C++ (Cpp) ncp_search_for_file_or_subdir Exemples

Exemple #1

Fichier : nwfs_io.c Projet : dcui/FreeBSD-9.3_kernel

static int
nwfs_readvdir(struct vnode *vp, struct uio *uio, struct ucred *cred) {
	struct nwmount *nmp = VTONWFS(vp);
	int error, count, i;
	struct dirent dp;
	struct nwnode *np = VTONW(vp);
	struct nw_entry_info fattr;
	struct vnode *newvp;
	struct componentname cn;
	ncpfid fid;

	np = VTONW(vp);
	NCPVNDEBUG("dirname='%s'\n",np->n_name);
	if (uio->uio_resid < DE_SIZE || (uio->uio_offset < 0))
		return (EINVAL);
	error = 0;
	count = 0;
	i = uio->uio_offset / DE_SIZE; /* offset in directory */
	if (i == 0) {
		error = ncp_initsearch(vp, uio->uio_td, cred);
		if (error) {
			NCPVNDEBUG("cannot initialize search, error=%d",error);
			return( error );
		}
	}

	for (; uio->uio_resid >= DE_SIZE; i++) {
		bzero((char *) &dp, DE_SIZE);
		dp.d_reclen = DE_SIZE;
		switch (i) {
		    case 0:		/* `.' */
		    case 1:		/* `..' */
			dp.d_fileno = (i == 0) ? np->n_fid.f_id : np->n_parent.f_id;
			if (!dp.d_fileno) dp.d_fileno = NWFS_ROOT_INO;
			dp.d_namlen = i + 1;
			dp.d_name[0] = '.';
			dp.d_name[1] = '.';
			dp.d_name[i + 1] = '\0';
			dp.d_type = DT_DIR;
			break;
		    default:
			error = ncp_search_for_file_or_subdir(nmp, &np->n_seq, &fattr, uio->uio_td, cred);
			if (error && error < 0x80) break;
			dp.d_fileno = fattr.dirEntNum;
			dp.d_type = (fattr.attributes & aDIR) ? DT_DIR : DT_REG;
			dp.d_namlen = fattr.nameLen;
			bcopy(fattr.entryName, dp.d_name, dp.d_namlen);
			dp.d_name[dp.d_namlen] = '\0';
#if 0
			if (error && eofflag) {
			/*	*eofflag = 1;*/
				break;
			}
#endif
			break;
		}
		if (nwfs_fastlookup && !error && i > 1) {
			fid.f_id = fattr.dirEntNum;
			fid.f_parent = np->n_fid.f_id;
			error = nwfs_nget(vp->v_mount, fid, &fattr, vp, &newvp);
			if (!error) {
				VTONW(newvp)->n_ctime = VTONW(newvp)->n_vattr.va_ctime.tv_sec;
				cn.cn_nameptr = dp.d_name;
				cn.cn_namelen = dp.d_namlen;
				cache_enter(vp, newvp, &cn);
				vput(newvp);
			} else
				error = 0;
		}
		if (error >= 0x80) {
		    error = 0;
		    break;
		}
		if ((error = uiomove(&dp, DE_SIZE, uio)))
			break;
	}

	uio->uio_offset = i * DE_SIZE;
	return (error);
}

Exemple #2

Fichier : nwfs_io.c Projet : mihaicarabas/dragonfly

static int
nwfs_readvdir(struct vnode *vp, struct uio *uio, struct ucred *cred)
{
	struct nwmount *nmp = VTONWFS(vp);
	int error, i;
	struct nwnode *np;
	struct nw_entry_info fattr;
	struct vnode *newvp;
	ncpfid fid;
	ino_t d_ino;
	size_t d_namlen;
	const char *d_name;
	uint8_t d_type;

	np = VTONW(vp);
	NCPVNDEBUG("dirname='%s'\n",np->n_name);
	if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX)
		return (EINVAL);
	error = 0;
	i = (int)uio->uio_offset; /* offset in directory */
	if (i == 0) {
		error = ncp_initsearch(vp, uio->uio_td, cred);
		if (error) {
			NCPVNDEBUG("cannot initialize search, error=%d",error);
			return( error );
		}
	}

	for (; !error && uio->uio_resid > 0; i++) {
		switch (i) {
		    case 0:		/* `.' */
			d_ino = np->n_fid.f_id;
			if (d_ino == 0)
				d_ino = NWFS_ROOT_INO;
			d_namlen = 1;
			d_name = ".";
			d_type = DT_DIR;
			break;
		    case 1:		/* `..' */
			d_ino = np->n_parent.f_id;
			if (d_ino == 0)
				d_ino = NWFS_ROOT_INO;
			d_namlen = 2;
			d_name = "..";
			d_type = DT_DIR;
			break;
		    default:
			error = ncp_search_for_file_or_subdir(nmp, &np->n_seq, &fattr, uio->uio_td, cred);
			if (error && error < 0x80)
				goto done;
			d_ino = fattr.dirEntNum;
			d_type = (fattr.attributes & aDIR) ? DT_DIR : DT_REG;
			d_namlen = fattr.nameLen;
			d_name = fattr.entryName;
#if 0
			if (error && eofflag) {
			/*	*eofflag = 1;*/
			        break;
			}
#endif
			break;
		}
		if (nwfs_fastlookup && !error && i > 1) {
			fid.f_id = fattr.dirEntNum;
			fid.f_parent = np->n_fid.f_id;
			error = nwfs_nget(vp->v_mount, fid, &fattr, vp, &newvp);
			if (!error) {
				VTONW(newvp)->n_ctime = VTONW(newvp)->n_vattr.va_ctime.tv_sec;
				vput(newvp);
			} else
				error = 0;
		}
		if (error >= 0x80) {
		    error = 0;
		    break;
		}
		if (vop_write_dirent(&error, uio, d_ino, d_type, d_namlen, d_name))
			break;
	}
done:
	uio->uio_offset = i;
	return (error);
}