1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * (C) 2001 Clemson University and The University of Chicago
4 *
5 * See COPYING in top-level directory.
6 */
7
8 /*
9 * Definitions of downcalls used in Linux kernel module.
10 */
11
12 #ifndef __DOWNCALL_H
13 #define __DOWNCALL_H
14
15 /*
16 * Sanitized the device-client core interaction
17 * for clean 32-64 bit usage
18 */
19 struct orangefs_io_response {
20 __s64 amt_complete;
21 };
22
23 struct orangefs_lookup_response {
24 struct orangefs_object_kref refn;
25 };
26
27 struct orangefs_create_response {
28 struct orangefs_object_kref refn;
29 };
30
31 struct orangefs_symlink_response {
32 struct orangefs_object_kref refn;
33 };
34
35 struct orangefs_getattr_response {
36 struct ORANGEFS_sys_attr_s attributes;
37 char link_target[ORANGEFS_NAME_MAX];
38 };
39
40 struct orangefs_mkdir_response {
41 struct orangefs_object_kref refn;
42 };
43
44 struct orangefs_statfs_response {
45 __s64 block_size;
46 __s64 blocks_total;
47 __s64 blocks_avail;
48 __s64 files_total;
49 __s64 files_avail;
50 };
51
52 struct orangefs_fs_mount_response {
53 __s32 fs_id;
54 __s32 id;
55 struct orangefs_khandle root_khandle;
56 };
57
58 /* the getxattr response is the attribute value */
59 struct orangefs_getxattr_response {
60 __s32 val_sz;
61 __s32 __pad1;
62 char val[ORANGEFS_MAX_XATTR_VALUELEN];
63 };
64
65 /* the listxattr response is an array of attribute names */
66 struct orangefs_listxattr_response {
67 __s32 returned_count;
68 __s32 __pad1;
69 __u64 token;
70 char key[ORANGEFS_MAX_XATTR_LISTLEN * ORANGEFS_MAX_XATTR_NAMELEN];
71 __s32 keylen;
72 __s32 __pad2;
73 __s32 lengths[ORANGEFS_MAX_XATTR_LISTLEN];
74 };
75
76 struct orangefs_param_response {
77 union {
78 __s64 value64;
79 __s32 value32[2];
80 } u;
81 };
82
83 #define PERF_COUNT_BUF_SIZE 4096
84 struct orangefs_perf_count_response {
85 char buffer[PERF_COUNT_BUF_SIZE];
86 };
87
88 #define FS_KEY_BUF_SIZE 4096
89 struct orangefs_fs_key_response {
90 __s32 fs_keylen;
91 __s32 __pad1;
92 char fs_key[FS_KEY_BUF_SIZE];
93 };
94
95 /* 2.9.6 */
96 struct orangefs_features_response {
97 __u64 features;
98 };
99
100 struct orangefs_downcall_s {
101 __s32 type;
102 __s32 status;
103 /* currently trailer is used only by readdir */
104 __s64 trailer_size;
105 char *trailer_buf;
106
107 union {
108 struct orangefs_io_response io;
109 struct orangefs_lookup_response lookup;
110 struct orangefs_create_response create;
111 struct orangefs_symlink_response sym;
112 struct orangefs_getattr_response getattr;
113 struct orangefs_mkdir_response mkdir;
114 struct orangefs_statfs_response statfs;
115 struct orangefs_fs_mount_response fs_mount;
116 struct orangefs_getxattr_response getxattr;
117 struct orangefs_listxattr_response listxattr;
118 struct orangefs_param_response param;
119 struct orangefs_perf_count_response perf_count;
120 struct orangefs_fs_key_response fs_key;
121 struct orangefs_features_response features;
122 } resp;
123 };
124
125 /*
126 * The readdir response comes in the trailer. It is followed by the
127 * directory entries as described in dir.c.
128 */
129
130 struct orangefs_readdir_response_s {
131 __u64 token;
132 __u64 directory_version;
133 __u32 __pad2;
134 __u32 orangefs_dirent_outcount;
135 };
136
137 #endif /* __DOWNCALL_H */
138
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