#include <u.h>#include <libc.h>#include <blockalloc.h> #define LIKE50MB 52428800 int createtestfile(void);int sproc(char*,char*[]);int crucify(int); int disksimpid; voidmain(int argc, char *argv[]){	initinstru();	Fn *f = infn("main");	action(f,"creating virtual sd device sdTT");	int fd = createtestfile();	if(fd<0){//		crucify(disksimpid);		upanic(f,smprint("unable to open device /dev/sdTT/data. errstr = %r"));	}	action(f,"reaming with blocksize 1024");	int retval = ream(fd,1024,0);	if(retval == -2)		upanic(f,smprint("ream short read errstr = %r"));	action(f,smprint("ream retval = %d",retval));	Disk *d;	action(f,smprint("d(ptr) = %p",d));	retval = fd2disk(fd,d,0);	action(f,smprint("fd2disk retval = %d",retval));	action(f,smprint("d(ptr) = %p",d));	u64int blocksize = d->meta->blocksize;	u64int ptrmapstart = d->meta->ptrmapstart;	u64int totalblocks = d->meta->totalblocks;	u64int bitmapstart = d->meta->bitmapstart;	u64int dsize = d->size;	action(f,smprint("blocksize = %d",d->meta->blocksize));	action(f,smprint("ptrmapstart = %d",d->meta->ptrmapstart));	action(f,smprint("totalblocks = %d",d->meta->totalblocks));	action(f,smprint("bitmapstart = %d",d->meta->bitmapstart));	action(f,smprint("disk size = %d",d->size));	close(fd);	crucify(disksimpid);	action(f,"done");	outfn(f);	exits(nil);} intcreatetestfile(void){	Fn *f = infn("createtestfile");	action(f,"running disksim");//	char *dsargs[] = { "aux/disksim","sdTT",0 };//	disksimpid = sproc("/bin/aux/disksim",dsargs);//	sleep(2);//	int fd = open("/dev/sdTT/ctl",OWRITE|OREAD);//	if(fd<0)//		upanic(f,"could not open /dev/sdTT/ctl");//	fprint(fd,"geometry %d 512 0 0 0",LIKE50MB*2);//	close(fd);	outfn(f);	return open("/n/ram/testdisk.img",OWRITE|OREAD);} intsproc(char *execf, char *args[]){	Fn *f = infn("sproc");	int pid;	if((pid = fork()) == 0){		Fn *f2 = infn(smprint("sproc [pid %d]",getpid()));		action(f2,smprint("calling %s",execf));		int x = exec(execf,args);		char *s = malloc(sizeof(char)*1024);		if(s == nil)			upanic(f2,"unable to malloc");		errstr(s,1024);		upanic(f2,smprint("unable to exec. retval = %d, errstr = %s",x,s));	}	outfn(f);	return pid;} intcrucify(int pid){	Fn *f = infn("crucify");	int fd = open(smprint("/proc/%d/ctl"),OWRITE);	if(fd<0)		return -1;	fprint(fd,"kill\n");	close(fd);	action(f,smprint("the process %d met his destiny.",pid));	outfn(f);	return 0;}