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/*
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://zfsonlinux.org/>.
*
* The SPL is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _SPL_VNODE_H
#define _SPL_VNODE_H
#include <linux/module.h>
#include <linux/syscalls.h>
#include <linux/fcntl.h>
#include <linux/buffer_head.h>
#include <linux/dcache.h>
#include <linux/namei.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/fs_struct.h>
#include <linux/mount.h>
#include <sys/kmem.h>
#include <sys/mutex.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/user.h>
/*
* Prior to linux-2.6.33 only O_DSYNC semantics were implemented and
* they used the O_SYNC flag. As of linux-2.6.33 the this behavior
* was properly split in to O_SYNC and O_DSYNC respectively.
*/
#ifndef O_DSYNC
#define O_DSYNC O_SYNC
#endif
#define FREAD 1
#define FWRITE 2
#define FCREAT O_CREAT
#define FTRUNC O_TRUNC
#define FOFFMAX O_LARGEFILE
#define FSYNC O_SYNC
#define FDSYNC O_DSYNC
#define FRSYNC O_SYNC
#define FEXCL O_EXCL
#define FDIRECT O_DIRECT
#define FAPPEND O_APPEND
#define FNODSYNC 0x10000 /* fsync pseudo flag */
#define FNOFOLLOW 0x20000 /* don't follow symlinks */
#define F_FREESP 11 /* Free file space */
/*
* The vnode AT_ flags are mapped to the Linux ATTR_* flags.
* This allows them to be used safely with an iattr structure.
* The AT_XVATTR flag has been added and mapped to the upper
* bit range to avoid conflicting with the standard Linux set.
*/
#undef AT_UID
#undef AT_GID
#define AT_MODE ATTR_MODE
#define AT_UID ATTR_UID
#define AT_GID ATTR_GID
#define AT_SIZE ATTR_SIZE
#define AT_ATIME ATTR_ATIME
#define AT_MTIME ATTR_MTIME
#define AT_CTIME ATTR_CTIME
#define ATTR_XVATTR (1U << 31)
#define AT_XVATTR ATTR_XVATTR
#define ATTR_IATTR_MASK (ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_SIZE | \
ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_FILE)
#define CRCREAT 0x01
#define RMFILE 0x02
#define B_INVAL 0x01
#define B_TRUNC 0x02
#define LOOKUP_DIR 0x01
#define LOOKUP_XATTR 0x02
#define CREATE_XATTR_DIR 0x04
#define ATTR_NOACLCHECK 0x20
typedef enum vtype {
VNON = 0,
VREG = 1,
VDIR = 2,
VBLK = 3,
VCHR = 4,
VLNK = 5,
VFIFO = 6,
VDOOR = 7,
VPROC = 8,
VSOCK = 9,
VPORT = 10,
VBAD = 11
} vtype_t;
typedef struct vattr {
enum vtype va_type; /* vnode type */
uint32_t va_mask; /* attribute bit-mask */
ushort_t va_mode; /* acc mode */
uid_t va_uid; /* owner uid */
gid_t va_gid; /* owner gid */
long va_fsid; /* fs id */
long va_nodeid; /* node # */
uint32_t va_nlink; /* # links */
uint64_t va_size; /* file size */
inode_timespec_t va_atime; /* last acc */
inode_timespec_t va_mtime; /* last mod */
inode_timespec_t va_ctime; /* last chg */
dev_t va_rdev; /* dev */
uint64_t va_nblocks; /* space used */
uint32_t va_blksize; /* block size */
uint32_t va_seq; /* sequence */
struct dentry *va_dentry; /* dentry to wire */
} vattr_t;
typedef struct vnode {
struct file *v_file;
kmutex_t v_lock; /* protects vnode fields */
uint_t v_flag; /* vnode flags (see below) */
uint_t v_count; /* reference count */
void *v_data; /* private data for fs */
struct vfs *v_vfsp; /* ptr to containing VFS */
struct stdata *v_stream; /* associated stream */
enum vtype v_type; /* vnode type */
dev_t v_rdev; /* device (VCHR, VBLK) */
gfp_t v_gfp_mask; /* original mapping gfp mask */
} vnode_t;
typedef struct vn_file {
int f_fd; /* linux fd for lookup */
struct task_struct *f_task; /* linux task this fd belongs to */
struct file *f_file; /* linux file struct */
atomic_t f_ref; /* ref count */
kmutex_t f_lock; /* struct lock */
loff_t f_offset; /* offset */
vnode_t *f_vnode; /* vnode */
struct list_head f_list; /* list referenced file_t's */
} file_t;
extern vnode_t *vn_alloc(int flag);
void vn_free(vnode_t *vp);
extern vtype_t vn_mode_to_vtype(mode_t);
extern mode_t vn_vtype_to_mode(vtype_t);
extern int vn_open(const char *path, uio_seg_t seg, int flags, int mode,
vnode_t **vpp, int x1, void *x2);
extern int vn_openat(const char *path, uio_seg_t seg, int flags, int mode,
vnode_t **vpp, int x1, void *x2, vnode_t *vp, int fd);
extern int vn_rdwr(uio_rw_t uio, vnode_t *vp, void *addr, ssize_t len,
offset_t off, uio_seg_t seg, int x1, rlim64_t x2,
void *x3, ssize_t *residp);
extern int vn_close(vnode_t *vp, int flags, int x1, int x2, void *x3, void *x4);
extern int vn_seek(vnode_t *vp, offset_t o, offset_t *op, void *ct);
extern int vn_getattr(vnode_t *vp, vattr_t *vap, int flags, void *x3, void *x4);
extern int vn_fsync(vnode_t *vp, int flags, void *x3, void *x4);
extern int vn_space(vnode_t *vp, int cmd, struct flock *bfp, int flag,
offset_t offset, void *x6, void *x7);
extern file_t *vn_getf(int fd);
extern void vn_releasef(int fd);
extern void vn_areleasef(int fd, uf_info_t *fip);
extern int vn_set_pwd(const char *filename);
int spl_vn_init(void);
void spl_vn_fini(void);
#define VOP_CLOSE vn_close
#define VOP_SEEK vn_seek
#define VOP_GETATTR vn_getattr
#define VOP_FSYNC vn_fsync
#define VOP_SPACE vn_space
#define VOP_PUTPAGE(vp, o, s, f, x1, x2) ((void)0)
#define vn_is_readonly(vp) 0
#define getf vn_getf
#define releasef vn_releasef
#define areleasef vn_areleasef
extern vnode_t *rootdir;
#endif /* SPL_VNODE_H */
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