Add monitor_get_fd() command for fetching named fds

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/monitor.c b/monitor.c
index 817e4b7ed4..6ad2e14afd 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1774,6 +1774,30 @@ static void do_closefd(Monitor *mon, const char *fdname)
                    fdname);
 }
 
+int monitor_get_fd(Monitor *mon, const char *fdname)
+{
+    mon_fd_t *monfd;
+
+    LIST_FOREACH(monfd, &mon->fds, next) {
+        int fd;
+
+        if (strcmp(monfd->name, fdname) != 0) {
+            continue;
+        }
+
+        fd = monfd->fd;
+
+        /* caller takes ownership of fd */
+        LIST_REMOVE(monfd, next);
+        qemu_free(monfd->name);
+        qemu_free(monfd);
+
+        return fd;
+    }
+
+    return -1;
+}
+
 static const mon_cmd_t mon_cmds[] = {
 #include "qemu-monitor.h"
     { NULL, NULL, },