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 */
33 extern const struct inode_operations coda_dir_inode_operations;
34 extern const struct inode_operations coda_file_inode_operations;
35 extern const struct inode_operations coda_ioctl_inode_operations;
36
37 extern const struct dentry_operations coda_dentry_operations;
38
39 extern const struct address_space_operations coda_file_aops;
40 extern const struct address_space_operations coda_symlink_aops;
41
42 extern const struct file_operations coda_dir_operations;
43 extern const struct file_operations coda_file_operations;
44 extern const struct file_operations coda_ioctl_operations;
45
46 /* operations shared over more than one file */
47 int coda_open(struct inode *i, struct file *f);
48 int coda_release(struct inode *i, struct file *f);
49 int coda_permission(struct user_namespace *mnt_userns, struct inode *inode,
50 int mask);
51 int coda_revalidate_inode(struct inode *);
52 int coda_getattr(struct user_namespace *, const struct path *, struct kstat *,
53 u32, unsigned int);
54 int coda_setattr(struct user_namespace *, struct dentry *, struct iattr *);
55
56 /* this file: helpers */
57 char *coda_f2s(struct CodaFid *f);
58 int coda_iscontrol(const char *name, size_t length);
59
60 umode_t coda_inode_type(struct coda_vattr *attr);
61 void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
62 void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
63 unsigned short coda_flags_to_cflags(unsigned short);
64
65 /* inode to cnode access functions */
66
ITOC(struct inode * inode)67 static inline struct coda_inode_info *ITOC(struct inode *inode)
68 {
69 return container_of(inode, struct coda_inode_info, vfs_inode);
70 }
71
coda_i2f(struct inode * inode)72 static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
73 {
74 return &(ITOC(inode)->c_fid);
75 }
76
coda_i2s(struct inode * inode)77 static __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 */
coda_flag_inode(struct inode * inode,int flag)83 static __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
96