| 1 | /** @file
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| 2 | *
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| 3 | * vboxvfs -- VirtualBox Guest Additions for Linux
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 innotek GmbH
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License as published by the Free Software Foundation,
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| 13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 14 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #ifndef VFSMOD_H
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| 19 | #define VFSMOD_H
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| 20 |
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| 21 | #include "the-linux-kernel.h"
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| 22 | #include "version-generated.h"
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| 23 |
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| 24 | #include "VBoxCalls.h"
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| 25 | #include "vbsfmount.h"
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| 26 |
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| 27 | /* structs */
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| 28 | struct sf_glob_info {
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| 29 | VBSFMAP map;
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| 30 | struct nls_table *nls;
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| 31 | int ttl;
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| 32 | int uid;
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| 33 | int gid;
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| 34 | };
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| 35 |
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| 36 | struct sf_inode_info {
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| 37 | SHFLSTRING *path;
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| 38 | int force_restat;
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| 39 | };
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| 40 |
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| 41 | struct sf_dir_info {
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| 42 | struct list_head info_list;
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| 43 | };
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| 44 |
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| 45 | struct sf_dir_buf {
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| 46 | size_t nb_entries;
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| 47 | size_t free_bytes;
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| 48 | size_t used_bytes;
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| 49 | void *buf;
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| 50 | struct list_head head;
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| 51 | };
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| 52 |
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| 53 | struct sf_reg_info {
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| 54 | SHFLHANDLE handle;
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| 55 | };
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| 56 |
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| 57 | /* globals */
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| 58 | extern VBSFCLIENT client_handle;
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| 59 |
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| 60 | /* forward declarations */
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| 61 | extern struct inode_operations sf_dir_iops;
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| 62 | extern struct inode_operations sf_reg_iops;
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| 63 | extern struct file_operations sf_dir_fops;
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| 64 | extern struct file_operations sf_reg_fops;
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| 65 | extern struct dentry_operations sf_dentry_ops;
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| 66 |
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| 67 | extern void
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| 68 | sf_init_inode (struct sf_glob_info *sf_g, struct inode *inode,
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| 69 | RTFSOBJINFO *info);
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| 70 | extern int
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| 71 | sf_stat (const char *caller, struct sf_glob_info *sf_g,
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| 72 | SHFLSTRING *path, RTFSOBJINFO *result, int ok_to_fail);
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| 73 | extern int
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| 74 | sf_inode_revalidate (struct dentry *dentry);
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| 75 | #if LINUX_VERSION_CODE >= KERNEL_VERSION (2, 6, 0)
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| 76 | extern int
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| 77 | sf_getattr (struct vfsmount *mnt, struct dentry *dentry, struct kstat *kstat);
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| 78 | #endif
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| 79 | extern int
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| 80 | sf_path_from_dentry (const char *caller, struct sf_glob_info *sf_g,
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| 81 | struct sf_inode_info *sf_i, struct dentry *dentry,
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| 82 | SHFLSTRING **result);
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| 83 | extern int
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| 84 | sf_nlscpy (struct sf_glob_info *sf_g,
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| 85 | char *name, size_t name_bound_len,
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| 86 | const unsigned char *utf8_name, size_t utf8_len);
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| 87 | extern void
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| 88 | sf_dir_info_free (struct sf_dir_info *p);
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| 89 | extern struct sf_dir_info *
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| 90 | sf_dir_info_alloc (void);
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| 91 | extern int
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| 92 | sf_dir_read_all (struct sf_glob_info *sf_g, struct sf_inode_info *sf_i,
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| 93 | struct sf_dir_info *sf_d, SHFLHANDLE handle);
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| 94 |
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| 95 | #if LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 0)
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| 96 | #define STRUCT_STATFS struct statfs
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| 97 | #else
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| 98 | #define STRUCT_STATFS struct kstatfs
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| 99 | #endif
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| 100 | int sf_get_volume_info(struct super_block *sb,STRUCT_STATFS *stat);
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| 101 |
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| 102 | #ifdef ALIGN
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| 103 | #undef ALIGN
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| 104 | #endif
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| 105 |
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| 106 | #define CMC_API __attribute__ ((cdecl, regparm (0)))
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| 107 |
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| 108 | #define TRACE() LogFunc (("tracepoint\n"))
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| 109 |
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| 110 | /* Following casts are here to prevent assignment of void * to
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| 111 | pointers of arbitrary type */
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| 112 | #if LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 0)
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| 113 | #define GET_GLOB_INFO(sb) ((struct sf_glob_info *) (sb)->u.generic_sbp)
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| 114 | #define SET_GLOB_INFO(sb, sf_g) (sb)->u.generic_sbp = sf_g
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| 115 | #else
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| 116 | #define GET_GLOB_INFO(sb) ((struct sf_glob_info *) (sb)->s_fs_info)
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| 117 | #define SET_GLOB_INFO(sb, sf_g) (sb)->s_fs_info = sf_g
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| 118 | #endif
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| 119 |
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| 120 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19) || defined(KERNEL_FC6)
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| 121 | /* FC6 kernel 2.6.18, vanilla kernel 2.6.19+ */
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| 122 | #define GET_INODE_INFO(i) ((struct sf_inode_info *) (i)->i_private)
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| 123 | #define SET_INODE_INFO(i, sf_i) (i)->i_private = sf_i
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| 124 | #else
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| 125 | /* vanilla kernel up to 2.6.18 */
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| 126 | #define GET_INODE_INFO(i) ((struct sf_inode_info *) (i)->u.generic_ip)
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| 127 | #define SET_INODE_INFO(i, sf_i) (i)->u.generic_ip = sf_i
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| 128 | #endif
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| 129 |
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| 130 | #endif /* vfsmod.h */
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