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TOMOYO Linux Cross Reference
Linux/fs/coda/coda_linux.h

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  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 inode *inode, int mask);
 50 int coda_revalidate_inode(struct inode *);
 51 int coda_getattr(const struct path *, struct kstat *, u32, unsigned int);
 52 int coda_setattr(struct dentry *, struct iattr *);
 53 
 54 /* this file:  heloers */
 55 char *coda_f2s(struct CodaFid *f);
 56 int coda_iscontrol(const char *name, size_t length);
 57 
 58 void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
 59 void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
 60 unsigned short coda_flags_to_cflags(unsigned short);
 61 
 62 /* sysctl.h */
 63 void coda_sysctl_init(void);
 64 void coda_sysctl_clean(void);
 65 
 66 #define CODA_ALLOC(ptr, cast, size) do { \
 67     if (size < PAGE_SIZE) \
 68         ptr = kzalloc((unsigned long) size, GFP_KERNEL); \
 69     else \
 70         ptr = (cast)vzalloc((unsigned long) size); \
 71     if (!ptr) \
 72         pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
 73 } while (0)
 74 
 75 
 76 #define CODA_FREE(ptr, size) kvfree((ptr))
 77 
 78 /* inode to cnode access functions */
 79 
 80 static inline struct coda_inode_info *ITOC(struct inode *inode)
 81 {
 82         return container_of(inode, struct coda_inode_info, vfs_inode);
 83 }
 84 
 85 static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
 86 {
 87         return &(ITOC(inode)->c_fid);
 88 }
 89 
 90 static __inline__ char *coda_i2s(struct inode *inode)
 91 {
 92         return coda_f2s(&(ITOC(inode)->c_fid));
 93 }
 94 
 95 /* this will not zap the inode away */
 96 static __inline__ void coda_flag_inode(struct inode *inode, int flag)
 97 {
 98         struct coda_inode_info *cii = ITOC(inode);
 99 
100         spin_lock(&cii->c_lock);
101         cii->c_flags |= flag;
102         spin_unlock(&cii->c_lock);
103 }               
104 
105 #endif
106 

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