1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __CODA_PSDEV_H
3 #define __CODA_PSDEV_H
4
5 #include <linux/backing-dev.h>
6 #include <linux/mutex.h>
7 #include <uapi/linux/coda_psdev.h>
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 struct mutex vc_mutex;
20 };
21
22 /* messages between coda filesystem in kernel and Venus */
23 struct upc_req {
24 struct list_head uc_chain;
25 caddr_t uc_data;
26 u_short uc_flags;
27 u_short uc_inSize; /* Size is at most 5000 bytes */
28 u_short uc_outSize;
29 u_short uc_opcode; /* copied from data to save lookup */
30 int uc_unique;
31 wait_queue_head_t uc_sleep; /* process' wait queue */
32 };
33
coda_vcp(struct super_block * sb)34 static inline struct venus_comm *coda_vcp(struct super_block *sb)
35 {
36 return (struct venus_comm *)((sb)->s_fs_info);
37 }
38
39 /* upcalls */
40 int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
41 int venus_getattr(struct super_block *sb, struct CodaFid *fid,
42 struct coda_vattr *attr);
43 int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
44 int venus_lookup(struct super_block *sb, struct CodaFid *fid,
45 const char *name, int length, int *type,
46 struct CodaFid *resfid);
47 int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
48 kuid_t uid);
49 int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
50 struct file **f);
51 int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
52 const char *name, int length,
53 struct CodaFid *newfid, struct coda_vattr *attrs);
54 int venus_create(struct super_block *sb, struct CodaFid *dirfid,
55 const char *name, int length, int excl, int mode,
56 struct CodaFid *newfid, struct coda_vattr *attrs) ;
57 int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
58 const char *name, int length);
59 int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
60 const char *name, int length);
61 int venus_readlink(struct super_block *sb, struct CodaFid *fid,
62 char *buffer, int *length);
63 int venus_rename(struct super_block *, struct CodaFid *new_fid,
64 struct CodaFid *old_fid, size_t old_length,
65 size_t new_length, const char *old_name,
66 const char *new_name);
67 int venus_link(struct super_block *sb, struct CodaFid *fid,
68 struct CodaFid *dirfid, const char *name, int len );
69 int venus_symlink(struct super_block *sb, struct CodaFid *fid,
70 const char *name, int len, const char *symname, int symlen);
71 int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
72 int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
73 unsigned int cmd, struct PioctlData *data);
74 int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out);
75 int venus_fsync(struct super_block *sb, struct CodaFid *fid);
76 int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
77
78 /*
79 * Statistics
80 */
81
82 extern struct venus_comm coda_comms[];
83 #endif
84