[libvirt] [PATCH 5/7] qemu: Don't unconditionally delete file in qemuOpenFileAs

[John Ferlan]

If we're expecting to create a file somewhere and that fails for some
reason during qemuOpenFileAs, then we unlink the path we're attempting
to create leaving no way to determine what the "existing" privileges,
protections, or labels are that caused the failure (open, change owner
and group, change mode, etc)

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/qemu/qemu_driver.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 0174c87..89b54c8 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -2899,6 +2899,9 @@ qemuOpenFileAs(uid_t fallback_uid, gid_t fallback_gid,
             vfoflags |= VIR_FILE_OPEN_FORCE_OWNER;
 
         if (stat(path, &sb) == 0) {
+            /* It already exists, we don't want to delete it on error */
+            need_unlink = false;
+
             is_reg = !!S_ISREG(sb.st_mode);
             /* If the path is regular file which exists
              * already and dynamic_ownership is off, we don't
-- 
2.1.0