1 #ifndef __CODA_PSDEV_H
2 #define __CODA_PSDEV_H
3
4 #include <linux/magic.h>
5
6 #define CODA_PSDEV_MAJOR 67
7 #define MAX_CODADEVS 5 /* how many do we allow */
8
9 struct kstatfs;
10
11 /* communication pending/processing queues */
12 struct venus_comm {
13 u_long vc_seq;
14 wait_queue_head_t vc_waitq; /* Venus wait queue */
15 struct list_head vc_pending;
16 struct list_head vc_processing;
17 int vc_inuse;
18 struct super_block *vc_sb;
19 };
20
21
coda_vcp(struct super_block * sb)22 static inline struct venus_comm *coda_vcp(struct super_block *sb)
23 {
24 return (struct venus_comm *)((sb)->s_fs_info);
25 }
26
27
28 /* upcalls */
29 int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
30 int venus_getattr(struct super_block *sb, struct CodaFid *fid,
31 struct coda_vattr *attr);
32 int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
33 int venus_lookup(struct super_block *sb, struct CodaFid *fid,
34 const char *name, int length, int *type,
35 struct CodaFid *resfid);
36 int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
37 vuid_t uid);
38 int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
39 struct file **f);
40 int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
41 const char *name, int length,
42 struct CodaFid *newfid, struct coda_vattr *attrs);
43 int venus_create(struct super_block *sb, struct CodaFid *dirfid,
44 const char *name, int length, int excl, int mode,
45 struct CodaFid *newfid, struct coda_vattr *attrs) ;
46 int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
47 const char *name, int length);
48 int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
49 const char *name, int length);
50 int venus_readlink(struct super_block *sb, struct CodaFid *fid,
51 char *buffer, int *length);
52 int venus_rename(struct super_block *, struct CodaFid *new_fid,
53 struct CodaFid *old_fid, size_t old_length,
54 size_t new_length, const char *old_name,
55 const char *new_name);
56 int venus_link(struct super_block *sb, struct CodaFid *fid,
57 struct CodaFid *dirfid, const char *name, int len );
58 int venus_symlink(struct super_block *sb, struct CodaFid *fid,
59 const char *name, int len, const char *symname, int symlen);
60 int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
61 int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
62 unsigned int cmd, struct PioctlData *data);
63 int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
64 int venus_fsync(struct super_block *sb, struct CodaFid *fid);
65 int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
66
67
68 /* messages between coda filesystem in kernel and Venus */
69 struct upc_req {
70 struct list_head uc_chain;
71 caddr_t uc_data;
72 u_short uc_flags;
73 u_short uc_inSize; /* Size is at most 5000 bytes */
74 u_short uc_outSize;
75 u_short uc_opcode; /* copied from data to save lookup */
76 int uc_unique;
77 wait_queue_head_t uc_sleep; /* process' wait queue */
78 };
79
80 #define REQ_ASYNC 0x1
81 #define REQ_READ 0x2
82 #define REQ_WRITE 0x4
83 #define REQ_ABORT 0x8
84
85
86 /*
87 * Statistics
88 */
89
90 extern struct venus_comm coda_comms[];
91
92 #endif
93