X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flibsystemd-bus%2Fbus-kernel.h;h=92d3888ed5241525a788b0a750900120e6e9399e;hp=1651c1e41d1afb94a144df07edfd08fa387e38a6;hb=626851be97b4332fc0401d754c81ae7bbc0f5dc4;hpb=66b26c5c9b02e787bc46db24daff04ad41e05ec5 diff --git a/src/libsystemd-bus/bus-kernel.h b/src/libsystemd-bus/bus-kernel.h index 1651c1e41..92d3888ed 100644 --- a/src/libsystemd-bus/bus-kernel.h +++ b/src/libsystemd-bus/bus-kernel.h @@ -23,15 +23,30 @@ #include "sd-bus.h" +#define KDBUS_PART_NEXT(item) \ + (typeof(item))(((uint8_t *)item) + ALIGN8((item)->size)) + +#define KDBUS_PART_FOREACH(part, head, first) \ + for (part = (head)->first; \ + (uint8_t *)(part) < (uint8_t *)(head) + (head)->size; \ + part = KDBUS_PART_NEXT(part)) + +#define KDBUS_PART_HEADER_SIZE offsetof(struct kdbus_item, data) +#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_PART_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 (32*1024) +#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 (32*1024) +#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; @@ -43,11 +58,17 @@ int bus_kernel_connect(sd_bus *b); int bus_kernel_take_fd(sd_bus *b); int bus_kernel_write_message(sd_bus *bus, sd_bus_message *m); -int bus_kernel_read_message(sd_bus *bus, sd_bus_message **m); +int bus_kernel_read_message(sd_bus *bus); -int bus_kernel_create(const char *name, char **s); +int bus_kernel_create_bus(const char *name, char **s); +int bus_kernel_create_namespace(const char *name, char **s); 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); + +int kdbus_translate_request_name_flags(uint64_t sd_bus_flags, uint64_t *kdbus_flags); +int kdbus_translate_attach_flags(uint64_t sd_bus_flags, uint64_t *kdbus_flags);