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ifupdown: add manual method for IPv6. Closes bug 2497.

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2010-10-29 02:42:20 +02:00
parent ec07420eb9
commit 66cb7bed33
1 changed files with 68 additions and 55 deletions
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123
networking/ifupdown.c
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@@ -164,7 +164,7 @@ static char *get_var(const char *id, size_t idlen, struct interface_defn_t *ifd)
return NULL;
}
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
static int count_netmask_bits(const char *dotted_quad)
{
// int result;
@@ -195,7 +195,7 @@ static int count_netmask_bits(const char *dotted_quad)
}
return result;
}
#endif
# endif
static char *parse(const char *command, struct interface_defn_t *ifd)
{
@@ -258,17 +258,17 @@ static char *parse(const char *command, struct interface_defn_t *ifd)
varvalue = get_var(command, nextpercent - command, ifd);
if (varvalue) {
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
/* "hwaddress <class> <address>":
* unlike ifconfig, ip doesnt want <class>
* (usually "ether" keyword). Skip it. */
if (strncmp(command, "hwaddress", 9) == 0) {
varvalue = skip_whitespace(skip_non_whitespace(varvalue));
}
#endif
# endif
addstr(&result, varvalue, strlen(varvalue));
} else {
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
/* Sigh... Add a special case for 'ip' to convert from
* dotted quad to bit count style netmasks. */
if (strncmp(command, "bnmask", 6) == 0) {
@@ -284,7 +284,7 @@ static char *parse(const char *command, struct interface_defn_t *ifd)
}
}
}
#endif
# endif
okay[opt_depth - 1] = 0;
}
@@ -329,56 +329,64 @@ static int execute(const char *command, struct interface_defn_t *ifd, execfn *ex
}
return 1;
}
#endif
#endif /* FEATURE_IFUPDOWN_IPV4 || FEATURE_IFUPDOWN_IPV6 */
#if ENABLE_FEATURE_IFUPDOWN_IPV6
static int FAST_FUNC loopback_up6(struct interface_defn_t *ifd, execfn *exec)
{
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
int result;
result = execute("ip addr add ::1 dev %iface%", ifd, exec);
result += execute("ip link set %iface% up", ifd, exec);
return ((result == 2) ? 2 : 0);
#else
# else
return execute("ifconfig %iface% add ::1", ifd, exec);
#endif
# endif
}
static int FAST_FUNC loopback_down6(struct interface_defn_t *ifd, execfn *exec)
{
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
return execute("ip link set %iface% down", ifd, exec);
#else
# else
return execute("ifconfig %iface% del ::1", ifd, exec);
#endif
# endif
}
static int FAST_FUNC manual_up_down6(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM)
{
return 1;
}
static int FAST_FUNC static_up6(struct interface_defn_t *ifd, execfn *exec)
{
int result;
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
result = execute("ip addr add %address%/%netmask% dev %iface%[[ label %label%]]", ifd, exec);
result += execute("ip link set[[ mtu %mtu%]][[ addr %hwaddress%]] %iface% up", ifd, exec);
/* Was: "[[ ip ....%gateway% ]]". Removed extra spaces w/o checking */
result += execute("[[ip route add ::/0 via %gateway%]]", ifd, exec);
#else
# else
result = execute("ifconfig %iface%[[ media %media%]][[ hw %hwaddress%]][[ mtu %mtu%]] up", ifd, exec);
result += execute("ifconfig %iface% add %address%/%netmask%", ifd, exec);
result += execute("[[route -A inet6 add ::/0 gw %gateway%]]", ifd, exec);
#endif
# endif
return ((result == 3) ? 3 : 0);
}
static int FAST_FUNC static_down6(struct interface_defn_t *ifd, execfn *exec)
{
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
return execute("ip link set %iface% down", ifd, exec);
#else
# else
return execute("ifconfig %iface% down", ifd, exec);
#endif
# endif
}
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
static int FAST_FUNC v4tunnel_up(struct interface_defn_t *ifd, execfn *exec)
{
int result;
@@ -394,14 +402,15 @@ static int FAST_FUNC v4tunnel_down(struct interface_defn_t * ifd, execfn * exec)
{
return execute("ip tunnel del %iface%", ifd, exec);
}
#endif
# endif
static const struct method_t methods6[] = {
#if ENABLE_FEATURE_IFUPDOWN_IP
{ "v4tunnel", v4tunnel_up, v4tunnel_down, },
#endif
{ "static", static_up6, static_down6, },
{ "loopback", loopback_up6, loopback_down6, },
# if ENABLE_FEATURE_IFUPDOWN_IP
{ "v4tunnel" , v4tunnel_up , v4tunnel_down , },
# endif
{ "static" , static_up6 , static_down6 , },
{ "manual" , manual_up_down6 , manual_up_down6 , },
{ "loopback" , loopback_up6 , loopback_down6 , },
};
static const struct address_family_t addr_inet6 = {
@@ -409,43 +418,46 @@ static const struct address_family_t addr_inet6 = {
ARRAY_SIZE(methods6),
methods6
};
#endif /* FEATURE_IFUPDOWN_IPV6 */
#if ENABLE_FEATURE_IFUPDOWN_IPV4
static int FAST_FUNC loopback_up(struct interface_defn_t *ifd, execfn *exec)
{
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
int result;
result = execute("ip addr add 127.0.0.1/8 dev %iface%", ifd, exec);
result += execute("ip link set %iface% up", ifd, exec);
return ((result == 2) ? 2 : 0);
#else
# else
return execute("ifconfig %iface% 127.0.0.1 up", ifd, exec);
#endif
# endif
}
static int FAST_FUNC loopback_down(struct interface_defn_t *ifd, execfn *exec)
{
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
int result;
result = execute("ip addr flush dev %iface%", ifd, exec);
result += execute("ip link set %iface% down", ifd, exec);
return ((result == 2) ? 2 : 0);
#else
# else
return execute("ifconfig %iface% 127.0.0.1 down", ifd, exec);
#endif
# endif
}
static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec)
{
int result;
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
result = execute("ip addr add %address%/%bnmask%[[ broadcast %broadcast%]] "
"dev %iface%[[ peer %pointopoint%]][[ label %label%]]", ifd, exec);
result += execute("ip link set[[ mtu %mtu%]][[ addr %hwaddress%]] %iface% up", ifd, exec);
result += execute("[[ip route add default via %gateway% dev %iface%]]", ifd, exec);
return ((result == 3) ? 3 : 0);
#else
# else
/* ifconfig said to set iface up before it processes hw %hwaddress%,
* which then of course fails. Thus we run two separate ifconfig */
result = execute("ifconfig %iface%[[ hw %hwaddress%]][[ media %media%]][[ mtu %mtu%]] up",
@@ -455,26 +467,26 @@ static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec)
ifd, exec);
result += execute("[[route add default gw %gateway% %iface%]]", ifd, exec);
return ((result == 3) ? 3 : 0);
#endif
# endif
}
static int FAST_FUNC static_down(struct interface_defn_t *ifd, execfn *exec)
{
int result;
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
result = execute("ip addr flush dev %iface%", ifd, exec);
result += execute("ip link set %iface% down", ifd, exec);
#else
# else
/* result = execute("[[route del default gw %gateway% %iface%]]", ifd, exec); */
/* Bringing the interface down deletes the routes in itself.
Otherwise this fails if we reference 'gateway' when using this from dhcp_down */
result = 1;
result += execute("ifconfig %iface% down", ifd, exec);
#endif
# endif
return ((result == 2) ? 2 : 0);
}
#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
struct dhcp_client_t {
const char *name;
const char *startcmd;
@@ -500,21 +512,21 @@ static const struct dhcp_client_t ext_dhcp_clients[] = {
"kill `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null",
},
};
#endif /* ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCPC */
# endif /* FEATURE_IFUPDOWN_EXTERNAL_DHCPC */
#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec)
{
unsigned i;
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
/* ip doesn't up iface when it configures it (unlike ifconfig) */
if (!execute("ip link set[[ addr %hwaddress%]] %iface% up", ifd, exec))
return 0;
#else
# else
/* needed if we have hwaddress on dhcp iface */
if (!execute("ifconfig %iface%[[ hw %hwaddress%]] up", ifd, exec))
return 0;
#endif
# endif
for (i = 0; i < ARRAY_SIZE(ext_dhcp_clients); i++) {
if (exists_execable(ext_dhcp_clients[i].name))
return execute(ext_dhcp_clients[i].startcmd, ifd, exec);
@@ -522,31 +534,31 @@ static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec)
bb_error_msg("no dhcp clients found");
return 0;
}
#elif ENABLE_UDHCPC
# elif ENABLE_UDHCPC
static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec)
{
#if ENABLE_FEATURE_IFUPDOWN_IP
# if ENABLE_FEATURE_IFUPDOWN_IP
/* ip doesn't up iface when it configures it (unlike ifconfig) */
if (!execute("ip link set[[ addr %hwaddress%]] %iface% up", ifd, exec))
return 0;
#else
# else
/* needed if we have hwaddress on dhcp iface */
if (!execute("ifconfig %iface%[[ hw %hwaddress%]] up", ifd, exec))
return 0;
#endif
# endif
return execute("udhcpc " UDHCPC_CMD_OPTIONS " -p /var/run/udhcpc.%iface%.pid "
"-i %iface%[[ -H %hostname%]][[ -c %client%]][[ -s %script%]][[ %udhcpc_opts%]]",
ifd, exec);
}
#else
# else
static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd UNUSED_PARAM,
execfn *exec UNUSED_PARAM)
{
return 0; /* no dhcp support */
}
#endif
# endif
#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
{
int result = 0;
@@ -569,7 +581,7 @@ static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
result += static_down(ifd, exec);
return ((result == 3) ? 3 : 0);
}
#elif ENABLE_UDHCPC
# elif ENABLE_UDHCPC
static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
{
int result;
@@ -586,13 +598,13 @@ static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
result += static_down(ifd, exec);
return ((result == 3) ? 3 : 0);
}
#else
# else
static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd UNUSED_PARAM,
execfn *exec UNUSED_PARAM)
{
return 0; /* no dhcp support */
}
#endif
# endif
static int FAST_FUNC manual_up_down(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM)
{
@@ -644,7 +656,8 @@ static const struct address_family_t addr_inet = {
methods
};
#endif /* if ENABLE_FEATURE_IFUPDOWN_IPV4 */
#endif /* FEATURE_IFUPDOWN_IPV4 */
/* Returns pointer to the next word, or NULL.
* In 1st case, advances *buf to the word after this one.