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/*
* 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/sched.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>
/* 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 struct address_space_operations coda_file_aops;
extern struct address_space_operations coda_symlink_aops;
extern struct file_operations coda_dir_operations;
extern struct file_operations coda_file_operations;
extern struct file_operations coda_ioctl_operations;
/* operations shared over more than one file */
int coda_open(struct inode *i, struct file *f);
int coda_release(struct inode *i, struct file *f);
int coda_permission(struct inode *inode, int mask);
int coda_revalidate_inode(struct dentry *);
int coda_notify_change(struct dentry *, struct iattr *);
/* global variables */
extern int coda_debug;
extern int coda_print_entry;
extern int coda_access_cache;
/* this file: heloers */
static __inline__ struct ViceFid *coda_i2f(struct inode *);
static __inline__ char *coda_i2s(struct inode *);
static __inline__ void coda_flag_inode(struct inode *, int flag);
char *coda_f2s(ViceFid *f);
char *coda_f2s2(ViceFid *f);
int coda_isroot(struct inode *i);
int coda_fid_is_volroot(struct ViceFid *);
int coda_fid_is_weird(struct ViceFid *fid);
int coda_iscontrol(const char *name, size_t length);
void coda_load_creds(struct coda_cred *cred);
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);
void print_vattr( struct coda_vattr *attr );
int coda_cred_ok(struct coda_cred *cred);
int coda_cred_eq(struct coda_cred *cred1, struct coda_cred *cred2);
/* cache.c */
void coda_purge_children(struct inode *, int);
void coda_purge_dentries(struct inode *);
/* sysctl.h */
void coda_sysctl_init(void);
void coda_sysctl_clean(void);
/* debugging masks */
#define D_SUPER 1 /* print results returned by Venus */
#define D_INODE 2 /* print entry and exit into procedure */
#define D_FILE 4
#define D_CACHE 8 /* cache debugging */
#define D_MALLOC 16 /* print malloc, de-alloc information */
#define D_CNODE 32
#define D_UPCALL 64 /* up and downcall debugging */
#define D_PSDEV 128
#define D_PIOCTL 256
#define D_SPECIAL 512
#define D_TIMING 1024
#define D_DOWNCALL 2048
#define CDEBUG(mask, format, a...) \
do { \
if (coda_debug & mask) { \
printk("(%s,l. %d): ", __FUNCTION__, __LINE__); \
printk(format, ## a); } \
} while (0)
#define ENTRY \
if(coda_print_entry) printk("Process %d entered %s\n",current->pid,__FUNCTION__)
#define EXIT \
if(coda_print_entry) printk("Process %d leaving %s\n",current->pid,__FUNCTION__)
#define CODA_ALLOC(ptr, cast, size) \
do { \
if (size < PAGE_SIZE) { \
ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
CDEBUG(D_MALLOC, "kmalloced: %lx at %p.\n", (long)size, ptr); \
} else { \
ptr = (cast)vmalloc((unsigned long) size); \
CDEBUG(D_MALLOC, "vmalloced: %lx at %p .\n", (long)size, ptr);} \
if (ptr == 0) { \
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)); CDEBUG(D_MALLOC, "kfreed: %lx at %p.\n", (long) size, ptr); } else { vfree((ptr)); CDEBUG(D_MALLOC, "vfreed: %lx at %p.\n", (long) size, ptr);} } while (0)
/* inode to cnode access functions */
static __inline__ struct ViceFid *coda_i2f(struct inode *inode)
{
return &(inode->u.coda_i.c_fid);
}
static __inline__ char *coda_i2s(struct inode *inode)
{
return coda_f2s(&(inode->u.coda_i.c_fid));
}
/* this will not zap the inode away */
static __inline__ void coda_flag_inode(struct inode *inode, int flag)
{
inode->u.coda_i.c_flags |= flag;
}
#define ITOC(inode) (&((inode)->u.coda_i))
#endif
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