July 2009 - Devel - Libvirt List Archives

[libvirt] [PATCH] Fix latent buffer overflow in qemudOpenMonitorUnix.

by Chris Lalancette

Fix a possible latent bug in qemudOpenMonitorUnix(). If the pathname to the monitor is very long (i.e. >= UNIX_MAX_PATH), then strncpy will *not* place a final \0 on the string (see "man strncpy"). NULL terminate the buffer to ensure we don't run off the end. Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu_driver.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 9fcc07a..4f173b7 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -910,6 +910,7 @@ qemudOpenMonitorUnix(virConnectPtr conn, memset(&addr, 0, sizeof(addr)); addr.sun_family = AF_UNIX; strncpy(addr.sun_path, monitor, sizeof(addr.sun_path)); + NUL_TERMINATE(addr.sun_path); do { ret = connect(monfd, (struct sockaddr *) &addr, sizeof(addr)); -- 1.6.0.6

15 years, 3 months

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[libvirt] [PATCH] Remove a stray semicolon in qemudDomainMigratePrepare2.

by Chris Lalancette

Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu_driver.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 83cbcf3..5f4b28b 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -6274,7 +6274,7 @@ qemudDomainMigratePrepare2 (virConnectPtr dconn, char migrateFrom [64]; const char *p; virDomainEventPtr event = NULL; - int ret = -1;; + int ret = -1; int internalret; *uri_out = NULL; -- 1.6.0.6

15 years, 3 months

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[libvirt] [PATCH] Workaround for broken GCC in Debian Etch

by Maximilian Wilhelm

Hi again! I missed one patch for working around a GCC bug in Debian Etch regarding limit definitions. Sorry for the unstripped git-format-patch outputs, I just realised this after pressing send :( (This seems to be not my day :)) Ciao Max -- Gib Dein Bestes. Dann übertriff Dich selbst!

15 years, 3 months

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[libvirt] [PATCH] Add some automatic dependency checks for configure to enable/disable {ESX, UML, LXC, Xen-Inotify}

by Maximilian Wilhelm

Hi! While building libVirt on an older Debian Etch machine, I stumbled across some automatic enabled drivers which stopped configure and make very badly due to missing header files, old libraries and stuff. So I decided to improve the automagic tests so others won't face the same problem again :) Find four patches attached. Ciao Max -- Fortschritt bedeutet, einen Schritt so zu machen, daß man den nächsten auch noch machen kann.

15 years, 3 months

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[libvirt] [PATCH] Remove ATTRIBUTE_UNUSED from flags to qemudDomainMigratePerform.

by Chris Lalancette

Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu_driver.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index eadb53f..9fcc07a 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -6424,7 +6424,7 @@ qemudDomainMigratePerform (virDomainPtr dom, const char *cookie ATTRIBUTE_UNUSED, int cookielen ATTRIBUTE_UNUSED, const char *uri, - unsigned long flags ATTRIBUTE_UNUSED, + unsigned long flags, const char *dname ATTRIBUTE_UNUSED, unsigned long resource) { -- 1.6.0.6

15 years, 3 months

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[libvirt] [PATCH] Add a comment about setting errors after qemudStartVMDaemon().

by Chris Lalancette

Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu_driver.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index fcfbfbc..eadb53f 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -6390,6 +6390,9 @@ qemudDomainMigratePrepare2 (virConnectPtr dconn, */ snprintf (migrateFrom, sizeof (migrateFrom), "tcp:0.0.0.0:%d", this_port); if (qemudStartVMDaemon (dconn, driver, vm, migrateFrom, -1) < 0) { + /* Note that we don't set an error here because qemudStartVMDaemon + * should have already done that. + */ if (!vm->persistent) { virDomainRemoveInactive(&driver->domains, vm); vm = NULL; -- 1.6.0.6

15 years, 3 months

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[libvirt] [PATCH] Fix an erroneous debug error to KVM; it should read QEMU/KVM.

by Chris Lalancette

Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu_driver.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 5f4b28b..fcfbfbc 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -6321,7 +6321,7 @@ qemudDomainMigratePrepare2 (virConnectPtr dconn, */ if (!STRPREFIX (uri_in, "tcp:")) { qemudReportError (dconn, NULL, NULL, VIR_ERR_INVALID_ARG, - "%s", _("only tcp URIs are supported for KVM migrations")); + "%s", _("only tcp URIs are supported for KVM/QEMU migrations")); goto cleanup; } -- 1.6.0.6

15 years, 3 months

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[libvirt] [PATCH] Convert a few stray users of free() in libvirt.c to VIR_FREE().

by Chris Lalancette

Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/libvirt.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/src/libvirt.c b/src/libvirt.c index 167359f..9fd864d 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -3020,7 +3020,7 @@ virDomainMigrate (virDomainPtr domain, ret = dconn->driver->domainMigratePrepare2 (dconn, &cookie, &cookielen, uri, &uri_out, flags, dname, bandwidth, dom_xml); - free (dom_xml); + VIR_FREE (dom_xml); if (ret == -1) goto done; if (uri == NULL && uri_out == NULL) { virLibConnError (conn, VIR_ERR_INTERNAL_ERROR, @@ -3062,8 +3062,8 @@ virDomainMigrate (virDomainPtr domain, } done: - free (uri_out); - free (cookie); + VIR_FREE (uri_out); + VIR_FREE (cookie); return ddomain; error: -- 1.6.0.6

15 years, 3 months

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[libvirt] [PATCH] Use virGetHostname instead of gethostname.

by Chris Lalancette

Fix up qemudDomainMigratePrepare2 to use virGetHostname instead of gethostname. Besides the fact that virGetHostname is far more clever, there was a latent bug in the handling that could cause a buffer overflow on a very long hostname. Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu_driver.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index cee2164..83cbcf3 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -6270,11 +6270,12 @@ qemudDomainMigratePrepare2 (virConnectPtr dconn, virDomainDefPtr def = NULL; virDomainObjPtr vm = NULL; int this_port; - char hostname [HOST_NAME_MAX+1]; + char *hostname; char migrateFrom [64]; const char *p; virDomainEventPtr event = NULL; int ret = -1;; + int internalret; *uri_out = NULL; @@ -6300,14 +6301,16 @@ qemudDomainMigratePrepare2 (virConnectPtr dconn, if (port == QEMUD_MIGRATION_NUM_PORTS) port = 0; /* Get hostname */ - if (gethostname (hostname, HOST_NAME_MAX+1) == -1) { + if ((hostname = virGetHostname()) == NULL) { virReportSystemError (dconn, errno, "%s", _("failed to determine host name")); goto cleanup; } /* Caller frees */ - if (virAsprintf(uri_out, "tcp:%s:%d", hostname, this_port) < 0) { + internalret = virAsprintf(uri_out, "tcp:%s:%d", hostname, this_port); + VIR_FREE(hostname); + if (internalret < 0) { virReportOOMError (dconn); goto cleanup; } -- 1.6.0.6

15 years, 3 months

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[libvirt] [PATCH] Fix up a minor indentation issue with virDomainMigratePrepare.

by Chris Lalancette

Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/libvirt.c | 14 +++++++------- 1 files changed, 7 insertions(+), 7 deletions(-) diff --git a/src/libvirt.c b/src/libvirt.c index 7ecf1ec..167359f 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -3078,13 +3078,13 @@ error: */ int virDomainMigratePrepare (virConnectPtr dconn, - char **cookie, - int *cookielen, - const char *uri_in, - char **uri_out, - unsigned long flags, - const char *dname, - unsigned long bandwidth) + char **cookie, + int *cookielen, + const char *uri_in, + char **uri_out, + unsigned long flags, + const char *dname, + unsigned long bandwidth) { VIR_DEBUG("dconn=%p, cookie=%p, cookielen=%p, uri_in=%s, uri_out=%p, " "flags=%lu, dname=%s, bandwidth=%lu", dconn, cookie, cookielen, -- 1.6.0.6

15 years, 3 months

2
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Devel July 2009