From 55944e5e40b1be2afc4855d8d2baf4b73d1876b5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:49:52 +0200 Subject: Adding upstream version 255.4. Signed-off-by: Daniel Baumann --- src/userdb/userdbd.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 src/userdb/userdbd.c (limited to 'src/userdb/userdbd.c') diff --git a/src/userdb/userdbd.c b/src/userdb/userdbd.c new file mode 100644 index 0000000..89ac9c7 --- /dev/null +++ b/src/userdb/userdbd.c @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include +#include + +#include "daemon-util.h" +#include "userdbd-manager.h" +#include "log.h" +#include "main-func.h" +#include "signal-util.h" + +/* This service offers two Varlink services, both implementing io.systemd.UserDatabase: + * + * → io.systemd.NameServiceSwitch: this is a compatibility interface for glibc NSS: it responds to + * name lookups by checking the classic NSS interfaces and responding that. + * + * → io.systemd.Multiplexer: this multiplexes lookup requests to all Varlink services that have a + * socket in /run/systemd/userdb/. It's supposed to simplify clients that don't want to implement + * the full iterative logic on their own. + * + * → io.systemd.DropIn: this makes JSON user/group records dropped into /run/userdb/ available as + * regular users. + */ + +static int run(int argc, char *argv[]) { + _cleanup_(manager_freep) Manager *m = NULL; + _unused_ _cleanup_(notify_on_cleanup) const char *notify_stop = NULL; + int r; + + log_setup(); + + umask(0022); + + if (argc != 1) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments."); + + if (setenv("SYSTEMD_BYPASS_USERDB", "io.systemd.NameServiceSwitch:io.systemd.Multiplexer:io.systemd.DropIn", 1) < 0) + return log_error_errno(errno, "Failed to set $SYSTEMD_BYPASS_USERDB: %m"); + + assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0); + + r = manager_new(&m); + if (r < 0) + return log_error_errno(r, "Could not create manager: %m"); + + r = manager_startup(m); + if (r < 0) + return log_error_errno(r, "Failed to start up daemon: %m"); + + notify_stop = notify_start(NOTIFY_READY, NOTIFY_STOPPING); + + r = sd_event_loop(m->event); + if (r < 0) + return log_error_errno(r, "Event loop failed: %m"); + + return 0; +} + +DEFINE_MAIN_FUNCTION(run); -- cgit v1.2.3