/*  * Coda File System, Linux Kernel module *  * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University * Linux modifications (C) 1996, Peter J. Braam * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University * * Carnegie Mellon University encourages users of this software to * contribute improvements to the Coda project. */ #ifndef _LINUX_CODA_FS#define _LINUX_CODA_FS #include <linux/kernel.h>#include <linux/param.h>#include <linux/mm.h>#include <linux/vmalloc.h>#include <linux/slab.h>#include <linux/wait.h>		#include <linux/types.h>#include <linux/fs.h>#include <linux/coda_fs_i.h> /* operations */extern struct inode_operations coda_dir_inode_operations;extern struct inode_operations coda_file_inode_operations;extern struct inode_operations coda_ioctl_inode_operations; extern const struct address_space_operations coda_file_aops;extern const struct address_space_operations coda_symlink_aops; extern const struct file_operations coda_dir_operations;extern const struct file_operations coda_file_operations;extern const struct file_operations coda_ioctl_operations; /* operations shared over more than one file */int coda_open(struct inode *i, struct file *f);int coda_flush(struct file *f, fl_owner_t id);int coda_release(struct inode *i, struct file *f);int coda_permission(struct inode *inode, int mask, struct nameidata *nd);int coda_revalidate_inode(struct dentry *);int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);int coda_setattr(struct dentry *, struct iattr *); /* global variables */extern int coda_fake_statfs; /* this file:  heloers */static __inline__ struct CodaFid *coda_i2f(struct inode *);static __inline__ char *coda_i2s(struct inode *);static __inline__ void coda_flag_inode(struct inode *, int flag);char *coda_f2s(struct CodaFid *f);int coda_isroot(struct inode *i);int coda_iscontrol(const char *name, size_t length); void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);unsigned short coda_flags_to_cflags(unsigned short); /* sysctl.h */void coda_sysctl_init(void);void coda_sysctl_clean(void); #define CODA_ALLOC(ptr, cast, size) do { \    if (size < PAGE_SIZE) \        ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \    else \        ptr = (cast)vmalloc((unsigned long) size); \    if (!ptr) \        printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \    else memset( ptr, 0, size ); \} while (0)  #define CODA_FREE(ptr,size) \    do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0) /* inode to cnode access functions */ static inline struct coda_inode_info *ITOC(struct inode *inode){	return list_entry(inode, struct coda_inode_info, vfs_inode);} static __inline__ struct CodaFid *coda_i2f(struct inode *inode){	return &(ITOC(inode)->c_fid);} static __inline__ char *coda_i2s(struct inode *inode){	return coda_f2s(&(ITOC(inode)->c_fid));} /* this will not zap the inode away */static __inline__ void coda_flag_inode(struct inode *inode, int flag){	ITOC(inode)->c_flags |= flag;}		 #endif