C++ (Cpp) sp_alloc_rread Examples

Example #1

File: ufs.c Project: BillTheBest/Open-Vertex

static Spfcall*
ufs_read(Spfid *fid, u64 offset, u32 count, Spreq *req)
{
    int n;
    Fid *f;
    Spfcall *ret;

    f = fid->aux;
    ret = sp_alloc_rread(count);
    if (f->dir)
        n = ufs_read_dir(fid, ret->data, offset, count, fid->conn->dotu);
    else {
        n = pread(f->fd, ret->data, count, offset);
        if (n < 0)
            create_rerror(errno);
    }

    if (sp_haserror()) {
        free(ret);
        ret = NULL;
    } else
        sp_set_rread_count(ret, n);

    return ret;
}

Example #2

File: ufs.c Project: Meticulus/vendor_st-ericsson_u8500

static Spfcall*
npfs_read(Spfid *fid, u64 offset, u32 count, Spreq *req)
{
	int n;
	Fid *f;
	Spfcall *ret;

	f = fid->aux;
	ret = sp_alloc_rread(count);
	npfs_change_user(fid->user);
	if (f->dir)
		n = npfs_read_dir(f, ret->data, offset, count, fid->conn->dotu);
	else {
		if(mmapreads) {
			struct stat s;
			n = count;
			if(!f->aux) {
				fstat(f->fd, &s);
				f->aux=mmap(0, s.st_size, PROT_READ, 
						MAP_SHARED, f->fd, 0);
				if(f->aux < 0) {
					create_rerror(errno);
					goto error;	
				}
			}
			if(offset+count > s.st_size)
				n = s.st_size-offset;
			if(n>0)
				memcpy(ret->data, f->aux+offset, n);
			else 
				n = 0;
		} else {
			n = pread(f->fd, ret->data, count, offset);
			if (n < 0)
				create_rerror(errno);
		}
	}

error:
	if (sp_haserror()) {
		free(ret);
		ret = NULL;
	} else
		sp_set_rread_count(ret, n);

	return ret;
}

Example #3

File: fcall.c Project: BillTheBest/Open-Vertex

Spfcall *
sp_read(Spreq *req, Spfcall *tc)
{
	int n;
	Spconn *conn;
	Spfid *fid;
	Spfcall *rc;

	rc = NULL;
	conn = req->conn;
	fid = sp_fid_find(conn, tc->fid);
	if (!fid) {
		sp_werror(Eunknownfid, EIO);
		goto done;
	} else 
		sp_fid_incref(fid);

	req->fid = fid;
	if (tc->count+IOHDRSZ > conn->msize) {
		sp_werror(Etoolarge, EIO);
		goto done;
	}

	if (fid->type&Qtauth) {
		if (conn->srv->auth) {
			rc = sp_alloc_rread(tc->count);
			if (!rc)
				goto done;

			n = conn->srv->auth->read(fid, tc->offset, tc->count, rc->data);
			if (n >= 0) 
				sp_set_rread_count(rc, n);
			else {
				free(rc);
				rc = NULL;
			}
		} else
			sp_werror(Ebadusefid, EIO);

		goto done;
	}

	if (fid->omode==(u16)~0 || (fid->omode&3)==Owrite) {
		sp_werror(Ebadusefid, EIO);
		goto done;
	}

	if (fid->type&Qtdir && tc->offset != fid->diroffset) {
		sp_werror(Ebadoffset, EIO);
		goto done;
	}
		
	rc = (*conn->srv->read)(fid, tc->offset, tc->count, req);

/*
	if (rc && rc->id==Rread && fid->type&Qtdir) {
		fid->diroffset = tc->offset + rc->count;
	}
*/

done:
	return rc;
}