LXR linux/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 */
  18struct orangefs_io_response {
  19        __s64 amt_complete;
  20};
  21
  22struct orangefs_lookup_response {
  23        struct orangefs_object_kref refn;
  24};
  25
  26struct orangefs_create_response {
  27        struct orangefs_object_kref refn;
  28};
  29
  30struct orangefs_symlink_response {
  31        struct orangefs_object_kref refn;
  32};
  33
  34struct orangefs_getattr_response {
  35        struct ORANGEFS_sys_attr_s attributes;
  36        char link_target[ORANGEFS_NAME_MAX];
  37};
  38
  39struct orangefs_mkdir_response {
  40        struct orangefs_object_kref refn;
  41};
  42
  43/*
  44 * duplication of some system interface structures so that I don't have
  45 * to allocate extra memory
  46 */
  47struct orangefs_dirent {
  48        char *d_name;
  49        int d_length;
  50        struct orangefs_khandle khandle;
  51};
  52
  53struct orangefs_statfs_response {
  54        __s64 block_size;
  55        __s64 blocks_total;
  56        __s64 blocks_avail;
  57        __s64 files_total;
  58        __s64 files_avail;
  59};
  60
  61struct orangefs_fs_mount_response {
  62        __s32 fs_id;
  63        __s32 id;
  64        struct orangefs_khandle root_khandle;
  65};
  66
  67/* the getxattr response is the attribute value */
  68struct orangefs_getxattr_response {
  69        __s32 val_sz;
  70        __s32 __pad1;
  71        char val[ORANGEFS_MAX_XATTR_VALUELEN];
  72};
  73
  74/* the listxattr response is an array of attribute names */
  75struct orangefs_listxattr_response {
  76        __s32 returned_count;
  77        __s32 __pad1;
  78        __u64 token;
  79        char key[ORANGEFS_MAX_XATTR_LISTLEN * ORANGEFS_MAX_XATTR_NAMELEN];
  80        __s32 keylen;
  81        __s32 __pad2;
  82        __s32 lengths[ORANGEFS_MAX_XATTR_LISTLEN];
  83};
  84
  85struct orangefs_param_response {
  86        union {
  87                __s64 value64;
  88                __s32 value32[2];
  89        } u;
  90};
  91
  92#define PERF_COUNT_BUF_SIZE 4096
  93struct orangefs_perf_count_response {
  94        char buffer[PERF_COUNT_BUF_SIZE];
  95};
  96
  97#define FS_KEY_BUF_SIZE 4096
  98struct orangefs_fs_key_response {
  99        __s32 fs_keylen;
 100        __s32 __pad1;
 101        char fs_key[FS_KEY_BUF_SIZE];
 102};
 103
 104/* 2.9.6 */
 105struct orangefs_features_response {
 106        __u64 features;
 107};
 108
 109struct orangefs_downcall_s {
 110        __s32 type;
 111        __s32 status;
 112        /* currently trailer is used only by readdir */
 113        __s64 trailer_size;
 114        char *trailer_buf;
 115
 116        union {
 117                struct orangefs_io_response io;
 118                struct orangefs_lookup_response lookup;
 119                struct orangefs_create_response create;
 120                struct orangefs_symlink_response sym;
 121                struct orangefs_getattr_response getattr;
 122                struct orangefs_mkdir_response mkdir;
 123                struct orangefs_statfs_response statfs;
 124                struct orangefs_fs_mount_response fs_mount;
 125                struct orangefs_getxattr_response getxattr;
 126                struct orangefs_listxattr_response listxattr;
 127                struct orangefs_param_response param;
 128                struct orangefs_perf_count_response perf_count;
 129                struct orangefs_fs_key_response fs_key;
 130                struct orangefs_features_response features;
 131        } resp;
 132};
 133
 134struct orangefs_readdir_response_s {
 135        __u64 token;
 136        __u64 directory_version;
 137        __u32 __pad2;
 138        __u32 orangefs_dirent_outcount;
 139        struct orangefs_dirent *dirent_array;
 140};
 141
 142#endif /* __DOWNCALL_H */
 143