fs/orangefs/downcall.h

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