File: /usr/include/linux/coda_psdev.h
1 #ifndef __CODA_PSDEV_H
2 #define __CODA_PSDEV_H
3
4 #define CODA_PSDEV_MAJOR 67
5 #define MAX_CODADEVS 5 /* how many do we allow */
6
7 #define CODA_SUPER_MAGIC 0x73757245
8
9 struct coda_sb_info
10 {
11 struct venus_comm * sbi_vcomm;
12 struct super_block *sbi_sb;
13 struct list_head sbi_cihead;
14 };
15
16 /* communication pending/processing queues */
17 struct venus_comm {
18 u_long vc_seq;
19 wait_queue_head_t vc_waitq; /* Venus wait queue */
20 struct list_head vc_pending;
21 struct list_head vc_processing;
22 int vc_inuse;
23 struct super_block *vc_sb;
24 };
25
26
27 static inline struct coda_sb_info *coda_sbp(struct super_block *sb)
28 {
29 return ((struct coda_sb_info *)((sb)->u.generic_sbp));
30 }
31
32
33 /* upcalls */
34 int venus_rootfid(struct super_block *sb, ViceFid *fidp);
35 int venus_getattr(struct super_block *sb, struct ViceFid *fid,
36 struct coda_vattr *attr);
37 int venus_setattr(struct super_block *, struct ViceFid *,
38 struct coda_vattr *);
39 int venus_lookup(struct super_block *sb, struct ViceFid *fid,
40 const char *name, int length, int *type,
41 struct ViceFid *resfid);
42 int venus_release(struct super_block *sb, struct ViceFid *fid, int flags,
43 struct coda_cred *);
44 int venus_open(struct super_block *sb, struct ViceFid *fid,
45 int flags, ino_t *ino, dev_t *dev);
46 int venus_mkdir(struct super_block *sb, struct ViceFid *dirfid,
47 const char *name, int length,
48 struct ViceFid *newfid, struct coda_vattr *attrs);
49 int venus_create(struct super_block *sb, struct ViceFid *dirfid,
50 const char *name, int length, int excl, int mode, int rdev,
51 struct ViceFid *newfid, struct coda_vattr *attrs) ;
52 int venus_rmdir(struct super_block *sb, struct ViceFid *dirfid,
53 const char *name, int length);
54 int venus_remove(struct super_block *sb, struct ViceFid *dirfid,
55 const char *name, int length);
56 int venus_readlink(struct super_block *sb, struct ViceFid *fid,
57 char *buffer, int *length);
58 int venus_rename(struct super_block *, struct ViceFid *new_fid,
59 struct ViceFid *old_fid, size_t old_length,
60 size_t new_length, const char *old_name,
61 const char *new_name);
62 int venus_link(struct super_block *sb, struct ViceFid *fid,
63 struct ViceFid *dirfid, const char *name, int len );
64 int venus_symlink(struct super_block *sb, struct ViceFid *fid,
65 const char *name, int len, const char *symname, int symlen);
66 int venus_access(struct super_block *sb, struct ViceFid *fid, int mask);
67 int venus_pioctl(struct super_block *sb, struct ViceFid *fid,
68 unsigned int cmd, struct PioctlData *data);
69 int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
70 int venus_fsync(struct super_block *sb, struct ViceFid *fid);
71 int venus_statfs(struct super_block *sb, struct statfs *sfs);
72
73
74 /* messages between coda filesystem in kernel and Venus */
75 extern int coda_hard;
76 extern unsigned long coda_timeout;
77 struct upc_req {
78 struct list_head uc_chain;
79 caddr_t uc_data;
80 u_short uc_flags;
81 u_short uc_inSize; /* Size is at most 5000 bytes */
82 u_short uc_outSize;
83 u_short uc_opcode; /* copied from data to save lookup */
84 int uc_unique;
85 wait_queue_head_t uc_sleep; /* process' wait queue */
86 unsigned long uc_posttime;
87 };
88
89 #define REQ_ASYNC 0x1
90 #define REQ_READ 0x2
91 #define REQ_WRITE 0x4
92 #define REQ_ABORT 0x8
93
94
95 /*
96 * Statistics
97 */
98 struct coda_upcallstats {
99 int ncalls; /* client requests */
100 int nbadcalls; /* upcall failures */
101 int reqs[CODA_NCALLS]; /* count of each request */
102 } ;
103
104 extern struct coda_upcallstats coda_callstats;
105 extern struct venus_comm coda_comms[];
106
107 static inline void clstats(int opcode)
108 {
109 coda_callstats.ncalls++;
110 if ( (0 <= opcode) && (opcode <= CODA_NCALLS) )
111 coda_callstats.reqs[opcode]++;
112 else
113 printk("clstats called with bad opcode %d\n", opcode);
114 }
115
116 static inline void badclstats(void)
117 {
118 coda_callstats.nbadcalls++;
119 }
120
121 #endif
122