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IPC: Improve information available in IpcParsedCommand (#72)

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* IPC: Add C descriptor support to IpcParsedCommand

* Add Command Type to IpcParsedCommand

* Replace constants with IpcCommandType where relevant.

* Add RawWithoutPadding pointer, required for serverside deserialization calculations.
This commit is contained in:
SciresM 2018-04-21 16:14:46 -07:00 committed by plutoo
parent b18854555a
commit f40f544a07
1 changed files with 26 additions and 4 deletions
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30
nx/include/switch/kernel/ipc.h
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@ -37,6 +37,17 @@ typedef enum {
BufferDirection_Exch=2,
} BufferDirection;
typedef enum {
IpcCommandType_Invalid = 0,
IpcCommandType_LegacyRequest = 1,
IpcCommandType_Close = 2,
IpcCommandType_LegacyControl = 3,
IpcCommandType_Request = 4,
IpcCommandType_Control = 5,
IpcCommandType_RequestWithContext = 6,
IpcCommandType_ControlWithContext = 7
} IpcCommandType;
typedef struct {
size_t NumSend; // A
size_t NumRecv; // B
@ -199,7 +210,7 @@ static inline void ipcSendHandleMove(IpcCommand* cmd, Handle h) {
static inline void* ipcPrepareHeader(IpcCommand* cmd, size_t sizeof_raw) {
u32* buf = (u32*)armGetTls();
size_t i;
*buf++ = 4 | (cmd->NumStaticIn << 16) | (cmd->NumSend << 20) | (cmd->NumRecv << 24) | (cmd->NumExch << 28);
*buf++ = IpcCommandType_Request | (cmd->NumStaticIn << 16) | (cmd->NumSend << 20) | (cmd->NumRecv << 24) | (cmd->NumExch << 28);
u32* fill_in_size_later = buf;
@ -292,6 +303,8 @@ static inline Result ipcDispatch(Handle session) {
/// IPC parsed command (response) structure.
typedef struct {
IpcCommandType CommandType; ///< Type of the command
bool HasPid; ///< true if the 'Pid' field is filled out.
u64 Pid; ///< PID included in the response (only if HasPid is true)
@ -313,8 +326,11 @@ typedef struct {
void* Statics[IPC_MAX_BUFFERS]; ///< Pointers to the statics.
size_t StaticSizes[IPC_MAX_BUFFERS]; ///< Sizes of the statics.
u8 StaticIndices[IPC_MAX_BUFFERS]; ///< Indices of the statics.
size_t NumStaticsOut; ///< Number of output statics available in the response.
void* Raw; ///< Pointer to the raw embedded data structure in the response.
void* RawWithoutPadding; ///< Pointer to the raw embedded data structure, without padding.
size_t RawSize; ///< Size of the raw embedded data.
} IpcParsedCommand;
@ -329,9 +345,14 @@ static inline Result ipcParse(IpcParsedCommand* r) {
u32 ctrl1 = *buf++;
size_t i;
r->CommandType = (IpcCommandType) (ctrl0 & 0xffff);
r->HasPid = false;
r->RawSize = (ctrl1 & 0x1ff) * 4;
r->NumHandles = 0;
r->NumStaticsOut = (ctrl1 >> 10) & 15;
if (r->NumStaticsOut >> 1) r->NumStaticsOut--; // Value 2 -> Single descriptor
if (r->NumStaticsOut >> 1) r->NumStaticsOut--; // Value 3+ -> (Value - 2) descriptors
if (ctrl1 & 0x80000000) {
u32 ctrl2 = *buf++;
@ -385,6 +406,7 @@ static inline Result ipcParse(IpcParsedCommand* r) {
size_t num_bufs = num_bufs_send + num_bufs_recv + num_bufs_exch;
r->Raw = (void*)(((uintptr_t)(buf + num_bufs*3) + 15) &~ 15);
r->RawWithoutPadding = (void*)((uintptr_t)(buf + num_bufs*3));
if (num_bufs > IPC_MAX_BUFFERS)
num_bufs = IPC_MAX_BUFFERS;
@ -418,7 +440,7 @@ static inline Result ipcParse(IpcParsedCommand* r) {
static inline Result ipcQueryPointerBufferSize(Handle session, size_t *size) {
u32* buf = (u32*)armGetTls();
buf[0] = 5;
buf[0] = IpcCommandType_Control;
buf[1] = 8;
buf[2] = 0;
buf[3] = 0;
@ -456,7 +478,7 @@ static inline Result ipcQueryPointerBufferSize(Handle session, size_t *size) {
*/
static inline Result ipcCloseSession(Handle session) {
u32* buf = (u32*)armGetTls();
buf[0] = 2;
buf[0] = IpcCommandType_Close;
return ipcDispatch(session);
}
///@}
@ -473,7 +495,7 @@ static inline Result ipcCloseSession(Handle session) {
static inline Result ipcConvertSessionToDomain(Handle session, u32* object_id_out) {
u32* buf = (u32*)armGetTls();
buf[0] = 5;
buf[0] = IpcCommandType_Control;
buf[1] = 8;
buf[4] = SFCI_MAGIC;
buf[5] = 0;