[libvirt] [PATCH 2/5] util: Introduce virPCIDeviceConfigOpenWrite
Only a handful of function need write access to the PCI config
space. Create a wrapper function for those so that we can
open it read only by default.
Signed-off-by: Ján Tomko <jtomko(a)redhat.com>
---
src/util/virpci.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/src/util/virpci.c b/src/util/virpci.c
index f4be907a10..c1dad1e69f 100644
--- a/src/util/virpci.c
+++ b/src/util/virpci.c
@@ -320,6 +320,12 @@ virPCIDeviceConfigOpen(virPCIDevicePtr dev, bool fatal)
return virPCIDeviceConfigOpenInternal(dev, fatal);
}
+static int
+virPCIDeviceConfigOpenWrite(virPCIDevicePtr dev)
+{
+ return virPCIDeviceConfigOpenInternal(dev, true);
+}
+
static void
virPCIDeviceConfigClose(virPCIDevicePtr dev, int cfgfd)
{
@@ -808,7 +814,7 @@ virPCIDeviceTrySecondaryBusReset(virPCIDevicePtr dev,
dev->name);
return -1;
}
- if ((parentfd = virPCIDeviceConfigOpen(parent, true)) < 0)
+ if ((parentfd = virPCIDeviceConfigOpenWrite(parent)) < 0)
goto out;
VIR_DEBUG("%s %s: doing a secondary bus reset", dev->id, dev->name);
@@ -957,7 +963,7 @@ virPCIDeviceReset(virPCIDevicePtr dev,
}
VIR_DEBUG("Resetting device %s", dev->name);
- if ((fd = virPCIDeviceConfigOpen(dev, true)) < 0)
+ if ((fd = virPCIDeviceConfigOpenWrite(dev)) < 0)
goto cleanup;
if (virPCIDeviceInit(dev, fd) < 0)
--
2.20.1