| /* Create an AF_UNIX socket. |
| * |
| * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public Licence |
| * as published by the Free Software Foundation; either version |
| * 2 of the Licence, or (at your option) any later version. |
| */ |
| |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdbool.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| |
| #define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER) |
| |
| int main(int argc, char *argv[]) |
| { |
| struct sockaddr_un sun; |
| struct stat st; |
| size_t len, max; |
| int fd; |
| |
| if (argc != 2) { |
| fprintf(stderr, "Format: %s <socketpath>\n", argv[0]); |
| exit(2); |
| } |
| |
| max = sizeof(sun.sun_path); |
| len = strlen(argv[1]); |
| if (len >= max) { |
| fprintf(stderr, "Filename too long (max %zu)\n", max); |
| exit(2); |
| } |
| |
| fd = socket(AF_UNIX, SOCK_DGRAM, 0); |
| if (fd < 0) { |
| perror("socket"); |
| exit(1); |
| } |
| |
| memset(&sun, 0, sizeof(sun)); |
| sun.sun_family = AF_UNIX; |
| strcpy(sun.sun_path, argv[1]); |
| if (bind(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) { |
| perror("bind"); |
| exit(1); |
| } |
| |
| if (stat(argv[1], &st)) { |
| fprintf(stderr, "Couldn't stat socket after creation: %m\n"); |
| exit(1); |
| } |
| |
| exit(0); |
| } |