X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=AcessNative%2Fld-acess_src%2Fsyscalls.c;h=c649f28f600cc5c2880c7c6a7de75185acb14bb4;hb=c7acbe49842c871244d76ce9dd7e4e9e70ec3a97;hp=7bb3b03945c3559d1d26fe4a8141c0e56fede3d6;hpb=b4e2712f6a0849de53207ad50a38c9f468f22651;p=tpg%2Facess2.git

diff --git a/AcessNative/ld-acess_src/syscalls.c b/AcessNative/ld-acess_src/syscalls.c
index 7bb3b039..c649f28f 100644
--- a/AcessNative/ld-acess_src/syscalls.c
+++ b/AcessNative/ld-acess_src/syscalls.c
@@ -8,9 +8,24 @@
 #include <stdarg.h>
 #include <string.h>
 #include <stddef.h>
+#include <unistd.h>
+#ifndef __WIN32__
+# include <spawn.h>	// posix_spawn
+#endif
 #include "request.h"
 
+#if SYSCALL_TRACE
 #define DEBUG(str, x...)	Debug(str, x)
+#else
+#define DEBUG(...)	do{}while(0)
+#endif
+
+#define assert(cnd) do{ \
+	if( !(cnd) ) { \
+		fprintf(stderr, "%s:%i - assert failed - " #cnd, __FILE__, __LINE__);\
+		exit(-1); \
+	} \
+}while(0)
 
 #define	MAX_FPS	16
 
@@ -29,11 +44,13 @@ const char *ReadEntry(tRequestValue *Dest, void *DataDest, void **PtrDest, const
 	 int	direction = 0;	// 0: Invalid, 1: Out, 2: In, 3: Out
 	char	*str;
 	 int	len;
-	
+
 	// Eat whitespace
 	while(*ArgTypes && *ArgTypes == ' ')	ArgTypes ++;
 	if( *ArgTypes == '\0' )	return ArgTypes;
 	
+//	DEBUG("ArgTypes = '%s'", ArgTypes);
+	
 	// Get direction
 	switch(*ArgTypes)
 	{
@@ -105,7 +122,7 @@ const char *ReadEntry(tRequestValue *Dest, void *DataDest, void **PtrDest, const
 		break;
 	// Data (special handling)
 	case 'd':
-		len = va_arg(*Args, int);
+		len = va_arg(*Args, size_t);
 		str = va_arg(*Args, char*);
 		
 		// Save the pointer for later
@@ -113,7 +130,7 @@ const char *ReadEntry(tRequestValue *Dest, void *DataDest, void **PtrDest, const
 		
 		// Create parameter block
 		Dest->Type = ARG_TYPE_DATA;
-		Dest->Length = len;
+		Dest->Length = str ? len : 0;
 		Dest->Flags = 0;
 		if( direction & 2 )
 			Dest->Flags |= ARG_FLAG_RETURN;
@@ -121,7 +138,7 @@ const char *ReadEntry(tRequestValue *Dest, void *DataDest, void **PtrDest, const
 		// Has data?
 		if( direction & 1 )
 		{
-			if( DataDest )
+			if( DataDest && str )
 				memcpy(DataDest, str, len);
 		}
 		else
@@ -153,7 +170,7 @@ uint64_t _Syscall(int SyscallID, const char *ArgTypes, ...)
 {
 	va_list	args;
 	 int	paramCount, dataLength;
-	 int	retCount = 1, retLength = sizeof(uint64_t);
+	 int	retCount = 2, retLength = sizeof(uint64_t) + sizeof(uint32_t);
 	void	**retPtrs;	// Pointers to return buffers
 	const char	*str;
 	tRequestHeader	*req;
@@ -203,6 +220,7 @@ uint64_t _Syscall(int SyscallID, const char *ArgTypes, ...)
 	req->ClientID = 0;	//< Filled later
 	req->CallID = SyscallID;
 	req->NParams = paramCount;
+	req->MessageLength = dataLength;
 	dataPtr = &req->Params[paramCount];
 	
 	// Fill `output` and `input`
@@ -225,33 +243,33 @@ uint64_t _Syscall(int SyscallID, const char *ArgTypes, ...)
 	}
 	va_end(args);
 	
-	// Send syscall request
+	// --- Send syscall request
 	if( SendRequest(req, dataLength, retLength) < 0 ) {
 		fprintf(stderr, "syscalls.c: SendRequest failed (SyscallID = %i)\n", SyscallID);
 		exit(127);
 	}
 	
-	// Parse return value
-	dataPtr = &req->Params[req->NParams];
-	retValue = 0;
-	if( req->NParams >= 1 )
-	{
-		switch(req->Params[0].Type)
-		{
-		case ARG_TYPE_INT64:
-			retValue = *(uint64_t*)dataPtr;
-			dataPtr += req->Params[0].Length;
-			break;
-		case ARG_TYPE_INT32:
-			retValue = *(uint32_t*)dataPtr;
-			dataPtr += req->Params[0].Length;
-			break;
-		}	
-	}
+	Debug("req->NParams = %i", req->NParams);
+	assert(req->NParams >= 2);
+	// return
+	assert(req->Params[0].Type == ARG_TYPE_INT64);
+	assert(req->Params[0].Length == sizeof(uint64_t));
+	retValue = *(uint64_t*)dataPtr;
+	dataPtr += sizeof(uint64_t);
+	// errno
+	assert(req->Params[1].Type == ARG_TYPE_INT32);
+	assert(req->Params[1].Length == sizeof(uint32_t));
+	acess__errno = *(uint32_t*)dataPtr;
+	dataPtr += sizeof(uint32_t);
 	
 	// Write changes to buffers
+	if( req->NParams - 2 != retCount ) {
+		fprintf(stderr, "syscalls.c: Return count inbalance (%i - 1 != exp %i) [Call %i]\n",
+			req->NParams, retCount, SyscallID);
+		exit(127);
+	}
 	retCount = 0;
-	for( i = 1; i < req->NParams; i ++ )
+	for( i = 2; i < req->NParams; i ++ )
 	{
 		#if 0
 		 int	 j;
@@ -260,6 +278,7 @@ uint64_t _Syscall(int SyscallID, const char *ArgTypes, ...)
 			printf(" %02x", ((uint8_t*)dataPtr)[j]);
 		printf("\n");
 		#endif
+		assert( req->Params[i].Type == ARG_TYPE_DATA );
 		memcpy( retPtrs[retCount++], dataPtr, req->Params[i].Length );
 		dataPtr += req->Params[i].Length;
 	}
@@ -267,7 +286,7 @@ uint64_t _Syscall(int SyscallID, const char *ArgTypes, ...)
 	free( req );
 	free( retPtrs );
 	
-	DEBUG(": %llx", retValue);
+	DEBUG(": %i 0x%llx", SyscallID, retValue);
 	
 	return retValue;
 }
@@ -314,3 +333,24 @@ uint64_t native_tell(int FD)
 {
 	return ftell( gaSyscall_LocalFPs[FD] );
 }
+
+int native_execve(const char *filename, const char *const argv[], const char *const envp[])
+{
+	int ret;
+	ret = execve(filename, (void*)argv, (void*)envp);
+	perror("native_execve");
+	return ret;
+}
+
+int native_spawn(const char *filename, const char *const argv[], const char *const envp[])
+{
+	int rv;
+	
+	#if __WIN32__
+	rv = _spawnve(_P_NOWAIT, filename, argv, envp);
+	#else
+	rv = posix_spawn(NULL, filename, NULL, NULL, (void*)argv, (void*)envp);
+	#endif
+	
+	return rv;
+}