From: John Hodge <tpg@mutabah.net>
Date: Thu, 1 Dec 2011 11:22:31 +0000 (+0800)
Subject: Kernel - Removed boot script support (unneeded)
X-Git-Tag: rel0.14~42
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=d523a36f3eba8e009ca9aafd4e2e2be513cae1a6;p=tpg%2Facess2.git

Kernel - Removed boot script support (unneeded)
---

diff --git a/Kernel/system.c b/Kernel/system.c
index 2bd302d6..8fc2a1cc 100644
--- a/Kernel/system.c
+++ b/Kernel/system.c
@@ -1,36 +1,12 @@
 /*
- * Acess 2
- * Architecture Independent System Init
+ * Acess 2 Kernel
+ * - By John Hodge (thePowersGang)
  * system.c
+ * - Architecture Independent System Init
  */
 #define DEBUG	0
 #include <acess.h>
 
-#define N_VARIABLES	16
-#define N_MAX_ARGS	BITS
-
-// === TYPES ===
-typedef struct
-{
-	 int	TrueLine;
-	 int	nParts;
-	char	**Parts;
-}	tConfigLine;
-typedef struct
-{
-	 int	nLines;
-	tConfigLine	Lines[];
-}	tConfigFile;
-typedef struct
-{
-	const char	*Name;		// Name
-	 int	MinArgs;	// Minimum number of arguments
-	 int	MaxArgs;	// Maximum number of arguments
-	Uint	IntArgs;	// Bitmap of arguments that should be treated as integers
-	 int	Index;		// 
-	const char	*OptDefaults[N_MAX_ARGS];	// Default values for optional arguments
-}	tConfigCommand;
-
 // === IMPORTS ===
 extern void	Arch_LoadBootModules(void);
 extern int	Modules_LoadBuiltins(void);
@@ -44,37 +20,9 @@ void	System_ExecuteCommandLine(void);
 void	System_ParseVFS(char *Arg);
 void	System_ParseModuleArgs(char *Arg);
 void	System_ParseSetting(char *Arg);
-void	System_ExecuteScript(void);
-tConfigFile	*System_Int_ParseFile(char *File);
-
-// === CONSTANTS ===
-enum eConfigCommands {
-	CC_LOADMODULE,
-	CC_SPAWN,
-	CC_MOUNT,
-	CC_SYMLINK,
-	CC_MKDIR,
-	CC_OPEN,
-	CC_CLOSE,
-	CC_IOCTL
-};
-const tConfigCommand	caConfigCommands[] = {
-	{"module",  1,2, 00, CC_LOADMODULE, {"",NULL}},	// Load a module from a file
-	{"spawn",   1,1, 00, CC_SPAWN, {NULL}},		// Spawn a process
-	// --- VFS ---
-	{"mount",   3,4, 00, CC_MOUNT, {"",0}},		// Mount a device
-	{"symlink", 2,2, 00, CC_SYMLINK, {0}},	// Create a Symbolic Link
-	{"mkdir",   1,1, 00, CC_MKDIR, {0}},		// Create a Directory
-	{"open",    1,2, 00, CC_OPEN,  {(void*)VFS_OPENFLAG_READ,0}},	// Open a file
-	{"close",   1,1, 01, CC_CLOSE, {0}},	// Close an open file
-	{"ioctl",   3,3, 03, CC_IOCTL, {0}},	// Call an IOCtl
-	
-	{"", 0,0, 0, 0, {0}}
-};
-#define NUM_CONFIG_COMMANDS	(sizeof(caConfigCommands)/sizeof(caConfigCommands[0]))
 
 // === GLOBALS ===
-const char	*gsConfigScript = "/Acess/Conf/BootConf.cfg";
+const char	*gsInitBinary = "/Acess/SBin/init";
 char	*argv[32];
  int	argc;
 
@@ -92,8 +40,8 @@ void System_Init(char *CommandLine)
 	System_ExecuteCommandLine();
 	
 	// - Execute the Config Script
-	Log_Log("Config", "Executing config script '%s'", gsConfigScript);
-	System_ExecuteScript();
+	Log_Log("Config", "Spawning init '%s'", gsInitBinary);
+	Proc_Spawn(gsInitBinary);
 	
 	// Set the debug to be echoed to the terminal
 	Log_Log("Config", "Kernel now echoes to VT7 (Ctrl-Alt-F8)");
@@ -288,416 +236,17 @@ void System_ParseSetting(char *Arg)
 		*value = '\0';	// Remove '='
 		value ++;	// and eat it's position
 		
-		if(strcmp(Arg, "SCRIPT") == 0) {
-			Log_Log("Config", "Config Script: '%s'", value);
+		if(strcmp(Arg, "INIT") == 0) {
+			Log_Log("Config", "Init binary: '%s'", value);
 			if(strlen(value) == 0)
-				gsConfigScript = NULL;
-			else
-				gsConfigScript = value;
-		} else {
-			Log_Warning("Config", "Kernel config setting '%s' is not recognised", Arg);
-		}
-		
-	}
-}
-
-/**
- * \fn void System_ExecuteScript()
- * \brief Reads and parses the boot configuration script
- */
-void System_ExecuteScript(void)
-{
-	 int	fp;
-	 int	fLen = 0;
-	 int	i, j, k;
-	 int	val;
-	 int	result = 0;
-	 int	variables[N_VARIABLES];
-	 int	bReplaced[N_MAX_ARGS];
-	char	*fData;
-	char	*jmpTarget;
-	tConfigFile	*file;
-	tConfigLine	*line;
-	
-	ENTER("");
-
-	// Open Script
-	fp = VFS_Open(gsConfigScript, VFS_OPENFLAG_READ);
-	if(fp == -1) {
-		Log_Warning("Config", "Passed script '%s' does not exist", gsConfigScript);
-		LEAVE('-');
-		return;
-	}
-	
-	// Get length
-	VFS_Seek(fp, 0, SEEK_END);
-	fLen = VFS_Tell(fp);
-	LOG("VFS_Tell(0x%x) = %i", fp, fLen);
-	VFS_Seek(fp, 0, SEEK_SET);
-	// Read into memory buffer
-	fData = malloc(fLen+1);
-	VFS_Read(fp, fLen, fData);
-	fData[fLen] = '\0';
-	VFS_Close(fp);
-	
-	
-	// Parse File
-	file = System_Int_ParseFile(fData);
-	
-	// Parse each line
-	for( i = 0; i < file->nLines; i++ )
-	{
-		line = &file->Lines[i];
-		if( line->nParts == 0 )	continue;	// Skip blank
-		
-		if(line->Parts[0][0] == ':')	continue;	// Ignore labels
-		
-		// Prescan and eliminate variables
-		for( j = 1; j < line->nParts; j++ )
-		{
-			LOG("Arg #%i is '%s'", j, line->Parts[j]);
-			bReplaced[j] = 0;
-			if( line->Parts[j][0] != '$' )	continue;
-			if( line->Parts[j][1] == '?' ) {
-				val = result;
-			}
-			else {
-				val = atoi( &line->Parts[j][1] );
-				if( val < 0 || val > N_VARIABLES )	continue;
-				val = variables[ val ];
-			}
-			LOG("Replaced arg %i ('%s') with 0x%x", j, line->Parts[j], val);
-			line->Parts[j] = malloc( BITS/8+2+1 );
-			sprintf(line->Parts[j], "0x%x", val);
-			bReplaced[j] = 1;
-		}
-		
-		// Find the command name
-		for( j = 0; j < NUM_CONFIG_COMMANDS; j++ )
-		{
-			const char	*args[N_MAX_ARGS];
-			
-			if(strcmp(line->Parts[0], caConfigCommands[j].Name) != 0)	continue;
-			
-			Log_Debug("Config", "Command '%s', %i args passed", line->Parts[0], line->nParts-1);
-			
-			// Check against minimum argument count
-			if( line->nParts - 1 < caConfigCommands[j].MinArgs ) {
-				Log_Warning("Config",
-					"Configuration command '%s' requires at least %i arguments, %i given",
-					caConfigCommands[j].Name, caConfigCommands[j].MinArgs, line->nParts-1
-					);
-				break;
-			}
-			
-			// Check for extra arguments
-			if( line->nParts - 1 > caConfigCommands[j].MaxArgs ) {
-				Log_Warning("Config",
-					"Configuration command '%s' takes at most %i arguments, %i given",
-					caConfigCommands[j].Name, caConfigCommands[j].MaxArgs, line->nParts-1
-					);
-				break;
-			}
-			
-			// Fill in defaults
-			for( k = caConfigCommands[j].MaxArgs-1; k > line->nParts - 1; k-- ) {
-				args[k] = caConfigCommands[j].OptDefaults[k];
-			}
-			
-			// Convert arguments to integers
-			for( k = line->nParts-1; k--; )
-			{
-				if( k < 32 && (caConfigCommands[j].IntArgs & (1 << k)) ) {
-					args[k] = (const char *)(Uint)atoi(line->Parts[k+1]);
-				}
-				else {
-					args[k] = (char *)line->Parts[k+1];
-				}
-				LOG("args[%i] = %p", k, args[k]);
-			}
-			switch( (enum eConfigCommands) caConfigCommands[j].Index )
-			{
-			case CC_LOADMODULE:
-				result = Module_LoadFile( args[0], args[1] );
-				break;
-			case CC_SPAWN:
-				result = Proc_Spawn( args[0] );
-				break;
-			case CC_MOUNT:
-				result = VFS_Mount( args[0], args[1], args[2], args[3] );
-				break;
-			case CC_SYMLINK:
-				result = VFS_Symlink( args[0], args[1] );
-				break;
-			case CC_OPEN:
-				result = VFS_Open( args[0], (Uint)args[1] );
-				break;
-			case CC_CLOSE:
-				VFS_Close( (Uint)args[0] );
-				result = 0;
-				break;
-			case CC_MKDIR:
-				result = VFS_MkDir( args[0] );
-				break;
-			case CC_IOCTL:
-				result = VFS_IOCtl( (Uint)args[0], (Uint)args[1], (void *)args[2] );
-				break;
-			}
-			LOG("Config", "result = %i", result);
-			break;
-		}
-		if( j < NUM_CONFIG_COMMANDS )	continue;
-			
-		// --- State and Variables ---
-		if(strcmp(line->Parts[0], "set") == 0)
-		{
-			 int	to, value;
-			if( line->nParts-1 != 2 ) {
-				Log_Warning("Config", "Configuration command 'set' requires 2 arguments, %i given",
-					line->nParts-1);
-				continue;
-			}
-			
-			to = atoi(line->Parts[1]);
-			value = atoi(line->Parts[2]);
-			
-			variables[to] = value;
-			result = value;
-		}
-		// if <val1> <op> <val2> <dest>
-		else if(strcmp(line->Parts[0], "if") == 0)
-		{
-			if( line->nParts-1 != 4 ) {
-				Log_Warning("Config", "Configuration command 'if' requires 4 arguments, %i given",
-					line->nParts-1);
-			}
-			
-			result = atoi(line->Parts[1]);
-			val = atoi(line->Parts[3]);
-			
-			jmpTarget = line->Parts[4];
-			
-			Log_Log("Config", "IF 0x%x %s 0x%x THEN GOTO %s",
-				result, line->Parts[2], val, jmpTarget);
-			
-			if( strcmp(line->Parts[2], "<" ) == 0 ) {
-				if( result < val )	goto jumpToLabel;
-			}
-			else if( strcmp(line->Parts[2], "<=") == 0 ) {
-				if( result <= val )	goto jumpToLabel;
-			}
-			else if( strcmp(line->Parts[2], ">" ) == 0 ) {
-				if (result > val )	goto jumpToLabel;
-			}
-			else if( strcmp(line->Parts[2], ">=") == 0 ) {
-				if( result >= val )	goto jumpToLabel;
-			}
-			else if( strcmp(line->Parts[2],  "=") == 0 ) {
-				if( result == val )	goto jumpToLabel;
-			}
-			else if( strcmp(line->Parts[2], "!=") == 0 ) {
-				if( result != val )	goto jumpToLabel;
-			}
-			else {
-				Log_Warning("Config", "Unknown comparision '%s' in `if`", line->Parts[2]);
-			}
-			
-		}
-		else if(strcmp(line->Parts[0], "goto") == 0) {
-			if( line->nParts-1 != 1 ) {
-				Log_Warning("Config", "Configuration command 'goto' requires 1 arguments, %i given",
-					line->nParts-1);
-			}
-			jmpTarget = line->Parts[1];
-		
-		jumpToLabel:
-			for( j = 0; j < file->nLines; j ++ )
-			{
-				if(file->Lines[j].nParts == 0)
-					continue;
-				if(file->Lines[j].Parts[0][0] != ':')
-					continue;
-				if( strcmp(file->Lines[j].Parts[0]+1, jmpTarget) == 0)
-					break;
-			}
-			if( j == file->nLines )
-				Log_Warning("Config", "Unable to find label '%s'", jmpTarget);
+				gsInitBinary = NULL;
 			else
-				i = j;
+				gsInitBinary = value;
 		}
 		else {
-			Log_Warning("Config", "Unknown configuration command '%s' on line %i",
-				line->Parts[0],
-				line->TrueLine
-				);
-		}
-	}
-	
-	// Clean up after ourselves
-	for( i = 0; i < file->nLines; i++ ) {
-		if( file->Lines[i].nParts == 0 )	continue;	// Skip blank
-		for( j = 0; j < file->Lines[i].nParts; j++ ) {
-			if(IsHeap(file->Lines[i].Parts[j]))
-				free(file->Lines[i].Parts[j]);
-		}
-		free( file->Lines[i].Parts );
-	}
-	
-	// Free data
-	free( file );
-	free( fData );
-	
-	LEAVE('-');
-}
-
-/**
- * \brief Parses a config file
- * \param FileData	Read/Write buffer containing the config file data
- *                  (will be modified)
- * \return ::tConfigFile structure that represents the original contents
- *         of \a FileData
- */
-tConfigFile *System_Int_ParseFile(char *FileData)
-{
-	char	*ptr;
-	char	*start;
-	 int	nLines = 1;
-	 int	i, j;
-	tConfigFile	*ret;
-	
-	ENTER("pFileData", FileData);
-	
-	// Prescan and count the number of lines
-	for(ptr = FileData; *ptr; ptr++)
-	{		
-		if(*ptr != '\n')	continue;
-		
-		if(ptr == FileData) {
-			nLines ++;
-			continue;
-		}
-		
-		// Escaped EOL
-		if(ptr[-1] == '\\')	continue;
-		
-		nLines ++;
-	}
-	
-	LOG("nLines = %i", nLines);
-	
-	// Ok so we have `nLines` lines, now to allocate our return
-	ret = malloc( sizeof(tConfigFile) + sizeof(tConfigLine)*nLines );
-	ret->nLines = nLines;
-	
-	// Read the file for real
-	for(
-		ptr = FileData, i = 0;
-		*ptr;
-		i++
-		)
-	{
-		start = ptr;
-		
-		ret->Lines[i].nParts = 0;
-		ret->Lines[i].Parts = NULL;
-		
-		// Count parts
-		for(;;)
-		{
-			// Read leading whitespace
-			while( *ptr == '\t' || *ptr == ' ' )	ptr++;
-			
-			// End of line/file
-			if( *ptr == '\0' || *ptr == '\n' ) {
-				if(*ptr == '\n')	ptr ++;
-				break;
-			}
-			// Comment
-			if( *ptr == '#' || *ptr == ';' ) {
-				while( *ptr && *ptr != '\n' )	ptr ++;
-				if(*ptr == '\n')	ptr ++;
-				break;
-			}
-			
-			ret->Lines[i].nParts ++;
-			// Quoted
-			if( *ptr == '"' ) {
-				ptr ++;
-				while( *ptr && !(*ptr == '"' && ptr[-1] == '\\') && *ptr != '\n' )
-					ptr++;
-				continue;
-			}
-			// Unquoted
-			while( *ptr && !(*ptr == '\t' || *ptr == ' ') && *ptr != '\n' )
-				ptr++;
-		}
-		
-		LOG("ret->Lines[%i].nParts = %i", i, ret->Lines[i].nParts);
-		
-		if( ret->Lines[i].nParts == 0 ) {
-			ret->Lines[i].Parts = NULL;
-			continue;
+			Log_Warning("Config", "Kernel config setting '%s' is not recognised", Arg);
 		}
 		
-		// Allocate part list
-		ret->Lines[i].Parts = malloc( sizeof(char*) * ret->Lines[i].nParts );
-		
-		// Fill list
-		for( ptr = start, j = 0; ; j++ )
-		{
-			// Read leading whitespace
-			while( *ptr == '\t' || *ptr == ' ' )	ptr++;
-			
-			// End of line/file
-			if( *ptr == '\0' || *ptr == '\n' ) {
-				if(*ptr == '\n')	ptr ++;
-				break;
-			}
-			// Comment
-			if( *ptr == '#' || *ptr == ';' ) {
-				while( *ptr && *ptr != '\n' )	ptr ++;
-				if(*ptr == '\n')	ptr ++;
-				break;
-			}
-			
-			ret->Lines[i].Parts[j] = ptr;
-			
-			// Quoted
-			if( *ptr == '"' ) {
-				ptr ++;
-				ret->Lines[i].Parts[j] = ptr;
-				while( *ptr && !(*ptr == '"' && ptr[-1] == '\\') && *ptr != '\n' )
-					ptr++;
-			}
-			// Unquoted
-			else {
-				while( *ptr != '\t' && *ptr != ' ' && *ptr != '\n' )
-					ptr++;
-			}
-			
-			// Break if we have reached NULL
-			if( *ptr == '\0' ) {
-				LOG("ret->Lines[%i].Parts[%i] = '%s'", i, j, ret->Lines[i].Parts[j]);
-				break;
-			}
-			if( *ptr == '\n' ) {
-				*ptr = '\0';
-				LOG("ret->Lines[%i].Parts[%i] = '%s'", i, j, ret->Lines[i].Parts[j]);
-				ptr ++;
-				break;
-			}
-			*ptr = '\0';	// Cap off string
-			LOG("ret->Lines[%i].Parts[%i] = '%s'", i, j, ret->Lines[i].Parts[j]);
-			ptr ++;	// And increment for the next round
-		}
 	}
-	
-	if( i < ret->nLines ) {
-		ret->Lines[i].nParts = 0;
-		ret->Lines[i].Parts = NULL;
-		LOG("Cleaning up final empty line");
-	}
-	
-	LEAVE('p', ret);
-	return ret;
 }
+