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stdio-bridge: define main through macro

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-11-16 15:20:28 +01:00
parent 7caefb8140
commit 1b425cb28f
1 changed files with 48 additions and 94 deletions
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142
src/stdio-bridge/stdio-bridge.c
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@ -89,7 +89,7 @@ static int parse_argv(int argc, char *argv[]) {
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;
@ -101,7 +101,7 @@ int main(int argc, char *argv[]) {
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
return r;
r = sd_listen_fds(0);
if (r == 0) {
@ -112,7 +112,7 @@ int main(int argc, char *argv[]) {
out_fd = SD_LISTEN_FDS_START;
} else {
log_error("Illegal number of file descriptors passed.");
goto finish;
return -EINVAL;
}
is_unix =
@ -120,73 +120,51 @@ int main(int argc, char *argv[]) {
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");
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) {
log_error_errno(r, "Failed to set address to connect to: %m");
goto finish;
}
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;
@ -195,74 +173,51 @@ int main(int argc, char *argv[]) {
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))
@ -290,12 +245,11 @@ int main(int argc, char *argv[]) {
r = ppoll(p, ELEMENTSOF(p), ts, NULL);
}
if (r < 0) {
log_error_errno(errno, "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);