Attachment 292182 Details for Bug 429327 – code to bind to an ipmi port

code to bind to an ipmi port

ipmi_port.c (text/plain), 2.68 KB, created by Jeff Moyer on 2008-01-18 18:25:10 UTC

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Creator: Jeff Moyer

Created: 2008-01-18 18:25:10 UTC

Size: 2.68 KB

patch

obsolete

>/*
> * ipmi_port.c
> * Allocate the RMCP port (623.) with a bind so that port manager
> * does not try to reuse it.  Only needed for Linux.
> *
> * Changes:
> *  05/18/07  Andy Cress - created
> */
>#include <stdio.h>
>#include <stdlib.h>
>#include <unistd.h>
>#include <fcntl.h>
>#include <netinet/in.h>
>#include <sys/types.h>
>#include <sys/socket.h>
>
>#define RMCP_PORT  623
>char *progver  = "0.1";        /* program version */
>char *progname    = "ipmi_port";   /* program name */
>static int sockfd = 0;
>static struct sockaddr_in _srcaddr;  
>
>static int mkdaemon(int fchdir, int fclose);
>static int mkdaemon(int fchdir, int fclose)
>{
>    int fdlimit = sysconf(_SC_OPEN_MAX);
>    int fd = 0;
> 
>    switch (fork()) {
>        case 0:  break;
>        case -1: return -1;
>        default: _exit(0);          /* exit the original process */
>    }
>    if (setsid() < 0) return -1;    /* shouldn't fail */
>    switch (fork()) {
>        case 0:  break;
>        case -1: return -1;
>        default: _exit(0);
>    }
>    if (fchdir) chdir("/");
>    if (fclose) {
>        /* Close stdin,stdout,stderr and replace them with /dev/null */
>        while (fd < fdlimit) close(fd++);
>        open("/dev/null",O_RDWR);
>        dup(0); dup(0);
>    }
>    return 0;
>}
>
>static int open_rmcp_port(int port);
>static int open_rmcp_port(int port)
>{
>    int rv;
>
>    /* Open a socket binding to the RMCP port */
>    rv = socket(AF_INET, SOCK_DGRAM, 0); 
>    if (rv < 0) return (rv);
>    else sockfd = rv;
>
>    memset(&_srcaddr, 0, sizeof(_srcaddr));
>    _srcaddr.sin_family = AF_INET;
>    _srcaddr.sin_port   = htons(port);
>    _srcaddr.sin_addr.s_addr = htonl(INADDR_ANY);
>    rv = bind(sockfd, (struct sockaddr *)&_srcaddr, sizeof(_srcaddr));
>    if (rv < 0) {
>         printf("bind(%d,%d) error, rv = %d\n",port,INADDR_ANY,rv);
>         close(sockfd);
>         return (rv);
>    }
>
>    return(rv);
>}
>
>
>int main(int argc, char **argv)
>{
>   int rv;
>   int c;
>   int background = 0;
>
>   while ((c = getopt(argc, argv, "b?")) != EOF) {
>        switch (c) {
>           case 'b':  background = 1; break;
>           default:
>              printf("Usage: %s [-b]   (-b means background)\n",progname);
>              exit(1);
>        }
>   }
>
>   rv = open_rmcp_port(RMCP_PORT);
>   if (rv != 0) printf("open_rmcp_port(%d) failed, rv = %d\n",RMCP_PORT,rv);
>   else printf("open_rmcp_port(%d) succeeded, sleeping\n",RMCP_PORT);
>
>   /* convert to a daemon if background */
>   if (background) {
>        rv = mkdaemon(1,1);
>        if (rv != 0) {
>           printf("%s: Cannot become daemon, rv = %d\n", progname,rv);
>           exit(1);
>        }
>   }
>
>   if (rv == 0) while(1)
>   {
>      sleep(60);  /*60 seconds*/
>   }
>   if (sockfd != 0) close(sockfd);
>   return(rv);
>}
>
>/*end ipmi_port.c */

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