WebSVN – HelenOS – Diff – //trunk/uspace/srv/vfs/vfs_ops.c



    free(opts);
}
 
void vfs_open(ipc_callid_t rid, ipc_call_t *request)
{
 
 
    if (!vfs_files_init()) {
        ipc_answer_0(rid, ENOMEM);
 
        return;
    }
 
    /*
     * The POSIX interface is open(path, oflag, mode).

     * L_DIRECTORY.
     */
    if ((lflag & (L_FILE | L_DIRECTORY)) == 0 ||
        (lflag & (L_FILE | L_DIRECTORY)) == (L_FILE | L_DIRECTORY)) {
        ipc_answer_0(rid, EINVAL);
 
        return;
    }
 
    if (oflag & O_CREAT)
        lflag |= L_CREATE;

    ipc_callid_t callid;
 
    if (!ipc_data_write_receive(&callid, &len)) {
        ipc_answer_0(callid, EINVAL);
        ipc_answer_0(rid, EINVAL);
 
        return;
    }
    char *path = malloc(len + 1);
    if (!path) {
        ipc_answer_0(callid, ENOMEM);
        ipc_answer_0(rid, ENOMEM);
 
        return;
    }
    int rc;
    if ((rc = ipc_data_write_finalize(callid, path, len))) {
        ipc_answer_0(rid, rc);
        free(path);
 
        return;
    }
    path[len] = '\0';
   
    /*

            rwlock_write_unlock(&namespace_rwlock);
        else
            rwlock_read_unlock(&namespace_rwlock);
        ipc_answer_0(rid, rc);
        free(path);
 
        return;
    }
 
    /* Path is no longer needed. */
    free(path);

                node->dev_handle, node->index, 0);
            if (rc) {
                rwlock_write_unlock(&node->contents_rwlock);
                vfs_node_put(node);
                ipc_answer_0(rid, rc);
 
                return;
            }
            node->size = 0;
        }
        rwlock_write_unlock(&node->contents_rwlock);

     */
    int fd = vfs_fd_alloc();
    if (fd < 0) {
        vfs_node_put(node);
        ipc_answer_0(rid, fd);
 
        return;
    }
    vfs_file_t *file = vfs_file_get(fd);
    file->node = node;
    if (oflag & O_APPEND)

    vfs_node_addref(node);
    vfs_node_put(node);
 
    /* Success! Return the new file descriptor to the client. */
    ipc_answer_1(rid, EOK, fd);
 
}
 
void vfs_close(ipc_callid_t rid, ipc_call_t *request)
{
    int fd = IPC_GET_ARG1(*request);

Rev 4443	Rev 4445
Line 484...	Line 484...
484	free(opts);	484	free(opts);
485	}	485	}
486		486
487	void vfs_open(ipc_callid_t rid, ipc_call_t *request)	487	void vfs_open(ipc_callid_t rid, ipc_call_t *request)
488	{	488	{
489	async_serialize_start();	-
490		-
491	if (!vfs_files_init()) {	489	if (!vfs_files_init()) {
492	ipc_answer_0(rid, ENOMEM);	490	ipc_answer_0(rid, ENOMEM);
493	async_serialize_end();	-
494	return;	491	return;
495	}	492	}
496		493
497	/*	494	/*
498	* The POSIX interface is open(path, oflag, mode).	495	* The POSIX interface is open(path, oflag, mode).
Line 512...	Line 509...
512	* L_DIRECTORY.	509	* L_DIRECTORY.
513	*/	510	*/
514	if ((lflag & (L_FILE \| L_DIRECTORY)) == 0 \|\|	511	if ((lflag & (L_FILE \| L_DIRECTORY)) == 0 \|\|
515	(lflag & (L_FILE \| L_DIRECTORY)) == (L_FILE \| L_DIRECTORY)) {	512	(lflag & (L_FILE \| L_DIRECTORY)) == (L_FILE \| L_DIRECTORY)) {
516	ipc_answer_0(rid, EINVAL);	513	ipc_answer_0(rid, EINVAL);
517	async_serialize_end();	-
518	return;	514	return;
519	}	515	}
520		516
521	if (oflag & O_CREAT)	517	if (oflag & O_CREAT)
522	lflag \|= L_CREATE;	518	lflag \|= L_CREATE;
Line 526...	Line 522...
526	ipc_callid_t callid;	522	ipc_callid_t callid;
527		523
528	if (!ipc_data_write_receive(&callid, &len)) {	524	if (!ipc_data_write_receive(&callid, &len)) {
529	ipc_answer_0(callid, EINVAL);	525	ipc_answer_0(callid, EINVAL);
530	ipc_answer_0(rid, EINVAL);	526	ipc_answer_0(rid, EINVAL);
531	async_serialize_end();	-
532	return;	527	return;
533	}	528	}
534	char *path = malloc(len + 1);	529	char *path = malloc(len + 1);
535	if (!path) {	530	if (!path) {
536	ipc_answer_0(callid, ENOMEM);	531	ipc_answer_0(callid, ENOMEM);
537	ipc_answer_0(rid, ENOMEM);	532	ipc_answer_0(rid, ENOMEM);
538	async_serialize_end();	-
539	return;	533	return;
540	}	534	}
541	int rc;	535	int rc;
542	if ((rc = ipc_data_write_finalize(callid, path, len))) {	536	if ((rc = ipc_data_write_finalize(callid, path, len))) {
543	ipc_answer_0(rid, rc);	537	ipc_answer_0(rid, rc);
544	free(path);	538	free(path);
545	async_serialize_end();	-
546	return;	539	return;
547	}	540	}
548	path[len] = '\0';	541	path[len] = '\0';
549		542
550	/*	543	/*
Line 565...	Line 558...
565	rwlock_write_unlock(&namespace_rwlock);	558	rwlock_write_unlock(&namespace_rwlock);
566	else	559	else
567	rwlock_read_unlock(&namespace_rwlock);	560	rwlock_read_unlock(&namespace_rwlock);
568	ipc_answer_0(rid, rc);	561	ipc_answer_0(rid, rc);
569	free(path);	562	free(path);
570	async_serialize_end();	-
571	return;	563	return;
572	}	564	}
573		565
574	/* Path is no longer needed. */	566	/* Path is no longer needed. */
575	free(path);	567	free(path);
Line 588...	Line 580...
588	node->dev_handle, node->index, 0);	580	node->dev_handle, node->index, 0);
589	if (rc) {	581	if (rc) {
590	rwlock_write_unlock(&node->contents_rwlock);	582	rwlock_write_unlock(&node->contents_rwlock);
591	vfs_node_put(node);	583	vfs_node_put(node);
592	ipc_answer_0(rid, rc);	584	ipc_answer_0(rid, rc);
593	async_serialize_end();	-
594	return;	585	return;
595	}	586	}
596	node->size = 0;	587	node->size = 0;
597	}	588	}
598	rwlock_write_unlock(&node->contents_rwlock);	589	rwlock_write_unlock(&node->contents_rwlock);
Line 604...	Line 595...
604	*/	595	*/
605	int fd = vfs_fd_alloc();	596	int fd = vfs_fd_alloc();
606	if (fd < 0) {	597	if (fd < 0) {
607	vfs_node_put(node);	598	vfs_node_put(node);
608	ipc_answer_0(rid, fd);	599	ipc_answer_0(rid, fd);
609	async_serialize_end();	-
610	return;	600	return;
611	}	601	}
612	vfs_file_t *file = vfs_file_get(fd);	602	vfs_file_t *file = vfs_file_get(fd);
613	file->node = node;	603	file->node = node;
614	if (oflag & O_APPEND)	604	if (oflag & O_APPEND)
Line 624...	Line 614...
624	vfs_node_addref(node);	614	vfs_node_addref(node);
625	vfs_node_put(node);	615	vfs_node_put(node);
626		616
627	/* Success! Return the new file descriptor to the client. */	617	/* Success! Return the new file descriptor to the client. */
628	ipc_answer_1(rid, EOK, fd);	618	ipc_answer_1(rid, EOK, fd);
629	async_serialize_end();	-
630	}	619	}
631		620
632	void vfs_close(ipc_callid_t rid, ipc_call_t *request)	621	void vfs_close(ipc_callid_t rid, ipc_call_t *request)
633	{	622	{
634	int fd = IPC_GET_ARG1(*request);	623	int fd = IPC_GET_ARG1(*request);

Subversion Repositories HelenOS

(root)//trunk/uspace/srv/vfs/vfs_ops.c – Rev 4443 → 4445