Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
| 26 | extern struct inode_operations coda_dir_inode_operations; |
| 27 | extern struct inode_operations coda_file_inode_operations; |
| 28 | extern struct inode_operations coda_ioctl_inode_operations; |
| 29 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 30 | extern const struct address_space_operations coda_file_aops; |
| 31 | extern const struct address_space_operations coda_symlink_aops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 33 | extern const struct file_operations coda_dir_operations; |
| 34 | extern const struct file_operations coda_file_operations; |
| 35 | extern const struct file_operations coda_ioctl_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| 37 | /* operations shared over more than one file */ |
| 38 | int coda_open(struct inode *i, struct file *f); |
Miklos Szeredi | 75e1fcc | 2006-06-23 02:05:12 -0700 | [diff] [blame] | 39 | int coda_flush(struct file *f, fl_owner_t id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | int coda_release(struct inode *i, struct file *f); |
| 41 | int coda_permission(struct inode *inode, int mask, struct nameidata *nd); |
| 42 | int coda_revalidate_inode(struct dentry *); |
| 43 | int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
| 44 | int coda_setattr(struct dentry *, struct iattr *); |
| 45 | |
| 46 | /* global variables */ |
| 47 | extern int coda_fake_statfs; |
| 48 | |
| 49 | /* this file: heloers */ |
| 50 | static __inline__ struct CodaFid *coda_i2f(struct inode *); |
| 51 | static __inline__ char *coda_i2s(struct inode *); |
| 52 | static __inline__ void coda_flag_inode(struct inode *, int flag); |
| 53 | char *coda_f2s(struct CodaFid *f); |
| 54 | int coda_isroot(struct inode *i); |
| 55 | int coda_iscontrol(const char *name, size_t length); |
| 56 | |
| 57 | void coda_vattr_to_iattr(struct inode *, struct coda_vattr *); |
| 58 | void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *); |
| 59 | unsigned short coda_flags_to_cflags(unsigned short); |
| 60 | |
| 61 | /* sysctl.h */ |
| 62 | void coda_sysctl_init(void); |
| 63 | void coda_sysctl_clean(void); |
| 64 | |
| 65 | #define CODA_ALLOC(ptr, cast, size) do { \ |
| 66 | if (size < PAGE_SIZE) \ |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame^] | 67 | ptr = kmalloc((unsigned long) size, GFP_KERNEL); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | else \ |
| 69 | ptr = (cast)vmalloc((unsigned long) size); \ |
| 70 | if (!ptr) \ |
| 71 | printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ |
| 72 | else memset( ptr, 0, size ); \ |
| 73 | } while (0) |
| 74 | |
| 75 | |
| 76 | #define CODA_FREE(ptr,size) \ |
| 77 | do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0) |
| 78 | |
| 79 | /* inode to cnode access functions */ |
| 80 | |
| 81 | static inline struct coda_inode_info *ITOC(struct inode *inode) |
| 82 | { |
| 83 | return list_entry(inode, struct coda_inode_info, vfs_inode); |
| 84 | } |
| 85 | |
| 86 | static __inline__ struct CodaFid *coda_i2f(struct inode *inode) |
| 87 | { |
| 88 | return &(ITOC(inode)->c_fid); |
| 89 | } |
| 90 | |
| 91 | static __inline__ char *coda_i2s(struct inode *inode) |
| 92 | { |
| 93 | return coda_f2s(&(ITOC(inode)->c_fid)); |
| 94 | } |
| 95 | |
| 96 | /* this will not zap the inode away */ |
| 97 | static __inline__ void coda_flag_inode(struct inode *inode, int flag) |
| 98 | { |
| 99 | ITOC(inode)->c_flags |= flag; |
| 100 | } |
| 101 | |
| 102 | #endif |