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replaced err with warn and proper returns

This commit is contained in:
Bjorn Andersson 2006-06-05 14:02:42 +00:00
parent d4ecde9188
commit 5ff6d2228c
1 changed files with 19 additions and 10 deletions
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29
tun.c
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@ -48,8 +48,10 @@ open_tun()
if (tun_device == NULL)
tun_device = "/dev/net/tun";
if ((tun_fd = open(tun_device, O_RDWR)) < 0)
err(1, "open_tun: %s: %s", tun_device, strerror(errno));
if ((tun_fd = open(tun_device, O_RDWR)) < 0) {
warn("open_tun: %s: %s", tun_device, strerror(errno));
return 1;
}
bzero(&ifreq, sizeof(ifreq));
@ -63,11 +65,13 @@ open_tun()
return 0;
}
if (errno != EBUSY)
err(1, "open_tun: ioctl[TUNSETIFF]: %s", strerror(errno));
if (errno != EBUSY) {
warn("open_tun: ioctl[TUNSETIFF]: %s", strerror(errno));
return 1;
}
}
err(1, "open_tun: Couldn't set interface name.\n");
warn("open_tun: Couldn't set interface name.\n");
return 1;
}
@ -78,8 +82,10 @@ int
open_tun()
{
if (tun_device != NULL) {
if ((tun_fd = open(tun_device, O_RDWR)) < 0)
err(1, "open_tun: %s: %s", tun_device, strerror(errno));
if ((tun_fd = open(tun_device, O_RDWR)) < 0) {
warn("open_tun: %s: %s", tun_device, strerror(errno));
return 1;
}
} else {
char tun_name[50];
int i;
@ -96,7 +102,8 @@ open_tun()
break;
}
err(1, "open_tun: Failed to open tunneling device.");
warn("open_tun: Failed to open tunneling device.");
return 1;
}
return 0;
@ -114,8 +121,10 @@ close_tun()
int
write_tun(uint8_t *buf, int len)
{
if (write(tun_fd, buf, len) != len)
err(1, "write_tun: %s", strerror(errno));
if (write(tun_fd, buf, len) != len) {
warn("write_tun: %s", strerror(errno));
return 1;
}
return 0;
}