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Annotation of 43BSD/ingres/source/support/initsocket.c, revision 1.1

1.1     ! root        1: # include      <stdio.h>
        !             2: # include      <sys/types.h>
        !             3: # include      <sys/socket.h>
        !             4: # include      <sys/ioctl.h>
        !             5: # include      <netinet/in.h>
        !             6: # include      <netdb.h>
        !             7: # include      <signal.h>
        !             8: # include      <sccs.h>
        !             9: 
        !            10: SCCSID(@(#)initsocket.c        8.1     12/31/84)
        !            11: 
        !            12: /*
        !            13: ** init_socket
        !            14: ** initilize the socket to the socket server
        !            15: */
        !            16: init_socket()
        !            17: {
        !            18:        register        int     from_socket;    /* file descriptor to attach to socket server */
        !            19:        int     to_ioctl = 1;                   /* used in ioctl call */
        !            20:        struct  sockaddr_in     addr;           /* address where socket server is */
        !            21:        char    hostname[BUFSIZ];               /* hostname */
        !            22:        struct  servent         *server;
        !            23:        struct  hostent         *myhost;
        !            24:        auto    int             len;
        !            25:        extern  int             errno;
        !            26: 
        !            27:        if ( (len = fork()) != 0 )
        !            28:        {
        !            29: # ifdef        DEBUG
        !            30:                printf("lock driver becomes %d\n",len);
        !            31: # endif        DEBUG
        !            32:                if ( len == -1 )
        !            33:                {
        !            34:                        perror("ingres lock driver, fork");
        !            35:                        exit(errno);
        !            36:                }
        !            37:                exit(0);
        !            38:        }
        !            39:        if ( (from_socket = socket(AF_INET,SOCK_STREAM,0)) == -1 )
        !            40:        {
        !            41: # ifdef        DEBUG
        !            42:                perror("INIT_S socket");
        !            43: # endif        DEBUG
        !            44:                exit(errno);
        !            45:        }
        !            46:        len = BUFSIZ;
        !            47:        gethostname(hostname,&len);
        !            48: 
        !            49:        if ( (server = getservbyname("ingreslock",(char *)0)) == 0 )
        !            50:                exit(errno);
        !            51: 
        !            52:        if ( (myhost = gethostbyname(hostname)) == 0 )
        !            53:                exit(errno);
        !            54:        bzero((char *) &addr,sizeof (addr));
        !            55:        bcopy(myhost->h_addr,(char *)&addr.sin_addr,myhost->h_length);
        !            56:        addr.sin_family = AF_INET;
        !            57:        addr.sin_port = server->s_port;
        !            58:        len = sizeof (addr);
        !            59:        if ( bind(from_socket,&addr,len) == -1 )
        !            60:        {
        !            61: # ifdef        DEBUG
        !            62:                perror("INIT_S bind, assuming driver already running");
        !            63: # endif        DEBUG
        !            64:                exit(0);
        !            65:        }
        !            66: 
        !            67:        if ( listen(from_socket,10) == -1 )
        !            68:        {
        !            69:                perror("Ingres lock, can't listen on port");
        !            70:                exit(errno);
        !            71:        }
        !            72:        ioctl(from_socket,FIONBIO,&to_ioctl);
        !            73:        return ( from_socket );
        !            74: }/* init_socket */

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