| /* |
| * 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 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); |
| |
| 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 */ |