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-rw-r--r--src/shared/bus-get-properties.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/src/shared/bus-get-properties.c b/src/shared/bus-get-properties.c
new file mode 100644
index 0000000..0a16c72
--- /dev/null
+++ b/src/shared/bus-get-properties.c
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "bus-get-properties.h"
+#include "rlimit-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+
+int bus_property_get_bool(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ int b = *(bool*) userdata;
+
+ return sd_bus_message_append_basic(reply, 'b', &b);
+}
+
+int bus_property_set_bool(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *value,
+ void *userdata,
+ sd_bus_error *error) {
+
+ int b, r;
+
+ r = sd_bus_message_read(value, "b", &b);
+ if (r < 0)
+ return r;
+
+ *(bool*) userdata = b;
+ return 0;
+}
+
+int bus_property_get_id128(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ sd_id128_t *id = userdata;
+
+ if (sd_id128_is_null(*id)) /* Add an empty array if the ID is zero */
+ return sd_bus_message_append(reply, "ay", 0);
+ else
+ return sd_bus_message_append_array(reply, 'y', id->bytes, 16);
+}
+
+#if __SIZEOF_SIZE_T__ != 8
+int bus_property_get_size(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ uint64_t sz = *(size_t*) userdata;
+
+ return sd_bus_message_append_basic(reply, 't', &sz);
+}
+#endif
+
+#if __SIZEOF_LONG__ != 8
+int bus_property_get_long(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ int64_t l = *(long*) userdata;
+
+ return sd_bus_message_append_basic(reply, 'x', &l);
+}
+
+int bus_property_get_ulong(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ uint64_t ul = *(unsigned long*) userdata;
+
+ return sd_bus_message_append_basic(reply, 't', &ul);
+}
+#endif
+
+int bus_property_get_rlimit(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ const char *is_soft;
+ struct rlimit *rl;
+ uint64_t u;
+ rlim_t x;
+
+ assert(bus);
+ assert(reply);
+ assert(userdata);
+
+ is_soft = endswith(property, "Soft");
+
+ rl = *(struct rlimit**) userdata;
+ if (rl)
+ x = is_soft ? rl->rlim_cur : rl->rlim_max;
+ else {
+ struct rlimit buf = {};
+ const char *s, *p;
+ int z;
+
+ /* Chop off "Soft" suffix */
+ s = is_soft ? strndupa_safe(property, is_soft - property) : property;
+
+ /* Skip over any prefix, such as "Default" */
+ assert_se(p = strstrafter(s, "Limit"));
+
+ z = rlimit_from_string(p);
+ assert(z >= 0);
+
+ (void) getrlimit(z, &buf);
+ x = is_soft ? buf.rlim_cur : buf.rlim_max;
+ }
+
+ /* rlim_t might have different sizes, let's map RLIMIT_INFINITY to UINT64_MAX, so that it is the same on all
+ * archs */
+ u = x == RLIM_INFINITY ? UINT64_MAX : (uint64_t) x;
+
+ return sd_bus_message_append(reply, "t", u);
+}