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Accepting request 345907 from home:michalsrb:branches:X11:XOrg

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- U_fix_for_Xlib_32-bit_request_number_issues.patch
  * Fix for overflow of requet number on 32bit platforms.
    (bnc#845916)

OBS-URL: https://build.opensuse.org/request/show/345907
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/libX11?expand=0&rev=31
This commit is contained in:
Michal Srb 2015-11-23 17:19:31 +00:00 committed by Git OBS Bridge
parent 694edfb277
commit 5ed82b41e6
3 changed files with 727 additions and 0 deletions
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U_fix_for_Xlib_32-bit_request_number_issues.patch Normal file
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@ -0,0 +1,718 @@
Git-commit: a72d2d06c002b644b7040a0a9936c8525e092ba8
Author: Christian Linhart <chris@demorecorder.com>
Subject: fix for Xlib 32-bit request number issues
Signed-off-by: Michal Srb <msrb@suse.com>
References: bnc#845916 fdo#71338
Make use of the new 64-bit sequence number API in XCB 1.11.1 to avoid
the 32-bit sequence number wrap in libX11.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71338
Signed-off-by: Christian Linhart <chris@demorecorder.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
diff --git a/configure.ac b/configure.ac
index 92b791c..14ad543 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,8 +68,8 @@ AC_SUBST(LDFLAGS_FOR_BUILD)
# Checks for pkg-config packages
# Always required
-X11_REQUIRES='xproto >= 7.0.17 xextproto xtrans xcb >= 1.1.92'
-X11_EXTRA_DEPS="xcb >= 1.1.92"
+X11_REQUIRES='xproto >= 7.0.17 xextproto xtrans xcb >= 1.11.1'
+X11_EXTRA_DEPS="xcb >= 1.11.1"
PKG_PROG_PKG_CONFIG()
diff --git a/include/X11/Xlibint.h b/include/X11/Xlibint.h
index 4431559..d2563d6 100644
--- a/include/X11/Xlibint.h
+++ b/include/X11/Xlibint.h
@@ -38,6 +38,7 @@ from The Open Group.
* Warning, there be dragons here....
*/
+#include <stdint.h>
#include <X11/Xlib.h>
#include <X11/Xproto.h> /* to declare xEvent */
#include <X11/XlibConf.h> /* for configured options like XTHREADS */
@@ -205,10 +206,122 @@ struct _XDisplay
XGenericEventCookie * /* in */,
XGenericEventCookie * /* out*/);
void *cookiejar; /* cookie events returned but not claimed */
+#ifndef LONG64
+ unsigned long last_request_read_upper32bit;
+ unsigned long request_upper32bit;
+#endif
};
#define XAllocIDs(dpy,ids,n) (*(dpy)->idlist_alloc)(dpy,ids,n)
+/*
+ * access "last_request_read" and "request" with 64bit
+ * warning: the value argument of the SET-macros must not
+ * have any side-effects because it may get called twice.
+ */
+#ifndef LONG64
+/* accessors for 32-bit unsigned long */
+
+#define X_DPY_GET_REQUEST(dpy) \
+ ( \
+ ((uint64_t)(((struct _XDisplay*)dpy)->request)) \
+ + (((uint64_t)(((struct _XDisplay*)dpy)->request_upper32bit)) << 32) \
+ )
+
+#define X_DPY_SET_REQUEST(dpy, value) \
+ ( \
+ (((struct _XDisplay*)dpy)->request = \
+ (value) & 0xFFFFFFFFUL), \
+ (((struct _XDisplay*)dpy)->request_upper32bit = \
+ ((uint64_t)(value)) >> 32), \
+ (void)0 /* don't use the result */ \
+ )
+
+#define X_DPY_GET_LAST_REQUEST_READ(dpy) \
+ ( \
+ ((uint64_t)(((struct _XDisplay*)dpy)->last_request_read)) \
+ + ( \
+ ((uint64_t)( \
+ ((struct _XDisplay*)dpy)->last_request_read_upper32bit \
+ )) << 32 \
+ ) \
+ )
+
+#define X_DPY_SET_LAST_REQUEST_READ(dpy, value) \
+ ( \
+ (((struct _XDisplay*)dpy)->last_request_read = \
+ (value) & 0xFFFFFFFFUL), \
+ (((struct _XDisplay*)dpy)->last_request_read_upper32bit = \
+ ((uint64_t)(value)) >> 32), \
+ (void)0 /* don't use the result */ \
+ )
+
+/*
+ * widen a 32-bit sequence number to a 64 sequence number.
+ * This macro makes the following assumptions:
+ * - ulseq refers to a sequence that has already been sent
+ * - ulseq means the most recent possible sequence number
+ * with these lower 32 bits.
+ *
+ * The following optimization is used:
+ * The comparison result is taken a 0 or 1 to avoid a branch.
+ */
+#define X_DPY_WIDEN_UNSIGNED_LONG_SEQ(dpy, ulseq) \
+ ( \
+ ((uint64_t)ulseq) \
+ + \
+ (( \
+ ((uint64_t)(((struct _XDisplay*)dpy)->request_upper32bit)) \
+ - (uint64_t)( \
+ (ulseq) > (((struct _XDisplay*)dpy)->request) \
+ ) \
+ ) << 32) \
+ )
+
+#define X_DPY_REQUEST_INCREMENT(dpy) \
+ ( \
+ ((struct _XDisplay*)dpy)->request++, \
+ ( \
+ (((struct _XDisplay*)dpy)->request == 0) ? ( \
+ ((struct _XDisplay*)dpy)->request_upper32bit++ \
+ ) : 0 \
+ ), \
+ (void)0 /* don't use the result */ \
+ )
+
+
+#define X_DPY_REQUEST_DECREMENT(dpy) \
+ ( \
+ ( \
+ (((struct _XDisplay*)dpy)->request == 0) ? (\
+ ((struct _XDisplay*)dpy)->request--, /* wrap */ \
+ ((struct _XDisplay*)dpy)->request_upper32bit-- \
+ ) : ( \
+ ((struct _XDisplay*)dpy)->request-- \
+ ) \
+ ), \
+ (void)0 /* don't use the result */ \
+ )
+
+#else
+/* accessors for 64-bit unsigned long */
+#define X_DPY_GET_REQUEST(dpy) \
+ (((struct _XDisplay*)dpy)->request)
+#define X_DPY_SET_REQUEST(dpy, value) \
+ ((struct _XDisplay*)dpy)->request = (value)
+
+#define X_DPY_GET_LAST_REQUEST_READ(dpy) \
+ (((struct _XDisplay*)dpy)->last_request_read)
+#define X_DPY_SET_LAST_REQUEST_READ(dpy, value) \
+ ((struct _XDisplay*)dpy)->last_request_read = (value)
+
+#define X_DPY_WIDEN_UNSIGNED_LONG_SEQ(dpy, ulseq) ulseq
+
+#define X_DPY_REQUEST_INCREMENT(dpy) ((struct _XDisplay*)dpy)->request++
+#define X_DPY_REQUEST_DECREMENT(dpy) ((struct _XDisplay*)dpy)->request--
+#endif
+
+
#ifndef _XEVENT_
/*
* _QEvent datatype for use in input queueing.
@@ -673,6 +786,11 @@ typedef struct _XInternalAsync {
XPointer data;
} _XAsyncHandler;
+/*
+ * This struct is part of the ABI and is defined by value
+ * in user-code. This means that we cannot make
+ * the sequence-numbers 64bit.
+ */
typedef struct _XAsyncEState {
unsigned long min_sequence_number;
unsigned long max_sequence_number;
diff --git a/src/ClDisplay.c b/src/ClDisplay.c
index bddd773..aa904e5 100644
--- a/src/ClDisplay.c
+++ b/src/ClDisplay.c
@@ -65,7 +65,7 @@ XCloseDisplay (
(*ext->close_display)(dpy, &ext->codes);
}
/* if the closes generated more protocol, sync them up */
- if (dpy->request != dpy->last_request_read)
+ if (X_DPY_GET_REQUEST(dpy) != X_DPY_GET_LAST_REQUEST_READ(dpy))
XSync(dpy, 1);
}
xcb_disconnect(dpy->xcb->connection);
diff --git a/src/Font.c b/src/Font.c
index 650bc6f..a73f9b1 100644
--- a/src/Font.c
+++ b/src/Font.c
@@ -105,7 +105,7 @@ XFontStruct *XLoadQueryFont(
return font_result;
LockDisplay(dpy);
GetReq(OpenFont, req);
- seq = dpy->request;
+ seq = dpy->request; /* Can't use extended sequence number here */
nbytes = req->nbytes = name ? strlen(name) : 0;
req->fid = fid = XAllocID(dpy);
req->length += (nbytes+3)>>2;
diff --git a/src/GetAtomNm.c b/src/GetAtomNm.c
index 32de50d..d7f06e3 100644
--- a/src/GetAtomNm.c
+++ b/src/GetAtomNm.c
@@ -87,8 +87,8 @@ char *XGetAtomName(
}
typedef struct {
- unsigned long start_seq;
- unsigned long stop_seq;
+ uint64_t start_seq;
+ uint64_t stop_seq;
Atom *atoms;
char **names;
int idx;
@@ -107,10 +107,11 @@ Bool _XGetAtomNameHandler(
register _XGetAtomNameState *state;
xGetAtomNameReply replbuf;
register xGetAtomNameReply *repl;
+ uint64_t last_request_read = X_DPY_GET_LAST_REQUEST_READ(dpy);
state = (_XGetAtomNameState *)data;
- if (dpy->last_request_read < state->start_seq ||
- dpy->last_request_read > state->stop_seq)
+ if (last_request_read < state->start_seq ||
+ last_request_read > state->stop_seq)
return False;
while (state->idx < state->count && state->names[state->idx])
state->idx++;
@@ -152,7 +153,7 @@ XGetAtomNames (
int missed = -1;
LockDisplay(dpy);
- async_state.start_seq = dpy->request + 1;
+ async_state.start_seq = X_DPY_GET_REQUEST(dpy) + 1;
async_state.atoms = atoms;
async_state.names = names_return;
async_state.idx = 0;
@@ -165,7 +166,7 @@ XGetAtomNames (
for (i = 0; i < count; i++) {
if (!(names_return[i] = _XGetAtomName(dpy, atoms[i]))) {
missed = i;
- async_state.stop_seq = dpy->request;
+ async_state.stop_seq = X_DPY_GET_REQUEST(dpy);
}
}
if (missed >= 0) {
diff --git a/src/GetWAttrs.c b/src/GetWAttrs.c
index c10824c..0f5f7bb 100644
--- a/src/GetWAttrs.c
+++ b/src/GetWAttrs.c
@@ -30,8 +30,8 @@ in this Software without prior written authorization from The Open Group.
#include "Xlibint.h"
typedef struct _WAttrsState {
- unsigned long attr_seq;
- unsigned long geom_seq;
+ uint64_t attr_seq;
+ uint64_t geom_seq;
XWindowAttributes *attr;
} _XWAttrsState;
@@ -47,10 +47,11 @@ _XWAttrsHandler(
xGetWindowAttributesReply replbuf;
register xGetWindowAttributesReply *repl;
register XWindowAttributes *attr;
+ uint64_t last_request_read = X_DPY_GET_LAST_REQUEST_READ(dpy);
state = (_XWAttrsState *)data;
- if (dpy->last_request_read != state->attr_seq) {
- if (dpy->last_request_read == state->geom_seq &&
+ if (last_request_read != state->attr_seq) {
+ if (last_request_read == state->geom_seq &&
!state->attr &&
rep->generic.type == X_Error &&
rep->error.errorCode == BadDrawable)
@@ -99,7 +100,7 @@ _XGetWindowAttributes(
GetResReq(GetWindowAttributes, w, req);
- async_state.attr_seq = dpy->request;
+ async_state.attr_seq = X_DPY_GET_REQUEST(dpy);
async_state.geom_seq = 0;
async_state.attr = attr;
async.next = dpy->async_handlers;
@@ -109,7 +110,7 @@ _XGetWindowAttributes(
GetResReq(GetGeometry, w, req);
- async_state.geom_seq = dpy->request;
+ async_state.geom_seq = X_DPY_GET_REQUEST(dpy);
if (!_XReply (dpy, (xReply *)&rep, 0, xTrue)) {
DeqAsyncHandler(dpy, &async);
diff --git a/src/IntAtom.c b/src/IntAtom.c
index 3042b65..d9c6c58 100644
--- a/src/IntAtom.c
+++ b/src/IntAtom.c
@@ -188,8 +188,8 @@ XInternAtom (
}
typedef struct {
- unsigned long start_seq;
- unsigned long stop_seq;
+ uint64_t start_seq;
+ uint64_t stop_seq;
char **names;
Atom *atoms;
int count;
@@ -208,10 +208,12 @@ Bool _XIntAtomHandler(
register int i, idx = 0;
xInternAtomReply replbuf;
register xInternAtomReply *repl;
+ uint64_t last_request_read = X_DPY_GET_LAST_REQUEST_READ(dpy);
state = (_XIntAtomState *)data;
- if (dpy->last_request_read < state->start_seq ||
- dpy->last_request_read > state->stop_seq)
+
+ if (last_request_read < state->start_seq ||
+ last_request_read > state->stop_seq)
return False;
for (i = 0; i < state->count; i++) {
if (state->atoms[i] & 0x80000000) {
@@ -252,7 +254,7 @@ XInternAtoms (
xInternAtomReply rep;
LockDisplay(dpy);
- async_state.start_seq = dpy->request + 1;
+ async_state.start_seq = X_DPY_GET_REQUEST(dpy) + 1;
async_state.atoms = atoms_return;
async_state.names = names;
async_state.count = count - 1;
@@ -266,7 +268,7 @@ XInternAtoms (
&sig, &idx, &n))) {
missed = i;
atoms_return[i] = ~((Atom)idx);
- async_state.stop_seq = dpy->request;
+ async_state.stop_seq = X_DPY_GET_REQUEST(dpy);
}
}
if (missed >= 0) {
diff --git a/src/OpenDis.c b/src/OpenDis.c
index 636860e..8272357 100644
--- a/src/OpenDis.c
+++ b/src/OpenDis.c
@@ -197,8 +197,8 @@ XOpenDisplay (
dpy->idlist_alloc = _XAllocIDs;
dpy->synchandler = NULL;
dpy->savedsynchandler = NULL;
- dpy->request = 0;
- dpy->last_request_read = 0;
+ X_DPY_SET_REQUEST(dpy, 0);
+ X_DPY_SET_LAST_REQUEST_READ(dpy, 0);
dpy->default_screen = iscreen; /* Value returned by ConnectDisplay */
dpy->last_req = (char *)&_dummy_request;
diff --git a/src/PutImage.c b/src/PutImage.c
index de085bc..13cbba3 100644
--- a/src/PutImage.c
+++ b/src/PutImage.c
@@ -602,7 +602,7 @@ static int const HalfOrderWord[12] = {
#define UnGetReq(name)\
dpy->bufptr -= SIZEOF(x##name##Req);\
- dpy->request--
+ X_DPY_REQUEST_DECREMENT(dpy)
static void
SendXYImage(
diff --git a/src/XlibAsync.c b/src/XlibAsync.c
index eb2b819..d62000e 100644
--- a/src/XlibAsync.c
+++ b/src/XlibAsync.c
@@ -32,6 +32,18 @@ from The Open Group.
#include <X11/Xlibint.h>
#include <X11/Xos.h>
+/*
+ * Xlib's _XAsyncErrorState sequence number may wrap in 32bit
+ * and we cannot use 64bit as it's public API.
+ */
+#ifdef LONG64
+#define _XLIB_ASYNC_SEQUENCE_CMP(a,op,b) ((a == 0) || (a op b))
+#else /* !LONG64 */
+#define _XLIB_ASYNC_SEQUENCE_CMP(a,op,b) ((a == 0) || \
+ (((a op b) && (b - a op (UINT32_MAX >> 1))) || \
+ ((b op a) && ((UINT32_MAX >> 1) op a - b))))
+#endif /* !LONG64 */
+
/*ARGSUSED*/
Bool
_XAsyncErrorHandler(
@@ -51,10 +63,8 @@ _XAsyncErrorHandler(
rep->error.majorCode == state->major_opcode) &&
(!state->minor_opcode ||
rep->error.minorCode == state->minor_opcode) &&
- (!state->min_sequence_number ||
- (state->min_sequence_number <= dpy->last_request_read)) &&
- (!state->max_sequence_number ||
- (state->max_sequence_number >= dpy->last_request_read))) {
+ (_XLIB_ASYNC_SEQUENCE_CMP(state->min_sequence_number,<=,dpy->last_request_read)) &&
+ (_XLIB_ASYNC_SEQUENCE_CMP(state->max_sequence_number,>=,dpy->last_request_read))) {
state->last_error_received = rep->error.errorCode;
state->error_count++;
return True;
diff --git a/src/XlibInt.c b/src/XlibInt.c
index bbc5c82..7296948 100644
--- a/src/XlibInt.c
+++ b/src/XlibInt.c
@@ -167,8 +167,12 @@ void _XPollfdCacheDel(
static int sync_hazard(Display *dpy)
{
- unsigned long span = dpy->request - dpy->last_request_read;
- unsigned long hazard = min((dpy->bufmax - dpy->buffer) / SIZEOF(xReq), 65535 - 10);
+ /*
+ * "span" and "hazard" need to be signed such that the ">=" comparision
+ * works correctly in the case that hazard is greater than 65525
+ */
+ int64_t span = X_DPY_GET_REQUEST(dpy) - X_DPY_GET_LAST_REQUEST_READ(dpy);
+ int64_t hazard = min((dpy->bufmax - dpy->buffer) / SIZEOF(xReq), 65535 - 10);
return span >= 65535 - hazard - 10;
}
@@ -194,7 +198,7 @@ void _XSeqSyncFunction(
xGetInputFocusReply rep;
register xReq *req;
- if ((dpy->request - dpy->last_request_read) >= (65535 - BUFSIZE/SIZEOF(xReq))) {
+ if ((X_DPY_GET_REQUEST(dpy) - X_DPY_GET_LAST_REQUEST_READ(dpy)) >= (65535 - BUFSIZE/SIZEOF(xReq))) {
GetEmptyReq(GetInputFocus, req);
(void) _XReply (dpy, (xReply *)&rep, 0, xTrue);
sync_while_locked(dpy);
@@ -276,9 +280,9 @@ _XSetLastRequestRead(
register Display *dpy,
register xGenericReply *rep)
{
- register unsigned long newseq, lastseq;
+ register uint64_t newseq, lastseq;
- lastseq = dpy->last_request_read;
+ lastseq = X_DPY_GET_LAST_REQUEST_READ(dpy);
/*
* KeymapNotify has no sequence number, but is always guaranteed
* to immediately follow another event, except when generated via
@@ -287,20 +291,21 @@ _XSetLastRequestRead(
if ((rep->type & 0x7f) == KeymapNotify)
return(lastseq);
- newseq = (lastseq & ~((unsigned long)0xffff)) | rep->sequenceNumber;
+ newseq = (lastseq & ~((uint64_t)0xffff)) | rep->sequenceNumber;
if (newseq < lastseq) {
newseq += 0x10000;
- if (newseq > dpy->request) {
+ if (newseq > X_DPY_GET_REQUEST(dpy)) {
(void) fprintf (stderr,
- "Xlib: sequence lost (0x%lx > 0x%lx) in reply type 0x%x!\n",
- newseq, dpy->request,
+ "Xlib: sequence lost (0x%llx > 0x%llx) in reply type 0x%x!\n",
+ (unsigned long long)newseq,
+ (unsigned long long)(X_DPY_GET_REQUEST(dpy)),
(unsigned int) rep->type);
newseq -= 0x10000;
}
}
- dpy->last_request_read = newseq;
+ X_DPY_SET_LAST_REQUEST_READ(dpy, newseq);
return(newseq);
}
@@ -1363,10 +1368,10 @@ static int _XPrintDefaultError(
mesg, BUFSIZ);
fputs(" ", fp);
(void) fprintf(fp, mesg, event->serial);
- XGetErrorDatabaseText(dpy, mtype, "CurrentSerial", "Current Serial #%d",
+ XGetErrorDatabaseText(dpy, mtype, "CurrentSerial", "Current Serial #%lld",
mesg, BUFSIZ);
fputs("\n ", fp);
- (void) fprintf(fp, mesg, dpy->request);
+ (void) fprintf(fp, mesg, (unsigned long long)(X_DPY_GET_REQUEST(dpy)));
fputs("\n", fp);
if (event->error_code == BadImplementation) return 0;
return 1;
@@ -1720,7 +1725,7 @@ void *_XGetRequest(Display *dpy, CARD8 type, size_t len)
req->reqType = type;
req->length = len / 4;
dpy->bufptr += len;
- dpy->request++;
+ X_DPY_REQUEST_INCREMENT(dpy);
return req;
}
diff --git a/src/Xxcbint.h b/src/Xxcbint.h
index bf41c23..20a6386 100644
--- a/src/Xxcbint.h
+++ b/src/Xxcbint.h
@@ -13,12 +13,12 @@
#include <X11/Xlib-xcb.h>
#include "locking.h"
-#define XLIB_SEQUENCE_COMPARE(a,op,b) (((long) (a) - (long) (b)) op 0)
+#define XLIB_SEQUENCE_COMPARE(a,op,b) (((int64_t) (a) - (int64_t) (b)) op 0)
typedef struct PendingRequest PendingRequest;
struct PendingRequest {
PendingRequest *next;
- unsigned long sequence;
+ uint64_t sequence;
unsigned reply_waiter;
};
diff --git a/src/xcb_io.c b/src/xcb_io.c
index 5987329..bd26a62 100644
--- a/src/xcb_io.c
+++ b/src/xcb_io.c
@@ -68,22 +68,8 @@ static void require_socket(Display *dpy)
if(!xcb_take_socket(dpy->xcb->connection, return_socket, dpy,
flags, &sent))
_XIOError(dpy);
- /* Xlib uses unsigned long for sequence numbers. XCB
- * uses 64-bit internally, but currently exposes an
- * unsigned int API. If these differ, Xlib cannot track
- * the full 64-bit sequence number if 32-bit wrap
- * happens while Xlib does not own the socket. A
- * complete fix would be to make XCB's public API use
- * 64-bit sequence numbers. */
- if (sizeof(unsigned long) > sizeof(unsigned int) &&
- dpy->xcb->event_owner == XlibOwnsEventQueue &&
- (sent - dpy->last_request_read >= (UINT64_C(1) << 32))) {
- throw_thread_fail_assert("Sequence number wrapped "
- "beyond 32 bits while Xlib "
- "did not own the socket",
- xcb_xlib_seq_number_wrapped);
- }
- dpy->xcb->last_flushed = dpy->request = sent;
+ dpy->xcb->last_flushed = sent;
+ X_DPY_SET_REQUEST(dpy, sent);
dpy->bufmax = dpy->xcb->real_bufmax;
}
}
@@ -145,7 +131,7 @@ static void check_internal_connections(Display *dpy)
}
}
-static PendingRequest *append_pending_request(Display *dpy, unsigned long sequence)
+static PendingRequest *append_pending_request(Display *dpy, uint64_t sequence)
{
PendingRequest *node = malloc(sizeof(PendingRequest));
assert(node);
@@ -214,14 +200,13 @@ static int handle_error(Display *dpy, xError *err, Bool in_XReply)
return 0;
}
-/* Widen a 32-bit sequence number into a native-word-size (unsigned long)
- * sequence number. Treating the comparison as a 1 and shifting it avoids a
- * conditional branch, and shifting by 16 twice avoids a compiler warning when
- * sizeof(unsigned long) == 4. */
-static void widen(unsigned long *wide, unsigned int narrow)
+/* Widen a 32-bit sequence number into a 64bit (uint64_t) sequence number.
+ * Treating the comparison as a 1 and shifting it avoids a conditional branch.
+ */
+static void widen(uint64_t *wide, unsigned int narrow)
{
- unsigned long new = (*wide & ~0xFFFFFFFFUL) | narrow;
- *wide = new + ((unsigned long) (new < *wide) << 16 << 16);
+ uint64_t new = (*wide & ~((uint64_t)0xFFFFFFFFUL)) | narrow;
+ *wide = new + (((uint64_t)(new < *wide)) << 32);
}
/* Thread-safety rules:
@@ -260,20 +245,20 @@ static xcb_generic_reply_t *poll_for_event(Display *dpy)
{
PendingRequest *req = dpy->xcb->pending_requests;
xcb_generic_event_t *event = dpy->xcb->next_event;
- unsigned long event_sequence = dpy->last_request_read;
+ uint64_t event_sequence = X_DPY_GET_LAST_REQUEST_READ(dpy);
widen(&event_sequence, event->full_sequence);
if(!req || XLIB_SEQUENCE_COMPARE(event_sequence, <, req->sequence)
|| (event->response_type != X_Error && event_sequence == req->sequence))
{
- if (XLIB_SEQUENCE_COMPARE(event_sequence, >,
- dpy->request))
+ uint64_t request = X_DPY_GET_REQUEST(dpy);
+ if (XLIB_SEQUENCE_COMPARE(event_sequence, >, request))
{
throw_thread_fail_assert("Unknown sequence "
"number while "
"processing queue",
xcb_xlib_threads_sequence_lost);
}
- dpy->last_request_read = event_sequence;
+ X_DPY_SET_LAST_REQUEST_READ(dpy, event_sequence);
dpy->xcb->next_event = NULL;
return (xcb_generic_reply_t *) event;
}
@@ -289,15 +274,16 @@ static xcb_generic_reply_t *poll_for_response(Display *dpy)
while(!(response = poll_for_event(dpy)) &&
(req = dpy->xcb->pending_requests) &&
!req->reply_waiter &&
- xcb_poll_for_reply(dpy->xcb->connection, req->sequence, &response, &error))
+ xcb_poll_for_reply64(dpy->xcb->connection, req->sequence, &response, &error))
{
- if(XLIB_SEQUENCE_COMPARE(req->sequence, >, dpy->request))
+ uint64_t request = X_DPY_GET_REQUEST(dpy);
+ if(XLIB_SEQUENCE_COMPARE(req->sequence, >, request))
{
throw_thread_fail_assert("Unknown sequence number "
"while awaiting reply",
xcb_xlib_threads_sequence_lost);
}
- dpy->last_request_read = req->sequence;
+ X_DPY_SET_LAST_REQUEST_READ(dpy, req->sequence);
if(response)
break;
dequeue_pending_request(dpy, req);
@@ -456,6 +442,7 @@ void _XSend(Display *dpy, const char *data, long size)
static char const pad[3];
struct iovec vec[3];
uint64_t requests;
+ uint64_t dpy_request;
_XExtension *ext;
xcb_connection_t *c = dpy->xcb->connection;
if(dpy->flags & XlibDisplayIOError)
@@ -464,6 +451,10 @@ void _XSend(Display *dpy, const char *data, long size)
if(dpy->bufptr == dpy->buffer && !size)
return;
+ /* append_pending_request does not alter the dpy request number
+ * therefore we can get it outside of the loop and the if
+ */
+ dpy_request = X_DPY_GET_REQUEST(dpy);
/* iff we asked XCB to set aside errors, we must pick those up
* eventually. iff there are async handlers, we may have just
* issued requests that will generate replies. in either case,
@@ -471,11 +462,11 @@ void _XSend(Display *dpy, const char *data, long size)
if(dpy->xcb->event_owner != XlibOwnsEventQueue || dpy->async_handlers)
{
uint64_t sequence;
- for(sequence = dpy->xcb->last_flushed + 1; sequence <= dpy->request; ++sequence)
+ for(sequence = dpy->xcb->last_flushed + 1; sequence <= dpy_request; ++sequence)
append_pending_request(dpy, sequence);
}
- requests = dpy->request - dpy->xcb->last_flushed;
- dpy->xcb->last_flushed = dpy->request;
+ requests = dpy_request - dpy->xcb->last_flushed;
+ dpy->xcb->last_flushed = dpy_request;
vec[0].iov_base = dpy->buffer;
vec[0].iov_len = dpy->bufptr - dpy->buffer;
@@ -570,6 +561,7 @@ Status _XReply(Display *dpy, xReply *rep, int extra, Bool discard)
xcb_connection_t *c = dpy->xcb->connection;
char *reply;
PendingRequest *current;
+ uint64_t dpy_request;
if (dpy->xcb->reply_data)
throw_extlib_fail_assert("Extra reply data still left in queue",
@@ -579,10 +571,12 @@ Status _XReply(Display *dpy, xReply *rep, int extra, Bool discard)
return 0;
_XSend(dpy, NULL, 0);
- if(dpy->xcb->pending_requests_tail && dpy->xcb->pending_requests_tail->sequence == dpy->request)
+ dpy_request = X_DPY_GET_REQUEST(dpy);
+ if(dpy->xcb->pending_requests_tail
+ && dpy->xcb->pending_requests_tail->sequence == dpy_request)
current = dpy->xcb->pending_requests_tail;
else
- current = append_pending_request(dpy, dpy->request);
+ current = append_pending_request(dpy, dpy_request);
/* Don't let any other thread get this reply. */
current->reply_waiter = 1;
@@ -599,9 +593,9 @@ Status _XReply(Display *dpy, xReply *rep, int extra, Bool discard)
}
req->reply_waiter = 1;
UnlockDisplay(dpy);
- response = xcb_wait_for_reply(c, req->sequence, &error);
+ response = xcb_wait_for_reply64(c, req->sequence, &error);
/* Any user locks on another thread must have been taken
- * while we slept in xcb_wait_for_reply. Classic Xlib
+ * while we slept in xcb_wait_for_reply64. Classic Xlib
* ignored those user locks in this case, so we do too. */
InternalLockDisplay(dpy, /* ignore user locks */ 1);
@@ -629,12 +623,13 @@ Status _XReply(Display *dpy, xReply *rep, int extra, Bool discard)
req->reply_waiter = 0;
ConditionBroadcast(dpy, dpy->xcb->reply_notify);
- if(XLIB_SEQUENCE_COMPARE(req->sequence, >, dpy->request)) {
+ dpy_request = X_DPY_GET_REQUEST(dpy);
+ if(XLIB_SEQUENCE_COMPARE(req->sequence, >, dpy_request)) {
throw_thread_fail_assert("Unknown sequence number "
"while processing reply",
xcb_xlib_threads_sequence_lost);
}
- dpy->last_request_read = req->sequence;
+ X_DPY_SET_LAST_REQUEST_READ(dpy, req->sequence);
if(!response)
dequeue_pending_request(dpy, req);
@@ -654,9 +649,10 @@ Status _XReply(Display *dpy, xReply *rep, int extra, Bool discard)
if(dpy->xcb->next_event && dpy->xcb->next_event->response_type == X_Error)
{
xcb_generic_event_t *event = dpy->xcb->next_event;
- unsigned long event_sequence = dpy->last_request_read;
+ uint64_t last_request_read = X_DPY_GET_LAST_REQUEST_READ(dpy);
+ uint64_t event_sequence = last_request_read;
widen(&event_sequence, event->full_sequence);
- if(event_sequence == dpy->last_request_read)
+ if(event_sequence == last_request_read)
{
error = (xcb_generic_error_t *) event;
dpy->xcb->next_event = NULL;

7
libX11.changes
View File

@ -1,3 +1,10 @@
-------------------------------------------------------------------
Mon Nov 23 15:42:49 UTC 2015 - msrb@suse.com
- U_fix_for_Xlib_32-bit_request_number_issues.patch
* Fix for overflow of requet number on 32bit platforms.
(bnc#845916)
-------------------------------------------------------------------
Thu Mar 12 16:19:15 UTC 2015 - sndirsch@suse.com

2
libX11.spec
View File

@ -34,6 +34,7 @@ Patch7: p_khmer-compose.diff
Patch9: p_xlib_skip_ext_env.diff
# PATCH-FIX-UPSTREAM en-locales.diff fdo#48596 bnc#388711 -- Add missing data for more en locales
Patch15: en-locales.diff
Patch16: U_fix_for_Xlib_32-bit_request_number_issues.patch
BuildRoot: %{_tmppath}/%{name}-%{version}-build
BuildRequires: autoconf >= 2.60
@ -141,6 +142,7 @@ test -f nls/ja.S90/XLC_LOCALE.pre && exit 1
%patch7 -p0
%patch9 -p0
%patch15 -p0
%patch16 -p1
%build
# Got patches which change auto*files