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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 "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 dentry_operations coda_dentry_operations;
31
32extern const struct address_space_operations coda_file_aops;
33extern const struct address_space_operations coda_symlink_aops;
34
35extern const struct file_operations coda_dir_operations;
36extern const struct file_operations coda_file_operations;
37extern const struct file_operations coda_ioctl_operations;
38
39/* operations shared over more than one file */
40int coda_open(struct inode *i, struct file *f);
41int coda_release(struct inode *i, struct file *f);
42int coda_permission(struct inode *inode, int mask);
43int coda_revalidate_inode(struct dentry *);
44int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);
45int coda_setattr(struct dentry *, struct iattr *);
46
47/* this file: heloers */
48char *coda_f2s(struct CodaFid *f);
49int coda_isroot(struct inode *i);
50int coda_iscontrol(const char *name, size_t length);
51
52void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
53void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
54unsigned short coda_flags_to_cflags(unsigned short);
55
56/* sysctl.h */
57void coda_sysctl_init(void);
58void coda_sysctl_clean(void);
59
60#define CODA_ALLOC(ptr, cast, size) do { \
61 if (size < PAGE_SIZE) \
62 ptr = kmalloc((unsigned long) size, GFP_KERNEL); \
63 else \
64 ptr = (cast)vmalloc((unsigned long) size); \
65 if (!ptr) \
66 printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
67 else memset( ptr, 0, size ); \
68} while (0)
69
70
71#define CODA_FREE(ptr,size) \
72 do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0)
73
74/* inode to cnode access functions */
75
76static inline struct coda_inode_info *ITOC(struct inode *inode)
77{
78 return list_entry(inode, struct coda_inode_info, vfs_inode);
79}
80
81static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
82{
83 return &(ITOC(inode)->c_fid);
84}
85
86static __inline__ char *coda_i2s(struct inode *inode)
87{
88 return coda_f2s(&(ITOC(inode)->c_fid));
89}
90
91/* this will not zap the inode away */
92static __inline__ void coda_flag_inode(struct inode *inode, int flag)
93{
94 struct coda_inode_info *cii = ITOC(inode);
95
96 spin_lock(&cii->c_lock);
97 cii->c_flags |= flag;
98 spin_unlock(&cii->c_lock);
99}
100
101#endif
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Coda File System, Linux Kernel module
4 *
5 * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
6 * Linux modifications (C) 1996, Peter J. Braam
7 * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
8 *
9 * Carnegie Mellon University encourages users of this software to
10 * contribute improvements to the Coda project.
11 */
12
13#ifndef _LINUX_CODA_FS
14#define _LINUX_CODA_FS
15
16#ifdef pr_fmt
17#undef pr_fmt
18#endif
19
20#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21
22#include <linux/kernel.h>
23#include <linux/param.h>
24#include <linux/mm.h>
25#include <linux/vmalloc.h>
26#include <linux/slab.h>
27#include <linux/wait.h>
28#include <linux/types.h>
29#include <linux/fs.h>
30#include "coda_fs_i.h"
31
32/* operations */
33extern const struct inode_operations coda_dir_inode_operations;
34extern const struct inode_operations coda_file_inode_operations;
35extern const struct inode_operations coda_ioctl_inode_operations;
36
37extern const struct dentry_operations coda_dentry_operations;
38
39extern const struct address_space_operations coda_file_aops;
40extern const struct address_space_operations coda_symlink_aops;
41
42extern const struct file_operations coda_dir_operations;
43extern const struct file_operations coda_file_operations;
44extern const struct file_operations coda_ioctl_operations;
45
46/* operations shared over more than one file */
47int coda_open(struct inode *i, struct file *f);
48int coda_release(struct inode *i, struct file *f);
49int coda_permission(struct mnt_idmap *idmap, struct inode *inode,
50 int mask);
51int coda_revalidate_inode(struct inode *);
52int coda_getattr(struct mnt_idmap *, const struct path *, struct kstat *,
53 u32, unsigned int);
54int coda_setattr(struct mnt_idmap *, struct dentry *, struct iattr *);
55
56/* this file: helpers */
57char *coda_f2s(struct CodaFid *f);
58int coda_iscontrol(const char *name, size_t length);
59
60umode_t coda_inode_type(struct coda_vattr *attr);
61void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
62void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
63unsigned short coda_flags_to_cflags(unsigned short);
64
65/* inode to cnode access functions */
66
67static inline struct coda_inode_info *ITOC(struct inode *inode)
68{
69 return container_of(inode, struct coda_inode_info, vfs_inode);
70}
71
72static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
73{
74 return &(ITOC(inode)->c_fid);
75}
76
77static __inline__ char *coda_i2s(struct inode *inode)
78{
79 return coda_f2s(&(ITOC(inode)->c_fid));
80}
81
82/* this will not zap the inode away */
83static __inline__ void coda_flag_inode(struct inode *inode, int flag)
84{
85 struct coda_inode_info *cii = ITOC(inode);
86
87 if (!inode)
88 return;
89
90 spin_lock(&cii->c_lock);
91 cii->c_flags |= flag;
92 spin_unlock(&cii->c_lock);
93}
94
95#endif