diff options
Diffstat (limited to 'fs/coda/coda_psdev.h')
| -rw-r--r-- | fs/coda/coda_psdev.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/fs/coda/coda_psdev.h b/fs/coda/coda_psdev.h new file mode 100644 index 0000000000..52da08c770 --- /dev/null +++ b/fs/coda/coda_psdev.h @@ -0,0 +1,95 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __CODA_PSDEV_H +#define __CODA_PSDEV_H + +#include <linux/backing-dev.h> +#include <linux/magic.h> +#include <linux/mutex.h> + +#define CODA_PSDEV_MAJOR 67 +#define MAX_CODADEVS 5 /* how many do we allow */ + +struct kstatfs; + +/* messages between coda filesystem in kernel and Venus */ +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 */ +}; + +#define CODA_REQ_ASYNC 0x1 +#define CODA_REQ_READ 0x2 +#define CODA_REQ_WRITE 0x4 +#define CODA_REQ_ABORT 0x8 + +/* 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; + struct mutex vc_mutex; +}; + +static inline struct venus_comm *coda_vcp(struct super_block *sb) +{ + return (struct venus_comm *)((sb)->s_fs_info); +} + +/* upcalls */ +int venus_rootfid(struct super_block *sb, struct CodaFid *fidp); +int venus_getattr(struct super_block *sb, struct CodaFid *fid, + struct coda_vattr *attr); +int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *); +int venus_lookup(struct super_block *sb, struct CodaFid *fid, + const char *name, int length, int *type, + struct CodaFid *resfid); +int venus_close(struct super_block *sb, struct CodaFid *fid, int flags, + kuid_t uid); +int venus_open(struct super_block *sb, struct CodaFid *fid, int flags, + struct file **f); +int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid, + const char *name, int length, + struct CodaFid *newfid, struct coda_vattr *attrs); +int venus_create(struct super_block *sb, struct CodaFid *dirfid, + const char *name, int length, int excl, int mode, + struct CodaFid *newfid, struct coda_vattr *attrs); +int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid, + const char *name, int length); +int venus_remove(struct super_block *sb, struct CodaFid *dirfid, + const char *name, int length); +int venus_readlink(struct super_block *sb, struct CodaFid *fid, + char *buffer, int *length); +int venus_rename(struct super_block *sb, struct CodaFid *new_fid, + struct CodaFid *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 CodaFid *fid, + struct CodaFid *dirfid, const char *name, int len ); +int venus_symlink(struct super_block *sb, struct CodaFid *fid, + const char *name, int len, const char *symname, int symlen); +int venus_access(struct super_block *sb, struct CodaFid *fid, int mask); +int venus_pioctl(struct super_block *sb, struct CodaFid *fid, + unsigned int cmd, struct PioctlData *data); +int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out, + size_t nbytes); +int venus_fsync(struct super_block *sb, struct CodaFid *fid); +int venus_statfs(struct dentry *dentry, struct kstatfs *sfs); +int venus_access_intent(struct super_block *sb, struct CodaFid *fid, + bool *access_intent_supported, + size_t count, loff_t ppos, int type); + +/* + * Statistics + */ + +extern struct venus_comm coda_comms[]; +#endif |