diff options
Diffstat (limited to 'pfinet/linux-src/include/linux/coda_psdev.h')
| -rw-r--r-- | pfinet/linux-src/include/linux/coda_psdev.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/pfinet/linux-src/include/linux/coda_psdev.h b/pfinet/linux-src/include/linux/coda_psdev.h new file mode 100644 index 00000000..8c564f9a --- /dev/null +++ b/pfinet/linux-src/include/linux/coda_psdev.h @@ -0,0 +1,131 @@ +#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; + struct wait_queue *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; + struct wait_queue *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 |