/* Privileged read loop */
static void privsep_read_loop(void)
{
while (1) {
struct privsep_command cmd;
int ret = readn(pfd, &cmd, sizeof(cmd));
if (ret <= 0) {
/* Error or EOF, give up */
if (ret < 0) {
flog(LOG_ERR, "Exiting, privsep_read_loop had readn error: %s", strerror(errno));
} else {
flog(LOG_ERR, "Exiting, privsep_read_loop had readn return 0 bytes");
}
}
if (ret != sizeof(cmd)) {
/* Short read, ignore */
return;
}
cmd.iface[IFNAMSIZ - 1] = '\0';
switch (cmd.type) {
case SET_INTERFACE_LINKMTU:
if (cmd.val < MIN_AdvLinkMTU || cmd.val > MAX_AdvLinkMTU) {
flog(LOG_ERR, "(privsep) %s: LinkMTU (%u) is not within the defined bounds, ignoring",
cmd.iface, cmd.val);
break;
}
ret = set_interface_var(cmd.iface, PROC_SYS_IP6_LINKMTU, "LinkMTU", cmd.val);
break;
case SET_INTERFACE_CURHLIM:
if (cmd.val < MIN_AdvCurHopLimit || cmd.val > MAX_AdvCurHopLimit) {
flog(LOG_ERR, "(privsep) %s: CurHopLimit (%u) is not within the defined bounds, ignoring",
cmd.iface, cmd.val);
break;
}
ret = set_interface_var(cmd.iface, PROC_SYS_IP6_CURHLIM, "CurHopLimit", cmd.val);
break;
case SET_INTERFACE_REACHTIME:
if (cmd.val < MIN_AdvReachableTime || cmd.val > MAX_AdvReachableTime) {
flog(LOG_ERR,
"(privsep) %s: BaseReachableTimer (%u) is not within the defined bounds, ignoring",
cmd.iface, cmd.val);
break;
}
ret =
set_interface_var(cmd.iface, PROC_SYS_IP6_BASEREACHTIME_MS, "BaseReachableTimer (ms)", cmd.val);
if (ret == 0)
break;
set_interface_var(cmd.iface, PROC_SYS_IP6_BASEREACHTIME, "BaseReachableTimer", cmd.val / 1000);
break;
case SET_INTERFACE_RETRANSTIMER:
if (cmd.val < MIN_AdvRetransTimer || cmd.val > MAX_AdvRetransTimer) {
flog(LOG_ERR, "(privsep) %s: RetransTimer (%u) is not within the defined bounds, ignoring",
cmd.iface, cmd.val);
break;
}
ret = set_interface_var(cmd.iface, PROC_SYS_IP6_RETRANSTIMER_MS, "RetransTimer (ms)", cmd.val);
if (ret == 0)
break;
set_interface_var(cmd.iface, PROC_SYS_IP6_RETRANSTIMER, "RetransTimer", cmd.val / 1000 * USER_HZ); /* XXX user_hz */
break;
default:
/* Bad command */
break;
}
}
}
/* Privileged read loop */
void
privsep_read_loop(void)
{
struct privsep_command cmd;
int ret;
while (1) {
ret = readn(pfd, &cmd, sizeof(cmd));
if (ret <= 0) {
/* Error or EOF, give up */
close(pfd);
_exit(0);
}
if (ret != sizeof(cmd)) {
/* Short read, ignore */
/* BEGIN 3061302357 y00188255 2013-6-28 Modified */
return;
/* END 3061302357 y00188255 2013-6-28 Modified */
}
cmd.iface[IFNAMSIZ-1] = '\0';
switch(cmd.type) {
case SET_INTERFACE_LINKMTU:
if (cmd.val < MIN_AdvLinkMTU || cmd.val > MAX_AdvLinkMTU) {
flog(LOG_ERR, "(privsep) %s: LinkMTU (%u) is not within the defined bounds, ignoring", cmd.iface, cmd.val);
break;
}
ret = set_interface_var(cmd.iface, PROC_SYS_IP6_LINKMTU, "LinkMTU", cmd.val);
break;
case SET_INTERFACE_CURHLIM:
if (cmd.val < MIN_AdvCurHopLimit || cmd.val > MAX_AdvCurHopLimit) {
flog(LOG_ERR, "(privsep) %s: CurHopLimit (%u) is not within the defined bounds, ignoring", cmd.iface, cmd.val);
break;
}
ret = set_interface_var(cmd.iface, PROC_SYS_IP6_CURHLIM, "CurHopLimit", cmd.val);
break;
case SET_INTERFACE_REACHTIME:
if (cmd.val < MIN_AdvReachableTime || cmd.val > MAX_AdvReachableTime) {
flog(LOG_ERR, "(privsep) %s: BaseReachableTimer (%u) is not within the defined bounds, ignoring", cmd.iface, cmd.val);
break;
}
ret = set_interface_var(cmd.iface, PROC_SYS_IP6_BASEREACHTIME_MS, "BaseReachableTimer (ms)", cmd.val);
if (ret == 0)
break;
set_interface_var(cmd.iface, PROC_SYS_IP6_BASEREACHTIME, "BaseReachableTimer", cmd.val / 1000);
break;
case SET_INTERFACE_RETRANSTIMER:
if (cmd.val < MIN_AdvRetransTimer || cmd.val > MAX_AdvRetransTimer) {
flog(LOG_ERR, "(privsep) %s: RetransTimer (%u) is not within the defined bounds, ignoring", cmd.iface, cmd.val);
break;
}
ret = set_interface_var(cmd.iface, PROC_SYS_IP6_RETRANSTIMER_MS, "RetransTimer (ms)", cmd.val);
if (ret == 0)
break;
set_interface_var(cmd.iface, PROC_SYS_IP6_RETRANSTIMER, "RetransTimer", cmd.val / 1000 * USER_HZ); /* XXX user_hz */
break;
default:
/* Bad command */
break;
}
}
}
