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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * Coda File System, Linux Kernel module |
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| 3 | * |
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| 4 | * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University |
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| 5 | * Linux modifications (C) 1996, Peter J. Braam |
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| 6 | * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University |
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| 7 | * |
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| 8 | * Carnegie Mellon University encourages users of this software to |
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| 9 | * contribute improvements to the Coda project. |
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| 10 | */ |
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| 11 | |||
| 12 | #ifndef _LINUX_CODA_FS |
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| 13 | #define _LINUX_CODA_FS |
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| 14 | |||
| 15 | #include <linux/kernel.h> |
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| 16 | #include <linux/param.h> |
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| 17 | #include <linux/mm.h> |
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| 18 | #include <linux/vmalloc.h> |
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| 19 | #include <linux/slab.h> |
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| 20 | #include <linux/wait.h> |
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| 21 | #include <linux/types.h> |
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| 22 | #include <linux/fs.h> |
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| 23 | #include <linux/coda_fs_i.h> |
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| 24 | |||
| 25 | /* operations */ |
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| 26 | extern struct inode_operations coda_dir_inode_operations; |
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| 27 | extern struct inode_operations coda_file_inode_operations; |
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| 28 | extern struct inode_operations coda_ioctl_inode_operations; |
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| 29 | |||
| 30 | extern struct address_space_operations coda_file_aops; |
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| 31 | extern struct address_space_operations coda_symlink_aops; |
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| 32 | |||
| 33 | extern struct file_operations coda_dir_operations; |
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| 34 | extern struct file_operations coda_file_operations; |
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| 35 | extern struct file_operations coda_ioctl_operations; |
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| 36 | |||
| 37 | /* operations shared over more than one file */ |
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| 38 | int coda_open(struct inode *i, struct file *f); |
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| 39 | int coda_flush(struct file *f); |
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| 40 | int coda_release(struct inode *i, struct file *f); |
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| 41 | int coda_permission(struct inode *inode, int mask, struct nameidata *nd); |
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| 42 | int coda_revalidate_inode(struct dentry *); |
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| 43 | int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
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| 44 | int coda_setattr(struct dentry *, struct iattr *); |
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| 45 | |||
| 46 | /* global variables */ |
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| 47 | extern int coda_fake_statfs; |
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| 48 | |||
| 49 | /* this file: heloers */ |
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| 50 | static __inline__ struct CodaFid *coda_i2f(struct inode *); |
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| 51 | static __inline__ char *coda_i2s(struct inode *); |
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| 52 | static __inline__ void coda_flag_inode(struct inode *, int flag); |
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| 53 | char *coda_f2s(struct CodaFid *f); |
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| 54 | int coda_isroot(struct inode *i); |
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| 55 | int coda_iscontrol(const char *name, size_t length); |
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| 56 | |||
| 57 | void coda_vattr_to_iattr(struct inode *, struct coda_vattr *); |
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| 58 | void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *); |
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| 59 | unsigned short coda_flags_to_cflags(unsigned short); |
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| 60 | |||
| 61 | /* sysctl.h */ |
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| 62 | void coda_sysctl_init(void); |
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| 63 | void coda_sysctl_clean(void); |
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| 64 | |||
| 65 | #define CODA_ALLOC(ptr, cast, size) do { \ |
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| 66 | if (size < PAGE_SIZE) \ |
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| 67 | ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \ |
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| 68 | else \ |
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| 69 | ptr = (cast)vmalloc((unsigned long) size); \ |
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| 70 | if (!ptr) \ |
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| 71 | printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ |
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| 72 | else memset( ptr, 0, size ); \ |
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| 73 | } while (0) |
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| 74 | |||
| 75 | |||
| 76 | #define CODA_FREE(ptr,size) \ |
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| 77 | do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0) |
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| 78 | |||
| 79 | /* inode to cnode access functions */ |
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| 80 | |||
| 81 | static inline struct coda_inode_info *ITOC(struct inode *inode) |
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| 82 | { |
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| 83 | return list_entry(inode, struct coda_inode_info, vfs_inode); |
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| 84 | } |
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| 85 | |||
| 86 | static __inline__ struct CodaFid *coda_i2f(struct inode *inode) |
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| 87 | { |
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| 88 | return &(ITOC(inode)->c_fid); |
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| 89 | } |
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| 90 | |||
| 91 | static __inline__ char *coda_i2s(struct inode *inode) |
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| 92 | { |
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| 93 | return coda_f2s(&(ITOC(inode)->c_fid)); |
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| 94 | } |
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| 95 | |||
| 96 | /* this will not zap the inode away */ |
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| 97 | static __inline__ void coda_flag_inode(struct inode *inode, int flag) |
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| 98 | { |
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| 99 | ITOC(inode)->c_flags |= flag; |
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| 100 | } |
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| 101 | |||
| 102 | #endif |