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Exit if tun device cannot be opened

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This commit is contained in:
Erik Ekman 2006-06-08 16:30:50 +00:00
parent 5264dbe2b1
commit 45af515f19
1 changed files with 6 additions and 4 deletions
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10
tun.c
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@ -15,6 +15,7 @@
*/ */
#include <stdio.h> #include <stdio.h>
#include <stdlib.h>
#include <unistd.h> #include <unistd.h>
#include <string.h> #include <string.h>
#include <errno.h> #include <errno.h>
@ -48,7 +49,7 @@ open_tun()
if ((tun_fd = open(tun_device, O_RDWR)) < 0) { if ((tun_fd = open(tun_device, O_RDWR)) < 0) {
warn("open_tun: %s: %s", tun_device, strerror(errno)); warn("open_tun: %s: %s", tun_device, strerror(errno));
return 0; exit(1);
} }
bzero(&ifreq, sizeof(ifreq)); bzero(&ifreq, sizeof(ifreq));
@ -70,7 +71,8 @@ open_tun()
} }
warn("open_tun: Couldn't set interface name.\n"); warn("open_tun: Couldn't set interface name.\n");
exit(1);
return 0; return 0;
} }
@ -86,7 +88,7 @@ open_tun()
if (tun_device != NULL) { if (tun_device != NULL) {
if ((tun_fd = open(tun_device, O_RDWR)) < 0) { if ((tun_fd = open(tun_device, O_RDWR)) < 0) {
warn("open_tun: %s: %s", tun_device, strerror(errno)); warn("open_tun: %s: %s", tun_device, strerror(errno));
return 0; exit(1);
} }
} else { } else {
for (i = 0; i < TUN_MAX_TRY; i++) { for (i = 0; i < TUN_MAX_TRY; i++) {
@ -102,7 +104,7 @@ open_tun()
} }
warn("open_tun: Failed to open tunneling device."); warn("open_tun: Failed to open tunneling device.");
return 0; exit(1);
} }
return 0; return 0;