static void do_getfd(Monitor *mon, const QDict *qdict) { const char *fdname = qdict_get_str(qdict, "fdname"); mon_fd_t *monfd; int fd; fd = qemu_chr_get_msgfd(mon->chr); if (fd == -1) { monitor_printf(mon, "getfd: no file descriptor supplied via SCM_RIGHTS\n"); return; } if (qemu_isdigit(fdname[0])) { monitor_printf(mon, "getfd: monitor names may not begin with a number\n"); return; } fd = dup(fd); if (fd == -1) { monitor_printf(mon, "Failed to dup() file descriptor: %s\n", strerror(errno)); return; } LIST_FOREACH(monfd, &mon->fds, next) { if (strcmp(monfd->name, fdname) != 0) { continue; } close(monfd->fd); monfd->fd = fd; return; } monfd = qemu_mallocz(sizeof(mon_fd_t)); monfd->name = qemu_strdup(fdname); monfd->fd = fd; LIST_INSERT_HEAD(&mon->fds, monfd, next); }