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111 lines
4.1 KiB
C
111 lines
4.1 KiB
C
/*
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* Copyright 2000, International Business Machines Corporation and others.
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* All Rights Reserved.
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*
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* This software has been released under the terms of the IBM Public
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* License. For details, see the LICENSE file in the top-level source
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* directory or online at http://www.openafs.org/dl/license10.html
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*/
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/*
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System: VICE-TWO
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Module: partition.h
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Institution: The Information Technology Center, Carnegie-Mellon University
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*/
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#include <afs/param.h>
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#include "nfs.h"
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#if defined(AFS_HPUX_ENV)
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#define AFS_DSKDEV "/dev/dsk"
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#define AFS_RDSKDEV "/dev/rdsk/"
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#define AFS_LVOLDEV "/dev/vg0"
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#define AFS_ACVOLDEV "/dev/ac"
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#define AFS_RACVOLDEV "/dev/ac/r"
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#else
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#define AFS_DSKDEV "/dev"
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#define AFS_RDSKDEV "/dev/r"
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#endif
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/* All Vice partitions on a server will have the following name prefix */
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#define VICE_PARTITION_PREFIX "/vicep"
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#define VICE_PREFIX_SIZE (sizeof(VICE_PARTITION_PREFIX)-1)
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/* If a file by this name exists in a /vicepX directory, it means that
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* this directory should be used as an AFS partition even if it's not
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* on a separate partition (for instance if it's part of a large /).
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* This feature only works with the NAMEI fileserver.
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*/
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#ifdef AFS_NAMEI_ENV
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#define VICE_ALWAYSATTACH_FILE "AlwaysAttach"
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#endif
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/* For NT, the roles of "name" and "devName" are reversed. That is, "name"
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* refers to the drive letter name and "devName" refers to the /vicep style
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* or name. The reason for this is that a lot of places assume that "name"
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* is the right thing to use to access the partition. Silly of them isn't it?
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* The NT version of VInitPartition does the intial setup. There is an NT
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* variant for VGetPartition as well. Also, the VolPartitionInfo RPC does
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* a swap before sending the data out on the wire.
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*/
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struct DiskPartition {
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struct DiskPartition *next;
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char *name; /* Mounted partition name */
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char *devName; /* Device mounted on */
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Device device; /* device number */
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int lock_fd; /* File descriptor of this partition if locked; otherwise -1;
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* Not used by the file server */
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int free; /* Total number of blocks (1K) presumed
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* available on this partition (accounting
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* for the minfree parameter for the
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* partition). This is adjusted
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* approximately by the sizes of files
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* and directories read/written, and
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* periodically the superblock is read and
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* this is recomputed. This number can
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* be negative, if the partition starts
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* out too full */
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int totalUsable; /* Total number of blocks available on this
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* partition, taking into account the minfree
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* parameter for the partition (see the
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* 4.2bsd command tunefs, but note that the
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* bug mentioned there--that the superblock
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* is not reread--does not apply here. The
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* superblock is re-read periodically by
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* VSetPartitionDiskUsage().) */
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int minFree; /* Number blocks to be kept free, as last read
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* from the superblock */
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int flags;
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int f_files; /* total number of files in this partition */
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};
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#define PART_DONTUPDATE 1
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#define PART_DUPLICATE 2 /* NT - used if we find more than one partition
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* using the same drive. Will be dumped before
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* all partitions attached.
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*/
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#ifdef AFS_NT40_ENV
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#include <WINNT/vptab.h>
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extern int VValidVPTEntry(struct vptab *vptp);
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#endif
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struct Volume; /* Potentially forward definition */
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extern struct DiskPartition *DiskPartitionList;
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extern struct DiskPartition *VGetPartition();
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extern int VAttachPartitions(void);
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extern void VLockPartition(char *name);
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extern void VLockPartition_r(char *name);
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extern void VUnlockPartition(char *name);
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extern void VUnlockPartition_r(char *name);
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extern void VResetDiskUsage(void);
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extern void VResetDiskUsage_r(void);
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extern void VSetPartitionDiskUsage(register struct DiskPartition *dp);
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extern void VSetPartitionDiskUsage_r(register struct DiskPartition *dp);
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extern char *VPartitionPath(struct DiskPartition *p);
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extern void VAdjustDiskUsage(Error * ec, struct Volume *vp,
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afs_sfsize_t blocks, afs_sfsize_t checkBlocks);
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extern int VDiskUsage(struct Volume *vp, afs_sfsize_t blocks);
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extern void VPrintDiskStats(void);
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