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#ifndef __CODA_PSDEV_H
#define __CODA_PSDEV_H
#define CODA_PSDEV_MAJOR 67
#define MAX_CODADEVS 5 /* how many do we allow */
extern struct venus_comm coda_upc_comm;
extern struct coda_sb_info coda_super_info;
#define CODA_SUPER_MAGIC 0x73757245
struct coda_sb_info
{
struct inode * sbi_psdev; /* /dev/cfs? Venus/kernel device */
struct inode * sbi_ctlcp; /* control magic file */
int sbi_refct;
struct venus_comm * sbi_vcomm;
struct inode * sbi_root;
struct super_block *sbi_sb;
struct list_head sbi_cchead;
struct list_head sbi_volroothead;
};
/* communication pending/processing queues */
struct venus_comm {
u_long vc_seq;
wait_queue_head_t vc_waitq; /* Venus wait queue */
struct list_head vc_pending;
struct list_head vc_processing;
int vc_inuse;
pid_t vc_pid; /* Venus pid */
};
static inline struct coda_sb_info *coda_sbp(struct super_block *sb)
{
return ((struct coda_sb_info *)((sb)->u.generic_sbp));
}
extern void coda_psdev_detach(int unit);
extern int init_coda_psdev(void);
/* upcalls */
int venus_rootfid(struct super_block *sb, ViceFid *fidp);
int venus_getattr(struct super_block *sb, struct ViceFid *fid,
struct coda_vattr *attr);
int venus_setattr(struct super_block *, struct ViceFid *,
struct coda_vattr *);
int venus_lookup(struct super_block *sb, struct ViceFid *fid,
const char *name, int length, int *type,
struct ViceFid *resfid);
int venus_release(struct super_block *sb, struct ViceFid *fid, int flags,
struct coda_cred *);
int venus_open(struct super_block *sb, struct ViceFid *fid,
int flags, ino_t *ino, dev_t *dev);
int venus_mkdir(struct super_block *sb, struct ViceFid *dirfid,
const char *name, int length,
struct ViceFid *newfid, struct coda_vattr *attrs);
int venus_create(struct super_block *sb, struct ViceFid *dirfid,
const char *name, int length, int excl, int mode, int rdev,
struct ViceFid *newfid, struct coda_vattr *attrs) ;
int venus_rmdir(struct super_block *sb, struct ViceFid *dirfid,
const char *name, int length);
int venus_remove(struct super_block *sb, struct ViceFid *dirfid,
const char *name, int length);
int venus_readlink(struct super_block *sb, struct ViceFid *fid,
char *buffer, int *length);
int venus_rename(struct super_block *, struct ViceFid *new_fid,
struct ViceFid *old_fid, size_t old_length,
size_t new_length, const char *old_name,
const char *new_name);
int venus_link(struct super_block *sb, struct ViceFid *fid,
struct ViceFid *dirfid, const char *name, int len );
int venus_symlink(struct super_block *sb, struct ViceFid *fid,
const char *name, int len, const char *symname, int symlen);
int venus_access(struct super_block *sb, struct ViceFid *fid, int mask);
int venus_pioctl(struct super_block *sb, struct ViceFid *fid,
unsigned int cmd, struct PioctlData *data);
int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
int venus_fsync(struct super_block *sb, struct ViceFid *fid);
int venus_statfs(struct super_block *sb, struct statfs *sfs);
/* messages between coda filesystem in kernel and Venus */
extern int coda_hard;
extern unsigned long coda_timeout;
struct upc_req {
struct list_head uc_chain;
caddr_t uc_data;
u_short uc_flags;
u_short uc_inSize; /* Size is at most 5000 bytes */
u_short uc_outSize;
u_short uc_opcode; /* copied from data to save lookup */
int uc_unique;
wait_queue_head_t uc_sleep; /* process' wait queue */
unsigned long uc_posttime;
};
#define REQ_ASYNC 0x1
#define REQ_READ 0x2
#define REQ_WRITE 0x4
/*
* Statistics
*/
struct coda_upcallstats {
int ncalls; /* client requests */
int nbadcalls; /* upcall failures */
int reqs[CODA_NCALLS]; /* count of each request */
} ;
extern struct coda_upcallstats coda_callstats;
static inline void clstats(int opcode)
{
coda_callstats.ncalls++;
if ( (0 <= opcode) && (opcode <= CODA_NCALLS) )
coda_callstats.reqs[opcode]++;
else
printk("clstats called with bad opcode %d\n", opcode);
}
static inline void badclstats(void)
{
coda_callstats.nbadcalls++;
}
#endif
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