Commit | Line | Data |
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1da177e4 LT |
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> | |
31a203df | 23 | #include "coda_fs_i.h" |
1da177e4 LT |
24 | |
25 | /* operations */ | |
c5ef1c42 AV |
26 | extern const struct inode_operations coda_dir_inode_operations; |
27 | extern const struct inode_operations coda_file_inode_operations; | |
28 | extern const struct inode_operations coda_ioctl_inode_operations; | |
1da177e4 | 29 | |
9501e4c4 AV |
30 | extern const struct dentry_operations coda_dentry_operations; |
31 | ||
f5e54d6e CH |
32 | extern const struct address_space_operations coda_file_aops; |
33 | extern const struct address_space_operations coda_symlink_aops; | |
1da177e4 | 34 | |
4b6f5d20 AV |
35 | extern const struct file_operations coda_dir_operations; |
36 | extern const struct file_operations coda_file_operations; | |
37 | extern const struct file_operations coda_ioctl_operations; | |
1da177e4 LT |
38 | |
39 | /* operations shared over more than one file */ | |
40 | int coda_open(struct inode *i, struct file *f); | |
1da177e4 | 41 | int coda_release(struct inode *i, struct file *f); |
10556cb2 | 42 | int coda_permission(struct inode *inode, int mask); |
11d100d9 | 43 | int coda_revalidate_inode(struct inode *); |
1da177e4 LT |
44 | int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
45 | int coda_setattr(struct dentry *, struct iattr *); | |
46 | ||
1da177e4 | 47 | /* this file: heloers */ |
1da177e4 LT |
48 | char *coda_f2s(struct CodaFid *f); |
49 | int coda_isroot(struct inode *i); | |
50 | int coda_iscontrol(const char *name, size_t length); | |
51 | ||
52 | void coda_vattr_to_iattr(struct inode *, struct coda_vattr *); | |
53 | void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *); | |
54 | unsigned short coda_flags_to_cflags(unsigned short); | |
55 | ||
56 | /* sysctl.h */ | |
57 | void coda_sysctl_init(void); | |
58 | void coda_sysctl_clean(void); | |
59 | ||
60 | #define CODA_ALLOC(ptr, cast, size) do { \ | |
61 | if (size < PAGE_SIZE) \ | |
558feb08 | 62 | ptr = kzalloc((unsigned long) size, GFP_KERNEL); \ |
1da177e4 | 63 | else \ |
558feb08 | 64 | ptr = (cast)vzalloc((unsigned long) size); \ |
1da177e4 | 65 | if (!ptr) \ |
d9b4b319 | 66 | pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ |
1da177e4 LT |
67 | } while (0) |
68 | ||
69 | ||
70 | #define CODA_FREE(ptr,size) \ | |
71 | do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0) | |
72 | ||
73 | /* inode to cnode access functions */ | |
74 | ||
75 | static inline struct coda_inode_info *ITOC(struct inode *inode) | |
76 | { | |
77 | return list_entry(inode, struct coda_inode_info, vfs_inode); | |
78 | } | |
79 | ||
80 | static __inline__ struct CodaFid *coda_i2f(struct inode *inode) | |
81 | { | |
82 | return &(ITOC(inode)->c_fid); | |
83 | } | |
84 | ||
85 | static __inline__ char *coda_i2s(struct inode *inode) | |
86 | { | |
87 | return coda_f2s(&(ITOC(inode)->c_fid)); | |
88 | } | |
89 | ||
90 | /* this will not zap the inode away */ | |
91 | static __inline__ void coda_flag_inode(struct inode *inode, int flag) | |
92 | { | |
b5ce1d83 YA |
93 | struct coda_inode_info *cii = ITOC(inode); |
94 | ||
95 | spin_lock(&cii->c_lock); | |
96 | cii->c_flags |= flag; | |
97 | spin_unlock(&cii->c_lock); | |
1da177e4 LT |
98 | } |
99 | ||
100 | #endif |