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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __CODA_PSDEV_H
2#define __CODA_PSDEV_H
3
Jeff Garzike18fa702006-09-24 11:13:19 -04004#include <linux/magic.h>
5
Linus Torvalds1da177e2005-04-16 15:20:36 -07006#define CODA_PSDEV_MAJOR 67
7#define MAX_CODADEVS 5 /* how many do we allow */
8
Jaswinder Singh Rajputf2cddb22009-02-03 19:21:38 +05309#ifdef __KERNEL__
Jens Axboe33f60e92010-04-28 09:20:33 +020010#include <linux/backing-dev.h>
11
Linus Torvalds1da177e2005-04-16 15:20:36 -070012struct kstatfs;
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014/* communication pending/processing queues */
15struct venus_comm {
16 u_long vc_seq;
17 wait_queue_head_t vc_waitq; /* Venus wait queue */
18 struct list_head vc_pending;
19 struct list_head vc_processing;
20 int vc_inuse;
21 struct super_block *vc_sb;
Jens Axboe5163d902010-04-22 12:12:40 +020022 struct backing_dev_info bdi;
Linus Torvalds1da177e2005-04-16 15:20:36 -070023};
24
25
Jan Harkesa1b0aa82007-07-19 01:48:50 -070026static inline struct venus_comm *coda_vcp(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -070027{
Jan Harkesa1b0aa82007-07-19 01:48:50 -070028 return (struct venus_comm *)((sb)->s_fs_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -070029}
30
Linus Torvalds1da177e2005-04-16 15:20:36 -070031/* upcalls */
32int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
33int venus_getattr(struct super_block *sb, struct CodaFid *fid,
34 struct coda_vattr *attr);
35int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
36int venus_lookup(struct super_block *sb, struct CodaFid *fid,
37 const char *name, int length, int *type,
38 struct CodaFid *resfid);
Linus Torvalds1da177e2005-04-16 15:20:36 -070039int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
40 vuid_t uid);
41int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
42 struct file **f);
43int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
44 const char *name, int length,
45 struct CodaFid *newfid, struct coda_vattr *attrs);
46int venus_create(struct super_block *sb, struct CodaFid *dirfid,
47 const char *name, int length, int excl, int mode,
48 struct CodaFid *newfid, struct coda_vattr *attrs) ;
49int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
50 const char *name, int length);
51int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
52 const char *name, int length);
53int venus_readlink(struct super_block *sb, struct CodaFid *fid,
54 char *buffer, int *length);
55int venus_rename(struct super_block *, struct CodaFid *new_fid,
56 struct CodaFid *old_fid, size_t old_length,
57 size_t new_length, const char *old_name,
58 const char *new_name);
59int venus_link(struct super_block *sb, struct CodaFid *fid,
60 struct CodaFid *dirfid, const char *name, int len );
61int venus_symlink(struct super_block *sb, struct CodaFid *fid,
62 const char *name, int len, const char *symname, int symlen);
63int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
64int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
65 unsigned int cmd, struct PioctlData *data);
66int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
67int venus_fsync(struct super_block *sb, struct CodaFid *fid);
David Howells726c3342006-06-23 02:02:58 -070068int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Jaswinder Singh Rajput7e7f4ea2009-02-02 21:40:10 +053070/*
71 * Statistics
72 */
73
74extern struct venus_comm coda_comms[];
75#endif /* __KERNEL__ */
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
77/* messages between coda filesystem in kernel and Venus */
Linus Torvalds1da177e2005-04-16 15:20:36 -070078struct upc_req {
79 struct list_head uc_chain;
80 caddr_t uc_data;
81 u_short uc_flags;
82 u_short uc_inSize; /* Size is at most 5000 bytes */
83 u_short uc_outSize;
84 u_short uc_opcode; /* copied from data to save lookup */
85 int uc_unique;
86 wait_queue_head_t uc_sleep; /* process' wait queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -070087};
88
Jens Axboe4aeefdc2010-08-03 13:22:51 +020089#define CODA_REQ_ASYNC 0x1
90#define CODA_REQ_READ 0x2
91#define CODA_REQ_WRITE 0x4
92#define CODA_REQ_ABORT 0x8
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Linus Torvalds1da177e2005-04-16 15:20:36 -070094#endif