#include <stdbool.h>
#include <unistd.h>
-#include "util.h"
-#include "socket-util.h"
+#include "sd-netlink.h"
+
#include "formats-util.h"
-#include "refcnt.h"
#include "missing.h"
-
-#include "sd-netlink.h"
-#include "netlink-util.h"
#include "netlink-internal.h"
#include "netlink-types.h"
+#include "netlink-util.h"
+#include "refcnt.h"
+#include "socket-util.h"
+#include "util.h"
#define GET_CONTAINER(m, i) ((i) < (m)->n_containers ? (struct rtattr*)((uint8_t*)(m)->hdr + (m)->containers[i].offset) : NULL)
#define PUSH_CONTAINER(m, new) (m)->container_offsets[(m)->n_containers ++] = (uint8_t*)(new) - (uint8_t*)(m)->hdr;
#define RTA_TYPE(rta) ((rta)->rta_type & NLA_TYPE_MASK)
+#define RTA_FLAGS(rta) ((rta)->rta_type & ~NLA_TYPE_MASK)
int message_new_empty(sd_netlink *rtnl, sd_netlink_message **ret) {
sd_netlink_message *m;
return 0;
}
+int sd_netlink_message_set_flags(sd_netlink_message *m, uint16_t flags) {
+ assert_return(m, -EINVAL);
+ assert_return(flags, -EINVAL);
+
+ m->hdr->nlmsg_flags = flags;
+
+ return 0;
+}
+
int sd_netlink_message_is_broadcast(sd_netlink_message *m) {
assert_return(m, -EINVAL);
return 0;
}
+int sd_netlink_message_append_flag(sd_netlink_message *m, unsigned short type) {
+ size_t size;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_FLAG);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, NULL, 0);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
int sd_netlink_message_append_u8(sd_netlink_message *m, unsigned short type, uint8_t data) {
int r;
return 0;
}
-static int netlink_message_read_internal(sd_netlink_message *m, unsigned short type, void **data) {
+static int netlink_message_read_internal(sd_netlink_message *m, unsigned short type, void **data, bool *net_byteorder) {
struct netlink_attribute *attribute;
struct rtattr *rta;
assert_return(m, -EINVAL);
assert_return(m->sealed, -EPERM);
assert_return(data, -EINVAL);
- assert(m->n_containers <= RTNL_CONTAINER_DEPTH);
+ assert(m->n_containers < RTNL_CONTAINER_DEPTH);
assert(m->containers[m->n_containers].attributes);
assert(type < m->containers[m->n_containers].n_attributes);
*data = RTA_DATA(rta);
+ if (net_byteorder)
+ *net_byteorder = attribute->net_byteorder;
+
return RTA_PAYLOAD(rta);
}
if (r < 0)
return r;
- r = netlink_message_read_internal(m, type, &attr_data);
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
if (r < 0)
return r;
else if (strnlen(attr_data, r) >= (size_t) r)
if (r < 0)
return r;
- r = netlink_message_read_internal(m, type, &attr_data);
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
if (r < 0)
return r;
else if ((size_t) r < sizeof(uint8_t))
}
int sd_netlink_message_read_u16(sd_netlink_message *m, unsigned short type, uint16_t *data) {
- int r;
void *attr_data;
+ bool net_byteorder;
+ int r;
assert_return(m, -EINVAL);
if (r < 0)
return r;
- r = netlink_message_read_internal(m, type, &attr_data);
+ r = netlink_message_read_internal(m, type, &attr_data, &net_byteorder);
if (r < 0)
return r;
else if ((size_t) r < sizeof(uint16_t))
return -EIO;
- if (data)
- *data = *(uint16_t *) attr_data;
+ if (data) {
+ if (net_byteorder)
+ *data = be16toh(*(uint16_t *) attr_data);
+ else
+ *data = *(uint16_t *) attr_data;
+ }
return 0;
}
int sd_netlink_message_read_u32(sd_netlink_message *m, unsigned short type, uint32_t *data) {
- int r;
void *attr_data;
+ bool net_byteorder;
+ int r;
assert_return(m, -EINVAL);
if (r < 0)
return r;
- r = netlink_message_read_internal(m, type, &attr_data);
+ r = netlink_message_read_internal(m, type, &attr_data, &net_byteorder);
if (r < 0)
return r;
else if ((size_t)r < sizeof(uint32_t))
return -EIO;
- if (data)
- *data = *(uint32_t *) attr_data;
+ if (data) {
+ if (net_byteorder)
+ *data = be32toh(*(uint32_t *) attr_data);
+ else
+ *data = *(uint32_t *) attr_data;
+ }
return 0;
}
if (r < 0)
return r;
- r = netlink_message_read_internal(m, type, &attr_data);
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
if (r < 0)
return r;
else if ((size_t)r < sizeof(struct ether_addr))
if (r < 0)
return r;
- r = netlink_message_read_internal(m, type, &attr_data);
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
if (r < 0)
return r;
else if ((size_t)r < sizeof(struct ifa_cacheinfo))
if (r < 0)
return r;
- r = netlink_message_read_internal(m, type, &attr_data);
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
if (r < 0)
return r;
else if ((size_t)r < sizeof(struct in_addr))
if (r < 0)
return r;
- r = netlink_message_read_internal(m, type, &attr_data);
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
if (r < 0)
return r;
else if ((size_t)r < sizeof(struct in6_addr))
log_debug("rtnl: message parse - overwriting repeated attribute");
attributes[type].offset = (uint8_t *) rta - (uint8_t *) m->hdr;
+ attributes[type].nested = RTA_FLAGS(rta) & NLA_F_NESTED;
+ attributes[type].net_byteorder = RTA_FLAGS(rta) & NLA_F_NET_BYTEORDER;
}
container->attributes = attributes;
} else
return -EINVAL;
- r = netlink_message_read_internal(m, type_id, &container);
+ r = netlink_message_read_internal(m, type_id, &container, NULL);
if (r < 0)
return r;
else
assert_return(m->sealed, -EINVAL);
assert_return(m->n_containers > 0, -EINVAL);
- free(m->containers[m->n_containers].attributes);
- m->containers[m->n_containers].attributes = NULL;
+ m->containers[m->n_containers].attributes = mfree(m->containers[m->n_containers].attributes);
m->containers[m->n_containers].type_system = NULL;
m->n_containers --;
if (!m->sealed)
rtnl_message_seal(m);
- for (i = 1; i <= m->n_containers; i++) {
- free(m->containers[i].attributes);
- m->containers[i].attributes = NULL;
- }
+ for (i = 1; i <= m->n_containers; i++)
+ m->containers[i].attributes = mfree(m->containers[i].attributes);
m->n_containers = 0;
- if (m->containers[0].attributes) {
+ if (m->containers[0].attributes)
/* top-level attributes have already been parsed */
return 0;
- }
assert(m->hdr);