-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1+ */
#include <errno.h>
#include <getopt.h>
#include "sd-bus.h"
#include "sd-daemon.h"
+#include "alloc-util.h"
+#include "build.h"
#include "bus-internal.h"
#include "bus-util.h"
-#include "build.h"
#include "log.h"
+#include "main-func.h"
#include "util.h"
#define DEFAULT_BUS_PATH "unix:path=/run/dbus/system_bus_socket"
-const char *arg_bus_path = DEFAULT_BUS_PATH;
+static const char *arg_bus_path = DEFAULT_BUS_PATH;
+static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
static int help(void) {
"STDIO or socket-activatable proxy to a given DBus endpoint.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
- " --bus-path=PATH Path to the kernel bus (default: %s)\n",
+ " -p --bus-path=PATH Path to the kernel bus (default: %s)\n"
+ " -M --machine=MACHINE Name of machine to connect to\n",
program_invocation_short_name, DEFAULT_BUS_PATH);
return 0;
enum {
ARG_VERSION = 0x100,
+ ARG_MACHINE,
};
static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "bus-path", required_argument, NULL, 'p' },
- { NULL, 0, NULL, 0 }
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "bus-path", required_argument, NULL, 'p' },
+ { "machine", required_argument, NULL, 'M' },
+ {},
};
int c;
case 'p':
arg_bus_path = optarg;
+
break;
+ case 'M':
+ arg_bus_path = optarg;
+
+ arg_transport = BUS_TRANSPORT_MACHINE;
+
+ break;
default:
- log_error("Unknown option code %c", c);
- return -EINVAL;
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Unknown option code %c", c);
}
}
return 1;
}
-int main(int argc, char *argv[]) {
+static int run(int argc, char *argv[]) {
_cleanup_(sd_bus_unrefp) sd_bus *a = NULL, *b = NULL;
sd_id128_t server_id;
bool is_unix;
r = parse_argv(argc, argv);
if (r <= 0)
- goto finish;
+ return r;
r = sd_listen_fds(0);
if (r == 0) {
in_fd = SD_LISTEN_FDS_START;
out_fd = SD_LISTEN_FDS_START;
} else {
- log_error("Illegal number of file descriptors passed\n");
- goto finish;
+ log_error("Illegal number of file descriptors passed.");
+ return -EINVAL;
}
is_unix =
sd_is_socket(out_fd, AF_UNIX, 0, 0) > 0;
r = sd_bus_new(&a);
- if (r < 0) {
- log_error_errno(r, "Failed to allocate bus: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate bus: %m");
- r = sd_bus_set_address(a, arg_bus_path);
- if (r < 0) {
- log_error_errno(r, "Failed to set address to connect to: %m");
- goto finish;
- }
+ if (arg_transport == BUS_TRANSPORT_MACHINE)
+ r = bus_set_address_system_machine(a, arg_bus_path);
+ else
+ r = sd_bus_set_address(a, arg_bus_path);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set address to connect to: %m");
r = sd_bus_negotiate_fds(a, is_unix);
- if (r < 0) {
- log_error_errno(r, "Failed to set FD negotiation: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to set FD negotiation: %m");
r = sd_bus_start(a);
- if (r < 0) {
- log_error_errno(r, "Failed to start bus client: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to start bus client: %m");
r = sd_bus_get_bus_id(a, &server_id);
- if (r < 0) {
- log_error_errno(r, "Failed to get server ID: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to get server ID: %m");
r = sd_bus_new(&b);
- if (r < 0) {
- log_error_errno(r, "Failed to allocate bus: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate bus: %m");
r = sd_bus_set_fd(b, in_fd, out_fd);
- if (r < 0) {
- log_error_errno(r, "Failed to set fds: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to set fds: %m");
r = sd_bus_set_server(b, 1, server_id);
- if (r < 0) {
- log_error_errno(r, "Failed to set server mode: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to set server mode: %m");
r = sd_bus_negotiate_fds(b, is_unix);
- if (r < 0) {
- log_error_errno(r, "Failed to set FD negotiation: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to set FD negotiation: %m");
r = sd_bus_set_anonymous(b, true);
- if (r < 0) {
- log_error_errno(r, "Failed to set anonymous authentication: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to set anonymous authentication: %m");
r = sd_bus_start(b);
- if (r < 0) {
- log_error_errno(r, "Failed to start bus client: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to start bus client: %m");
for (;;) {
- _cleanup_(sd_bus_message_unrefp)sd_bus_message *m = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
int events_a, events_b, fd;
uint64_t timeout_a, timeout_b, t;
struct timespec _ts, *ts;
r = sd_bus_process(a, &m);
- if (r < 0) {
- log_error_errno(r, "Failed to process bus a: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to process bus a: %m");
if (m) {
r = sd_bus_send(b, m, NULL);
- if (r < 0) {
- log_error_errno(r, "Failed to send message: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to send message: %m");
}
if (r > 0)
continue;
r = sd_bus_process(b, &m);
- if (r < 0) {
+ if (r < 0)
/* treat 'connection reset by peer' as clean exit condition */
- if (r == -ECONNRESET)
- r = 0;
-
- goto finish;
- }
+ return r == -ECONNRESET ? 0 : r;
if (m) {
r = sd_bus_send(a, m, NULL);
- if (r < 0) {
- log_error_errno(r, "Failed to send message: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to send message: %m");
}
if (r > 0)
continue;
fd = sd_bus_get_fd(a);
- if (fd < 0) {
- r = fd;
- log_error_errno(r, "Failed to get fd: %m");
- goto finish;
- }
+ if (fd < 0)
+ return log_error_errno(fd, "Failed to get fd: %m");
events_a = sd_bus_get_events(a);
- if (events_a < 0) {
- r = events_a;
- log_error_errno(r, "Failed to get events mask: %m");
- goto finish;
- }
+ if (events_a < 0)
+ return log_error_errno(events_a, "Failed to get events mask: %m");
r = sd_bus_get_timeout(a, &timeout_a);
- if (r < 0) {
- log_error_errno(r, "Failed to get timeout: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to get timeout: %m");
events_b = sd_bus_get_events(b);
- if (events_b < 0) {
- r = events_b;
- log_error_errno(r, "Failed to get events mask: %m");
- goto finish;
- }
+ if (events_b < 0)
+ return log_error_errno(events_b, "Failed to get events mask: %m");
r = sd_bus_get_timeout(b, &timeout_b);
- if (r < 0) {
- log_error_errno(r, "Failed to get timeout: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to get timeout: %m");
t = timeout_a;
if (t == (uint64_t) -1 || (timeout_b != (uint64_t) -1 && timeout_b < timeout_a))
r = ppoll(p, ELEMENTSOF(p), ts, NULL);
}
- if (r < 0) {
- log_error("ppoll() failed: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(errno, "ppoll() failed: %m");
}
-finish:
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ return 0;
}
+
+DEFINE_MAIN_FUNCTION(run);
projects / thirdparty / systemd.git / blobdiff