}
static int bus_check_peercred(sd_bus *c) {
- int fd;
struct ucred ucred;
socklen_t l;
+ int fd;
assert(c);
fd = sd_bus_get_fd(c);
-
- assert(fd >= 0);
+ if (fd < 0)
+ return fd;
l = sizeof(struct ucred);
- if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) {
- log_error("SO_PEERCRED failed: %m");
+ if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
return -errno;
- }
- if (l != sizeof(struct ucred)) {
- log_error("SO_PEERCRED returned wrong size.");
+ if (l != sizeof(struct ucred))
return -E2BIG;
- }
if (ucred.uid != 0 && ucred.uid != geteuid())
return -EPERM;
return 1;
}
-int bus_connect_system(sd_bus **_bus) {
- sd_bus *bus = NULL;
+int bus_open_system_systemd(sd_bus **_bus) {
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
int r;
- bool private = true;
assert(_bus);
- if (geteuid() == 0) {
- /* If we are root, then let's talk directly to the
- * system instance, instead of going via the bus */
+ if (geteuid() != 0)
+ return sd_bus_open_system(_bus);
- r = sd_bus_new(&bus);
- if (r < 0)
- return r;
+ /* If we are root, then let's talk directly to the system
+ * instance, instead of going via the bus */
- r = sd_bus_set_address(bus, "unix:path=/run/systemd/private");
- if (r < 0)
- return r;
+ r = sd_bus_new(&bus);
+ if (r < 0)
+ return r;
- r = sd_bus_start(bus);
- if (r < 0)
- return r;
+ r = sd_bus_set_address(bus, "unix:path=/run/systemd/private");
+ if (r < 0)
+ return r;
- } else {
- r = sd_bus_open_system(&bus);
- if (r < 0)
- return r;
+ r = sd_bus_start(bus);
+ if (r < 0)
+ return r;
+
+ r = bus_check_peercred(bus);
+ if (r < 0)
+ return r;
+
+ *_bus = bus;
+ bus = NULL;
+
+ return 0;
+}
+
+int bus_generic_print_property(const char *name, sd_bus_message *property, bool all) {
+ char type;
+ const char *contents;
- private = false;
+ assert(name);
+ assert(property);
+
+ sd_bus_message_peek_type(property, &type, &contents);
+
+ switch (type) {
+
+ case SD_BUS_TYPE_STRING: {
+ const char *s;
+ sd_bus_message_read_basic(property, type, &s);
+
+ if (all || !isempty(s))
+ printf("%s=%s\n", name, s);
+
+ return 1;
}
- if (private) {
- r = bus_check_peercred(bus);
- if (r < 0) {
- sd_bus_unref(bus);
+ case SD_BUS_TYPE_BOOLEAN: {
+ bool b;
+
+ sd_bus_message_read_basic(property, type, &b);
+ printf("%s=%s\n", name, yes_no(b));
+
+ return 1;
+ }
+
+ case SD_BUS_TYPE_UINT64: {
+ uint64_t u;
+
+ sd_bus_message_read_basic(property, type, &u);
+
+ /* Yes, heuristics! But we can change this check
+ * should it turn out to not be sufficient */
+
+ if (endswith(name, "Timestamp")) {
+ char timestamp[FORMAT_TIMESTAMP_MAX], *t;
+
+ t = format_timestamp(timestamp, sizeof(timestamp), u);
+ if (t || all)
+ printf("%s=%s\n", name, strempty(t));
+
+ } else if (strstr(name, "USec")) {
+ char timespan[FORMAT_TIMESPAN_MAX];
+
+ printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u, 0));
+ } else
+ printf("%s=%llu\n", name, (unsigned long long) u);
+
+ return 1;
+ }
+
+ case SD_BUS_TYPE_UINT32: {
+ uint32_t u;
+
+ sd_bus_message_read_basic(property, type, &u);
+
+ if (strstr(name, "UMask") || strstr(name, "Mode"))
+ printf("%s=%04o\n", name, u);
+ else
+ printf("%s=%u\n", name, (unsigned) u);
+
+ return 1;
+ }
+
+ case SD_BUS_TYPE_INT32: {
+ int32_t i;
+
+ sd_bus_message_read_basic(property, type, &i);
+
+ printf("%s=%i\n", name, (int) i);
+ return 1;
+ }
+
+ case SD_BUS_TYPE_DOUBLE: {
+ double d;
+
+ sd_bus_message_read_basic(property, type, &d);
+
+ printf("%s=%g\n", name, d);
+ return 1;
+ }
+
+ case SD_BUS_TYPE_ARRAY:
+
+ if (streq(contents, "s")) {
+ bool space = false;
+ char tp;
+ const char *cnt;
+
+ sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents);
+
+ sd_bus_message_peek_type(property, &tp, &cnt);
+ if (all || cnt) {
+ const char *str;
+
+ printf("%s=", name);
+
+
+ while(sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str) > 0) {
+ printf("%s%s", space ? " " : "", str);
+
+ space = true;
+ }
+
+ puts("");
+ }
+
+ sd_bus_message_exit_container(property);
+
+ return 1;
+
+ } else if (streq(contents, "y")) {
+ const uint8_t *u;
+ size_t n;
+
+ sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n);
+ if (all || n > 0) {
+ unsigned int i;
+
+ printf("%s=", name);
+
+ for (i = 0; i < n; i++)
+ printf("%02x", u[i]);
- return -EACCES;
+ puts("");
+ }
+
+ return 1;
+
+ } else if (streq(contents, "u")) {
+ uint32_t *u;
+ size_t n;
+
+ sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n);
+ if (all || n > 0) {
+ unsigned int i;
+
+ printf("%s=", name);
+
+ for (i = 0; i < n; i++)
+ printf("%08x", u[i]);
+
+ puts("");
+ }
+
+ return 1;
}
+
+ break;
}
- *_bus = bus;
return 0;
}
+
+int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus) {
+ int r;
+
+ assert(transport >= 0);
+ assert(transport < _BUS_TRANSPORT_MAX);
+ assert(bus);
+
+ assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
+ assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -ENOTSUP);
+
+ switch (transport) {
+
+ case BUS_TRANSPORT_LOCAL:
+ if (user)
+ r = sd_bus_open_user(bus);
+ else
+ r = sd_bus_open_system(bus);
+
+ break;
+
+ case BUS_TRANSPORT_REMOTE:
+ r = sd_bus_open_system_remote(host, bus);
+ break;
+
+ case BUS_TRANSPORT_CONTAINER:
+ r = sd_bus_open_system_container(host, bus);
+ break;
+
+ default:
+ assert_not_reached("Hmm, unknown transport type.");
+ }
+
+ return r;
+}
~ianmdlvl / elogind.git / blobdiff