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-rw-r--r--xorg-server/dix/resource.c1938
1 files changed, 965 insertions, 973 deletions
diff --git a/xorg-server/dix/resource.c b/xorg-server/dix/resource.c
index bec68753e..26d2c72aa 100644
--- a/xorg-server/dix/resource.c
+++ b/xorg-server/dix/resource.c
@@ -1,973 +1,965 @@
-/************************************************************
-
-Copyright 1987, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-********************************************************/
-/* The panoramix components contained the following notice */
-/*****************************************************************
-
-Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
-BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR OTHER LIABILITY,
-WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
-IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of Digital Equipment Corporation
-shall not be used in advertising or otherwise to promote the sale, use or other
-dealings in this Software without prior written authorization from Digital
-Equipment Corporation.
-
-******************************************************************/
-/* XSERVER_DTRACE additions:
- * Copyright (c) 2005-2006, Oracle and/or its affiliates. All rights reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-/* Routines to manage various kinds of resources:
- *
- * CreateNewResourceType, CreateNewResourceClass, InitClientResources,
- * FakeClientID, AddResource, FreeResource, FreeClientResources,
- * FreeAllResources, LookupIDByType, LookupIDByClass, GetXIDRange
- */
-
-/*
- * A resource ID is a 32 bit quantity, the upper 2 bits of which are
- * off-limits for client-visible resources. The next 8 bits are
- * used as client ID, and the low 22 bits come from the client.
- * A resource ID is "hashed" by extracting and xoring subfields
- * (varying with the size of the hash table).
- *
- * It is sometimes necessary for the server to create an ID that looks
- * like it belongs to a client. This ID, however, must not be one
- * the client actually can create, or we have the potential for conflict.
- * The 31st bit of the ID is reserved for the server's use for this
- * purpose. By setting CLIENT_ID(id) to the client, the SERVER_BIT to
- * 1, and an otherwise arbitrary ID in the low 22 bits, we can create a
- * resource "owned" by the client.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include "misc.h"
-#include "os.h"
-#include "resource.h"
-#include "dixstruct.h"
-#include "opaque.h"
-#include "windowstr.h"
-#include "dixfont.h"
-#include "colormap.h"
-#include "inputstr.h"
-#include "dixevents.h"
-#include "dixgrabs.h"
-#include "cursor.h"
-#ifdef PANORAMIX
-#include "panoramiX.h"
-#include "panoramiXsrv.h"
-#endif
-#include "xace.h"
-#include <assert.h>
-#include "registry.h"
-
-#ifdef XSERVER_DTRACE
-#include <sys/types.h>
-typedef const char *string;
-#include "Xserver-dtrace.h"
-
-#define TypeNameString(t) LookupResourceName(t)
-#endif
-
-static void RebuildTable(
- int /*client*/
-);
-
-#define SERVER_MINID 32
-
-#define INITBUCKETS 64
-#define INITHASHSIZE 6
-#define MAXHASHSIZE 11
-
-typedef struct _Resource {
- struct _Resource *next;
- XID id;
- RESTYPE type;
- pointer value;
-} ResourceRec, *ResourcePtr;
-#define NullResource ((ResourcePtr)NULL)
-
-typedef struct _ClientResource {
- ResourcePtr *resources;
- int elements;
- int buckets;
- int hashsize; /* log(2)(buckets) */
- XID fakeID;
- XID endFakeID;
- XID expectID;
-} ClientResourceRec;
-
-RESTYPE lastResourceType;
-static RESTYPE lastResourceClass;
-RESTYPE TypeMask;
-
-struct ResourceType {
- DeleteType deleteFunc;
- int errorValue;
-};
-
-static struct ResourceType *resourceTypes;
-static const struct ResourceType predefTypes[] = {
- [RT_NONE & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = (DeleteType)NoopDDA,
- .errorValue = BadValue,
- },
- [RT_WINDOW & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = DeleteWindow,
- .errorValue = BadWindow,
- },
- [RT_PIXMAP & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = dixDestroyPixmap,
- .errorValue = BadPixmap,
- },
- [RT_GC & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = FreeGC,
- .errorValue = BadGC,
- },
- [RT_FONT & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = CloseFont,
- .errorValue = BadFont,
- },
- [RT_CURSOR & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = FreeCursor,
- .errorValue = BadCursor,
- },
- [RT_COLORMAP & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = FreeColormap,
- .errorValue = BadColor,
- },
- [RT_CMAPENTRY & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = FreeClientPixels,
- .errorValue = BadColor,
- },
- [RT_OTHERCLIENT & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = OtherClientGone,
- .errorValue = BadValue,
- },
- [RT_PASSIVEGRAB & (RC_LASTPREDEF - 1)] = {
- .deleteFunc = DeletePassiveGrab,
- .errorValue = BadValue,
- },
-};
-
-CallbackListPtr ResourceStateCallback;
-
-static _X_INLINE void
-CallResourceStateCallback(ResourceState state, ResourceRec *res)
-{
- if (ResourceStateCallback) {
- ResourceStateInfoRec rsi = { state, res->id, res->type, res->value };
- CallCallbacks(&ResourceStateCallback, &rsi);
- }
-}
-
-RESTYPE
-CreateNewResourceType(DeleteType deleteFunc, char *name)
-{
- RESTYPE next = lastResourceType + 1;
- struct ResourceType *types;
-
- if (next & lastResourceClass)
- return 0;
- types = realloc(resourceTypes, (next + 1) * sizeof(*resourceTypes));
- if (!types)
- return 0;
-
- lastResourceType = next;
- resourceTypes = types;
- resourceTypes[next].deleteFunc = deleteFunc;
- resourceTypes[next].errorValue = BadValue;
-
- /* Called even if name is NULL, to remove any previous entry */
- RegisterResourceName(next, name);
-
- return next;
-}
-
-void
-SetResourceTypeErrorValue(RESTYPE type, int errorValue)
-{
- resourceTypes[type & TypeMask].errorValue = errorValue;
-}
-
-RESTYPE
-CreateNewResourceClass(void)
-{
- RESTYPE next = lastResourceClass >> 1;
-
- if (next & lastResourceType)
- return 0;
- lastResourceClass = next;
- TypeMask = next - 1;
- return next;
-}
-
-static ClientResourceRec clientTable[MAXCLIENTS];
-
-/*****************
- * InitClientResources
- * When a new client is created, call this to allocate space
- * in resource table
- *****************/
-
-Bool
-InitClientResources(ClientPtr client)
-{
- int i, j;
-
- if (client == serverClient)
- {
- lastResourceType = RT_LASTPREDEF;
- lastResourceClass = RC_LASTPREDEF;
- TypeMask = RC_LASTPREDEF - 1;
- free(resourceTypes);
- resourceTypes = malloc(sizeof(predefTypes));
- if (!resourceTypes)
- return FALSE;
- memcpy(resourceTypes, predefTypes, sizeof(predefTypes));
- }
- clientTable[i = client->index].resources =
- malloc(INITBUCKETS*sizeof(ResourcePtr));
- if (!clientTable[i].resources)
- return FALSE;
- clientTable[i].buckets = INITBUCKETS;
- clientTable[i].elements = 0;
- clientTable[i].hashsize = INITHASHSIZE;
- /* Many IDs allocated from the server client are visible to clients,
- * so we don't use the SERVER_BIT for them, but we have to start
- * past the magic value constants used in the protocol. For normal
- * clients, we can start from zero, with SERVER_BIT set.
- */
- clientTable[i].fakeID = client->clientAsMask |
- (client->index ? SERVER_BIT : SERVER_MINID);
- clientTable[i].endFakeID = (clientTable[i].fakeID | RESOURCE_ID_MASK) + 1;
- clientTable[i].expectID = client->clientAsMask;
- for (j=0; j<INITBUCKETS; j++)
- {
- clientTable[i].resources[j] = NullResource;
- }
- return TRUE;
-}
-
-
-static int
-Hash(int client, XID id)
-{
- id &= RESOURCE_ID_MASK;
- switch (clientTable[client].hashsize)
- {
- case 6:
- return ((int)(0x03F & (id ^ (id>>6) ^ (id>>12))));
- case 7:
- return ((int)(0x07F & (id ^ (id>>7) ^ (id>>13))));
- case 8:
- return ((int)(0x0FF & (id ^ (id>>8) ^ (id>>16))));
- case 9:
- return ((int)(0x1FF & (id ^ (id>>9))));
- case 10:
- return ((int)(0x3FF & (id ^ (id>>10))));
- case 11:
- return ((int)(0x7FF & (id ^ (id>>11))));
- }
- return -1;
-}
-
-static XID
-AvailableID(
- int client,
- XID id,
- XID maxid,
- XID goodid)
-{
- ResourcePtr res;
-
- if ((goodid >= id) && (goodid <= maxid))
- return goodid;
- for (; id <= maxid; id++)
- {
- res = clientTable[client].resources[Hash(client, id)];
- while (res && (res->id != id))
- res = res->next;
- if (!res)
- return id;
- }
- return 0;
-}
-
-void
-GetXIDRange(int client, Bool server, XID *minp, XID *maxp)
-{
- XID id, maxid;
- ResourcePtr *resp;
- ResourcePtr res;
- int i;
- XID goodid;
-
- id = (Mask)client << CLIENTOFFSET;
- if (server)
- id |= client ? SERVER_BIT : SERVER_MINID;
- maxid = id | RESOURCE_ID_MASK;
- goodid = 0;
- for (resp = clientTable[client].resources, i = clientTable[client].buckets;
- --i >= 0;)
- {
- for (res = *resp++; res; res = res->next)
- {
- if ((res->id < id) || (res->id > maxid))
- continue;
- if (((res->id - id) >= (maxid - res->id)) ?
- (goodid = AvailableID(client, id, res->id - 1, goodid)) :
- !(goodid = AvailableID(client, res->id + 1, maxid, goodid)))
- maxid = res->id - 1;
- else
- id = res->id + 1;
- }
- }
- if (id > maxid)
- id = maxid = 0;
- *minp = id;
- *maxp = maxid;
-}
-
-/**
- * GetXIDList is called by the XC-MISC extension's MiscGetXIDList function.
- * This function tries to find count unused XIDs for the given client. It
- * puts the IDs in the array pids and returns the number found, which should
- * almost always be the number requested.
- *
- * The circumstances that lead to a call to this function are very rare.
- * Xlib must run out of IDs while trying to generate a request that wants
- * multiple ID's, like the Multi-buffering CreateImageBuffers request.
- *
- * No rocket science in the implementation; just iterate over all
- * possible IDs for the given client and pick the first count IDs
- * that aren't in use. A more efficient algorithm could probably be
- * invented, but this will be used so rarely that this should suffice.
- */
-
-unsigned int
-GetXIDList(ClientPtr pClient, unsigned count, XID *pids)
-{
- unsigned int found = 0;
- XID rc, id = pClient->clientAsMask;
- XID maxid;
- pointer val;
-
- maxid = id | RESOURCE_ID_MASK;
- while ( (found < count) && (id <= maxid) )
- {
- rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,
- DixGetAttrAccess);
- if (rc == BadValue)
- {
- pids[found++] = id;
- }
- id++;
- }
- return found;
-}
-
-/*
- * Return the next usable fake client ID.
- *
- * Normally this is just the next one in line, but if we've used the last
- * in the range, we need to find a new range of safe IDs to avoid
- * over-running another client.
- */
-
-XID
-FakeClientID(int client)
-{
- XID id, maxid;
-
- id = clientTable[client].fakeID++;
- if (id != clientTable[client].endFakeID)
- return id;
- GetXIDRange(client, TRUE, &id, &maxid);
- if (!id) {
- if (!client)
- FatalError("FakeClientID: server internal ids exhausted\n");
- MarkClientException(clients[client]);
- id = ((Mask)client << CLIENTOFFSET) | (SERVER_BIT * 3);
- maxid = id | RESOURCE_ID_MASK;
- }
- clientTable[client].fakeID = id + 1;
- clientTable[client].endFakeID = maxid + 1;
- return id;
-}
-
-Bool
-AddResource(XID id, RESTYPE type, pointer value)
-{
- int client;
- ClientResourceRec *rrec;
- ResourcePtr res, *head;
-
-#ifdef XSERVER_DTRACE
- XSERVER_RESOURCE_ALLOC(id, type, value, TypeNameString(type));
-#endif
- client = CLIENT_ID(id);
- rrec = &clientTable[client];
- if (!rrec->buckets)
- {
- ErrorF("[dix] AddResource(%lx, %lx, %lx), client=%d \n",
- (unsigned long)id, type, (unsigned long)value, client);
- FatalError("client not in use\n");
- }
- if ((rrec->elements >= 4*rrec->buckets) &&
- (rrec->hashsize < MAXHASHSIZE))
- RebuildTable(client);
- head = &rrec->resources[Hash(client, id)];
- res = malloc(sizeof(ResourceRec));
- if (!res)
- {
- (*resourceTypes[type & TypeMask].deleteFunc)(value, id);
- return FALSE;
- }
- res->next = *head;
- res->id = id;
- res->type = type;
- res->value = value;
- *head = res;
- rrec->elements++;
- if (!(id & SERVER_BIT) && (id >= rrec->expectID))
- rrec->expectID = id + 1;
- CallResourceStateCallback(ResourceStateAdding, res);
- return TRUE;
-}
-
-static void
-RebuildTable(int client)
-{
- int j;
- ResourcePtr res, next;
- ResourcePtr **tails, *resources;
- ResourcePtr **tptr, *rptr;
-
- /*
- * For now, preserve insertion order, since some ddx layers depend
- * on resources being free in the opposite order they are added.
- */
-
- j = 2 * clientTable[client].buckets;
- tails = malloc(j * sizeof(ResourcePtr *));
- if (!tails)
- return;
- resources = malloc(j * sizeof(ResourcePtr));
- if (!resources)
- {
- free(tails);
- return;
- }
- for (rptr = resources, tptr = tails; --j >= 0; rptr++, tptr++)
- {
- *rptr = NullResource;
- *tptr = rptr;
- }
- clientTable[client].hashsize++;
- for (j = clientTable[client].buckets,
- rptr = clientTable[client].resources;
- --j >= 0;
- rptr++)
- {
- for (res = *rptr; res; res = next)
- {
- next = res->next;
- res->next = NullResource;
- tptr = &tails[Hash(client, res->id)];
- **tptr = res;
- *tptr = &res->next;
- }
- }
- free(tails);
- clientTable[client].buckets *= 2;
- free(clientTable[client].resources);
- clientTable[client].resources = resources;
-}
-
-void
-FreeResource(XID id, RESTYPE skipDeleteFuncType)
-{
- int cid;
- ResourcePtr res;
- ResourcePtr *prev, *head;
- int *eltptr;
- int elements;
-
- if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
- {
- head = &clientTable[cid].resources[Hash(cid, id)];
- eltptr = &clientTable[cid].elements;
-
- prev = head;
- while ( (res = *prev) )
- {
- if (res->id == id)
- {
- RESTYPE rtype = res->type;
-
-#ifdef XSERVER_DTRACE
- XSERVER_RESOURCE_FREE(res->id, res->type,
- res->value, TypeNameString(res->type));
-#endif
- *prev = res->next;
- elements = --*eltptr;
-
- CallResourceStateCallback(ResourceStateFreeing, res);
-
- if (rtype != skipDeleteFuncType)
- (*resourceTypes[rtype & TypeMask].deleteFunc)(res->value, res->id);
- free(res);
- if (*eltptr != elements)
- prev = head; /* prev may no longer be valid */
- }
- else
- prev = &res->next;
- }
- }
-}
-
-
-void
-FreeResourceByType(XID id, RESTYPE type, Bool skipFree)
-{
- int cid;
- ResourcePtr res;
- ResourcePtr *prev, *head;
- if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
- {
- head = &clientTable[cid].resources[Hash(cid, id)];
-
- prev = head;
- while ( (res = *prev) )
- {
- if (res->id == id && res->type == type)
- {
-#ifdef XSERVER_DTRACE
- XSERVER_RESOURCE_FREE(res->id, res->type,
- res->value, TypeNameString(res->type));
-#endif
- *prev = res->next;
- clientTable[cid].elements--;
-
- CallResourceStateCallback(ResourceStateFreeing, res);
-
- if (!skipFree)
- (*resourceTypes[type & TypeMask].deleteFunc)(res->value, res->id);
- free(res);
- break;
- }
- else
- prev = &res->next;
- }
- }
-}
-
-/*
- * Change the value associated with a resource id. Caller
- * is responsible for "doing the right thing" with the old
- * data
- */
-
-Bool
-ChangeResourceValue (XID id, RESTYPE rtype, pointer value)
-{
- int cid;
- ResourcePtr res;
-
- if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
- {
- res = clientTable[cid].resources[Hash(cid, id)];
-
- for (; res; res = res->next)
- if ((res->id == id) && (res->type == rtype))
- {
- res->value = value;
- return TRUE;
- }
- }
- return FALSE;
-}
-
-/* Note: if func adds or deletes resources, then func can get called
- * more than once for some resources. If func adds new resources,
- * func might or might not get called for them. func cannot both
- * add and delete an equal number of resources!
- */
-
-void
-FindClientResourcesByType(
- ClientPtr client,
- RESTYPE type,
- FindResType func,
- pointer cdata
-){
- ResourcePtr *resources;
- ResourcePtr this, next;
- int i, elements;
- int *eltptr;
-
- if (!client)
- client = serverClient;
-
- resources = clientTable[client->index].resources;
- eltptr = &clientTable[client->index].elements;
- for (i = 0; i < clientTable[client->index].buckets; i++)
- {
- for (this = resources[i]; this; this = next)
- {
- next = this->next;
- if (!type || this->type == type) {
- elements = *eltptr;
- (*func)(this->value, this->id, cdata);
- if (*eltptr != elements)
- next = resources[i]; /* start over */
- }
- }
- }
-}
-
-void
-FindAllClientResources(
- ClientPtr client,
- FindAllRes func,
- pointer cdata
-){
- ResourcePtr *resources;
- ResourcePtr this, next;
- int i, elements;
- int *eltptr;
-
- if (!client)
- client = serverClient;
-
- resources = clientTable[client->index].resources;
- eltptr = &clientTable[client->index].elements;
- for (i = 0; i < clientTable[client->index].buckets; i++)
- {
- for (this = resources[i]; this; this = next)
- {
- next = this->next;
- elements = *eltptr;
- (*func)(this->value, this->id, this->type, cdata);
- if (*eltptr != elements)
- next = resources[i]; /* start over */
- }
- }
-}
-
-
-pointer
-LookupClientResourceComplex(
- ClientPtr client,
- RESTYPE type,
- FindComplexResType func,
- pointer cdata
-){
- ResourcePtr *resources;
- ResourcePtr this, next;
- pointer value;
- int i;
-
- if (!client)
- client = serverClient;
-
- resources = clientTable[client->index].resources;
- for (i = 0; i < clientTable[client->index].buckets; i++) {
- for (this = resources[i]; this; this = next) {
- next = this->next;
- if (!type || this->type == type) {
- /* workaround func freeing the type as DRI1 does */
- value = this->value;
- if((*func)(value, this->id, cdata))
- return value;
- }
- }
- }
- return NULL;
-}
-
-
-void
-FreeClientNeverRetainResources(ClientPtr client)
-{
- ResourcePtr *resources;
- ResourcePtr this;
- ResourcePtr *prev;
- int j, elements;
- int *eltptr;
-
- if (!client)
- return;
-
- resources = clientTable[client->index].resources;
- eltptr = &clientTable[client->index].elements;
- for (j=0; j < clientTable[client->index].buckets; j++)
- {
- prev = &resources[j];
- while ( (this = *prev) )
- {
- RESTYPE rtype = this->type;
- if (rtype & RC_NEVERRETAIN)
- {
-#ifdef XSERVER_DTRACE
- XSERVER_RESOURCE_FREE(this->id, this->type,
- this->value, TypeNameString(this->type));
-#endif
- *prev = this->next;
- clientTable[client->index].elements--;
-
- CallResourceStateCallback(ResourceStateFreeing, this);
-
- elements = *eltptr;
- (*resourceTypes[rtype & TypeMask].deleteFunc)(this->value, this->id);
- free(this);
- if (*eltptr != elements)
- prev = &resources[j]; /* prev may no longer be valid */
- }
- else
- prev = &this->next;
- }
- }
-}
-
-void
-FreeClientResources(ClientPtr client)
-{
- ResourcePtr *resources;
- ResourcePtr this;
- int j;
-
- /* This routine shouldn't be called with a null client, but just in
- case ... */
-
- if (!client)
- return;
-
- HandleSaveSet(client);
-
- resources = clientTable[client->index].resources;
- for (j=0; j < clientTable[client->index].buckets; j++)
- {
- /* It may seem silly to update the head of this resource list as
- we delete the members, since the entire list will be deleted any way,
- but there are some resource deletion functions "FreeClientPixels" for
- one which do a LookupID on another resource id (a Colormap id in this
- case), so the resource list must be kept valid up to the point that
- it is deleted, so every time we delete a resource, we must update the
- head, just like in FreeResource. I hope that this doesn't slow down
- mass deletion appreciably. PRH */
-
- ResourcePtr *head;
-
- head = &resources[j];
-
- for (this = *head; this; this = *head)
- {
- RESTYPE rtype = this->type;
-#ifdef XSERVER_DTRACE
- XSERVER_RESOURCE_FREE(this->id, this->type,
- this->value, TypeNameString(this->type));
-#endif
- *head = this->next;
- clientTable[client->index].elements--;
-
- CallResourceStateCallback(ResourceStateFreeing, this);
-
- (*resourceTypes[rtype & TypeMask].deleteFunc)(this->value, this->id);
- free(this);
- }
- }
- free(clientTable[client->index].resources);
- clientTable[client->index].resources = NULL;
- clientTable[client->index].buckets = 0;
-}
-
-void
-FreeAllResources(void)
-{
- int i;
-
- for (i = currentMaxClients; --i >= 0; )
- {
- if (clientTable[i].buckets)
- FreeClientResources(clients[i]);
- }
-}
-
-Bool
-LegalNewID(XID id, ClientPtr client)
-{
- pointer val;
- int rc;
-
-#ifdef PANORAMIX
- XID minid, maxid;
-
- if (!noPanoramiXExtension) {
- minid = client->clientAsMask | (client->index ?
- SERVER_BIT : SERVER_MINID);
- maxid = (clientTable[client->index].fakeID | RESOURCE_ID_MASK) + 1;
- if ((id >= minid) && (id <= maxid))
- return TRUE;
- }
-#endif /* PANORAMIX */
- if (client->clientAsMask == (id & ~RESOURCE_ID_MASK))
- {
- if (clientTable[client->index].expectID <= id)
- return TRUE;
-
- rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,
- DixGetAttrAccess);
- return rc == BadValue;
- }
- return FALSE;
-}
-
-int
-dixLookupResourceByType(pointer *result, XID id, RESTYPE rtype,
- ClientPtr client, Mask mode)
-{
- int cid = CLIENT_ID(id);
- ResourcePtr res = NULL;
-
- *result = NULL;
- if ((rtype & TypeMask) > lastResourceType)
- return BadImplementation;
-
- if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {
- res = clientTable[cid].resources[Hash(cid, id)];
-
- for (; res; res = res->next)
- if (res->id == id && res->type == rtype)
- break;
- }
- if (!res)
- return resourceTypes[rtype & TypeMask].errorValue;
-
- if (client) {
- client->errorValue = id;
- cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,
- res->value, RT_NONE, NULL, mode);
- if (cid == BadValue)
- return resourceTypes[rtype & TypeMask].errorValue;
- if (cid != Success)
- return cid;
- }
-
- *result = res->value;
- return Success;
-}
-
-int
-dixLookupResourceByClass(pointer *result, XID id, RESTYPE rclass,
- ClientPtr client, Mask mode)
-{
- int cid = CLIENT_ID(id);
- ResourcePtr res = NULL;
-
- *result = NULL;
-
- if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {
- res = clientTable[cid].resources[Hash(cid, id)];
-
- for (; res; res = res->next)
- if (res->id == id && (res->type & rclass))
- break;
- }
- if (!res)
- return BadValue;
-
- if (client) {
- client->errorValue = id;
- cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,
- res->value, RT_NONE, NULL, mode);
- if (cid != Success)
- return cid;
- }
-
- *result = res->value;
- return Success;
-}
+/************************************************************
+
+Copyright 1987, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+********************************************************/
+/* The panoramix components contained the following notice */
+/*****************************************************************
+
+Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
+BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of Digital Equipment Corporation
+shall not be used in advertising or otherwise to promote the sale, use or other
+dealings in this Software without prior written authorization from Digital
+Equipment Corporation.
+
+******************************************************************/
+/* XSERVER_DTRACE additions:
+ * Copyright (c) 2005-2006, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/* Routines to manage various kinds of resources:
+ *
+ * CreateNewResourceType, CreateNewResourceClass, InitClientResources,
+ * FakeClientID, AddResource, FreeResource, FreeClientResources,
+ * FreeAllResources, LookupIDByType, LookupIDByClass, GetXIDRange
+ */
+
+/*
+ * A resource ID is a 32 bit quantity, the upper 2 bits of which are
+ * off-limits for client-visible resources. The next 8 bits are
+ * used as client ID, and the low 22 bits come from the client.
+ * A resource ID is "hashed" by extracting and xoring subfields
+ * (varying with the size of the hash table).
+ *
+ * It is sometimes necessary for the server to create an ID that looks
+ * like it belongs to a client. This ID, however, must not be one
+ * the client actually can create, or we have the potential for conflict.
+ * The 31st bit of the ID is reserved for the server's use for this
+ * purpose. By setting CLIENT_ID(id) to the client, the SERVER_BIT to
+ * 1, and an otherwise arbitrary ID in the low 22 bits, we can create a
+ * resource "owned" by the client.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include "misc.h"
+#include "os.h"
+#include "resource.h"
+#include "dixstruct.h"
+#include "opaque.h"
+#include "windowstr.h"
+#include "dixfont.h"
+#include "colormap.h"
+#include "inputstr.h"
+#include "dixevents.h"
+#include "dixgrabs.h"
+#include "cursor.h"
+#ifdef PANORAMIX
+#include "panoramiX.h"
+#include "panoramiXsrv.h"
+#endif
+#include "xace.h"
+#include <assert.h>
+#include "registry.h"
+
+#ifdef XSERVER_DTRACE
+#include <sys/types.h>
+typedef const char *string;
+#include "Xserver-dtrace.h"
+
+#define TypeNameString(t) LookupResourceName(t)
+#endif
+
+static void RebuildTable(
+ int /*client*/
+);
+
+#define SERVER_MINID 32
+
+#define INITBUCKETS 64
+#define INITHASHSIZE 6
+#define MAXHASHSIZE 11
+
+typedef struct _Resource {
+ struct _Resource *next;
+ XID id;
+ RESTYPE type;
+ pointer value;
+} ResourceRec, *ResourcePtr;
+
+typedef struct _ClientResource {
+ ResourcePtr *resources;
+ int elements;
+ int buckets;
+ int hashsize; /* log(2)(buckets) */
+ XID fakeID;
+ XID endFakeID;
+} ClientResourceRec;
+
+RESTYPE lastResourceType;
+static RESTYPE lastResourceClass;
+RESTYPE TypeMask;
+
+struct ResourceType {
+ DeleteType deleteFunc;
+ int errorValue;
+};
+
+static struct ResourceType *resourceTypes;
+static const struct ResourceType predefTypes[] = {
+ [RT_NONE & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = (DeleteType)NoopDDA,
+ .errorValue = BadValue,
+ },
+ [RT_WINDOW & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = DeleteWindow,
+ .errorValue = BadWindow,
+ },
+ [RT_PIXMAP & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = dixDestroyPixmap,
+ .errorValue = BadPixmap,
+ },
+ [RT_GC & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = FreeGC,
+ .errorValue = BadGC,
+ },
+ [RT_FONT & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = CloseFont,
+ .errorValue = BadFont,
+ },
+ [RT_CURSOR & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = FreeCursor,
+ .errorValue = BadCursor,
+ },
+ [RT_COLORMAP & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = FreeColormap,
+ .errorValue = BadColor,
+ },
+ [RT_CMAPENTRY & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = FreeClientPixels,
+ .errorValue = BadColor,
+ },
+ [RT_OTHERCLIENT & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = OtherClientGone,
+ .errorValue = BadValue,
+ },
+ [RT_PASSIVEGRAB & (RC_LASTPREDEF - 1)] = {
+ .deleteFunc = DeletePassiveGrab,
+ .errorValue = BadValue,
+ },
+};
+
+CallbackListPtr ResourceStateCallback;
+
+static _X_INLINE void
+CallResourceStateCallback(ResourceState state, ResourceRec *res)
+{
+ if (ResourceStateCallback) {
+ ResourceStateInfoRec rsi = { state, res->id, res->type, res->value };
+ CallCallbacks(&ResourceStateCallback, &rsi);
+ }
+}
+
+RESTYPE
+CreateNewResourceType(DeleteType deleteFunc, char *name)
+{
+ RESTYPE next = lastResourceType + 1;
+ struct ResourceType *types;
+
+ if (next & lastResourceClass)
+ return 0;
+ types = realloc(resourceTypes, (next + 1) * sizeof(*resourceTypes));
+ if (!types)
+ return 0;
+
+ lastResourceType = next;
+ resourceTypes = types;
+ resourceTypes[next].deleteFunc = deleteFunc;
+ resourceTypes[next].errorValue = BadValue;
+
+ /* Called even if name is NULL, to remove any previous entry */
+ RegisterResourceName(next, name);
+
+ return next;
+}
+
+void
+SetResourceTypeErrorValue(RESTYPE type, int errorValue)
+{
+ resourceTypes[type & TypeMask].errorValue = errorValue;
+}
+
+RESTYPE
+CreateNewResourceClass(void)
+{
+ RESTYPE next = lastResourceClass >> 1;
+
+ if (next & lastResourceType)
+ return 0;
+ lastResourceClass = next;
+ TypeMask = next - 1;
+ return next;
+}
+
+static ClientResourceRec clientTable[MAXCLIENTS];
+
+/*****************
+ * InitClientResources
+ * When a new client is created, call this to allocate space
+ * in resource table
+ *****************/
+
+Bool
+InitClientResources(ClientPtr client)
+{
+ int i, j;
+
+ if (client == serverClient)
+ {
+ lastResourceType = RT_LASTPREDEF;
+ lastResourceClass = RC_LASTPREDEF;
+ TypeMask = RC_LASTPREDEF - 1;
+ free(resourceTypes);
+ resourceTypes = malloc(sizeof(predefTypes));
+ if (!resourceTypes)
+ return FALSE;
+ memcpy(resourceTypes, predefTypes, sizeof(predefTypes));
+ }
+ clientTable[i = client->index].resources =
+ malloc(INITBUCKETS*sizeof(ResourcePtr));
+ if (!clientTable[i].resources)
+ return FALSE;
+ clientTable[i].buckets = INITBUCKETS;
+ clientTable[i].elements = 0;
+ clientTable[i].hashsize = INITHASHSIZE;
+ /* Many IDs allocated from the server client are visible to clients,
+ * so we don't use the SERVER_BIT for them, but we have to start
+ * past the magic value constants used in the protocol. For normal
+ * clients, we can start from zero, with SERVER_BIT set.
+ */
+ clientTable[i].fakeID = client->clientAsMask |
+ (client->index ? SERVER_BIT : SERVER_MINID);
+ clientTable[i].endFakeID = (clientTable[i].fakeID | RESOURCE_ID_MASK) + 1;
+ for (j=0; j<INITBUCKETS; j++)
+ {
+ clientTable[i].resources[j] = NULL;
+ }
+ return TRUE;
+}
+
+
+static int
+Hash(int client, XID id)
+{
+ id &= RESOURCE_ID_MASK;
+ switch (clientTable[client].hashsize)
+ {
+ case 6:
+ return ((int)(0x03F & (id ^ (id>>6) ^ (id>>12))));
+ case 7:
+ return ((int)(0x07F & (id ^ (id>>7) ^ (id>>13))));
+ case 8:
+ return ((int)(0x0FF & (id ^ (id>>8) ^ (id>>16))));
+ case 9:
+ return ((int)(0x1FF & (id ^ (id>>9))));
+ case 10:
+ return ((int)(0x3FF & (id ^ (id>>10))));
+ case 11:
+ return ((int)(0x7FF & (id ^ (id>>11))));
+ }
+ return -1;
+}
+
+static XID
+AvailableID(
+ int client,
+ XID id,
+ XID maxid,
+ XID goodid)
+{
+ ResourcePtr res;
+
+ if ((goodid >= id) && (goodid <= maxid))
+ return goodid;
+ for (; id <= maxid; id++)
+ {
+ res = clientTable[client].resources[Hash(client, id)];
+ while (res && (res->id != id))
+ res = res->next;
+ if (!res)
+ return id;
+ }
+ return 0;
+}
+
+void
+GetXIDRange(int client, Bool server, XID *minp, XID *maxp)
+{
+ XID id, maxid;
+ ResourcePtr *resp;
+ ResourcePtr res;
+ int i;
+ XID goodid;
+
+ id = (Mask)client << CLIENTOFFSET;
+ if (server)
+ id |= client ? SERVER_BIT : SERVER_MINID;
+ maxid = id | RESOURCE_ID_MASK;
+ goodid = 0;
+ for (resp = clientTable[client].resources, i = clientTable[client].buckets;
+ --i >= 0;)
+ {
+ for (res = *resp++; res; res = res->next)
+ {
+ if ((res->id < id) || (res->id > maxid))
+ continue;
+ if (((res->id - id) >= (maxid - res->id)) ?
+ (goodid = AvailableID(client, id, res->id - 1, goodid)) :
+ !(goodid = AvailableID(client, res->id + 1, maxid, goodid)))
+ maxid = res->id - 1;
+ else
+ id = res->id + 1;
+ }
+ }
+ if (id > maxid)
+ id = maxid = 0;
+ *minp = id;
+ *maxp = maxid;
+}
+
+/**
+ * GetXIDList is called by the XC-MISC extension's MiscGetXIDList function.
+ * This function tries to find count unused XIDs for the given client. It
+ * puts the IDs in the array pids and returns the number found, which should
+ * almost always be the number requested.
+ *
+ * The circumstances that lead to a call to this function are very rare.
+ * Xlib must run out of IDs while trying to generate a request that wants
+ * multiple ID's, like the Multi-buffering CreateImageBuffers request.
+ *
+ * No rocket science in the implementation; just iterate over all
+ * possible IDs for the given client and pick the first count IDs
+ * that aren't in use. A more efficient algorithm could probably be
+ * invented, but this will be used so rarely that this should suffice.
+ */
+
+unsigned int
+GetXIDList(ClientPtr pClient, unsigned count, XID *pids)
+{
+ unsigned int found = 0;
+ XID rc, id = pClient->clientAsMask;
+ XID maxid;
+ pointer val;
+
+ maxid = id | RESOURCE_ID_MASK;
+ while ( (found < count) && (id <= maxid) )
+ {
+ rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,
+ DixGetAttrAccess);
+ if (rc == BadValue)
+ {
+ pids[found++] = id;
+ }
+ id++;
+ }
+ return found;
+}
+
+/*
+ * Return the next usable fake client ID.
+ *
+ * Normally this is just the next one in line, but if we've used the last
+ * in the range, we need to find a new range of safe IDs to avoid
+ * over-running another client.
+ */
+
+XID
+FakeClientID(int client)
+{
+ XID id, maxid;
+
+ id = clientTable[client].fakeID++;
+ if (id != clientTable[client].endFakeID)
+ return id;
+ GetXIDRange(client, TRUE, &id, &maxid);
+ if (!id) {
+ if (!client)
+ FatalError("FakeClientID: server internal ids exhausted\n");
+ MarkClientException(clients[client]);
+ id = ((Mask)client << CLIENTOFFSET) | (SERVER_BIT * 3);
+ maxid = id | RESOURCE_ID_MASK;
+ }
+ clientTable[client].fakeID = id + 1;
+ clientTable[client].endFakeID = maxid + 1;
+ return id;
+}
+
+Bool
+AddResource(XID id, RESTYPE type, pointer value)
+{
+ int client;
+ ClientResourceRec *rrec;
+ ResourcePtr res, *head;
+
+#ifdef XSERVER_DTRACE
+ XSERVER_RESOURCE_ALLOC(id, type, value, TypeNameString(type));
+#endif
+ client = CLIENT_ID(id);
+ rrec = &clientTable[client];
+ if (!rrec->buckets)
+ {
+ ErrorF("[dix] AddResource(%lx, %lx, %lx), client=%d \n",
+ (unsigned long)id, type, (unsigned long)value, client);
+ FatalError("client not in use\n");
+ }
+ if ((rrec->elements >= 4*rrec->buckets) &&
+ (rrec->hashsize < MAXHASHSIZE))
+ RebuildTable(client);
+ head = &rrec->resources[Hash(client, id)];
+ res = malloc(sizeof(ResourceRec));
+ if (!res)
+ {
+ (*resourceTypes[type & TypeMask].deleteFunc)(value, id);
+ return FALSE;
+ }
+ res->next = *head;
+ res->id = id;
+ res->type = type;
+ res->value = value;
+ *head = res;
+ rrec->elements++;
+ CallResourceStateCallback(ResourceStateAdding, res);
+ return TRUE;
+}
+
+static void
+RebuildTable(int client)
+{
+ int j;
+ ResourcePtr res, next;
+ ResourcePtr **tails, *resources;
+ ResourcePtr **tptr, *rptr;
+
+ /*
+ * For now, preserve insertion order, since some ddx layers depend
+ * on resources being free in the opposite order they are added.
+ */
+
+ j = 2 * clientTable[client].buckets;
+ tails = malloc(j * sizeof(ResourcePtr *));
+ if (!tails)
+ return;
+ resources = malloc(j * sizeof(ResourcePtr));
+ if (!resources)
+ {
+ free(tails);
+ return;
+ }
+ for (rptr = resources, tptr = tails; --j >= 0; rptr++, tptr++)
+ {
+ *rptr = NULL;
+ *tptr = rptr;
+ }
+ clientTable[client].hashsize++;
+ for (j = clientTable[client].buckets,
+ rptr = clientTable[client].resources;
+ --j >= 0;
+ rptr++)
+ {
+ for (res = *rptr; res; res = next)
+ {
+ next = res->next;
+ res->next = NULL;
+ tptr = &tails[Hash(client, res->id)];
+ **tptr = res;
+ *tptr = &res->next;
+ }
+ }
+ free(tails);
+ clientTable[client].buckets *= 2;
+ free(clientTable[client].resources);
+ clientTable[client].resources = resources;
+}
+
+void
+FreeResource(XID id, RESTYPE skipDeleteFuncType)
+{
+ int cid;
+ ResourcePtr res;
+ ResourcePtr *prev, *head;
+ int *eltptr;
+ int elements;
+
+ if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
+ {
+ head = &clientTable[cid].resources[Hash(cid, id)];
+ eltptr = &clientTable[cid].elements;
+
+ prev = head;
+ while ( (res = *prev) )
+ {
+ if (res->id == id)
+ {
+ RESTYPE rtype = res->type;
+
+#ifdef XSERVER_DTRACE
+ XSERVER_RESOURCE_FREE(res->id, res->type,
+ res->value, TypeNameString(res->type));
+#endif
+ *prev = res->next;
+ elements = --*eltptr;
+
+ CallResourceStateCallback(ResourceStateFreeing, res);
+
+ if (rtype != skipDeleteFuncType)
+ (*resourceTypes[rtype & TypeMask].deleteFunc)(res->value, res->id);
+ free(res);
+ if (*eltptr != elements)
+ prev = head; /* prev may no longer be valid */
+ }
+ else
+ prev = &res->next;
+ }
+ }
+}
+
+
+void
+FreeResourceByType(XID id, RESTYPE type, Bool skipFree)
+{
+ int cid;
+ ResourcePtr res;
+ ResourcePtr *prev, *head;
+ if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
+ {
+ head = &clientTable[cid].resources[Hash(cid, id)];
+
+ prev = head;
+ while ( (res = *prev) )
+ {
+ if (res->id == id && res->type == type)
+ {
+#ifdef XSERVER_DTRACE
+ XSERVER_RESOURCE_FREE(res->id, res->type,
+ res->value, TypeNameString(res->type));
+#endif
+ *prev = res->next;
+ clientTable[cid].elements--;
+
+ CallResourceStateCallback(ResourceStateFreeing, res);
+
+ if (!skipFree)
+ (*resourceTypes[type & TypeMask].deleteFunc)(res->value, res->id);
+ free(res);
+ break;
+ }
+ else
+ prev = &res->next;
+ }
+ }
+}
+
+/*
+ * Change the value associated with a resource id. Caller
+ * is responsible for "doing the right thing" with the old
+ * data
+ */
+
+Bool
+ChangeResourceValue (XID id, RESTYPE rtype, pointer value)
+{
+ int cid;
+ ResourcePtr res;
+
+ if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
+ {
+ res = clientTable[cid].resources[Hash(cid, id)];
+
+ for (; res; res = res->next)
+ if ((res->id == id) && (res->type == rtype))
+ {
+ res->value = value;
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+/* Note: if func adds or deletes resources, then func can get called
+ * more than once for some resources. If func adds new resources,
+ * func might or might not get called for them. func cannot both
+ * add and delete an equal number of resources!
+ */
+
+void
+FindClientResourcesByType(
+ ClientPtr client,
+ RESTYPE type,
+ FindResType func,
+ pointer cdata
+){
+ ResourcePtr *resources;
+ ResourcePtr this, next;
+ int i, elements;
+ int *eltptr;
+
+ if (!client)
+ client = serverClient;
+
+ resources = clientTable[client->index].resources;
+ eltptr = &clientTable[client->index].elements;
+ for (i = 0; i < clientTable[client->index].buckets; i++)
+ {
+ for (this = resources[i]; this; this = next)
+ {
+ next = this->next;
+ if (!type || this->type == type) {
+ elements = *eltptr;
+ (*func)(this->value, this->id, cdata);
+ if (*eltptr != elements)
+ next = resources[i]; /* start over */
+ }
+ }
+ }
+}
+
+void
+FindAllClientResources(
+ ClientPtr client,
+ FindAllRes func,
+ pointer cdata
+){
+ ResourcePtr *resources;
+ ResourcePtr this, next;
+ int i, elements;
+ int *eltptr;
+
+ if (!client)
+ client = serverClient;
+
+ resources = clientTable[client->index].resources;
+ eltptr = &clientTable[client->index].elements;
+ for (i = 0; i < clientTable[client->index].buckets; i++)
+ {
+ for (this = resources[i]; this; this = next)
+ {
+ next = this->next;
+ elements = *eltptr;
+ (*func)(this->value, this->id, this->type, cdata);
+ if (*eltptr != elements)
+ next = resources[i]; /* start over */
+ }
+ }
+}
+
+
+pointer
+LookupClientResourceComplex(
+ ClientPtr client,
+ RESTYPE type,
+ FindComplexResType func,
+ pointer cdata
+){
+ ResourcePtr *resources;
+ ResourcePtr this, next;
+ pointer value;
+ int i;
+
+ if (!client)
+ client = serverClient;
+
+ resources = clientTable[client->index].resources;
+ for (i = 0; i < clientTable[client->index].buckets; i++) {
+ for (this = resources[i]; this; this = next) {
+ next = this->next;
+ if (!type || this->type == type) {
+ /* workaround func freeing the type as DRI1 does */
+ value = this->value;
+ if((*func)(value, this->id, cdata))
+ return value;
+ }
+ }
+ }
+ return NULL;
+}
+
+
+void
+FreeClientNeverRetainResources(ClientPtr client)
+{
+ ResourcePtr *resources;
+ ResourcePtr this;
+ ResourcePtr *prev;
+ int j, elements;
+ int *eltptr;
+
+ if (!client)
+ return;
+
+ resources = clientTable[client->index].resources;
+ eltptr = &clientTable[client->index].elements;
+ for (j=0; j < clientTable[client->index].buckets; j++)
+ {
+ prev = &resources[j];
+ while ( (this = *prev) )
+ {
+ RESTYPE rtype = this->type;
+ if (rtype & RC_NEVERRETAIN)
+ {
+#ifdef XSERVER_DTRACE
+ XSERVER_RESOURCE_FREE(this->id, this->type,
+ this->value, TypeNameString(this->type));
+#endif
+ *prev = this->next;
+ clientTable[client->index].elements--;
+
+ CallResourceStateCallback(ResourceStateFreeing, this);
+
+ elements = *eltptr;
+ (*resourceTypes[rtype & TypeMask].deleteFunc)(this->value, this->id);
+ free(this);
+ if (*eltptr != elements)
+ prev = &resources[j]; /* prev may no longer be valid */
+ }
+ else
+ prev = &this->next;
+ }
+ }
+}
+
+void
+FreeClientResources(ClientPtr client)
+{
+ ResourcePtr *resources;
+ ResourcePtr this;
+ int j;
+
+ /* This routine shouldn't be called with a null client, but just in
+ case ... */
+
+ if (!client)
+ return;
+
+ HandleSaveSet(client);
+
+ resources = clientTable[client->index].resources;
+ for (j=0; j < clientTable[client->index].buckets; j++)
+ {
+ /* It may seem silly to update the head of this resource list as
+ we delete the members, since the entire list will be deleted any way,
+ but there are some resource deletion functions "FreeClientPixels" for
+ one which do a LookupID on another resource id (a Colormap id in this
+ case), so the resource list must be kept valid up to the point that
+ it is deleted, so every time we delete a resource, we must update the
+ head, just like in FreeResource. I hope that this doesn't slow down
+ mass deletion appreciably. PRH */
+
+ ResourcePtr *head;
+
+ head = &resources[j];
+
+ for (this = *head; this; this = *head)
+ {
+ RESTYPE rtype = this->type;
+#ifdef XSERVER_DTRACE
+ XSERVER_RESOURCE_FREE(this->id, this->type,
+ this->value, TypeNameString(this->type));
+#endif
+ *head = this->next;
+ clientTable[client->index].elements--;
+
+ CallResourceStateCallback(ResourceStateFreeing, this);
+
+ (*resourceTypes[rtype & TypeMask].deleteFunc)(this->value, this->id);
+ free(this);
+ }
+ }
+ free(clientTable[client->index].resources);
+ clientTable[client->index].resources = NULL;
+ clientTable[client->index].buckets = 0;
+}
+
+void
+FreeAllResources(void)
+{
+ int i;
+
+ for (i = currentMaxClients; --i >= 0; )
+ {
+ if (clientTable[i].buckets)
+ FreeClientResources(clients[i]);
+ }
+}
+
+Bool
+LegalNewID(XID id, ClientPtr client)
+{
+ pointer val;
+ int rc;
+
+#ifdef PANORAMIX
+ XID minid, maxid;
+
+ if (!noPanoramiXExtension) {
+ minid = client->clientAsMask | (client->index ?
+ SERVER_BIT : SERVER_MINID);
+ maxid = (clientTable[client->index].fakeID | RESOURCE_ID_MASK) + 1;
+ if ((id >= minid) && (id <= maxid))
+ return TRUE;
+ }
+#endif /* PANORAMIX */
+ if (client->clientAsMask == (id & ~RESOURCE_ID_MASK))
+ {
+ rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,
+ DixGetAttrAccess);
+ return rc == BadValue;
+ }
+ return FALSE;
+}
+
+int
+dixLookupResourceByType(pointer *result, XID id, RESTYPE rtype,
+ ClientPtr client, Mask mode)
+{
+ int cid = CLIENT_ID(id);
+ ResourcePtr res = NULL;
+
+ *result = NULL;
+ if ((rtype & TypeMask) > lastResourceType)
+ return BadImplementation;
+
+ if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {
+ res = clientTable[cid].resources[Hash(cid, id)];
+
+ for (; res; res = res->next)
+ if (res->id == id && res->type == rtype)
+ break;
+ }
+ if (!res)
+ return resourceTypes[rtype & TypeMask].errorValue;
+
+ if (client) {
+ client->errorValue = id;
+ cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,
+ res->value, RT_NONE, NULL, mode);
+ if (cid == BadValue)
+ return resourceTypes[rtype & TypeMask].errorValue;
+ if (cid != Success)
+ return cid;
+ }
+
+ *result = res->value;
+ return Success;
+}
+
+int
+dixLookupResourceByClass(pointer *result, XID id, RESTYPE rclass,
+ ClientPtr client, Mask mode)
+{
+ int cid = CLIENT_ID(id);
+ ResourcePtr res = NULL;
+
+ *result = NULL;
+
+ if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {
+ res = clientTable[cid].resources[Hash(cid, id)];
+
+ for (; res; res = res->next)
+ if (res->id == id && (res->type & rclass))
+ break;
+ }
+ if (!res)
+ return BadValue;
+
+ if (client) {
+ client->errorValue = id;
+ cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,
+ res->value, RT_NONE, NULL, mode);
+ if (cid != Success)
+ return cid;
+ }
+
+ *result = res->value;
+ return Success;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 22:54:29 +0000