Re: [9fans] lib9p help

[Gabriel Diaz <gabidiaz@gmail.com>]

Hello,

i can see the Tcreate messages in ramfs, but not in my buggy test.

ramfs has it's own loop, may be it uses something like file/tree structures
but the ramfs.c i have here doesn't have a  #include <9p.h>.

using chatty i see that ramfs has a Rwalk messagfe with a newquid and
then the Tcreate
message, while in the test with 9p.h i never got it, so it fails.

i have other tests with more fscalls implemented, but i should see
here the Rwalk message and the Tcreate message?

thanks

gabi


my test fs.c is like:

/*
 * test1
 */

#include <u.h>
#include <libc.h>
#include <bio.h>
#include <auth.h>
#include <fcall.h>
#include <thread.h>
#include <9p.h>


Tree * tree;
File *ctlroot;

Srv fs;

static void
usage(void)
{
	fprint(2, "usage: fs [-abcC] [-m mtpt]\n");
	exits("usage");
}

void
main(int argc, char **argv)
{

	ulong flag;
	char *mtpt;

	flag = 0;
	mtpt = "/mnt/test";
	ARGBEGIN{
	case 'D':
		chatty9p++;
		break;
	case 'a':
		flag |= MAFTER;
		break;
	case 'b':
		flag |= MBEFORE;
		break;
	case 'c':
		flag |= MCREATE;
		break;
	case 'C':
		flag |= MCACHE;
		break;
	case 'm':
		mtpt = ARGF();
		break;
	default:
		usage();
		break;
	}ARGEND;

	if(argc != 0)
		usage();
	if ( flag == 0 )
		flag = MAFTER;

	tree = fs.tree = alloctree(getuser(), "sys", DMDIR|0775,nil);
	ctlroot = createfile(fs.tree->root,"ctl",getuser(),0666,nil);

	postmountsrv(&fs, nil, mtpt, flag);
	exits(0);
}


On 2/17/06, Russ Cox <rsc@swtch.com> wrote:
> > always fails when using lib9p. i though i need to provide walk1 and
> > clone to create
> > directories that doesn't exists. Using the chatty option all messages are walks
> > when doing mkdirs abd when touching a file.
>
> i don't believe that.  there should be Tcreate messages too.
>
> /sys/src/lib9p/ramfs.c uses file/tree structures
> (and allows creation of new files).  9p(2) says
>
>           Create
>                The create function must fill in both r->fid->qid and
>                r->ofcall.qid on success.  When using file trees,
>                create should allocate a new File with createfile; note
>                that createfile may return nil (because, say, the file
>                already exists).  If the create function is nil, srv
>                behaves as though it were a function that always
>                responded with the error ``create prohibited''.
>
> russ
>
>