1/* 
  2 * Coda File System, Linux Kernel module
  3 * 
  4 * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
  5 * Linux modifications (C) 1996, Peter J. Braam
  6 * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
  7 *
  8 * Carnegie Mellon University encourages users of this software to
  9 * contribute improvements to the Coda project.
 10 */
 11
 12#ifndef _LINUX_CODA_FS
 13#define _LINUX_CODA_FS
 14
 15#include <linux/kernel.h>
 16#include <linux/param.h>
 17#include <linux/mm.h>
 18#include <linux/vmalloc.h>
 19#include <linux/slab.h>
 20#include <linux/wait.h>		
 21#include <linux/types.h>
 22#include <linux/fs.h>
 23#include "coda_fs_i.h"
 24
 25/* operations */
 26extern const struct inode_operations coda_dir_inode_operations;
 27extern const struct inode_operations coda_file_inode_operations;
 28extern const struct inode_operations coda_ioctl_inode_operations;
 29
 30extern const struct dentry_operations coda_dentry_operations;
 31
 32extern const struct address_space_operations coda_file_aops;
 33extern const struct address_space_operations coda_symlink_aops;
 34
 35extern const struct file_operations coda_dir_operations;
 36extern const struct file_operations coda_file_operations;
 37extern const struct file_operations coda_ioctl_operations;
 38
 39/* operations shared over more than one file */
 40int coda_open(struct inode *i, struct file *f);
 41int coda_release(struct inode *i, struct file *f);
 42int coda_permission(struct inode *inode, int mask);
 43int coda_revalidate_inode(struct dentry *);
 44int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 45int coda_setattr(struct dentry *, struct iattr *);
 46
 47/* this file:  heloers */
 48char *coda_f2s(struct CodaFid *f);
 49int coda_isroot(struct inode *i);
 50int coda_iscontrol(const char *name, size_t length);
 51
 52void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
 53void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
 54unsigned short coda_flags_to_cflags(unsigned short);
 55
 56/* sysctl.h */
 57void coda_sysctl_init(void);
 58void coda_sysctl_clean(void);
 59
 60#define CODA_ALLOC(ptr, cast, size) do { \
 61    if (size < PAGE_SIZE) \
 62        ptr = kmalloc((unsigned long) size, GFP_KERNEL); \
 63    else \
 64        ptr = (cast)vmalloc((unsigned long) size); \
 65    if (!ptr) \
 66        printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
 67    else memset( ptr, 0, size ); \
 68} while (0)
 69
 70
 71#define CODA_FREE(ptr,size) \
 72    do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0)
 73
 74/* inode to cnode access functions */
 75
 76static inline struct coda_inode_info *ITOC(struct inode *inode)
 77{
 78	return list_entry(inode, struct coda_inode_info, vfs_inode);
 79}
 80
 81static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
 82{
 83	return &(ITOC(inode)->c_fid);
 84}
 85
 86static __inline__ char *coda_i2s(struct inode *inode)
 87{
 88	return coda_f2s(&(ITOC(inode)->c_fid));
 89}
 90
 91/* this will not zap the inode away */
 92static __inline__ void coda_flag_inode(struct inode *inode, int flag)
 93{
 94	struct coda_inode_info *cii = ITOC(inode);
 95
 96	spin_lock(&cii->c_lock);
 97	cii->c_flags |= flag;
 98	spin_unlock(&cii->c_lock);
 99}		
100
101#endif

  1/* 
  2 * Coda File System, Linux Kernel module
  3 * 
  4 * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
  5 * Linux modifications (C) 1996, Peter J. Braam
  6 * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
  7 *
  8 * Carnegie Mellon University encourages users of this software to
  9 * contribute improvements to the Coda project.
 10 */
 11
 12#ifndef _LINUX_CODA_FS
 13#define _LINUX_CODA_FS
 14
 15#include <linux/kernel.h>
 16#include <linux/param.h>
 17#include <linux/mm.h>
 18#include <linux/vmalloc.h>
 19#include <linux/slab.h>
 20#include <linux/wait.h>		
 21#include <linux/types.h>
 22#include <linux/fs.h>
 23#include "coda_fs_i.h"
 24
 25/* operations */
 26extern const struct inode_operations coda_dir_inode_operations;
 27extern const struct inode_operations coda_file_inode_operations;
 28extern const struct inode_operations coda_ioctl_inode_operations;
 29
 30extern const struct dentry_operations coda_dentry_operations;
 31
 32extern const struct address_space_operations coda_file_aops;
 33extern const struct address_space_operations coda_symlink_aops;
 34
 35extern const struct file_operations coda_dir_operations;
 36extern const struct file_operations coda_file_operations;
 37extern const struct file_operations coda_ioctl_operations;
 38
 39/* operations shared over more than one file */
 40int coda_open(struct inode *i, struct file *f);
 41int coda_release(struct inode *i, struct file *f);
 42int coda_permission(struct inode *inode, int mask);
 43int coda_revalidate_inode(struct inode *);
 44int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 45int coda_setattr(struct dentry *, struct iattr *);
 46
 47/* this file:  heloers */
 48char *coda_f2s(struct CodaFid *f);
 49int coda_isroot(struct inode *i);
 50int coda_iscontrol(const char *name, size_t length);
 51
 52void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
 53void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
 54unsigned short coda_flags_to_cflags(unsigned short);
 55
 56/* sysctl.h */
 57void coda_sysctl_init(void);
 58void coda_sysctl_clean(void);
 59
 60#define CODA_ALLOC(ptr, cast, size) do { \
 61    if (size < PAGE_SIZE) \
 62        ptr = kzalloc((unsigned long) size, GFP_KERNEL); \
 63    else \
 64        ptr = (cast)vzalloc((unsigned long) size); \
 65    if (!ptr) \
 66        printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
 
 67} while (0)
 68
 69
 70#define CODA_FREE(ptr,size) \
 71    do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0)
 72
 73/* inode to cnode access functions */
 74
 75static inline struct coda_inode_info *ITOC(struct inode *inode)
 76{
 77	return list_entry(inode, struct coda_inode_info, vfs_inode);
 78}
 79
 80static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
 81{
 82	return &(ITOC(inode)->c_fid);
 83}
 84
 85static __inline__ char *coda_i2s(struct inode *inode)
 86{
 87	return coda_f2s(&(ITOC(inode)->c_fid));
 88}
 89
 90/* this will not zap the inode away */
 91static __inline__ void coda_flag_inode(struct inode *inode, int flag)
 92{
 93	struct coda_inode_info *cii = ITOC(inode);
 94
 95	spin_lock(&cii->c_lock);
 96	cii->c_flags |= flag;
 97	spin_unlock(&cii->c_lock);
 98}		
 99
100#endif