[PATCH]virsh: track alias option and improve error message when option duplicate its alias

[Chen Hanxiao <chenhanxiao@xxxxxxxxxxxxxx>]

From: Chen Hanxiao <chenhanxiao@xxxxxxxxxxxxxx>

commit 2b172a8effa712aee97a21a64d2d02060958f9b2 allow
alias to expand to opt=value pair.
That means alias may not look alike since then.

With this patch we will also track alias.
If we type command with one option and another marked
as its alias, we will get an error message like:
error: option '--AA' duplicate its alias '--AAA'

Signed-off-by: Chen Hanxiao <chenhanxiao@xxxxxxxxxxxxxx>
---
 tools/virsh.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/virsh.c b/tools/virsh.c
index bad78c9..423e2d8 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -1101,11 +1101,18 @@ vshCmddefGetOption(vshControl *ctl, const vshCmdDef *cmd, const char *name,
                     if (VIR_STRDUP(*optstr, value + 1) < 0)
                         goto cleanup;
                 }
+                *opts_seen |= 1 << i;
                 continue;
             }
             if ((*opts_seen & (1 << i)) && opt->type != VSH_OT_ARGV) {
-                vshError(ctl, _("option --%s already seen"), name);
-                goto cleanup;
+                if ((*opts_seen & (1 << (i - 1)))) {
+                    vshError(ctl, _("option '--%s' duplicates its alias '--%s'"),
+                             cmd->opts[i].name, cmd->opts[i-1].name);
+                    goto cleanup;
+                } else {
+                    vshError(ctl, _("option '--%s' already seen"), name);
+                    goto cleanup;
+                }
             }
             *opts_seen |= 1 << i;
             *opt_index = i;
-- 
1.8.2.1

--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list