vde-2/src/kvde_switch/sockutils.c

   1 /* Copyright 2005 Renzo Davoli - VDE-2
   2  * Mattia Belletti (C) 2004.
   3  * Licensed under the GPLv2
   4  */
   5
   6 #include <stdio.h>
   7 #include <fcntl.h>
   8 #include <errno.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11 #include <stdlib.h>
  12 #include <stdint.h>
  13 #include <libgen.h>
  14 #include <syslog.h>
  15 #include <sys/types.h>
  16 #include <sys/ioctl.h>
  17 #include <sys/socket.h>
  18 #include <sys/un.h>
  19
  20 #include <config.h>
  21 #include <vde.h>
  22 #include <vdecommon.h>
  23
  24 #include "../vde_switch/switch.h"
  25 #include "consmgmt.h"
  26
  27 /* check to see if given unix socket is still in use; if it isn't, remove the
  28  *  * socket from the file system */
  29 int still_used(struct sockaddr_un *sun)
  30 {
  31         int test_fd, ret = 1;
  32
  33         if((test_fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0){
  34                 printlog(LOG_ERR,"socket %s",strerror(errno));
  35                 return(1);
  36         }
  37         if(connect(test_fd, (struct sockaddr *) sun, sizeof(*sun)) < 0){
  38                 if(errno == ECONNREFUSED){
  39                         if(unlink(sun->sun_path) < 0){
  40                                 printlog(LOG_ERR,"Failed to removed unused socket '%s': %s",
  41                                                 sun->sun_path,strerror(errno));
  42                         }
  43                         ret = 0;
  44                 }
  45                 else printlog(LOG_ERR,"connect %s",strerror(errno));
  46         }
  47         close(test_fd);
  48         return(ret);
  49 }
  50