forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 17
/
coda_linux.h
104 lines (82 loc) · 2.91 KB
/
coda_linux.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
/*
* 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
#ifdef pr_fmt
#undef pr_fmt
#endif
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/param.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>
#include "coda_fs_i.h"
/* operations */
extern const struct inode_operations coda_dir_inode_operations;
extern const struct inode_operations coda_file_inode_operations;
extern const struct inode_operations coda_ioctl_inode_operations;
extern const struct dentry_operations coda_dentry_operations;
extern const struct address_space_operations coda_file_aops;
extern const struct address_space_operations coda_symlink_aops;
extern const struct file_operations coda_dir_operations;
extern const struct file_operations coda_file_operations;
extern const struct file_operations coda_ioctl_operations;
/* operations shared over more than one file */
int coda_open(struct inode *i, 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 inode *);
int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);
int coda_setattr(struct dentry *, struct iattr *);
/* this file: heloers */
char *coda_f2s(struct CodaFid *f);
int coda_iscontrol(const char *name, size_t length);
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);
/* sysctl.h */
void coda_sysctl_init(void);
void coda_sysctl_clean(void);
#define CODA_ALLOC(ptr, cast, size) do { \
if (size < PAGE_SIZE) \
ptr = kzalloc((unsigned long) size, GFP_KERNEL); \
else \
ptr = (cast)vzalloc((unsigned long) size); \
if (!ptr) \
pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
} while (0)
#define CODA_FREE(ptr, size) kvfree((ptr))
/* inode to cnode access functions */
static inline struct coda_inode_info *ITOC(struct inode *inode)
{
return container_of(inode, struct coda_inode_info, vfs_inode);
}
static __inline__ struct CodaFid *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)
{
struct coda_inode_info *cii = ITOC(inode);
spin_lock(&cii->c_lock);
cii->c_flags |= flag;
spin_unlock(&cii->c_lock);
}
#endif