On 2012年06月09日 07:42, Eric Blake wrote:
If a user invokes 'virsh -c $URI', then within that batch shell,
they probably want 'connect' to revert to $URI rather than the
normal default URI you get for passing in NULL.
In particular, I had a setup where qemu:///session was failing,
but took 20 seconds to fail; since 'make -C tests check TESTS=virsh-all'
exercises the command 'virsh -c test:///default connect' without
arguments, it was locking up for 20 seconds trying to connect to
qemu, even though the testsuite specifically wants to limit itself
to the test:///default URI.
* tools/virsh.c (__vshControl): Add member.
(main, vshParseArgv): Set it.
(vshDeinit): Clean it up.
(cmdConnect): Use it to reopen to original connection.
---
This doesn't fix the root cause of this problem:
https://www.redhat.com/archives/libvir-list/2012-June/msg00237.html
but at least it makes my 'make check' runs faster while
I still investigate the root problem.
tools/virsh.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/virsh.c b/tools/virsh.c
index 0453b95..b28dc49 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -241,6 +241,7 @@ typedef struct __vshCmd {
*/
typedef struct __vshControl {
char *name; /* connection name */
+ char *default_name; /* -c or env-var default when name is NULL */
virConnectPtr conn; /* connection to hypervisor (MAY BE NULL) */
vshCmd *cmd; /* the current command */
char *cmdstr; /* string with command */
@@ -856,7 +857,7 @@ cmdConnect(vshControl *ctl, const vshCmd *cmd)
vshError(ctl, "%s", _("Please specify valid connection URI"));
return false;
}
- ctl->name = vshStrdup(ctl, name);
+ ctl->name = vshStrdup(ctl, name ? name : ctl->default_name);
ctl->useGetInfo = false;
ctl->useSnapshotOld = false;
@@ -19922,6 +19923,7 @@ vshDeinit(vshControl *ctl)
vshReadlineDeinit(ctl);
vshCloseLogFile(ctl);
VIR_FREE(ctl->name);
+ VIR_FREE(ctl->default_name);
if (ctl->conn) {
int ret;
if ((ret = virConnectClose(ctl->conn)) != 0) {
@@ -20176,7 +20178,8 @@ vshParseArgv(vshControl *ctl, int argc, char **argv)
ctl->timing = true;
break;
case 'c':
- ctl->name = vshStrdup(ctl, optarg);
+ VIR_FREE(ctl->default_name);
+ ctl->default_name = vshStrdup(ctl, optarg);
break;
case 'v':
if (STRNEQ_NULLABLE(optarg, "long")) {
@@ -20211,6 +20214,7 @@ vshParseArgv(vshControl *ctl, int argc, char **argv)
exit(EXIT_FAILURE);
}
}
+ ctl->name = vshStrdup(ctl, ctl->default_name);
if (argc> optind) {
/* parse command */
@@ -20268,7 +20272,7 @@ main(int argc, char **argv)
progname++;
if ((defaultConn = getenv("VIRSH_DEFAULT_CONNECT_URI"))) {
- ctl->name = vshStrdup(ctl, defaultConn);
+ ctl->default_name = vshStrdup(ctl, defaultConn);
}
if (!vshParseArgv(ctl, argc, argv)) {
Isn't the following patch enough for the fix? The problem is just
caused by ctl->name is freed even if no --name is specified for
command 'connect'. Or I missed something obviously?
diff --git a/tools/virsh.c b/tools/virsh.c
index abcfbff..0c8b44d 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -851,12 +851,15 @@ cmdConnect(vshControl *ctl, const vshCmd *cmd)
ctl->conn = NULL;
}
- VIR_FREE(ctl->name);
if (vshCommandOptString(cmd, "name", &name) < 0) {
vshError(ctl, "%s", _("Please specify valid connection URI"));
return false;
}
- ctl->name = vshStrdup(ctl, name);
+
+ if (name) {
+ VIR_FREE(ctl->name);
+ ctl->name = vshStrdup(ctl, name);
+ }
ctl->useGetInfo = false;
ctl->useSnapshotOld = false;
Regards,
Osier
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