vde-2/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 #include <switch.h>
  20 #include <consmgmt.h>
  21
  22 /* check to see if given unix socket is still in use; if it isn't, remove the
  23  *  * socket from the file system */
  24 int still_used(struct sockaddr_un *sun)
  25 {
  26         int test_fd, ret = 1;
  27
  28         if((test_fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0){
  29                 printlog(LOG_ERR,"socket %s",strerror(errno));
  30                 return(1);
  31         }
  32         if(connect(test_fd, (struct sockaddr *) sun, sizeof(*sun)) < 0){
  33                 if(errno == ECONNREFUSED){
  34                         if(unlink(sun->sun_path) < 0){
  35                                 printlog(LOG_ERR,"Failed to removed unused socket '%s': %s",
  36                                                 sun->sun_path,strerror(errno));
  37                         }
  38                         ret = 0;
  39                 }
  40                 else printlog(LOG_ERR,"connect %s",strerror(errno));
  41         }
  42         close(test_fd);
  43         return(ret);
  44 }
  45