| /* |
| * |
| * BlueZ - Bluetooth protocol stack for Linux |
| * |
| * Copyright (C) 2012 Intel Corporation. All rights reserved. |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <stddef.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| |
| #include "systemd.h" |
| |
| int sd_listen_fds(int unset_environment) |
| { |
| return 0; |
| } |
| |
| int sd_notify(int unset_environment, const char *state) |
| { |
| const char *sock; |
| struct sockaddr_un addr; |
| struct msghdr msghdr; |
| struct iovec iovec; |
| int fd, err; |
| |
| if (!state) { |
| err = -EINVAL; |
| goto done; |
| } |
| |
| sock = getenv("NOTIFY_SOCKET"); |
| if (!sock) |
| return 0; |
| |
| /* check for abstract socket or absolute path */ |
| if (sock[0] != '@' && sock[0] != '/') { |
| err = -EINVAL; |
| goto done; |
| } |
| |
| fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0); |
| if (fd < 0) { |
| err = -errno; |
| goto done; |
| } |
| |
| memset(&addr, 0, sizeof(addr)); |
| addr.sun_family = AF_UNIX; |
| strncpy(addr.sun_path, sock, sizeof(addr.sun_path) - 1); |
| |
| if (addr.sun_path[0] == '@') |
| addr.sun_path[0] = '\0'; |
| |
| memset(&iovec, 0, sizeof(iovec)); |
| iovec.iov_base = (char *) state; |
| iovec.iov_len = strlen(state); |
| |
| memset(&msghdr, 0, sizeof(msghdr)); |
| msghdr.msg_name = &addr; |
| msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + |
| strlen(sock); |
| |
| if (msghdr.msg_namelen > sizeof(struct sockaddr_un)) |
| msghdr.msg_namelen = sizeof(struct sockaddr_un); |
| |
| msghdr.msg_iov = &iovec; |
| msghdr.msg_iovlen = 1; |
| |
| if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) |
| err = -errno; |
| else |
| err = 1; |
| |
| close(fd); |
| |
| done: |
| if (unset_environment) |
| unsetenv("NOTIFY_SOCKET"); |
| |
| return err; |
| } |