LXR linux/fs/orangefs/downcall.h

   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 */
  19struct orangefs_io_response {
  20        __s64 amt_complete;
  21};
  22
  23struct orangefs_lookup_response {
  24        struct orangefs_object_kref refn;
  25};
  26
  27struct orangefs_create_response {
  28        struct orangefs_object_kref refn;
  29};
  30
  31struct orangefs_symlink_response {
  32        struct orangefs_object_kref refn;
  33};
  34
  35struct orangefs_getattr_response {
  36        struct ORANGEFS_sys_attr_s attributes;
  37        char link_target[ORANGEFS_NAME_MAX];
  38};
  39
  40struct orangefs_mkdir_response {
  41        struct orangefs_object_kref refn;
  42};
  43
  44struct 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
  52struct 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 */
  59struct 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 */
  66struct 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
  76struct orangefs_param_response {
  77        union {
  78                __s64 value64;
  79                __s32 value32[2];
  80        } u;
  81};
  82
  83#define PERF_COUNT_BUF_SIZE 4096
  84struct orangefs_perf_count_response {
  85        char buffer[PERF_COUNT_BUF_SIZE];
  86};
  87
  88#define FS_KEY_BUF_SIZE 4096
  89struct 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 */
  96struct orangefs_features_response {
  97        __u64 features;
  98};
  99
 100struct 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
 130struct 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