diff options
Diffstat (limited to 'libc/manual/examples/mkfsock.c')
-rw-r--r-- | libc/manual/examples/mkfsock.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/libc/manual/examples/mkfsock.c b/libc/manual/examples/mkfsock.c new file mode 100644 index 000000000..615ecd868 --- /dev/null +++ b/libc/manual/examples/mkfsock.c @@ -0,0 +1,46 @@ +#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, + plus one for the terminating null byte. + Alternatively you can just do: + size = SUN_LEN (&name); + */ + size = (offsetof (struct sockaddr_un, sun_path) + + strlen (name.sun_path) + 1); + + if (bind (sock, (struct sockaddr *) &name, size) < 0) + { + perror ("bind"); + exit (EXIT_FAILURE); + } + + return sock; +} |