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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/malloc.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 inode_operations coda_symlink_inode_operations;
-
- 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 *);
-
- /* 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 *);
- 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);
- int coda_mycred(struct coda_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);
-
- /* defined in file.c */
- void coda_prepare_openfile(struct inode *coda_inode, struct file *coda_file,
- struct inode *open_inode, struct file *open_file,
- struct dentry *open_dentry);
- void coda_restore_codafile(struct inode *coda_inode, struct file *coda_file,
- struct inode *open_inode, struct file *open_file);
- int coda_inode_grab(dev_t dev, ino_t ino, struct inode **ind);
-
- #define NB_SFS_SIZ 0x895440
-
- /* 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 CHECK_CNODE(c) do { } while (0);
-
- #define CODA_ALLOC(ptr, cast, size) \
- do { \
- if (size < 3000) { \
- ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
- CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n", (int) size, (int) ptr);\
- } else { \
- ptr = (cast)vmalloc((unsigned long) size); \
- CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n", (int) size, (int) ptr);}\
- if (ptr == 0) { \
- printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
- } \
- memset( ptr, 0, size ); \
- } while (0)
-
-
- #define CODA_FREE(ptr,size) do {if (size < 3000) { kfree_s((ptr), (size)); CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", (int) size, (int) ptr); } else { vfree((ptr)); CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", (int) size, (int) ptr);} } while (0)
-
- /* inode to cnode */
-
- static __inline__ struct ViceFid *coda_i2f(struct inode *inode)
- {
- return &(inode->u.coda_i.c_fid);
- }
-
- #define ITOC(inode) (&((inode)->u.coda_i))
-
-
-
-
-
-
- #endif
-