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 #ifdef __KERNEL__
10 #include <linux/backing-dev.h>
11 #include <linux/mutex.h>
12
13 struct kstatfs;
14
15 /* communication pending/processing queues */
16 struct venus_comm {
17 u_long vc_seq;
18 wait_queue_head_t vc_waitq; /* Venus wait queue */
19 struct list_head vc_pending;
20 struct list_head vc_processing;
21 int vc_inuse;
22 struct super_block *vc_sb;
23 struct backing_dev_info bdi;
24 struct mutex vc_mutex;
25 };
26
27
coda_vcp(struct super_block * sb)28 static inline struct venus_comm *coda_vcp(struct super_block *sb)
29 {
30 return (struct venus_comm *)((sb)->s_fs_info);
31 }
32
33 /* upcalls */
34 int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
35 int venus_getattr(struct super_block *sb, struct CodaFid *fid,
36 struct coda_vattr *attr);
37 int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
38 int venus_lookup(struct super_block *sb, struct CodaFid *fid,
39 const char *name, int length, int *type,
40 struct CodaFid *resfid);
41 int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
42 vuid_t uid);
43 int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
44 struct file **f);
45 int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
46 const char *name, int length,
47 struct CodaFid *newfid, struct coda_vattr *attrs);
48 int venus_create(struct super_block *sb, struct CodaFid *dirfid,
49 const char *name, int length, int excl, int mode,
50 struct CodaFid *newfid, struct coda_vattr *attrs) ;
51 int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
52 const char *name, int length);
53 int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
54 const char *name, int length);
55 int venus_readlink(struct super_block *sb, struct CodaFid *fid,
56 char *buffer, int *length);
57 int venus_rename(struct super_block *, struct CodaFid *new_fid,
58 struct CodaFid *old_fid, size_t old_length,
59 size_t new_length, const char *old_name,
60 const char *new_name);
61 int venus_link(struct super_block *sb, struct CodaFid *fid,
62 struct CodaFid *dirfid, const char *name, int len );
63 int venus_symlink(struct super_block *sb, struct CodaFid *fid,
64 const char *name, int len, const char *symname, int symlen);
65 int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
66 int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
67 unsigned int cmd, struct PioctlData *data);
68 int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out);
69 int venus_fsync(struct super_block *sb, struct CodaFid *fid);
70 int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
71
72 /*
73 * Statistics
74 */
75
76 extern struct venus_comm coda_comms[];
77 #endif /* __KERNEL__ */
78
79 /* messages between coda filesystem in kernel and Venus */
80 struct upc_req {
81 struct list_head uc_chain;
82 caddr_t uc_data;
83 u_short uc_flags;
84 u_short uc_inSize; /* Size is at most 5000 bytes */
85 u_short uc_outSize;
86 u_short uc_opcode; /* copied from data to save lookup */
87 int uc_unique;
88 wait_queue_head_t uc_sleep; /* process' wait queue */
89 };
90
91 #define CODA_REQ_ASYNC 0x1
92 #define CODA_REQ_READ 0x2
93 #define CODA_REQ_WRITE 0x4
94 #define CODA_REQ_ABORT 0x8
95
96 #endif
97