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* Thu May 21 2009 Mark McLoughlin <markmc@redhat.com> - 0.6.3-10.fc12

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- Fix XML attribute escaping (bug #499791)
- Fix serious event handling issues causing guests to be destroyed (bug #499698)
This commit is contained in:
Mark McLoughlin 2009-05-21 12:07:09 +00:00
parent c6d11b43c9
commit a6e23d00fa
4 changed files with 401 additions and 1 deletions
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144
libvirt-0.6.3-event-handling-1.patch Normal file
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@ -0,0 +1,144 @@
From e7be6cc841a5652b73ddd2ccd3769c7f8bbad13d Mon Sep 17 00:00:00 2001
From: Daniel P. Berrange <berrange@redhat.com>
Date: Tue, 12 May 2009 16:41:49 +0000
Subject: [PATCH 1/2] Fix interrupting of main event thread & protect against accidental uniniitalized variables
---
qemud/event.c | 42 +++++++++++++++++++++++++++++++++++-------
1 files changed, 35 insertions(+), 7 deletions(-)
diff --git a/qemud/event.c b/qemud/event.c
index 65f548e..754f2b1 100644
--- a/qemud/event.c
+++ b/qemud/event.c
@@ -84,10 +84,10 @@ struct virEventLoop {
static struct virEventLoop eventLoop;
/* Unique ID for the next FD watch to be registered */
-static int nextWatch = 0;
+static int nextWatch = 1;
/* Unique ID for the next timer to be registered */
-static int nextTimer = 0;
+static int nextTimer = 1;
static void virEventLock(void)
{
@@ -143,15 +143,22 @@ int virEventAddHandleImpl(int fd, int events,
void virEventUpdateHandleImpl(int watch, int events) {
int i;
+ EVENT_DEBUG("Update handle w=%d e=%d", watch, events);
+
+ if (watch <= 0) {
+ VIR_WARN("Ignoring invalid update watch %d", watch);
+ return;
+ }
+
virEventLock();
for (i = 0 ; i < eventLoop.handlesCount ; i++) {
if (eventLoop.handles[i].watch == watch) {
eventLoop.handles[i].events =
virEventHandleTypeToPollEvent(events);
+ virEventInterruptLocked();
break;
}
}
- virEventInterruptLocked();
virEventUnlock();
}
@@ -164,6 +171,12 @@ void virEventUpdateHandleImpl(int watch, int events) {
int virEventRemoveHandleImpl(int watch) {
int i;
EVENT_DEBUG("Remove handle %d", watch);
+
+ if (watch <= 0) {
+ VIR_WARN("Ignoring invalid remove watch %d", watch);
+ return -1;
+ }
+
virEventLock();
for (i = 0 ; i < eventLoop.handlesCount ; i++) {
if (eventLoop.handles[i].deleted)
@@ -172,11 +185,11 @@ int virEventRemoveHandleImpl(int watch) {
if (eventLoop.handles[i].watch == watch) {
EVENT_DEBUG("mark delete %d %d", i, eventLoop.handles[i].fd);
eventLoop.handles[i].deleted = 1;
+ virEventInterruptLocked();
virEventUnlock();
return 0;
}
}
- virEventInterruptLocked();
virEventUnlock();
return -1;
}
@@ -232,6 +245,12 @@ void virEventUpdateTimeoutImpl(int timer, int frequency) {
struct timeval tv;
int i;
EVENT_DEBUG("Updating timer %d timeout with %d ms freq", timer, frequency);
+
+ if (timer <= 0) {
+ VIR_WARN("Ignoring invalid update timer %d", timer);
+ return;
+ }
+
if (gettimeofday(&tv, NULL) < 0) {
return;
}
@@ -244,10 +263,10 @@ void virEventUpdateTimeoutImpl(int timer, int frequency) {
frequency >= 0 ? frequency +
(((unsigned long long)tv.tv_sec)*1000) +
(((unsigned long long)tv.tv_usec)/1000) : 0;
+ virEventInterruptLocked();
break;
}
}
- virEventInterruptLocked();
virEventUnlock();
}
@@ -260,6 +279,12 @@ void virEventUpdateTimeoutImpl(int timer, int frequency) {
int virEventRemoveTimeoutImpl(int timer) {
int i;
EVENT_DEBUG("Remove timer %d", timer);
+
+ if (timer <= 0) {
+ VIR_WARN("Ignoring invalid remove timer %d", timer);
+ return -1;
+ }
+
virEventLock();
for (i = 0 ; i < eventLoop.timeoutsCount ; i++) {
if (eventLoop.timeouts[i].deleted)
@@ -267,11 +292,11 @@ int virEventRemoveTimeoutImpl(int timer) {
if (eventLoop.timeouts[i].timer == timer) {
eventLoop.timeouts[i].deleted = 1;
+ virEventInterruptLocked();
virEventUnlock();
return 0;
}
}
- virEventInterruptLocked();
virEventUnlock();
return -1;
}
@@ -617,9 +642,12 @@ static int virEventInterruptLocked(void)
char c = '\0';
if (!eventLoop.running ||
- pthread_self() == eventLoop.leader)
+ pthread_self() == eventLoop.leader) {
+ VIR_DEBUG("Skip interrupt, %d %d", eventLoop.running, (int)eventLoop.leader);
return 0;
+ }
+ VIR_DEBUG0("Interrupting");
if (safewrite(eventLoop.wakeupfd[1], &c, sizeof(c)) != sizeof(c))
return -1;
return 0;
--
1.6.0.6

197
libvirt-0.6.3-event-handling-2.patch Normal file
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@ -0,0 +1,197 @@
From 6483ee77ed12f037d68a6adc690624fa1b508dc0 Mon Sep 17 00:00:00 2001
From: Daniel P. Berrange <berrange@redhat.com>
Date: Tue, 12 May 2009 16:43:04 +0000
Subject: [PATCH 2/2] Fix watch/timer event deletion
---
qemud/event.c | 112 ++++++++++++++++++++++++++-------------------------------
1 files changed, 51 insertions(+), 61 deletions(-)
diff --git a/qemud/event.c b/qemud/event.c
index 754f2b1..a57d967 100644
--- a/qemud/event.c
+++ b/qemud/event.c
@@ -313,7 +313,7 @@ static int virEventCalculateTimeout(int *timeout) {
EVENT_DEBUG("Calculate expiry of %d timers", eventLoop.timeoutsCount);
/* Figure out if we need a timeout */
for (i = 0 ; i < eventLoop.timeoutsCount ; i++) {
- if (eventLoop.timeouts[i].deleted || eventLoop.timeouts[i].frequency < 0)
+ if (eventLoop.timeouts[i].frequency < 0)
continue;
EVENT_DEBUG("Got a timeout scheduled for %llu", eventLoop.timeouts[i].expiresAt);
@@ -350,32 +350,26 @@ static int virEventCalculateTimeout(int *timeout) {
* file handles. The caller must free the returned data struct
* returns: the pollfd array, or NULL on error
*/
-static int virEventMakePollFDs(struct pollfd **retfds) {
+static struct pollfd *virEventMakePollFDs(void) {
struct pollfd *fds;
- int i, nfds = 0;
+ int i;
- for (i = 0 ; i < eventLoop.handlesCount ; i++) {
- if (eventLoop.handles[i].deleted)
- continue;
- nfds++;
- }
- *retfds = NULL;
/* Setup the poll file handle data structs */
- if (VIR_ALLOC_N(fds, nfds) < 0)
- return -1;
+ if (VIR_ALLOC_N(fds, eventLoop.handlesCount) < 0)
+ return NULL;
- for (i = 0, nfds = 0 ; i < eventLoop.handlesCount ; i++) {
- if (eventLoop.handles[i].deleted)
- continue;
- fds[nfds].fd = eventLoop.handles[i].fd;
- fds[nfds].events = eventLoop.handles[i].events;
- fds[nfds].revents = 0;
+ for (i = 0 ; i < eventLoop.handlesCount ; i++) {
+ EVENT_DEBUG("Prepare n=%d w=%d, f=%d e=%d", i,
+ eventLoop.handles[i].watch,
+ eventLoop.handles[i].fd,
+ eventLoop.handles[i].events);
+ fds[i].fd = eventLoop.handles[i].fd;
+ fds[i].events = eventLoop.handles[i].events;
+ fds[i].revents = 0;
//EVENT_DEBUG("Wait for %d %d", eventLoop.handles[i].fd, eventLoop.handles[i].events);
- nfds++;
}
- *retfds = fds;
- return nfds;
+ return fds;
}
@@ -435,26 +429,30 @@ static int virEventDispatchTimeouts(void) {
* Returns 0 upon success, -1 if an error occurred
*/
static int virEventDispatchHandles(int nfds, struct pollfd *fds) {
- int i, n;
+ int i;
- for (i = 0, n = 0 ; i < eventLoop.handlesCount && n < nfds ; i++) {
+ /* NB, use nfds not eventLoop.handlesCount, because new
+ * fds might be added on end of list, and they're not
+ * in the fds array we've got */
+ for (i = 0 ; i < nfds ; i++) {
if (eventLoop.handles[i].deleted) {
- EVENT_DEBUG("Skip deleted %d", eventLoop.handles[i].fd);
+ EVENT_DEBUG("Skip deleted n=%d w=%d f=%d", i,
+ eventLoop.handles[i].watch, eventLoop.handles[i].fd);
continue;
}
- if (fds[n].revents) {
+ if (fds[i].revents) {
virEventHandleCallback cb = eventLoop.handles[i].cb;
void *opaque = eventLoop.handles[i].opaque;
- int hEvents = virPollEventToEventHandleType(fds[n].revents);
- EVENT_DEBUG("Dispatch %d %d %p", fds[n].fd,
- fds[n].revents, eventLoop.handles[i].opaque);
+ int hEvents = virPollEventToEventHandleType(fds[i].revents);
+ EVENT_DEBUG("Dispatch n=%d f=%d w=%d e=%d %p", i,
+ fds[i].fd, eventLoop.handles[i].watch,
+ fds[i].revents, eventLoop.handles[i].opaque);
virEventUnlock();
(cb)(eventLoop.handles[i].watch,
- fds[n].fd, hEvents, opaque);
+ fds[i].fd, hEvents, opaque);
virEventLock();
}
- n++;
}
return 0;
@@ -545,22 +543,21 @@ static int virEventCleanupHandles(void) {
* at least one file handle has an event, or a timer expires
*/
int virEventRunOnce(void) {
- struct pollfd *fds;
+ struct pollfd *fds = NULL;
int ret, timeout, nfds;
virEventLock();
eventLoop.running = 1;
eventLoop.leader = pthread_self();
- if ((nfds = virEventMakePollFDs(&fds)) < 0) {
- virEventUnlock();
- return -1;
- }
- if (virEventCalculateTimeout(&timeout) < 0) {
- VIR_FREE(fds);
- virEventUnlock();
- return -1;
- }
+ if (virEventCleanupTimeouts() < 0 ||
+ virEventCleanupHandles() < 0)
+ goto error;
+
+ if (!(fds = virEventMakePollFDs()) ||
+ virEventCalculateTimeout(&timeout) < 0)
+ goto error;
+ nfds = eventLoop.handlesCount;
virEventUnlock();
@@ -572,38 +569,31 @@ int virEventRunOnce(void) {
if (errno == EINTR) {
goto retry;
}
- VIR_FREE(fds);
- return -1;
+ goto error_unlocked;
}
virEventLock();
- if (virEventDispatchTimeouts() < 0) {
- VIR_FREE(fds);
- virEventUnlock();
- return -1;
- }
+ if (virEventDispatchTimeouts() < 0)
+ goto error;
if (ret > 0 &&
- virEventDispatchHandles(nfds, fds) < 0) {
- VIR_FREE(fds);
- virEventUnlock();
- return -1;
- }
- VIR_FREE(fds);
-
- if (virEventCleanupTimeouts() < 0) {
- virEventUnlock();
- return -1;
- }
+ virEventDispatchHandles(nfds, fds) < 0)
+ goto error;
- if (virEventCleanupHandles() < 0) {
- virEventUnlock();
- return -1;
- }
+ if (virEventCleanupTimeouts() < 0 ||
+ virEventCleanupHandles() < 0)
+ goto error;
eventLoop.running = 0;
virEventUnlock();
+ VIR_FREE(fds);
return 0;
+
+error:
+ virEventUnlock();
+error_unlocked:
+ VIR_FREE(fds);
+ return -1;
}
static void virEventHandleWakeup(int watch ATTRIBUTE_UNUSED,
--
1.6.0.6

47
libvirt-0.6.3-xml-attribute-escaping.patch Normal file
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@ -0,0 +1,47 @@
From 7f7a4403860f56d5a1ad65bfd16f5bf97a971d45 Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@redhat.com>
Date: Wed, 13 May 2009 16:19:59 +0000
Subject: [PATCH 1/1] * src/buf.c: avoid an XML attribute escaping bug #499791
daniel
---
src/buf.c | 16 +++++++++++++++-
1 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/src/buf.c b/src/buf.c
index cdcdac9..259175d 100644
--- a/src/buf.c
+++ b/src/buf.c
@@ -266,7 +266,7 @@ virBufferEscapeString(const virBufferPtr buf, const char *format, const char *st
return;
len = strlen(str);
- if (VIR_ALLOC_N(escaped, 5 * len + 1) < 0) {
+ if (VIR_ALLOC_N(escaped, 6 * len + 1) < 0) {
virBufferNoMemory(buf);
return;
}
@@ -290,6 +290,20 @@ virBufferEscapeString(const virBufferPtr buf, const char *format, const char *st
*out++ = 'm';
*out++ = 'p';
*out++ = ';';
+ } else if (*cur == '"') {
+ *out++ = '&';
+ *out++ = 'q';
+ *out++ = 'u';
+ *out++ = 'o';
+ *out++ = 't';
+ *out++ = ';';
+ } else if (*cur == '\'') {
+ *out++ = '&';
+ *out++ = 'a';
+ *out++ = 'p';
+ *out++ = 'o';
+ *out++ = 's';
+ *out++ = ';';
} else if ((*cur >= 0x20) || (*cur == '\n') || (*cur == '\t') ||
(*cur == '\r')) {
/*
--
1.6.0.6

14
libvirt.spec
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@ -55,7 +55,7 @@
Summary: Library providing a simple API virtualization
Name: libvirt
Version: 0.6.3
Release: 9%{?dist}%{?extra_release}
Release: 10%{?dist}%{?extra_release}
License: LGPLv2+
Group: Development/Libraries
Source: libvirt-%{version}.tar.gz
@ -74,6 +74,11 @@ Patch4: libvirt-0.6.3-enable-qemu-0-10-migration.patch
Patch5: libvirt-0.6.2-fix-nosource-label.patch
# Fix qemu argv detection with latest qemu (bz 501923)
Patch6: libvirt-0.6.3-fix-qemu-argv-detection-with-kvm-85.patch
# Fix XML attribute escaping (bz 499791)
Patch7: libvirt-0.6.3-xml-attribute-escaping.patch
# Fix serious event handling issues causing guests to be destroyed (bz 499698)
Patch8: libvirt-0.6.3-event-handling-1.patch
Patch9: libvirt-0.6.3-event-handling-2.patch
# Patches not for upstream.
@ -235,6 +240,9 @@ of recent versions of Linux (and other OSes).
%patch4 -p1
%patch5 -p1
%patch6 -p1
%patch7 -p1
%patch8 -p1
%patch9 -p1
%patch200 -p0
@ -565,6 +573,10 @@ fi
%endif
%changelog
* Thu May 21 2009 Mark McLoughlin <markmc@redhat.com> - 0.6.3-10.fc12
- Fix XML attribute escaping (bug #499791)
- Fix serious event handling issues causing guests to be destroyed (bug #499698)
* Thu May 21 2009 Mark McLoughlin <markmc@redhat.com> - 0.6.3-9.fc12
- Fix qemu argv detection with latest qemu (bug #501923)