wmi-1.3.16 from opsview.com
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/* -*- c-file-style: "linux" -*-
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*
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* Try creating a Unix-domain socket, opening it, and reading from it.
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* The POSIX name for these is AF_LOCAL/PF_LOCAL.
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*
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* This is used by the Samba autoconf scripts to detect systems which
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* don't have Unix-domain sockets, such as (probably) VMS, or systems
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* on which they are broken under some conditions, such as RedHat 7.0
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* (unpatched). We can't build WinBind there at the moment.
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*
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* Coding standard says to always use exit() for this, not return, so
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* we do.
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*
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* Martin Pool <mbp@samba.org>, June 2000. */
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/* TODO: Look for AF_LOCAL (most standard), AF_UNIX, and AF_FILE. */
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#include <stdio.h>
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#ifdef HAVE_SYS_UN_H
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# include <sys/un.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#if HAVE_SYS_WAIT_H
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# include <sys/wait.h>
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#endif
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#if HAVE_ERRNO_DECL
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# include <errno.h>
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#else
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extern int errno;
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#endif
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static int bind_socket(char const *filename)
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{
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int sock_fd;
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struct sockaddr_un name;
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size_t size;
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/* Create the socket. */
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if ((sock_fd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) {
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perror ("socket(PF_LOCAL, SOCK_STREAM)");
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exit(1);
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}
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/* Bind a name to the socket. */
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name.sun_family = AF_LOCAL;
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strncpy(name.sun_path, filename, sizeof (name.sun_path));
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/* The size of the address is
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the offset of the start of the filename,
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plus its length,
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plus one for the terminating null byte.
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Alternatively you can just do:
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size = SUN_LEN (&name);
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*/
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size = SUN_LEN(&name);
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/* XXX: This probably won't work on unfriendly libcs */
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if (bind(sock_fd, (struct sockaddr *) &name, size) < 0) {
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perror ("bind");
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exit(1);
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}
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return sock_fd;
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}
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int main(void)
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{
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int sock_fd;
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int kid;
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char const *filename = "conftest.unixsock.sock";
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/* abolish hanging */
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alarm(15); /* secs */
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if ((sock_fd = bind_socket(filename)) < 0)
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exit(1);
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/* the socket will be deleted when autoconf cleans up these
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files. */
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exit(0);
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}
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