source: gpfs_3.1_ker2.6.20/lpp/mmfs/src/ibm-kxi/cxiTSFattr.h @ 73

/***************************************************************************
 *
 * Copyright (C) 2001 International Business Machines
 * All rights reserved.
 *
 * This file is part of the GPFS mmfslinux kernel module.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice, 
 *     this list of conditions and the following disclaimer. 
 *  2. Redistributions in binary form must reproduce the above copyright 
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution. 
 *  3. The name of the author may not be used to endorse or promote products 
 *     derived from this software without specific prior written
 *     permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *************************************************************************** */
/* @(#)68       1.51  src/avs/fs/mmfs/ts/kernext/ibm-kxi/cxiTSFattr.h, mmfs, avs_rgpfs24, rgpfs24s003a 5/8/06 15:23:39 */

#ifndef _h_cxitsfattr
#define _h_cxitsfattr

#include <cxiTypes.h>

/* defines for command parameter in tsfattr() */
#define SET_BUFFERING          10
#define GET_BUFFERING          11
#define LIST_XATTR             12
#define GET_XATTR              13
#define SET_XATTR              14
#define GPFS_STATFSPOOL        15 
#define GPFS_GETPOOLNAME       16
/* #define GET_REPL_FACTORS       20  deprecated -- use gpfs_fcntl */
/* #define SET_REPL_FACTORS       21  deprecated -- use gpfs_fcntl */
#define REMOTE_STAT            22
#define IO_HINTS               24
#define PREALLOCATE_FILE       25
#define GET_ALL_ATTRS          27
#define PUT_ALL_ATTRS          28
#define PUT_ALL_ATTRS_WITH_NAME 29

#define PRIVILEGED_OPERATIONS  31   /* must be privileged user for operations
                                       bigger than PRIVILEGED_OPERATIONS */

#define GET_INODE_BLOCK        32
#define GET_DIR_BLOCK          33
#define SET_DIR_ENTRY          34
#define GPFS_IOPEN             35
#define GPFS_ICLOSE            36
#define GPFS_IREAD             37
#define GPFS_IWRITE            38
#define GPFS_IREAD_SYMLINK     39
#define GPFS_IGET_ATTRS        40
#define GPFS_IPUT_ATTRS        41
/* #define UNUSED                 42 */
#define GPFS_SYNC_FS           43
#define GPFS_START_RESTORE     44
#define GPFS_END_RESTORE       45
#define GPFS_FS_RESTORABLE     46
#define GPFS_IGET_FILESET      47
#define GPFS_IGET_STORAGEPOOL  48
#define GPFS_IREADX            49
#define GPFS_IWRITEX           50
#define GPFS_OPEN_FSSNAPHANDLE 51

/* define KERNEL_LOGGENERIC    97  Defined in tsfattrx.h */
/* define KERNEL_LOGSPECIFIC   98  Defined in tsfattrx.h */
/* define TEST_LOCK_PERF       99  Defined in tsfattrx.h */


/* If you add a new tsfattr command, also update trcfmt.common */
#define tsfattrcmd_id2name(s) ((int)(s))


/* defines for command parameter in tsfsattr() */
/*define PRIVILEGED_OPERATIONS  30    must be privileged user for operations
                                      bigger than PRIVILEGED_OPERATIONS */
#define GPFS_FSATTR_HANDLE_VIA_NAME     30
#define GPFS_FSATTR_HANDLE_VIA_ID       31
#define GPFS_FSATTR_PATH_VIA_HANDLE     32
#define GPFS_FSATTR_FSNAME_VIA_HANDLE   33
#define GPFS_FSATTR_SNAPNAME_VIA_HANDLE 34
#define GPFS_FSATTR_RESTORE_FSSNAPID_VIA_HANDLE 35
#define GPFS_FSATTR_GET_SNAPDIRNAME     36

/* If you add a new tsfsattr command, also update trcfmt.common */
#define tsfsattrcmd_id2name(s) ((int)(s))



/* Structure used to receive additional information regarding
   operation failures. */
typedef struct
{
  int reason;               /* reason request failed */
  int value1;               /* optional value depending upon reason */
  int value2;               /* optional value depending upon reason */
} tsfattrReasonCodeInfo;



/* Structure used to pass FILE_PREALLOCATION information */
struct filePreallocation
{
  long long offset;        /* in  - offset to start preallocation from */
  long long size;          /* in  - size of preallocation */
  int       flags;         /* in  - write flags */
};

/* Structure used to pass parameters for GET_ALL_ATTRS and PUT_ALL_ATTRS
   functions. For PUT_ALL_ATTRS_WITH_NAME, the attrSizeP points to the 
   pathName or NULL. */
struct xattrsparms
{
  int flags;       /* in - flags (must be zero, reserved for future use) */
  void *bufferP;   /* in - address of buffer containing or receiving
                           attribute data */
  int bufferSize;  /* in - size of the buffer (not used by PUT_ALL_ATTRS) */
  int *attrSizeP;  /* in - address where to return actual size of the data
                           (not used by PUT_ALL_ATTRS) */
};

/* Interface structures for gpfsStatFsPool() */
typedef struct
{
  UInt64    f_blocks;     /* total data blocks in pool */
  UInt64    f_bfree;      /* free blocks in pool */
  UInt64    f_bavail;     /* free blocks avail to non-superuser */
  UInt64    f_mblocks;    /* total metadata blocks in pool */
  UInt64    f_mfree;      /* free blocks avail for system metadata */
  int       f_bsize;      /* optimal storage pool block size */
  int       f_files;      /* total file nodes assigned to pool */
  UInt32    f_poolid;     /* storage pool id */
  int       f_fsize;      /* fundamental file system block size */
  unsigned int f_usage;   /* data and/or metadata stored in pool */
  int       f_reserved[7];/* currently unused and set to zero */
} cxiStatFsPool_t;

typedef struct 
{
  UInt32 poolId;
  UInt32 options;
  int    nPools;
  int    bufferSize;
  char  *bufferP;
} cxiStatFsPoolArgs_t;




/* Definitions for GPFS file attribute function */

#ifdef __cplusplus
extern "C"
{
#endif

  extern int tsfattr(int fileDesc,  /* Open file descriptor */
                     int command,   /* Control function to be performed */
                     void *argP,    /* Additional info required by function */
                     tsfattrReasonCodeInfo *rCodeP); /* More returned info*/

  extern int tsfsattr(int command,  /* Control function to be performed */
                      void *argP);  /* Additional info required by function */

  /* The tsattr call only supports the following commands:
       GET_REPL_FACTORS
   */
  extern int tsattr(char *pathname, /* File pathname */
                    int command,    /* Control function to be performed */
                    void *argP,     /* Additional info required by function */
                    tsfattrReasonCodeInfo *rCodeP); /* More returned info*/

/* Define type used to identify a file system. Internally, this is
   actually a DiskUID. Assignments to and from this id must be cast 
   as DiskUIDs to generate the correct byte-swapping code. */
typedef struct _gpfs_fs_id
{
  BigEndUInt32 word0;
  BigEndUInt32 word1;
} _gpfs_fs_id_t;

/* Structure used to hold snapshot id max size is 48 see gpfs_snap_id_t in
   gpfs.h. Note that the "_gpfs" prefix is used for an internal definition 
   of an externally defined structure. */
#define FSSNAPID_MAGIC 0xD00FF009
#define ISCAN_VERSION 1

typedef struct _gpfs_fssnap_id
{
  BigEndInt32 magic;           /* magic number                  */
  BigEndInt32 fmtVersion;      /* version from curFmtVersion    */
  BigEndInt64 snapId;          /* snapshot id                   */
  BigEndInt64 baseSnapId;      /* base id for snapshot          */
  _gpfs_fs_id_t stripeId;      /* FS id assigned at format time */
  _gpfs_fs_id_t baseStripeId;  /* base FS id for snapshot       */
  BigEndInt64 time;            /* time stamp (just second)      */
} _gpfs_fssnap_id_t;

 
/* Structure used to identify file system and snapshot 
   Note "_gpfs" is used for the internal version of an externally
   defined type. */
#define FSSNAPHANDLE_MAGIC 0xD00FF013
typedef struct _gpfs_fssnap_handle
{
  int  magic;                  /* magic number               */
  int fd;                      /* file descriptor            */
  _gpfs_fssnap_id_t fssnapId;  /* unique fs/snapshot id      */
  cxiIno_t maxIno;             /* maximum inode number       */
  int blockSize;               /* block size used by fs      */
  int pathNameSize;            /* size of path buffer        */
  char *pathNameP;             /* path buffer                */
  int fsNameSize;              /* size of fsName buffer      */
  char *fsNameP;               /* fsName buffer              */
  int snapNameSize;            /* size of snapName buffer    */
  char *snapNameP;             /* snapName buffer            */
} _gpfs_fssnap_handle_t;

/* Structure used to keep restore session information. */
#define RESTORE_MAGIC 0xD00FF015
typedef struct _gpfs_restore
{
  int  magic;                  /* magic number               */
  int  fd;                     /* file descriptor            */
  _gpfs_fssnap_id_t old_fssnapId;  /* id for last snapshot   */
  _gpfs_fssnap_id_t new_fssnapId;  /* id for new snapshot    */
} _gpfs_restore_t;

/* Define a structure used to pass control information
   for the restore start/end code. This structure is 
   internal to gpfs and not returned to the users. */
typedef struct gpfs_rcontrol
{
  int  flags;            /* restore flags              */
#define RESTORE_START       0x00000001
#define RESTORE_END         0x00000002
#define RESTORE_ENABLE      0x00000010
#define RESTORE_DISABLE     0x10000000

  Int32 fmtVersion;      /* version from curFmtVersion    */
  Int64 snapId;          /* snapshot id                   */
  _gpfs_fs_id_t stripeId;/* FS id assigned at format time */
  Int64 time;            /* time stamp (just second)      */
} gpfs_rcontrol_t;

/* Structure used to read a block of gpfs_iattr_t with the tsfattr commmand
   GET_INODE_BLOCK */
#define ISCAN_MAGIC 0xD00FF005
typedef struct _gpfs_iscan
{
  int  magic;                  /* magic number               */
  int  fd;                     /* file descriptor            */
  Int64 instanceID;            /* instance identifier        */
  long nextInode;              /* next Inode to read         */
  long termInode;              /* terminate before this ino  */
  long bufferSize;             /* size of buffer             */
  char *bufferP;               /* block of gpfs_iattr_t      */
  long lastOffset;             /* offset of last item        */
  long offset;                 /* used by caller only        */
  _gpfs_fssnap_id_t old_fssnapId;  /* snapId for last snapshot   */
  _gpfs_fssnap_id_t new_fssnapId;  /* snapId for new snapshot    */
  UInt32 cachedFilesetId;      /* id of cached fileset name           */
  int    cachedFilesetNameLen; /* length of cached fileset name       */
  char  *cachedFilesetNameP;   /* pointer to cached fileset name      */
  UInt32 cachedDataPoolId;     /* id of cached storage pool name      */
  int    cachedDataPoolNameLen; /* length of cached storage pool name */
  char  *cachedDataPoolNameP;  /* pointer to cached storage pool name */
} _gpfs_iscan_t;

#define CXI_INVALID_FILESET_ID     ((UInt32) -1) /* cached value */
#define CXI_INVALID_STORAGEPOOL_ID ((UInt32) -1) /*    is invalid */


/* Define internal structure used for block level incremental reads.
   Each call to gpfs_ireadx() returns an array of changes between
   the scanned file and its previous snapshot version. */
typedef struct gpfs_idelta
{
  int   hole;                   /* =0 if data changed in the following range
                                   =1 if a hole was created in that range */
  Int64 startOffset;            /* byte offset to start of change         */
  Int64 endOffset;              /* offset at end of changed region        */
} gpfs_idelta_t;

/* Structure used to pass extended attribute information
   for GET_XATTR and SET_XATTR */
struct tsxattrs
{
  int appId;              /* application id                   */
  int nattrs;             /* no of attributes to get or set   */
  struct tsxattr *attrs;  /* attributes to get or set         */
};

/* If this is modified, also make corresponding changes to
   tsxattrMB, which is used in mailbox communication */
struct tsxattr
{
  char *keyP;      /* attribute key              */
  int keyLen;      /* key length                 */
  char *valueP;    /* attribute value            */
  int valueLen;    /* length of attribute value  */
};

/* Structure used to read/write by inode number. */
#define IFILE_MAGIC 0xD00FF011
#define DIRX_BUFFER_SIZE (16*1024)
#define DELTA_BUFFER_SIZE (sizeof(gpfs_idelta_t) * 128)
#define MAX_FILE_OFFSET MAX_INT64

typedef struct _gpfs_ifile
{
  int  magic;                  /* magic number               */
  int  fd;                     /* file descriptor for root   */
  long ino;                    /* inode number               */
  int genNo;                   /* inode generation number    */
  Int64 snapId;                /* snapshot ID                */
  int open_flags;              /* open flags                 */
  cxiMode_t mode;              /* mode of file being read    */
  const char *symlinkP;        /* optional symlink           */
  char *bufferP;               /* buffer for read/write      */
  long bufferSize;             /* size of buffer             */
  Int64 offset;                /* offset to read/write from  */
  Int64 count;                 /* length to read/write       */
  int dirCount;                /* number of directory entries*/
  char *dirBufferP;            /* buffer for directory read  */
  long dirBufferSize;          /* size of dir buffer         */
  offset_t dirOffset;          /* offset in directory buffer */
  offset_t lastOffset;         /* offset of last item        */
  struct gpfs_iattr *statxP;   /* optional for open/create   */
  void *vP;                    /* inode/vnode (OS dependent)
                                  NOTE: This value cannot be trusted
                                  between calls to the kernel. */
  int *attrSizeP;              /* ptr to rtnd value for iget_attrs */

  /* Define fields for block-level incremental read/write */
  Int64 prevSnapId;            /* prev snapId                */
  _gpfs_fs_id_t prevStripeId;  /* prev stripeId              */
  int hole;                    /* read/write a hole          */
  int callBlockLevel;          /* if >=0 then call ireadx 
                                  if < 0 then call iread     */
  Int64 fileSize;              /* size of file when reading deltas */
  Int64 firstOffset;           /* start of range covered by deltas */
  Int64 nextOffset;            /* in: limit on single ireadx
                                  out: next offset to read   */ 
} _gpfs_ifile_t;

#ifdef __cplusplus
}
#endif

int myFillDir(void *fillDirArgP, const char *nameP, int namlen,
              offset_t offset, ino_t ino, cxiMode_t mode, int generation);

#endif /* _h_cxitsfattr */