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/*
* (C) 2001 Clemson University and The University of Chicago
*
* See COPYING in top-level directory.
*/
/*
* Definitions of downcalls used in Linux kernel module.
*/
#ifndef __DOWNCALL_H
#define __DOWNCALL_H
/*
* Sanitized the device-client core interaction
* for clean 32-64 bit usage
*/
struct pvfs2_io_response {
__s64 amt_complete;
};
struct pvfs2_lookup_response {
struct pvfs2_object_kref refn;
};
struct pvfs2_create_response {
struct pvfs2_object_kref refn;
};
struct pvfs2_symlink_response {
struct pvfs2_object_kref refn;
};
struct pvfs2_getattr_response {
struct PVFS_sys_attr_s attributes;
char link_target[PVFS2_NAME_LEN];
};
struct pvfs2_mkdir_response {
struct pvfs2_object_kref refn;
};
/*
* duplication of some system interface structures so that I don't have
* to allocate extra memory
*/
struct pvfs2_dirent {
char *d_name;
int d_length;
struct pvfs2_khandle khandle;
};
struct pvfs2_statfs_response {
__s64 block_size;
__s64 blocks_total;
__s64 blocks_avail;
__s64 files_total;
__s64 files_avail;
};
struct pvfs2_fs_mount_response {
__s32 fs_id;
__s32 id;
struct pvfs2_khandle root_khandle;
};
/* the getxattr response is the attribute value */
struct pvfs2_getxattr_response {
__s32 val_sz;
__s32 __pad1;
char val[PVFS_MAX_XATTR_VALUELEN];
};
/* the listxattr response is an array of attribute names */
struct pvfs2_listxattr_response {
__s32 returned_count;
__s32 __pad1;
__u64 token;
char key[PVFS_MAX_XATTR_LISTLEN * PVFS_MAX_XATTR_NAMELEN];
__s32 keylen;
__s32 __pad2;
__s32 lengths[PVFS_MAX_XATTR_LISTLEN];
};
struct pvfs2_param_response {
__s64 value;
};
#define PERF_COUNT_BUF_SIZE 4096
struct pvfs2_perf_count_response {
char buffer[PERF_COUNT_BUF_SIZE];
};
#define FS_KEY_BUF_SIZE 4096
struct pvfs2_fs_key_response {
__s32 fs_keylen;
__s32 __pad1;
char fs_key[FS_KEY_BUF_SIZE];
};
struct pvfs2_downcall_s {
__s32 type;
__s32 status;
/* currently trailer is used only by readdir */
__s64 trailer_size;
char *trailer_buf;
union {
struct pvfs2_io_response io;
struct pvfs2_lookup_response lookup;
struct pvfs2_create_response create;
struct pvfs2_symlink_response sym;
struct pvfs2_getattr_response getattr;
struct pvfs2_mkdir_response mkdir;
struct pvfs2_statfs_response statfs;
struct pvfs2_fs_mount_response fs_mount;
struct pvfs2_getxattr_response getxattr;
struct pvfs2_listxattr_response listxattr;
struct pvfs2_param_response param;
struct pvfs2_perf_count_response perf_count;
struct pvfs2_fs_key_response fs_key;
} resp;
};
struct pvfs2_readdir_response_s {
__u64 token;
__u64 directory_version;
__u32 __pad2;
__u32 pvfs_dirent_outcount;
struct pvfs2_dirent *dirent_array;
};
#endif /* __DOWNCALL_H */
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