diff options
Diffstat (limited to 'package/mopd/src/common/loop-linux2.c')
| -rw-r--r-- | package/mopd/src/common/loop-linux2.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/package/mopd/src/common/loop-linux2.c b/package/mopd/src/common/loop-linux2.c new file mode 100644 index 000000000..04654510c --- /dev/null +++ b/package/mopd/src/common/loop-linux2.c @@ -0,0 +1,162 @@ +/* + * Copyright (c) 1993-95 Mats O Jansson. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Mats O Jansson. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef LINT +static char rcsid[] = "$Id: loop-linux2.c,v 1.1.1.1 2001/06/24 19:33:53 atp Exp $"; +#endif + +#include <stdlib.h> +#include <strings.h> +#include <unistd.h> +#if defined(__bsdi__) || defined(__FreeBSD__) +#include <sys/time.h> +#endif +#include <sys/ioctl.h> +#include <sys/errno.h> + +#include "os.h" +#include "common.h" +#include "mopdef.h" + +int +mopOpenRC(p, trans) + struct if_info *p; + int trans; +{ +#ifndef NORC + return (*(p->iopen))(p->if_name, + O_RDWR, + MOP_K_PROTO_RC, + trans); +#else + return -1; +#endif +} + +int +mopOpenDL(p, trans) + struct if_info *p; + int trans; +{ +#ifndef NODL + return (*(p->iopen))(p->if_name, + O_RDWR, + MOP_K_PROTO_DL, + trans); +#else + return -1; +#endif +} + +void +mopReadRC() +{ +} + +void +mopReadDL() +{ +} + +/* + * The list of all interfaces that are being listened to. loop() + * "selects" on the descriptors in this list. + */ +struct if_info *iflist; + +void mopProcess __P((struct if_info *, u_char *)); + +/* + * Loop indefinitely listening for MOP requests on the + * interfaces in 'iflist'. + */ +void +Loop() +{ + u_char *buf, *bp, *ep; + int cc; + fd_set fds, listeners; + int bufsize = 1100, maxfd =0; + struct if_info *ii; + + + if (iflist == 0) { + syslog(LOG_ERR, "no interfaces"); + exit(0); + } + + buf = (u_char *) malloc((unsigned) bufsize); + + if (buf == 0) { + syslog(LOG_ERR, "malloc: %m"); + exit(0); + } + /* + * Find the highest numbered file descriptor for select(). + * Initialize the set of descriptors to listen to. + */ + FD_ZERO(&fds); + for (ii = iflist; ii; ii = ii->next) { + if (ii->fd != -1) { + FD_SET(ii->fd, &fds); + if (ii->fd > maxfd) + maxfd = ii->fd; + } + } + while (1) { + listeners = fds; + if (select(maxfd + 1, &listeners, (fd_set *) 0, + (fd_set *) 0, (struct timeval *) 0) < 0) { + syslog(LOG_ERR, "select: %m"); + exit(0); + } + for (ii = iflist; ii; ii = ii->next) { + if (ii->fd != -1) { + if (!FD_ISSET(ii->fd, &listeners)) + continue; + } + again: + cc = read(ii->fd, (char *) buf, bufsize); + /* Don't choke when we get ptraced */ + if (cc < 0 && errno == EINTR) + goto again; + + bp = buf; + ep = bp + cc; + +if(bp < ep) + { + mopProcess(ii,buf); + } + +} + +} +} + |