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 */
still_used(struct sockaddr_un * sun)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
51