[libvirt] [PATCH] Default to qemu:///system if accessible

[Soren Hansen]

If no uri is passed to one of the virConnectOpen-ish calls, libvirt
attempts to autoprobe a sensible URI. Part of the current logic checks
for getuid() > 0, and if that check is succesful, a libvirtd daemon is
spawned. This patch replaces this check with a call to
access(LIBVIRTD_PRIV_UNIX_SOCKET, W_OK) so that users with access to the
qemu:///system UNIX socket connect to that one by default instead of
spawning a new libvirtd daemon.

Signed-off-by: Soren Hansen <soren at linux2go.dk>
---
 src/remote/remote_driver.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index a945710..17e6ead 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -1086,7 +1086,7 @@ remoteOpen (virConnectPtr conn,
     if (!conn->uri) {
         DEBUG0("Auto-probe remote URI");
 #ifndef __sun
-        if (getuid() > 0) {
+        if (access(LIBVIRTD_PRIV_UNIX_SOCKET, W_OK)) {
             DEBUG0("Auto-spawn user daemon instance");
             rflags |= VIR_DRV_OPEN_REMOTE_USER;
             if (!autostart ||
-- 
1.7.1