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driver: static allocation for upcall, fcb lists

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macros now expect a non-pointer argument for pList
removed unused pList argument from nfs41_Removeentry()
call to IsListEmpty(&pNetRootContext->mounts.head) changed to nfs41_IsListEmpty() which does locking

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2012-05-04 15:11:50 -04:00 • committed by unknown
parent 2e10b99489
commit e3de3cf564
1 changed files with 51 additions and 77 deletions
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124
sys/nfs41_driver.c
View file

@ -274,7 +274,7 @@ typedef struct _updowncall_entry {
typedef struct _updowncall_list {
LIST_ENTRY head;
} nfs41_updowncall_list;
nfs41_updowncall_list *upcall = NULL, *downcall = NULL;
nfs41_updowncall_list upcall, downcall;
typedef struct _nfs41_mount_entry {
LIST_ENTRY next;
@ -289,39 +289,39 @@ typedef struct _nfs41_mount_list {
LIST_ENTRY head;
} nfs41_mount_list;
#define nfs41_AddEntry(lock,pList,pEntry) \
#define nfs41_AddEntry(lock,list,pEntry) \
ExAcquireFastMutex(&lock); \
InsertTailList(&(pList)->head, &(pEntry)->next);\
InsertTailList(&(list).head, &(pEntry)->next); \
ExReleaseFastMutex(&lock);
#define nfs41_RemoveFirst(lock,pList,pEntry) \
#define nfs41_RemoveFirst(lock,list,pEntry) \
ExAcquireFastMutex(&lock); \
pEntry = (IsListEmpty(&(pList)->head) \
pEntry = (IsListEmpty(&(list).head) \
? NULL \
: RemoveHeadList(&pList->head)); \
: RemoveHeadList(&(list).head)); \
ExReleaseFastMutex(&lock);
#define nfs41_RemoveEntry(lock,pList,pEntry) \
#define nfs41_RemoveEntry(lock,pEntry) \
ExAcquireFastMutex(&lock); \
RemoveEntryList(&pEntry->next); \
ExReleaseFastMutex(&lock);
#define nfs41_IsListEmpty(lock,pList,flag) \
#define nfs41_IsListEmpty(lock,list,flag) \
ExAcquireFastMutex(&lock); \
*flag = IsListEmpty(&pList->head); \
flag = IsListEmpty(&(list).head); \
ExReleaseFastMutex(&lock);
#define nfs41_GetFirstEntry(lock,pList,pEntry) \
#define nfs41_GetFirstEntry(lock,list,pEntry) \
ExAcquireFastMutex(&lock); \
pEntry = (IsListEmpty(&pList->head) \
pEntry = (IsListEmpty(&(list).head) \
? NULL \
: (nfs41_updowncall_entry *) \
(CONTAINING_RECORD(pList->head.Flink, \
(CONTAINING_RECORD((list).head.Flink, \
nfs41_updowncall_entry, \
next))); \
ExReleaseFastMutex(&lock);
#define nfs41_GetFirstMountEntry(lock,pList,pEntry) \
#define nfs41_GetFirstMountEntry(lock,list,pEntry) \
ExAcquireFastMutex(&lock); \
pEntry = (IsListEmpty(&(pList)->head) \
pEntry = (IsListEmpty(&(list).head) \
? NULL \
: (nfs41_mount_entry *) \
(CONTAINING_RECORD((pList)->head.Flink, \
(CONTAINING_RECORD((list).head.Flink, \
nfs41_mount_entry, \
next))); \
ExReleaseFastMutex(&lock);
@ -463,7 +463,7 @@ typedef struct _nfs41_fcb_list_entry {
typedef struct _nfs41_fcb_list {
LIST_ENTRY head;
} nfs41_fcb_list;
nfs41_fcb_list *openlist = NULL;
nfs41_fcb_list openlist;
typedef enum _NULMRX_STORAGE_TYPE_CODES {
NTC_NFS41_DEVICE_EXTENSION = (NODE_TYPE_CODE)0xFC00,
@ -1543,7 +1543,7 @@ NTSTATUS nfs41_UpcallWaitForReply(
ExReleaseFastMutex(&entry->lock);
goto out;
}
nfs41_RemoveEntry(downcallLock, downcall, entry);
nfs41_RemoveEntry(downcallLock, entry);
out:
return status;
}
@ -1862,7 +1862,7 @@ NTSTATUS nfs41_downcall(
unmarshal_nfs41_header(tmp, &buf);
ExAcquireFastMutex(&downcallLock);
pEntry = &downcall->head;
pEntry = &downcall.head;
pEntry = pEntry->Flink;
while (pEntry != NULL) {
cur = (nfs41_updowncall_entry *)CONTAINING_RECORD(pEntry,
@ -1871,7 +1871,7 @@ NTSTATUS nfs41_downcall(
found = 1;
break;
}
if (pEntry->Flink == &downcall->head)
if (pEntry->Flink == &downcall.head)
break;
pEntry = pEntry->Flink;
}
@ -1905,7 +1905,7 @@ NTSTATUS nfs41_downcall(
break;
}
ExReleaseFastMutex(&cur->lock);
nfs41_RemoveEntry(downcallLock, downcall, cur);
nfs41_RemoveEntry(downcallLock, cur);
RxFreePool(cur);
status = STATUS_UNSUCCESSFUL;
goto out_free;
@ -1968,7 +1968,7 @@ NTSTATUS nfs41_downcall(
map_readwrite_errors(cur->status);
cur->u.ReadWrite.rxcontext->InformationToReturn = 0;
}
nfs41_RemoveEntry(downcallLock, downcall, cur);
nfs41_RemoveEntry(downcallLock, cur);
RxLowIoCompletion(cur->u.ReadWrite.rxcontext);
RxFreePool(cur);
} else
@ -3056,10 +3056,11 @@ NTSTATUS nfs41_CreateVNetRoot(
&pVNetRootContext->session, &nfs41d_version,
&pVNetRootContext->FsAttrs);
if (status != STATUS_SUCCESS) {
if (!found_existing_mount &&
IsListEmpty(&pNetRootContext->mounts.head)) {
BOOLEAN MountsEmpty;
nfs41_IsListEmpty(pNetRootContext->mountLock,
pNetRootContext->mounts, MountsEmpty);
if (!found_existing_mount && MountsEmpty)
pNetRootContext->mounts_init = FALSE;
}
pVNetRootContext->session = INVALID_HANDLE_VALUE;
goto out_free;
}
@ -3087,7 +3088,8 @@ NTSTATUS nfs41_CreateVNetRoot(
entry->gssp_session = pVNetRootContext->session; break;
}
RtlCopyLuid(&entry->login_id, &luid);
nfs41_AddEntry(pNetRootContext->mountLock, &pNetRootContext->mounts, entry);
nfs41_AddEntry(pNetRootContext->mountLock,
pNetRootContext->mounts, entry);
} else if (!found_matching_flavor) {
ASSERT(existing_mount != NULL);
/* modify existing mount entry */
@ -3227,7 +3229,7 @@ NTSTATUS nfs41_FinalizeNetRoot(
do {
nfs41_GetFirstMountEntry(pNetRootContext->mountLock,
&pNetRootContext->mounts, mount_tmp);
pNetRootContext->mounts, mount_tmp);
if (mount_tmp == NULL)
break;
#ifdef DEBUG_MOUNT
@ -3261,8 +3263,7 @@ NTSTATUS nfs41_FinalizeNetRoot(
print_error("nfs41_unmount RPCSEC_GSS_KRB5P failed with %d\n",
status);
}
nfs41_RemoveEntry(pNetRootContext->mountLock, &pNetRootContext->mounts,
mount_tmp);
nfs41_RemoveEntry(pNetRootContext->mountLock, mount_tmp);
RxFreePool(mount_tmp);
} while (1);
/* ignore any errors from unmount */
@ -3273,7 +3274,7 @@ NTSTATUS nfs41_FinalizeNetRoot(
nfs41_GetFirstEntry(upcallLock, upcall, tmp);
if (tmp != NULL) {
DbgP("Removing entry from upcall list\n");
nfs41_RemoveEntry(upcallLock, upcall, tmp);
nfs41_RemoveEntry(upcallLock, tmp);
tmp->status = STATUS_INSUFFICIENT_RESOURCES;
KeSetEvent(&tmp->cond, 0, FALSE);
} else
@ -3284,7 +3285,7 @@ NTSTATUS nfs41_FinalizeNetRoot(
nfs41_GetFirstEntry(downcallLock, downcall, tmp);
if (tmp != NULL) {
DbgP("Removing entry from downcall list\n");
nfs41_RemoveEntry(downcallLock, downcall, tmp);
nfs41_RemoveEntry(downcallLock, tmp);
tmp->status = STATUS_INSUFFICIENT_RESOURCES;
KeSetEvent(&tmp->cond, 0, FALSE);
} else
@ -3964,8 +3965,8 @@ VOID nfs41_remove_fcb_entry(
nfs41_fcb_list_entry *cur;
ExAcquireFastMutex(&fcblistLock);
pEntry = openlist->head.Flink;
while (!IsListEmpty(&openlist->head)) {
pEntry = openlist.head.Flink;
while (!IsListEmpty(&openlist.head)) {
cur = (nfs41_fcb_list_entry *)CONTAINING_RECORD(pEntry,
nfs41_fcb_list_entry, next);
if (cur->fcb == fcb) {
@ -3976,7 +3977,7 @@ VOID nfs41_remove_fcb_entry(
RxFreePool(cur);
break;
}
if (pEntry->Flink == &openlist->head) {
if (pEntry->Flink == &openlist.head) {
#ifdef DEBUG_CLOSE
DbgP("nfs41_remove_srvopen_entry: reached EOL looking for fcb "
"%p\n", fcb);
@ -4454,8 +4455,8 @@ VOID nfs41_update_fcb_list(
PLIST_ENTRY pEntry;
nfs41_fcb_list_entry *cur;
ExAcquireFastMutex(&fcblistLock);
pEntry = openlist->head.Flink;
while (!IsListEmpty(&openlist->head)) {
pEntry = openlist.head.Flink;
while (!IsListEmpty(&openlist.head)) {
cur = (nfs41_fcb_list_entry *)CONTAINING_RECORD(pEntry,
nfs41_fcb_list_entry, next);
if (cur->fcb == fcb &&
@ -4469,7 +4470,7 @@ VOID nfs41_update_fcb_list(
break;
}
/* place an upcall for this srv_open */
if (pEntry->Flink == &openlist->head) {
if (pEntry->Flink == &openlist.head) {
#if defined(DEBUG_FILE_SET) || defined(DEBUG_ACL_SET) || \
defined(DEBUG_WRITE) || defined(DEBUG_EA_SET)
DbgP("nfs41_update_fcb_list: reached EOL loooking for "
@ -5637,8 +5638,8 @@ void enable_caching(
RxChangeBufferingState((PSRV_OPEN)SrvOpen, ULongToPtr(flag), 1);
ExAcquireFastMutex(&fcblistLock);
pEntry = openlist->head.Flink;
while (!IsListEmpty(&openlist->head)) {
pEntry = openlist.head.Flink;
while (!IsListEmpty(&openlist.head)) {
cur = (nfs41_fcb_list_entry *)CONTAINING_RECORD(pEntry,
nfs41_fcb_list_entry, next);
if (cur->fcb == SrvOpen->pFcb) {
@ -5650,7 +5651,7 @@ void enable_caching(
found = TRUE;
break;
}
if (pEntry->Flink == &openlist->head) {
if (pEntry->Flink == &openlist.head) {
#ifdef DEBUG_TIME_BASED_COHERENCY
DbgP("enable_caching: reached EOL looking for fcb=%p %wZ\n",
SrvOpen->pFcb, SrvOpen->pAlreadyPrefixedName);
@ -5672,7 +5673,7 @@ void enable_caching(
oentry->nfs41_fobx = nfs41_fobx;
oentry->ChangeTime = ChangeTime;
oentry->skip = FALSE;
InsertTailList(&openlist->head, &oentry->next);
InsertTailList(&openlist.head, &oentry->next);
nfs41_fobx->deleg_type = 0;
}
ExReleaseFastMutex(&fcblistLock);
@ -6644,8 +6645,8 @@ VOID fcbopen_main(PVOID ctx)
nfs41_fcb_list_entry *cur;
status = KeDelayExecutionThread(KernelMode, TRUE, &timeout);
ExAcquireFastMutex(&fcblistLock);
pEntry = openlist->head.Flink;
while (!IsListEmpty(&openlist->head)) {
pEntry = openlist.head.Flink;
while (!IsListEmpty(&openlist.head)) {
PNFS41_NETROOT_EXTENSION pNetRootContext;
nfs41_updowncall_entry *entry;
FILE_BASIC_INFORMATION binfo;
@ -6714,7 +6715,7 @@ VOID fcbopen_main(PVOID ctx)
nfs41_fcb->changeattr = entry->u.QueryFile.ChangeTime;
RxFreePool(entry);
out:
if (pEntry->Flink == &openlist->head) {
if (pEntry->Flink == &openlist.head) {
#ifdef DEBUG_TIME_BASED_COHERENCY
DbgP("fcbopen_main: reached end of the fcb list\n");
#endif
@ -6788,35 +6789,14 @@ NTSTATUS DriverEntry(
ExInitializeFastMutex(&xidLock);
ExInitializeFastMutex(&openOwnerLock);
ExInitializeFastMutex(&fcblistLock);
upcall = RxAllocatePoolWithTag(NonPagedPool, sizeof(nfs41_updowncall_list),
NFS41_MM_POOLTAG);
if (upcall == NULL)
goto out_unregister;
InitializeListHead(&upcall->head);
downcall = RxAllocatePoolWithTag(NonPagedPool, sizeof(nfs41_updowncall_list),
NFS41_MM_POOLTAG);
if (downcall == NULL) {
RxFreePool(upcall);
goto out_unregister;
}
InitializeListHead(&downcall->head);
openlist = RxAllocatePoolWithTag(NonPagedPool, sizeof(nfs41_fcb_list),
NFS41_MM_POOLTAG);
if (openlist == NULL) {
RxFreePool(upcall);
RxFreePool(downcall);
goto out_unregister;
}
InitializeListHead(&openlist->head);
InitializeListHead(&upcall.head);
InitializeListHead(&downcall.head);
InitializeListHead(&openlist.head);
InitializeObjectAttributes(&oattrs, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);
status = PsCreateSystemThread(&dev_exts->openlistHandle, mask,
&oattrs, NULL, NULL, &fcbopen_main, NULL);
if (status != STATUS_SUCCESS) {
RxFreePool(upcall);
RxFreePool(downcall);
RxFreePool(openlist);
goto out;
}
if (status != STATUS_SUCCESS)
goto out_unregister;
drv->DriverUnload = nfs41_driver_unload;
@ -6860,12 +6840,6 @@ unload:
if (status != STATUS_SUCCESS) {
print_error("couldn't delete pipe symbolic link\n");
}
if (upcall)
RxFreePool(upcall);
if (downcall)
RxFreePool(downcall);
if (openlist)
RxFreePool(openlist);
RxUnload(drv);
DbgP("driver unloaded %p\n", drv);