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Diffstat (limited to 'REORG.TODO/manual/examples/mkfsock.c')
-rw-r--r-- | REORG.TODO/manual/examples/mkfsock.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/REORG.TODO/manual/examples/mkfsock.c b/REORG.TODO/manual/examples/mkfsock.c new file mode 100644 index 0000000000..ffe1b46928 --- /dev/null +++ b/REORG.TODO/manual/examples/mkfsock.c @@ -0,0 +1,62 @@ +/* Example of Local-Namespace Sockets + Copyright (C) 1991-2017 Free Software Foundation, Inc. + + 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, if not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stddef.h> +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <sys/un.h> + +int +make_named_socket (const char *filename) +{ + struct sockaddr_un name; + int sock; + size_t size; + + /* Create the socket. */ + sock = socket (PF_LOCAL, SOCK_DGRAM, 0); + if (sock < 0) + { + perror ("socket"); + exit (EXIT_FAILURE); + } + + /* Bind a name to the socket. */ + name.sun_family = AF_LOCAL; + strncpy (name.sun_path, filename, sizeof (name.sun_path)); + name.sun_path[sizeof (name.sun_path) - 1] = '\0'; + + /* The size of the address is + the offset of the start of the filename, + plus its length (not including the terminating null byte). + Alternatively you can just do: + size = SUN_LEN (&name); + */ + size = (offsetof (struct sockaddr_un, sun_path) + + strlen (name.sun_path)); + + if (bind (sock, (struct sockaddr *) &name, size) < 0) + { + perror ("bind"); + exit (EXIT_FAILURE); + } + + return sock; +} |