| [16] | 1 | /*************************************************************************** |
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| 2 | * |
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| 3 | * Copyright (C) 2001 International Business Machines |
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| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * This file is part of the GPFS mmfslinux kernel module. |
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| 7 | * |
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| 8 | * Redistribution and use in source and binary forms, with or without |
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| 9 | * modification, are permitted provided that the following conditions |
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| 10 | * are met: |
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| 11 | * |
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| 12 | * 1. Redistributions of source code must retain the above copyright notice, |
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| 13 | * this list of conditions and the following disclaimer. |
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 15 | * notice, this list of conditions and the following disclaimer in the |
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| 16 | * documentation and/or other materials provided with the distribution. |
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| 17 | * 3. The name of the author may not be used to endorse or promote products |
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| 18 | * derived from this software without specific prior written |
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| 19 | * permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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| 27 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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| 28 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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| 29 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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| 30 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 31 | * |
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| 32 | *************************************************************************** */ |
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| 33 | /* @(#)92 1.77.1.1 src/avs/fs/mmfs/ts/kernext/ibm-kxi/cxiSystem.h, mmfs, avs_rgpfs24, rgpfs24s005a 7/25/06 19:21:11 */ |
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| 34 | /* |
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| 35 | * Interface definitions for basic common services, platform independent |
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| 36 | * version. Interfaces in the first section of this file may be used by code |
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| 37 | * running either in a process or in the kernel, while interfaces defined |
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| 38 | * in the second section of this file may only be used by code running in the |
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| 39 | * kernel. |
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| 40 | * |
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| 41 | * Process and kernel interfaces: |
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| 42 | * cxiGetThreadId - get thread identifier |
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| 43 | * |
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| 44 | * Kernel-only memory allocation services: |
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| 45 | * void* cxiMallocPinned(int nBytes) |
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| 46 | * void* cxiMallocUnpinned(int nBytes) |
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| 47 | * void cxiFreePinned(void* p) |
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| 48 | * void cxiFreeUnpinned(void* p) |
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| 49 | * |
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| 50 | * Kernel-only interfaces: |
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| 51 | * cxiIsSuperUser - return true if caller has maximum authorization |
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| 52 | * cxiGetMaxFileSize - return the maximum file size the calling process |
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| 53 | * is allowed to create. A value of cxiUnlimitedFileSize means file |
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| 54 | * sizes are not limited. |
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| 55 | * cxiUiomove - transfer data from buffer(s) in user space to or from |
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| 56 | * a buffer in the kernel. |
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| 57 | * |
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| 58 | */ |
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| 59 | |
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| 60 | #ifndef _h_cxiSystem |
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| 61 | #define _h_cxiSystem |
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| 62 | |
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| 63 | #include <cxiTypes.h> |
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| 64 | |
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| 65 | #ifdef NFS4_CLUSTER |
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| 66 | #if LINUX_KERNEL_VERSION >= 2061500 |
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| 67 | # define NFS_CLUSTER_LOCKS |
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| 68 | #endif |
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| 69 | #endif |
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| 70 | |
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| 71 | /* Prototypes for OS dependent entry points called by GPFS. |
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| 72 | * If any of these should become macros for certain OSes then |
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| 73 | * this definition will have to move into the platform specific |
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| 74 | * system file. |
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| 75 | */ |
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| 76 | #ifdef __cplusplus |
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| 77 | extern "C" |
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| 78 | { |
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| 79 | #endif /* __cplusplus */ |
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| 80 | |
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| 81 | int cxiFindOSNode(void *osVfsP, struct cxiNode_t *, void **osNodePP, |
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| 82 | Boolean); |
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| 83 | int cxiNewOSNode(void *osVfsP, struct cxiNode_t **, void **osNodePP, |
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| 84 | cxiIno_t, int, void *opaqueP); |
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| 85 | int cxiReactivateOSNode(void *osVfsP, struct cxiNode_t *, void **osNodePP); |
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| 86 | |
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| 87 | int cxiRefOSNode(void *osVfsP, struct cxiNode_t *, void *osNodeP, int); |
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| 88 | int cxiRefOsNode(void *osVfsP, struct cxiNode_t *, void *osNodeP, int, |
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| 89 | Boolean calledFromRevoke); |
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| 90 | int cxiInactiveOSNode(void *osVfsP, struct cxiNode_t *, void *osNodeP, |
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| 91 | Boolean *, Boolean *); |
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| 92 | |
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| 93 | int cxiRegisterCleanup(); |
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| 94 | |
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| 95 | void cxiPutOSNode(void *vP); |
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| 96 | void cxiDestroyOSNode(void *vP); |
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| 97 | void cxiDumpOSNode(struct cxiNode_t *); |
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| 98 | void cxiFreeOSNode(void *osVfsP, struct cxiNode_t *, void *osNodeP); |
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| 99 | void cxiReinitOSNode(void *osVfsP, struct cxiNode_t *, void *osNodeP); |
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| 100 | int cxiPruneDCacheEntry(cxiNode_t *cnP); |
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| 101 | int cxiInvalidateDCacheEntry(cxiNode_t *cnP); |
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| 102 | void cxiDropInvalidDCacheEntry(cxiNode_t *cnP); |
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| 103 | int cxiInvalidateNegDCacheEntry(cxiNode_t *cnP); |
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| 104 | void cxiInvalidatePerm(cxiNode_t *cnP); |
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| 105 | void cxiUpdateInode(cxiNode_t *cnP, cxiVattr_t *attrP, int what); |
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| 106 | |
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| 107 | void cxiSetOSNodeType(cxiNode_t *cnP, cxiMode_t mode, cxiDev_t dev); |
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| 108 | void cxiSetOSNode(void *osVfsP, cxiNode_t *cnP, cxiVattr_t *vattrP); |
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| 109 | |
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| 110 | int cxiSetMountInfo(void *osVfsP, cxiDev_t, int bsize, void *osRootNodeP, |
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| 111 | struct cxiNode_t *cnRootP, Boolean *releRootP, |
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| 112 | void *gnRootP, fsid_t fsid); |
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| 113 | int cxiUnmount(void *osVfsP, Boolean force, Boolean doDMEvents); |
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| 114 | int cxiIsVfsMounted(void *osVfsP); |
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| 115 | |
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| 116 | int cxiFcntlLock(void *fP, int cmd, void *flP, |
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| 117 | cxiFlock_t *flockP, int (*retryCB)(), |
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| 118 | cxiOff64_t size, cxiOff64_t offset, |
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| 119 | unsigned long *retry_idP); |
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| 120 | int cxiFcntlReset(void *vfsP, cxiPid_t mmfsd_pid); |
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| 121 | void cxiFcntlUnblock(void *retry_idP); |
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| 122 | int cxiTrace(cxiTrace_t trace); |
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| 123 | void cxiFlockToVFS(eflock_t* lckdatP, void* vP); |
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| 124 | void cxiVFSToFlock(void *vP, eflock_t* lckdatP); |
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| 125 | int cxiVFSCallback(eflock_t* lckreqP, eflock_t* lckdatP, |
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| 126 | int(* callback)(void *, void *, int), int result); |
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| 127 | |
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| 128 | void cxiOpenNFS(void *vP); |
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| 129 | int cxiCloseNFS(void *vP, void *viP); |
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| 130 | void cxiSetNFSCluster(int set); |
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| 131 | void cxiNFSError(int rc, const char *str); |
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| 132 | #define cxiErrorNFS(rc) cxiNFSError(rc, __FUNCTION__) |
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| 133 | |
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| 134 | void *cxiGetNfsP(void *vP); |
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| 135 | void cxiSetNfsP(void *vP, void *newP); |
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| 136 | void *cxiGetCnP(void *vP); |
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| 137 | void *cxiGetPvP(void *vP); |
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| 138 | void *cxiGNPtoVP(void *vP); |
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| 139 | void *cxiGetPrivVfsP(void *vP); |
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| 140 | |
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| 141 | #ifdef _KERNEL |
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| 142 | cxiPid_t cxiStartKProc(struct cxiKProcData_t *); |
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| 143 | void cxiStopKProc(struct cxiKProcData_t *); |
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| 144 | #endif |
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| 145 | void cxiSleep(int ms); |
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| 146 | |
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| 147 | #ifdef SMB_LOCKS |
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| 148 | void *cxiCheckOpen(struct cxiNode_t* cnP); |
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| 149 | int setSMBOpenLockControl(void *vP, void *infoP, int command, int lockmode); |
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| 150 | int setSMBOplock(void *vP, void *infoP, int accessWant, int oplockWant, |
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| 151 | void *breakArgP, int *oplockGrantedP, Boolean isAsync); |
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| 152 | int breakSMBOplock(cxiDev_t dev, cxiIno_t ino, int oplockCurrent, int oplockNew, |
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| 153 | void *breakArgP, void *fileArgP, void *nfs4_cookie, |
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| 154 | int timeoutSeconds); |
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| 155 | int cxiInitBreakQ(); |
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| 156 | int cxiTermBreakQ(); |
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| 157 | int cxiBreakOplock(void *breakArgP, int oplockNew); |
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| 158 | int cxiWaitForBreak(void *fileArgP, int oplockCurrent, int timeoutSeconds); |
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| 159 | int cxiSendBreakMsg(void *ofP); |
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| 160 | #endif |
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| 161 | |
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| 162 | int cxiGetCred(void *bufP, void **uCredPP, void **eCredPP); |
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| 163 | int cxiPutCred(void *userCredP, void *extCredP); |
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| 164 | |
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| 165 | /* Insure that our type definitions match any OS definitions */ |
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| 166 | int cxiCheckTypes(); |
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| 167 | |
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| 168 | #ifdef DISK_LEASE_DMS |
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| 169 | #define MAX_DMS_INDEX 32 |
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| 170 | EXTERNC void cxiStartDMS(int idx, int delay, int (*funcP)(int)); |
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| 171 | EXTERNC void cxiStopDMS(int idx); |
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| 172 | EXTERNC int cxiInitDMS(); |
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| 173 | EXTERNC void cxiShutdownDMS(); |
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| 174 | #else |
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| 175 | #define MAX_DMS_INDEX 1 |
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| 176 | #endif |
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| 177 | |
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| 178 | #ifdef __cplusplus |
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| 179 | } |
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| 180 | #endif /* __cplusplus */ |
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| 181 | |
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| 182 | /* Values for 'what' parameter to cxiUpdateInode and statUpdateOSNode: |
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| 183 | Selectively updated the OS node attributes. */ |
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| 184 | #define CXIUP_NLINK 0x00000001 /* update nlink */ |
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| 185 | #define CXIUP_MODE 0x00000002 /* update mode and ctime */ |
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| 186 | #define CXIUP_OWN 0x00000004 /* update mode,uid,gid and ctime */ |
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| 187 | #define CXIUP_SIZE 0x00000008 /* update fsize */ |
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| 188 | #define CXIUP_SIZE_BIG 0x00000010 /* update fsize if bigger */ |
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| 189 | #define CXIUP_TIMES 0x00000020 /* update all times */ |
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| 190 | #define CXIUP_ATIME 0x00000040 /* update atime only, other flags are not |
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| 191 | checked */ |
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| 192 | #define CXIUP_PERM 0x00000080 /* update fields needed for permission |
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| 193 | checking */ |
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| 194 | |
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| 195 | #define cxiDev32Major(x) (Int32)((unsigned)(x)>>16) |
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| 196 | #define cxiDev32Minor(x) (Int32)((x)&0xFFFF) |
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| 197 | |
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| 198 | /* Maximum number of simultaneous threads (must be a power of 2) */ |
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| 199 | #ifdef __64BIT__ |
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| 200 | #define MAX_GPFS_THREADS 1024 |
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| 201 | #define MAX_RCVWORKER_POOL 256 |
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| 202 | #else |
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| 203 | #define MAX_GPFS_THREADS 512 |
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| 204 | #define MAX_RCVWORKER_POOL 128 |
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| 205 | #endif |
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| 206 | |
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| 207 | /* Include platform-specific versions of interfaces to common exported |
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| 208 | services */ |
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| 209 | #include <cxiSystem-plat.h> |
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| 210 | |
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| 211 | #define MAX_READDIR_BUF_SIZE 65536 |
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| 212 | |
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| 213 | #ifdef NFS4_ACL |
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| 214 | /* Kernel routine to be called for NFSv4 audit ACL entries */ |
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| 215 | EXTERNC int cxiAuditWrite(int numargs, ...); |
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| 216 | |
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| 217 | /* Kernel routine to be called for NFSv4 alarm ACL entries */ |
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| 218 | static int cxiAlarmWrite(int numargs, ...) { return -1; } |
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| 219 | |
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| 220 | /* Values for gpfsOpen internal flags (iflags) argument */ |
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| 221 | #define GPFS_OPEN_NO_SMBLOCK 0x00000001 /* Don't obtain OpenLk */ |
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| 222 | #define GPFS_OPEN_VCM_OBJECT 0x00000002 /* No SMB locking */ |
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| 223 | #endif /* NFS4_ACL */ |
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| 224 | |
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| 225 | #endif /* _h_cxiSystem */ |
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| 226 | |
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