X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd-bus%2Fbus-kernel.h;h=c4573c92228cb6feb3644d7dbc9e5d430e3e4ccc;hb=872c8faaf2009422a91d227ae0b5c6f04c9d2c69;hp=ed3f987ccda7af6ca14e6dcdc24fc8a4acf13164;hpb=bc7fd8cdbef54ebd3902cdd455ecad3e095f7450;p=elogind.git

diff --git a/src/libsystemd-bus/bus-kernel.h b/src/libsystemd-bus/bus-kernel.h
index ed3f987cc..c4573c922 100644
--- a/src/libsystemd-bus/bus-kernel.h
+++ b/src/libsystemd-bus/bus-kernel.h
@@ -23,9 +23,31 @@
 
 #include "sd-bus.h"
 
+#define KDBUS_ITEM_NEXT(item) \
+        (typeof(item))(((uint8_t *)item) + ALIGN8((item)->size))
+
+#define KDBUS_ITEM_FOREACH(item, head)                                          \
+        for (item = (head)->items;                                              \
+             (uint8_t *)(item) < (uint8_t *)(head) + (head)->size;              \
+             item = KDBUS_ITEM_NEXT(item))
+
+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
+#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
+
 #define MEMFD_CACHE_MAX 32
+
+/* When we cache a memfd block for reuse, we will truncate blocks
+ * longer than this in order not to keep too much data around. */
 #define MEMFD_CACHE_ITEM_SIZE_MAX (128*1024)
 
+/* This determines at which minimum size we prefer sending memfds over
+ * sending vectors */
+#define MEMFD_MIN_SIZE (128*1024)
+
+/* The size of the per-connection memory pool that we set up and where
+ * the kernel places our incoming messages */
+#define KDBUS_POOL_SIZE (16*1024*1024)
+
 struct memfd_cache {
         int fd;
         void *address;
@@ -44,3 +66,5 @@ int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *size);
 void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t size);
 
 void bus_kernel_flush_memfd(sd_bus *bus);
+
+int bus_kernel_parse_unique_name(const char *s, uint64_t *id);