5ac3853a0d
pathname lookups. - Remove 'i_offset' and 'i_ino' from the ISO node structure and replace them with local variables in the lookup routine instead. - Cache a copy of 'i_diroff' for use during a lookup in a local variable. - Save a copy of the found directory entry in a malloc'd buffer after a successfull lookup before getting the vnode. This allows us to release the buffer holding the directory block before calling vget() which otherwise resulted in a LOR between "bufwait" and the vnode lock. - Use an inlined version of vn_vget_ino() to handle races with .. lookups. I had to inline the code here since cd9660 uses an internal vget routine to save a disk I/O that would otherwise re-read the directory block. - Honor the requested locking flags during lookups to allow for shared locking. - Honor the requested locking flags passed to VFS_ROOT() and VFS_VGET() similar to UFS. - Don't make every ISO 9660 vnode hold a reference on the vnode of the underlying device vnode of the mountpoint. The mountpoint already holds a suitable reference.
111 lines
4.2 KiB
C
111 lines
4.2 KiB
C
/*-
|
|
* Copyright (c) 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley
|
|
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
|
|
* Support code is derived from software contributed to Berkeley
|
|
* by Atsushi Murai (amurai@spec.co.jp).
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)cd9660_node.h 8.6 (Berkeley) 5/14/95
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Theoretically, directories can be more than 2Gb in length,
|
|
* however, in practice this seems unlikely. So, we define
|
|
* the type doff_t as a long to keep down the cost of doing
|
|
* lookup on a 32-bit machine. If you are porting to a 64-bit
|
|
* architecture, you should make doff_t the same as off_t.
|
|
*/
|
|
#define doff_t long
|
|
|
|
typedef struct {
|
|
struct timespec iso_atime; /* time of last access */
|
|
struct timespec iso_mtime; /* time of last modification */
|
|
struct timespec iso_ctime; /* time file changed */
|
|
u_short iso_mode; /* files access mode and type */
|
|
uid_t iso_uid; /* owner user id */
|
|
gid_t iso_gid; /* owner group id */
|
|
short iso_links; /* links of file */
|
|
dev_t iso_rdev; /* Major/Minor number for special */
|
|
} ISO_RRIP_INODE;
|
|
|
|
|
|
struct iso_node {
|
|
struct vnode *i_vnode; /* vnode associated with this inode */
|
|
ino_t i_number; /* the identity of the inode */
|
|
/* we use the actual starting block of the file */
|
|
struct iso_mnt *i_mnt; /* filesystem associated with this inode */
|
|
struct lockf *i_lockf; /* head of byte-level lock list */
|
|
doff_t i_endoff; /* end of useful stuff in directory */
|
|
doff_t i_diroff; /* offset in dir, where we found last entry */
|
|
|
|
long iso_extent; /* extent of file */
|
|
unsigned long i_size;
|
|
long iso_start; /* actual start of data of file (may be different */
|
|
/* from iso_extent, if file has extended attributes) */
|
|
ISO_RRIP_INODE inode;
|
|
};
|
|
|
|
#define i_forw i_chain[0]
|
|
#define i_back i_chain[1]
|
|
|
|
#define VTOI(vp) ((struct iso_node *)(vp)->v_data)
|
|
#define ITOV(ip) ((ip)->i_vnode)
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#ifdef MALLOC_DECLARE
|
|
MALLOC_DECLARE(M_ISOFSMNT);
|
|
MALLOC_DECLARE(M_ISOFSNODE);
|
|
#endif
|
|
|
|
struct buf;
|
|
struct vop_bmap_args;
|
|
struct vop_cachedlookup_args;
|
|
struct vop_inactive_args;
|
|
struct vop_reclaim_args;
|
|
|
|
/*
|
|
* Prototypes for ISOFS vnode operations
|
|
*/
|
|
int cd9660_lookup(struct vop_cachedlookup_args *);
|
|
int cd9660_inactive(struct vop_inactive_args *);
|
|
int cd9660_reclaim(struct vop_reclaim_args *);
|
|
int cd9660_bmap(struct vop_bmap_args *);
|
|
int cd9660_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp);
|
|
|
|
void cd9660_defattr(struct iso_directory_record *,
|
|
struct iso_node *, struct buf *, enum ISO_FTYPE);
|
|
void cd9660_deftstamp(struct iso_directory_record *,
|
|
struct iso_node *, struct buf *, enum ISO_FTYPE);
|
|
int cd9660_tstamp_conv7(u_char *, struct timespec *, enum ISO_FTYPE);
|
|
int cd9660_tstamp_conv17(u_char *, struct timespec *);
|
|
|
|
#endif /* _KERNEL */
|