126 lines
4.0 KiB
C
126 lines
4.0 KiB
C
#ifndef __CODA_PSDEV_H
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#define __CODA_PSDEV_H
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#define CODA_PSDEV_MAJOR 67
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#define MAX_CODADEVS 5 /* how many do we allow */
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#define CODA_SUPER_MAGIC 0x73757245
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struct coda_sb_info
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{
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struct venus_comm * sbi_vcomm;
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struct super_block *sbi_sb;
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struct list_head sbi_cihead;
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struct semaphore sbi_iget4_mutex;
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};
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/* communication pending/processing queues */
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struct venus_comm {
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u_long vc_seq;
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wait_queue_head_t vc_waitq; /* Venus wait queue */
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struct list_head vc_pending;
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struct list_head vc_processing;
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int vc_inuse;
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struct super_block *vc_sb;
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};
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static inline struct coda_sb_info *coda_sbp(struct super_block *sb)
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{
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return ((struct coda_sb_info *)((sb)->u.generic_sbp));
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}
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/* upcalls */
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int venus_rootfid(struct super_block *sb, ViceFid *fidp);
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int venus_getattr(struct super_block *sb, struct ViceFid *fid,
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struct coda_vattr *attr);
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int venus_setattr(struct super_block *, struct ViceFid *,
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struct coda_vattr *);
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int venus_lookup(struct super_block *sb, struct ViceFid *fid,
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const char *name, int length, int *type,
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struct ViceFid *resfid);
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int venus_store(struct super_block *sb, struct ViceFid *fid, int flags,
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struct coda_cred *);
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int venus_release(struct super_block *sb, struct ViceFid *fid, int flags);
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int venus_close(struct super_block *sb, struct ViceFid *fid, int flags,
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struct coda_cred *);
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int venus_open(struct super_block *sb, struct ViceFid *fid,
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int flags, struct file **f);
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int venus_mkdir(struct super_block *sb, struct ViceFid *dirfid,
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const char *name, int length,
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struct ViceFid *newfid, struct coda_vattr *attrs);
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int venus_create(struct super_block *sb, struct ViceFid *dirfid,
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const char *name, int length, int excl, int mode, int rdev,
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struct ViceFid *newfid, struct coda_vattr *attrs) ;
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int venus_rmdir(struct super_block *sb, struct ViceFid *dirfid,
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const char *name, int length);
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int venus_remove(struct super_block *sb, struct ViceFid *dirfid,
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const char *name, int length);
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int venus_readlink(struct super_block *sb, struct ViceFid *fid,
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char *buffer, int *length);
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int venus_rename(struct super_block *, struct ViceFid *new_fid,
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struct ViceFid *old_fid, size_t old_length,
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size_t new_length, const char *old_name,
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const char *new_name);
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int venus_link(struct super_block *sb, struct ViceFid *fid,
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struct ViceFid *dirfid, const char *name, int len );
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int venus_symlink(struct super_block *sb, struct ViceFid *fid,
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const char *name, int len, const char *symname, int symlen);
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int venus_access(struct super_block *sb, struct ViceFid *fid, int mask);
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int venus_pioctl(struct super_block *sb, struct ViceFid *fid,
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unsigned int cmd, struct PioctlData *data);
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int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
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int venus_fsync(struct super_block *sb, struct ViceFid *fid);
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int venus_statfs(struct super_block *sb, struct statfs *sfs);
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/* messages between coda filesystem in kernel and Venus */
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extern int coda_hard;
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extern unsigned long coda_timeout;
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struct upc_req {
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struct list_head uc_chain;
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caddr_t uc_data;
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u_short uc_flags;
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u_short uc_inSize; /* Size is at most 5000 bytes */
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u_short uc_outSize;
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u_short uc_opcode; /* copied from data to save lookup */
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int uc_unique;
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wait_queue_head_t uc_sleep; /* process' wait queue */
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unsigned long uc_posttime;
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};
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#define REQ_ASYNC 0x1
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#define REQ_READ 0x2
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#define REQ_WRITE 0x4
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#define REQ_ABORT 0x8
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/*
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* Statistics
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*/
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struct coda_upcallstats {
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int ncalls; /* client requests */
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int nbadcalls; /* upcall failures */
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int reqs[CODA_NCALLS]; /* count of each request */
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} ;
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extern struct coda_upcallstats coda_callstats;
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extern struct venus_comm coda_comms[];
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static inline void clstats(int opcode)
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{
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coda_callstats.ncalls++;
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if ( (0 <= opcode) && (opcode <= CODA_NCALLS) )
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coda_callstats.reqs[opcode]++;
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else
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printk("clstats called with bad opcode %d\n", opcode);
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}
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static inline void badclstats(void)
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{
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coda_callstats.nbadcalls++;
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}
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#endif
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