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qemu: Check the unsigned integer overflow

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As perhaps other hypervisor drivers use different capacity units,
do the checking in qemu driver instead of in conf/domain_conf.c.
This commit is contained in:
Osier Yang 2011-03-15 11:50:09 +08:00
parent 9bfde34661
commit acacced812
1 changed files with 15 additions and 0 deletions
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15
src/qemu/qemu_command.c
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@ -1934,6 +1934,13 @@ qemuBuildVideoDevStr(virDomainVideoDefPtr video,
virBufferVSprintf(&buf, ",id=%s", video->info.alias);
if (video->type == VIR_DOMAIN_VIDEO_TYPE_QXL) {
if (video->vram > (UINT_MAX / 1024)) {
qemuReportError(VIR_ERR_INVALID_ARG,
_("value for 'vram' must be less than '%u'"),
UINT_MAX / 1024);
goto error;
}
/* QEMU accepts bytes for vram_size. */
virBufferVSprintf(&buf, ",vram_size=%u", video->vram * 1024);
}
@ -4042,7 +4049,15 @@ qemuBuildCommandLine(virConnectPtr conn,
if (def->videos[0]->type == VIR_DOMAIN_VIDEO_TYPE_QXL) {
if (def->videos[0]->vram &&
qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
if (def->videos[0]->vram > (UINT_MAX / 1024)) {
qemuReportError(VIR_ERR_INVALID_ARG,
_("value for 'vram' must be less than '%u'"),
UINT_MAX / 1024);
goto error;
}
virCommandAddArg(cmd, "-global");
if (qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QXL_VGA))
virCommandAddArgFormat(cmd, "qxl-vga.vram_size=%u",
def->videos[0]->vram * 1024);