flush_event) {
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r = sd_event_add_defer(m->event, &m->nscd_cache_flush_event, on_nscd_cache_flush_event, m);
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if (r < 0)
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return log_error_errno(r, "Failed to allocate NSCD cache flush event: %m");
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sd_event_source_set_description(m->nscd_cache_flush_event, "nscd-cache-flush");
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}
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r = sd_event_source_set_enabled(m->nscd_cache_flush_event, SD_EVENT_ONESHOT);
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if (r < 0) {
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m->nscd_cache_flush_event = sd_event_source_unref(m->nscd_cache_flush_event);
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return log_error_errno(r, "Failed to enable NSCD cache flush event: %m");
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}
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return 0;
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}
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2020-07-07 11:58:06 +02:00
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int manager_find_machine_for_uid(Manager *m, uid_t uid, Machine **ret_machine, uid_t *ret_internal_uid) {
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Machine *machine;
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Iterator i;
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int r;
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assert(m);
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assert(uid_is_valid(uid));
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/* Finds the machine for the specified host UID and returns it along with the UID translated into the
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* internal UID inside the machine */
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HASHMAP_FOREACH(machine, m->machines, i) {
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uid_t converted;
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r = machine_owns_uid(machine, uid, &converted);
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if (r < 0)
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return r;
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if (r) {
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if (ret_machine)
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*ret_machine = machine;
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if (ret_internal_uid)
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*ret_internal_uid = converted;
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return true;
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}
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}
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if (ret_machine)
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*ret_machine = NULL;
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if (ret_internal_uid)
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*ret_internal_uid = UID_INVALID;
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return false;
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}
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int manager_find_machine_for_gid(Manager *m, gid_t gid, Machine **ret_machine, gid_t *ret_internal_gid) {
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Machine *machine;
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Iterator i;
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int r;
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assert(m);
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assert(gid_is_valid(gid));
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HASHMAP_FOREACH(machine, m->machines, i) {
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gid_t converted;
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r = machine_owns_gid(machine, gid, &converted);
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if (r < 0)
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return r;
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if (r) {
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if (ret_machine)
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*ret_machine = machine;
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if (ret_internal_gid)
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*ret_internal_gid = converted;
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return true;
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}
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}
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if (ret_machine)
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*ret_machine = NULL;
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if (ret_internal_gid)
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*ret_internal_gid = GID_INVALID;
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return false;
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}
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