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 <linux/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 address_space_operations coda_file_aops; 31extern const struct address_space_operations coda_symlink_aops; 32 33extern const struct file_operations coda_dir_operations; 34extern const struct file_operations coda_file_operations; 35extern const struct file_operations coda_ioctl_operations; 36 37/* operations shared over more than one file */ 38int coda_open(struct inode *i, struct file *f); 39int coda_release(struct inode *i, struct file *f); 40int coda_permission(struct inode *inode, int mask); 41int coda_revalidate_inode(struct dentry *); 42int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *); 43int coda_setattr(struct dentry *, struct iattr *); 44 45/* this file: heloers */ 46char *coda_f2s(struct CodaFid *f); 47int coda_isroot(struct inode *i); 48int coda_iscontrol(const char *name, size_t length); 49 50void coda_vattr_to_iattr(struct inode *, struct coda_vattr *); 51void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *); 52unsigned short coda_flags_to_cflags(unsigned short); 53 54/* sysctl.h */ 55void coda_sysctl_init(void); 56void coda_sysctl_clean(void); 57 58#define CODA_ALLOC(ptr, cast, size) do { \ 59 if (size < PAGE_SIZE) \ 60 ptr = kmalloc((unsigned long) size, GFP_KERNEL); \ 61 else \ 62 ptr = (cast)vmalloc((unsigned long) size); \ 63 if (!ptr) \ 64 printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ 65 else memset( ptr, 0, size ); \ 66} while (0) 67 68 69#define CODA_FREE(ptr,size) \ 70 do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0) 71 72/* inode to cnode access functions */ 73 74static inline struct coda_inode_info *ITOC(struct inode *inode) 75{ 76 return list_entry(inode, struct coda_inode_info, vfs_inode); 77} 78 79static __inline__ struct CodaFid *coda_i2f(struct inode *inode) 80{ 81 return &(ITOC(inode)->c_fid); 82} 83 84static __inline__ char *coda_i2s(struct inode *inode) 85{ 86 return coda_f2s(&(ITOC(inode)->c_fid)); 87} 88 89/* this will not zap the inode away */ 90static __inline__ void coda_flag_inode(struct inode *inode, int flag) 91{ 92 ITOC(inode)->c_flags |= flag; 93} 94 95#endif 96