mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 18:31:00 +03:00
0a223246e1
struct pathname is originally from Solaris VFS, and it has been used in ZoL to merely call VOP from Linux VFS interface without API change, therefore pathname::pn_path* are unused and unneeded. Technically, struct pathname is a wrapper for C string in ZoL. Saves stack a bit on lookup and unlink. (#if0'd members instead of removing since comments refer to them.) Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Closes #9025
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
*/
|
|
|
|
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
|
|
/* All Rights Reserved */
|
|
|
|
/*
|
|
* Portions of this source code were derived from Berkeley 4.3 BSD
|
|
* under license from the Regents of the University of California.
|
|
*/
|
|
|
|
#ifndef _SYS_PATHNAME_H
|
|
#define _SYS_PATHNAME_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* Pathname structure.
|
|
* System calls that operate on path names gather the path name
|
|
* from the system call into this structure and reduce it by
|
|
* peeling off translated components. If a symbolic link is
|
|
* encountered the new path name to be translated is also
|
|
* assembled in this structure.
|
|
*
|
|
* By convention pn_buf is not changed once it's been set to point
|
|
* to the underlying storage; routines which manipulate the pathname
|
|
* do so by changing pn_path and pn_pathlen. pn_pathlen is redundant
|
|
* since the path name is null-terminated, but is provided to make
|
|
* some computations faster.
|
|
*/
|
|
typedef struct pathname {
|
|
char *pn_buf; /* underlying storage */
|
|
#if 0 /* unused in ZoL */
|
|
char *pn_path; /* remaining pathname */
|
|
size_t pn_pathlen; /* remaining length */
|
|
#endif
|
|
size_t pn_bufsize; /* total size of pn_buf */
|
|
} pathname_t;
|
|
|
|
extern void pn_alloc(struct pathname *);
|
|
extern void pn_alloc_sz(struct pathname *, size_t);
|
|
extern void pn_free(struct pathname *);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_PATHNAME_H */
|