2 * Coda File System, Linux Kernel module
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
8 * Carnegie Mellon University encourages users of this software to
9 * contribute improvements to the Coda project.
12 #ifndef _LINUX_CODA_FS
13 #define _LINUX_CODA_FS
15 #include <linux/kernel.h>
16 #include <linux/param.h>
17 #include <linux/sched.h>
19 #include <linux/vmalloc.h>
20 #include <linux/malloc.h>
21 #include <linux/wait.h>
22 #include <linux/types.h>
26 extern struct inode_operations coda_dir_inode_operations
;
27 extern struct inode_operations coda_file_inode_operations
;
28 extern struct inode_operations coda_ioctl_inode_operations
;
29 extern struct inode_operations coda_symlink_inode_operations
;
31 extern struct file_operations coda_dir_operations
;
32 extern struct file_operations coda_file_operations
;
33 extern struct file_operations coda_ioctl_operations
;
35 /* operations shared over more than one file */
36 int coda_open(struct inode
*i
, struct file
*f
);
37 int coda_release(struct inode
*i
, struct file
*f
);
38 int coda_permission(struct inode
*inode
, int mask
);
39 int coda_revalidate_inode(struct dentry
*);
41 /* global variables */
42 extern int coda_debug
;
43 extern int coda_print_entry
;
44 extern int coda_access_cache
;
46 /* this file: heloers */
47 static __inline__
struct ViceFid
*coda_i2f(struct inode
*);
48 char *coda_f2s(ViceFid
*f
);
49 char *coda_f2s2(ViceFid
*f
);
50 int coda_isroot(struct inode
*i
);
51 int coda_fid_is_volroot(struct ViceFid
*);
52 int coda_fid_is_weird(struct ViceFid
*fid
);
53 int coda_iscontrol(const char *name
, size_t length
);
55 void coda_load_creds(struct coda_cred
*cred
);
56 int coda_mycred(struct coda_cred
*);
57 void coda_vattr_to_iattr(struct inode
*, struct coda_vattr
*);
58 void coda_iattr_to_vattr(struct iattr
*, struct coda_vattr
*);
59 unsigned short coda_flags_to_cflags(unsigned short);
60 void print_vattr( struct coda_vattr
*attr
);
61 int coda_cred_ok(struct coda_cred
*cred
);
62 int coda_cred_eq(struct coda_cred
*cred1
, struct coda_cred
*cred2
);
64 /* defined in file.c */
65 void coda_prepare_openfile(struct inode
*coda_inode
, struct file
*coda_file
,
66 struct inode
*open_inode
, struct file
*open_file
,
67 struct dentry
*open_dentry
);
68 void coda_restore_codafile(struct inode
*coda_inode
, struct file
*coda_file
,
69 struct inode
*open_inode
, struct file
*open_file
);
70 int coda_inode_grab(dev_t dev
, ino_t ino
, struct inode
**ind
);
72 #define NB_SFS_SIZ 0x895440
75 void coda_purge_children(struct inode
*, int);
76 void coda_purge_dentries(struct inode
*);
79 void coda_sysctl_init(void);
80 void coda_sysctl_clean(void);
84 #define D_SUPER 1 /* print results returned by Venus */
85 #define D_INODE 2 /* print entry and exit into procedure */
87 #define D_CACHE 8 /* cache debugging */
88 #define D_MALLOC 16 /* print malloc, de-alloc information */
90 #define D_UPCALL 64 /* up and downcall debugging */
95 #define D_DOWNCALL 2048
97 #define CDEBUG(mask, format, a...) \
99 if (coda_debug & mask) { \
100 printk("(%s,l. %d): ", __FUNCTION__, __LINE__); \
101 printk(format, ## a); } \
105 if(coda_print_entry) printk("Process %d entered %s\n",current->pid,__FUNCTION__)
108 if(coda_print_entry) printk("Process %d leaving %s\n",current->pid,__FUNCTION__)
110 #define CHECK_CNODE(c) do { } while (0);
112 #define CODA_ALLOC(ptr, cast, size) \
115 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
116 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n", (int) size, (int) ptr);\
118 ptr = (cast)vmalloc((unsigned long) size); \
119 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n", (int) size, (int) ptr);}\
121 printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
123 memset( ptr, 0, size ); \
127 #define CODA_FREE(ptr,size) do {if (size < 3000) { kfree_s((ptr), (size)); CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", (int) size, (int) ptr); } else { vfree((ptr)); CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", (int) size, (int) ptr);} } while (0)
131 static __inline__
struct ViceFid
*coda_i2f(struct inode
*inode
)
133 return &(inode
->u
.coda_i
.c_fid
);
136 #define ITOC(inode) (&((inode)->u.coda_i))