coda_linux.h
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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_flush(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 *);
- int coda_isnullfid(ViceFid *fid);
- /* global variables */
- extern int coda_debug;
- extern int coda_print_entry;
- extern int coda_access_cache;
- extern int coda_fake_statfs;
- /* 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_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);
- /* 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 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:%dn", __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 */
- #define ITOC(inode) (&((inode)->u.coda_i))
- static __inline__ struct ViceFid *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