[libvirt] [PATCH V4 3/5] virsh: add 'sysrq' command

[Chunyan Liu]

All domainSendSysrq related API should be manageable from
the virsh command line. So, expose 'virsh sysrq' command.

Signed-off-by: Chunyan Liu <cyliu at suse.com>
---
Changes:
  * adjust code to follow general format and fix a memory leak

 tools/virsh-domain.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index 750411b..43fa1d8 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -12289,6 +12289,57 @@ cmdDomFSInfo(vshControl *ctl, const vshCmd *cmd)
     return ret >= 0;
 }
 
+/*
+ * "sysrq" command
+ */
+static const vshCmdInfo info_sysrq[] = {
+    {.name = "help",
+     .data = N_("Send SysRq key to the guest")
+    },
+    {.name = "desc",
+     .data = N_("Send SysRq key to the guest")
+    },
+    {.name = NULL}
+};
+
+static const vshCmdOptDef opts_sysrq[] = {
+    {.name = "domain",
+     .type = VSH_OT_DATA,
+     .flags = VSH_OFLAG_REQ,
+     .help = N_("domain name, id or uuid")
+    },
+    {.name = "key",
+     .type = VSH_OT_DATA,
+     .flags = VSH_OFLAG_REQ,
+     .help = N_("the SysRq key")
+    },
+    {.name = NULL}
+};
+
+static bool
+cmdSysrq(vshControl *ctl, const vshCmd *cmd)
+{
+    virDomainPtr dom;
+    bool ret = false;
+    const char *key = NULL;
+
+    if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
+        return false;
+
+    if (vshCommandOptStringReq(ctl, cmd, "key", &key) < 0)
+        goto cleanup;
+
+    if (virDomainSendSysrq(dom, key[0], 0) < 0)
+        goto cleanup;
+
+    ret = true;
+
+ cleanup:
+    virDomainFree(dom);
+    return ret;
+}
+
+
 const vshCmdDef domManagementCmds[] = {
     {.name = "attach-device",
      .handler = cmdAttachDevice,
@@ -12808,5 +12859,11 @@ const vshCmdDef domManagementCmds[] = {
      .info = info_vncdisplay,
      .flags = 0
     },
+    {.name = "sysrq",
+     .handler = cmdSysrq,
+     .opts = opts_sysrq,
+     .info = info_sysrq,
+     .flags = 0
+    },
     {.name = NULL}
 };
-- 
1.8.4.5