103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
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/*
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* (C) 2001 Clemson University and The University of Chicago
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*
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* See COPYING in top-level directory.
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*/
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#ifndef _PVFS2_DEV_PROTO_H
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#define _PVFS2_DEV_PROTO_H
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/*
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* types and constants shared between user space and kernel space for
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* device interaction using a common protocol
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*/
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/*
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* valid pvfs2 kernel operation types
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*/
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#define PVFS2_VFS_OP_INVALID 0xFF000000
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#define PVFS2_VFS_OP_FILE_IO 0xFF000001
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#define PVFS2_VFS_OP_LOOKUP 0xFF000002
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#define PVFS2_VFS_OP_CREATE 0xFF000003
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#define PVFS2_VFS_OP_GETATTR 0xFF000004
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#define PVFS2_VFS_OP_REMOVE 0xFF000005
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#define PVFS2_VFS_OP_MKDIR 0xFF000006
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#define PVFS2_VFS_OP_READDIR 0xFF000007
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#define PVFS2_VFS_OP_SETATTR 0xFF000008
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#define PVFS2_VFS_OP_SYMLINK 0xFF000009
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#define PVFS2_VFS_OP_RENAME 0xFF00000A
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#define PVFS2_VFS_OP_STATFS 0xFF00000B
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#define PVFS2_VFS_OP_TRUNCATE 0xFF00000C
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#define PVFS2_VFS_OP_MMAP_RA_FLUSH 0xFF00000D
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#define PVFS2_VFS_OP_FS_MOUNT 0xFF00000E
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#define PVFS2_VFS_OP_FS_UMOUNT 0xFF00000F
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#define PVFS2_VFS_OP_GETXATTR 0xFF000010
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#define PVFS2_VFS_OP_SETXATTR 0xFF000011
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#define PVFS2_VFS_OP_LISTXATTR 0xFF000012
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#define PVFS2_VFS_OP_REMOVEXATTR 0xFF000013
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#define PVFS2_VFS_OP_PARAM 0xFF000014
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#define PVFS2_VFS_OP_PERF_COUNT 0xFF000015
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#define PVFS2_VFS_OP_CANCEL 0xFF00EE00
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#define PVFS2_VFS_OP_FSYNC 0xFF00EE01
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#define PVFS2_VFS_OP_FSKEY 0xFF00EE02
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#define PVFS2_VFS_OP_READDIRPLUS 0xFF00EE03
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#define PVFS2_VFS_OP_FILE_IOX 0xFF00EE04
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/*
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* Misc constants. Please retain them as multiples of 8!
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* Otherwise 32-64 bit interactions will be messed up :)
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*/
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#define PVFS2_NAME_LEN 0x00000100
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#define PVFS2_MAX_DEBUG_STRING_LEN 0x00000400
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#define PVFS2_MAX_DEBUG_ARRAY_LEN 0x00000800
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/*
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* MAX_DIRENT_COUNT cannot be larger than PVFS_REQ_LIMIT_LISTATTR.
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* The value of PVFS_REQ_LIMIT_LISTATTR has been changed from 113 to 60
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* to accomodate an attribute object with mirrored handles.
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* MAX_DIRENT_COUNT is replaced by MAX_DIRENT_COUNT_READDIR and
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* MAX_DIRENT_COUNT_READDIRPLUS, since readdir doesn't trigger a listattr
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* but readdirplus might.
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*/
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#define MAX_DIRENT_COUNT_READDIR 0x00000060
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#define MAX_DIRENT_COUNT_READDIRPLUS 0x0000003C
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#include "upcall.h"
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#include "downcall.h"
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/*
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* These macros differ from proto macros in that they don't do any
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* byte-swappings and are used to ensure that kernel-clientcore interactions
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* don't cause any unaligned accesses etc on 64 bit machines
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*/
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#ifndef roundup4
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#define roundup4(x) (((x)+3) & ~3)
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#endif
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#ifndef roundup8
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#define roundup8(x) (((x)+7) & ~7)
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#endif
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/* strings; decoding just points into existing character data */
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#define enc_string(pptr, pbuf) do { \
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__u32 len = strlen(*pbuf); \
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*(__u32 *) *(pptr) = (len); \
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memcpy(*(pptr)+4, *pbuf, len+1); \
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*(pptr) += roundup8(4 + len + 1); \
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} while (0)
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#define dec_string(pptr, pbuf, plen) do { \
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__u32 len = (*(__u32 *) *(pptr)); \
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*pbuf = *(pptr) + 4; \
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*(pptr) += roundup8(4 + len + 1); \
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if (plen) \
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*plen = len;\
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} while (0)
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struct read_write_x {
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__s64 off;
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__s64 len;
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};
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#endif
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