X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=direct%2Ftimothy_tests%2Fstress_tester%2Fyaffs_tester.c;fp=direct%2Ftimothy_tests%2Fstress_tester%2Fyaffs_tester.c;h=86dcf4675cb4a143f4f68ffddfae019f37476190;hp=0000000000000000000000000000000000000000;hb=121c055437f23d9d6bc7b57d36ecf128b447013f;hpb=d7388fb75a13610d14d0afc397f826bd44c972e1

diff --git a/direct/timothy_tests/stress_tester/yaffs_tester.c b/direct/timothy_tests/stress_tester/yaffs_tester.c
new file mode 100644
index 0000000..86dcf46
--- /dev/null
+++ b/direct/timothy_tests/stress_tester/yaffs_tester.c
@@ -0,0 +1,384 @@
+/*
+ * YAFFS: Yet another FFS. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ *   for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Timothy Manning <timothy@yaffs.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * yaffs_tester.c designed to stress test yaffs2 direct.
+ */
+
+
+#include "yaffs_tester.h"
+
+
+
+int random_seed;
+int simulate_power_failure = 0;
+
+
+buffer message_buffer;	/*create  message_buffer */
+
+char yaffs_test_dir[] ="/yaffs2/test_dir";	/*the path to the directory where all of the testing will take place*/
+char yaffs_mount_dir[]="/yaffs2/";		/*the path to the mount point which yaffs will mount*/
+
+
+int main(int argc, char *argv[]){	
+	
+	
+	init(yaffs_test_dir,yaffs_mount_dir,argc,argv);
+	test(yaffs_test_dir);
+	yaffs_unmount(yaffs_mount_dir);
+	return 0;
+}
+
+
+
+void init(char *yaffs_test_dir,char *yaffs_mount_dir,int argc, char *argv[]){
+	char output=0;
+	int x=0;
+	int seed=-1;
+	FILE *log_handle;
+	/*these variables are already set to zero, but it is better not to take chances*/
+	message_buffer.head=0;				 
+	message_buffer.tail=0;
+
+
+	log_handle=fopen(LOG_FILE,"w");
+	if (log_handle!=NULL){
+		fputs("log file for yaffs tester\n",log_handle);
+		fclose(log_handle);
+	}
+	add_to_buffer(&message_buffer,"welcome to the yaffs tester",MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/	
+	yaffs_start_up();
+    	yaffs_mount(yaffs_mount_dir);
+	for (x=0;x<argc;x++){
+//		add_to_buffer(&message_buffer,"argv ",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+//		add_to_buffer(&message_buffer,argv[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+		if (strcmp("-seed",argv[x])==0){			/*warning only compares the length of the strings, quick fix*/
+			seed= atoi(argv[x+1]);
+			/*add_to_buffer(&message_buffer,"setting seed to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+			append_int_to_buffer(&message_buffer,seed,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);			
+			append_to_buffer(&message_buffer,"\n",MESSAGE_LEVEL_BASIC_TASKS,PRINT);*/
+		}
+	}
+	if (seed==-1){
+		seed=time(NULL);
+		srand(seed); 
+	}
+	else {
+	srand(seed);
+	}
+	add_to_buffer(&message_buffer,"setting seed to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+	append_int_to_buffer(&message_buffer,seed,MESSAGE_LEVEL_BASIC_TASKS,PRINT);/* print boot up message*/	
+
+	if (yaffs_access(yaffs_test_dir,0))	/* if the test folder does not exist then create it */
+	{
+		add_to_buffer(&message_buffer,"creating dir: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_to_buffer(&message_buffer,yaffs_test_dir,MESSAGE_LEVEL_BASIC_TASKS,PRINT);	
+		output=yaffs_mkdir(yaffs_test_dir,S_IREAD | S_IWRITE);
+		yaffs_check_for_errors(output, &message_buffer,"could not create dir","created dir\n\n");
+	}
+	
+}
+
+void quit_program(){
+	yaffs_unmount(yaffs_mount_dir);
+	exit(1);
+}
+void join_paths(char *path1,char *path2,char *new_path ){
+
+/*	printf("strlen path1:%d\n",strlen(path1));
+	printf("strlen path2:%d\n",strlen(path2));
+	printf("path1; %s\n",path1);
+*/
+	add_to_buffer(&message_buffer, "joining paths:",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+	append_to_buffer(&message_buffer,path1,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+	append_to_buffer(&message_buffer, " and ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+	append_to_buffer(&message_buffer, path2,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+	if ( (path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]!='/') {
+		/*paths are compatiable. concatanate them. note -2 is because of \0*/  
+		strcat(new_path,path1);
+		strcat(new_path,path2);		
+		//char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
+		//strcpy(new_path,strcat(path1,path2)); 
+		//return new_path;
+	}	
+	else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]=='/') {
+		/*paths are compatiable. concatanate them*/  
+		strcat(new_path,path1);
+		strcat(new_path,path2);		
+		//char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))];
+		//strcpy(new_path,strcat(path1,path2)); 
+		//return new_path;
+	}
+	else if ((path1[(sizeof(path1)/sizeof(char))-2]!='/') && path2[0]!='/') {
+			/*need to add a "/". */  
+		strcat(new_path,path1);
+		strcat(new_path,"/");
+		strcat(new_path,path2);
+		//strcpy(new_path,strcat(path1,strcat("/\0",path2)));
+
+#if 0
+		copy_array(path1,new_path,0,0);
+		copy_array('\0',new_path,0,(sizeof(path1)/sizeof(char)));
+		copy_array(path2,new_path,0,(sizeof(path1)/sizeof(char))+1);
+ old method now trying to use copy_array
+		//char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))+1];
+		for (x=0;x<=(sizeof(path1)/sizeof(char))-1;x++){ 
+			new_path[x]=path1[x];
+		}
+		new_path[x+1]='/';
+		for (x=(sizeof(path1)/sizeof(char)) ,i=0 ;i<=(sizeof(path2)/sizeof(char));x++,i++){ 
+			new_path[x]=path2[i]; 
+		}
+#endif
+
+		//return new_path;
+	}
+	else if ((path1[(sizeof(path1)/sizeof(char))-2]=='/') && path2[0]=='/') {
+		/*need to remove a "/". */
+		/*yaffs does not mind the extra slash. */
+		//char new_path[(sizeof(path1)/sizeof(char))+(sizeof(path2)/sizeof(char))-1];
+		
+		strcat(new_path,path1);
+		strcat(new_path,path2);
+		//strcpy(new_path,strcat(path1,strncat("",path2,(sizeof(path1)/sizeof(char))-1))); 
+		//return new_path;
+	} 
+	else{
+		//error 
+		//return -1;
+	}
+}
+
+void open_random_file(char *yaffs_test_dir, handle_regster *P_open_handles_array){
+	int output=0;
+	int x=0;
+	char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
+	char path[MAX_FILE_NAME_SIZE+strlen(yaffs_test_dir)];
+	path[0]='\0';// this should clear the path
+	add_to_buffer(&message_buffer,"\n\number of opened handles: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+	append_int_to_buffer(&message_buffer,P_open_handles_array->number_of_open_handles,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+	if (P_open_handles_array->number_of_open_handles<MAX_NUMBER_OF_OPENED_HANDLES)
+	{
+		generate_random_string(name,MAX_FILE_NAME_SIZE);
+		printf("before %d %d %d\n",strlen(yaffs_test_dir),strlen(name),strlen(path));
+		join_paths(yaffs_test_dir,name,path);
+		printf("after %d %d %d\n",strlen(yaffs_test_dir),strlen(name),strlen(path));
+		add_to_buffer(&message_buffer,"trying to open file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+		if (yaffs_access(path,0)==0){
+			stat_file(path);
+		}
+		else {
+			add_to_buffer(&message_buffer,"file does not exists, creating file",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		}
+
+		output=yaffs_open(path,O_CREAT | O_TRUNC| O_RDWR, S_IREAD | S_IWRITE);
+		x=0;
+		for (x=0;P_open_handles_array->handle[x]!=-3 && x<MAX_NUMBER_OF_OPENED_HANDLES;x++){}	/*find an empty handle*/	 
+
+		add_to_buffer(&message_buffer,"handle array id ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_int_to_buffer(&message_buffer,x,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+			
+		//for (x=0;handle_pointers[x]!=NULL;x++){}
+		P_open_handles_array->handle[x]=output;
+		P_open_handles_array->path[x][0]='\0';
+		strcat(P_open_handles_array->path[x],path);
+		add_to_buffer(&message_buffer,"yaffs handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_int_to_buffer(&message_buffer,output,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+		add_to_buffer(&message_buffer,"stored handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+	
+		//yaffs_open will return a null pointer if it cannot open a file. check for errors will not work.			
+		yaffs_check_for_errors(output, &message_buffer,"failed to open file","opened file");
+		
+		P_open_handles_array->number_of_open_handles++; 
+	}
+	else  close_random_file(P_open_handles_array);
+ 
+}
+
+void write_to_random_file(handle_regster *P_open_handles_array){
+	int number_of_lines_of_text=0;
+	int length=100;
+	char text[length+1];
+	text[0]='\0';
+	int seek=0;
+	int x=0;
+	int output=0;
+	if (P_open_handles_array->number_of_open_handles>0){
+		
+		while (P_open_handles_array->handle[x]==-3){		/*find a random open handle*/
+			x=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1);
+		}
+		add_to_buffer(&message_buffer,"\n\ntrying to write to ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_to_buffer(&message_buffer,P_open_handles_array->path[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+		
+		stat_file(P_open_handles_array->path[x]);
+		number_of_lines_of_text=rand() %1000;
+		add_to_buffer(&message_buffer,"writing  ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_int_to_buffer(&message_buffer,number_of_lines_of_text,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_to_buffer(&message_buffer," lines of text",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+
+		
+		for (;number_of_lines_of_text>0;number_of_lines_of_text--)
+		{
+			generate_random_string(text,length);
+			seek=rand()%1000;
+			add_to_buffer(&message_buffer,"trying to seek to  ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+			append_int_to_buffer(&message_buffer,seek,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+			output=yaffs_lseek(P_open_handles_array->handle[x],seek,SEEK_SET);
+			yaffs_check_for_errors(output, &message_buffer,"failed to seek","seeked file");
+			add_to_buffer(&message_buffer,"trying to write to file",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+			output=yaffs_write(P_open_handles_array->handle[x], text, strlen(text));
+			yaffs_check_for_errors(output, &message_buffer,"failed to write text","wrote text");
+					
+		}	
+	 }
+}
+
+void truncate_random_file(handle_regster *P_open_handles_array){
+	int x=0;
+	int truncate_size=0;
+	int output=0;
+	
+	if (P_open_handles_array->number_of_open_handles>0){	
+		add_to_buffer(&message_buffer,"\n\ntruncate function ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		while (P_open_handles_array->handle[x]==-3){		/*find a random open handle*/
+			x=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1);
+		}
+		add_to_buffer(&message_buffer,"trying to truncate ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_to_buffer(&message_buffer,P_open_handles_array->path[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+		
+		stat_file(P_open_handles_array->path[x]);
+		truncate_size=rand() %10000;
+		output=yaffs_ftruncate(P_open_handles_array->handle[x], truncate_size);
+		yaffs_check_for_errors(output, &message_buffer,"failed to truncate file","truncated file");
+	}
+}
+
+void close_random_file(handle_regster *P_open_handles_array){
+	/*run out of space on the handle pointer array*/	
+	/*make space*/
+	int x=0;
+	int output=0;
+	int start=0;
+	printf("trying to clear handle");
+	if (P_open_handles_array->number_of_open_handles>0){
+		start=rand() % (MAX_NUMBER_OF_OPENED_HANDLES-1);
+
+		for (x=start;(x+1>start ||x<start);){
+			x++;			
+			if (x>MAX_NUMBER_OF_OPENED_HANDLES-1) x=0;
+			if (P_open_handles_array->handle[x] !=-3 ){
+				//the handle is open, so try to close it.
+				break;
+			}
+
+		}
+		if (P_open_handles_array->handle[x]!=-3)
+		{
+			add_to_buffer(&message_buffer,"\n\ntrying to close file: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+			append_to_buffer(&message_buffer,P_open_handles_array->path[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+			add_to_buffer(&message_buffer,"file handle: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+			append_int_to_buffer(&message_buffer,P_open_handles_array->handle[x],MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+	
+			stat_file(P_open_handles_array->path[x]);
+			output=yaffs_close(P_open_handles_array->handle[x]);
+
+			if (output==-1) yaffs_check_for_errors(output, &message_buffer,"failed to close file","closed file");
+			else {
+				yaffs_check_for_errors(output, &message_buffer,"failed to close file","closed file");
+				P_open_handles_array->handle[x]=-3;
+				P_open_handles_array->path[x][0]='\0';
+				P_open_handles_array->number_of_open_handles--;
+			}
+		}
+		else {
+			add_to_buffer(&message_buffer,"\n\ntried to close file but could not find a open file ",MESSAGE_LEVEL_BASIC_TASKS,PRINT);	
+		}	
+	}
+}
+
+void stat_file(char *path){
+	int output=0;
+	struct yaffs_stat stat;
+	if (yaffs_access(path,0)==0){
+		add_to_buffer(&message_buffer,"file exists, trying to stat: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		add_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+		output=yaffs_lstat(path,&stat);
+		yaffs_check_for_errors(output, &message_buffer,"failed to stat file","statted file");
+		//stat.st_ino,(int)stat.st_size,stat.st_mode
+		add_to_buffer(&message_buffer,"yaffs inode: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_int_to_buffer(&message_buffer,stat.st_ino,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_to_buffer(&message_buffer," file size: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_int_to_buffer(&message_buffer,(int)stat.st_size,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);			
+		append_to_buffer(&message_buffer," file mode: ",MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_int_to_buffer(&message_buffer,stat.st_mode,MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+	}
+	else{
+		add_to_buffer(&message_buffer,path,MESSAGE_LEVEL_BASIC_TASKS,NPRINT);
+		append_to_buffer(&message_buffer," does not exist,could not stat",MESSAGE_LEVEL_BASIC_TASKS,PRINT);
+	}
+}
+
+void test(char*yaffs_test_dir){
+	struct yaffs_stat stat;
+	int output=0;
+	//char name[MAX_FILE_NAME_SIZE+3 ]="apple\0";
+	//char path[MAX_FILE_NAME_SIZE];
+	handle_regster open_handles_array;
+	//int handle_pointers[MAX_NUMBER_OF_OPENED_HANDLES];
+	//int number_of_opened_handles=0;
+	int x=0;
+	
+		
+	open_handles_array.number_of_open_handles=0;
+	for (x=0;x<MAX_NUMBER_OF_OPENED_HANDLES;x++){
+		open_handles_array.handle[x]=-3;
+		open_handles_array.path[x][0]='\0';
+
+	}
+
+	while(1)
+	{
+
+		x=rand() % 3;
+		printf("running test: %d",x);
+		switch(x){
+			case 0 :open_random_file(yaffs_test_dir,&open_handles_array);break;
+			case 3 :write_to_random_file(&open_handles_array);break;
+//			case 1 :close_random_file(&open_handles_array);break;
+			case 2 :truncate_random_file(&open_handles_array);break;
+		}
+	}
+}
+void  generate_random_string(char *ptr,int length_of_str){
+	unsigned int x;
+	unsigned int length=((rand() %length_of_str)+1);	/*creates a int with the number of charecters been between 1 and 51*/ 		
+	char letter='\0';
+
+	//printf("generating string\n");
+	//printf("string length is %d\n",length);
+	for (x=0; x <= (length-2) &&length>2 ; x++)
+	{
+		//printf("x=%d\n",x);	
+		/* keep generating a charecter until the charecter is legal*/
+		while((letter=='\0' )||(letter=='/')||(letter=='\\')){
+			letter=(rand() % 126-32)+32;	/*generate a number between 32 and 126 and uses it as a charecter (letter) */
+		}	
+		ptr[x]=letter;
+		//printf("charecter generated is %c\n",ptr[x]);
+	}
+	ptr[x+1]='\0';	/*adds NULL charecter to turn it into a string*/
+	
+}
+