54   int fd = socket(PF_BLUETOOTH, SOCK_RAW | SOCK_NONBLOCK, BTPROTO_HCI);  in btsocket_open_mgmt()  local
55   if (fd < 0) {  in btsocket_open_mgmt()
66   int ret = bind(fd, (struct sockaddr*)&addr, sizeof(addr));  in btsocket_open_mgmt()
69     close(fd);  in btsocket_open_mgmt()
73   return fd;  in btsocket_open_mgmt()
86   int fd = btsocket_open_mgmt(hci);  in get_vs_opcode()  local
89   if (fd < 0) {  in get_vs_opcode()
90     log::error("Failed to open mgmt channel for hci {}, error= {}.", hci, fd);  in get_vs_opcode()
105   writable[0].fd = fd;  in get_vs_opcode()
111       RETRY_ON_INTR(ret = write(fd, &ev, MGMT_PKT_HDR_SIZE + ev.len));  in get_vs_opcode()
114         close(fd);  in get_vs_opcode()
126     close(fd);  in get_vs_opcode()
132   fds[0].fd = fd;  in get_vs_opcode()
139         RETRY_ON_INTR(ret = read(fd, &cc_ev, sizeof(cc_ev)));  in get_vs_opcode()
142           close(fd);  in get_vs_opcode()
156               close(fd);  in get_vs_opcode()
167   close(fd);  in get_vs_opcode()