coda_psdev.h
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上传日期:2013-02-24
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文件大小:4k
- #ifndef __CODA_PSDEV_H
- #define __CODA_PSDEV_H
- #define CODA_PSDEV_MAJOR 67
- #define MAX_CODADEVS 5 /* how many do we allow */
- #define CODA_SUPER_MAGIC 0x73757245
- struct coda_sb_info
- {
- struct venus_comm * sbi_vcomm;
- struct super_block *sbi_sb;
- struct list_head sbi_cihead;
- };
- /* 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;
- struct super_block *vc_sb;
- };
- static inline struct coda_sb_info *coda_sbp(struct super_block *sb)
- {
- return ((struct coda_sb_info *)((sb)->u.generic_sbp));
- }
- /* 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_store(struct super_block *sb, struct ViceFid *fid, int flags,
- struct coda_cred *);
- int venus_release(struct super_block *sb, struct ViceFid *fid, int flags);
- int venus_close(struct super_block *sb, struct ViceFid *fid, int flags,
- struct coda_cred *);
- int venus_open(struct super_block *sb, struct ViceFid *fid,
- int flags, struct file **f);
- 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
- #define REQ_ABORT 0x8
- /*
- * 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;
- extern struct venus_comm coda_comms[];
- 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 %dn", opcode);
- }
- static inline void badclstats(void)
- {
- coda_callstats.nbadcalls++;
- }
- #endif