xref: /openbmc/linux/fs/coda/coda_linux.h (revision f5c27da4)
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  
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  
72  static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
73  {
74  	return &(ITOC(inode)->c_fid);
75  }
76  
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 */
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