diff options
Diffstat (limited to 'examples/genl-family-get.c')
| -rw-r--r-- | examples/genl-family-get.c | 113 |
1 files changed, 105 insertions, 8 deletions
diff --git a/examples/genl-family-get.c b/examples/genl-family-get.c index 3e741cb..00f601c 100644 --- a/examples/genl-family-get.c +++ b/examples/genl-family-get.c @@ -5,15 +5,43 @@ #include <libmnl/libmnl.h> #include <linux/genetlink.h> +static int parse_mc_grps_cb(const struct nlattr *attr, void *data) +{ + const struct nlattr **tb = (const struct nlattr **)data; + int type = mnl_attr_get_type(attr); + + if (mnl_attr_type_invalid(attr, CTRL_ATTR_MCAST_GRP_MAX) < 0) { + perror("mnl_attr_type_invalid"); + return MNL_CB_ERROR; + } + + switch(type) { + case CTRL_ATTR_MCAST_GRP_ID: + if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + case CTRL_ATTR_MCAST_GRP_NAME: + if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + } + tb[type] = attr; + return MNL_CB_OK; +} + static void parse_genl_mc_grps(struct nlattr *nested) { struct nlattr *pos; int len; - mnl_attr_for_each_nested(pos, nested, len) { - struct nlattr *tb[CTRL_ATTR_MCAST_GRP_MAX+1]; + mnl_attr_for_each_nested(pos, nested) { + struct nlattr *tb[CTRL_ATTR_MCAST_GRP_MAX+1] = {}; - mnl_attr_parse_nested(pos, tb, CTRL_ATTR_MCAST_GRP_MAX); + mnl_attr_parse_nested(pos, parse_mc_grps_cb, tb); if (tb[CTRL_ATTR_MCAST_GRP_ID]) { printf("id-0x%x ", mnl_attr_get_u32(tb[CTRL_ATTR_MCAST_GRP_ID])); @@ -26,15 +54,41 @@ static void parse_genl_mc_grps(struct nlattr *nested) } } +static int parse_family_ops_cb(const struct nlattr *attr, void *data) +{ + const struct nlattr **tb = (const struct nlattr **)data; + int type = mnl_attr_get_type(attr); + + if (mnl_attr_type_invalid(attr, CTRL_ATTR_OP_MAX) < 0) { + perror("mnl_attr_type_invalid"); + return MNL_CB_ERROR; + } + + switch(type) { + case CTRL_ATTR_OP_ID: + if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + case CTRL_ATTR_OP_MAX: + break; + default: + return MNL_CB_OK; + } + tb[type] = attr; + return MNL_CB_OK; +} + static void parse_genl_family_ops(struct nlattr *nested) { struct nlattr *pos; int len; - mnl_attr_for_each_nested(pos, nested, len) { - struct nlattr *tb[CTRL_ATTR_OP_MAX+1]; + mnl_attr_for_each_nested(pos, nested) { + struct nlattr *tb[CTRL_ATTR_OP_MAX+1] = {}; - mnl_attr_parse_nested(pos, tb, CTRL_ATTR_OP_MAX); + mnl_attr_parse_nested(pos, parse_family_ops_cb, tb); if (tb[CTRL_ATTR_OP_ID]) { printf("id-0x%x ", mnl_attr_get_u32(tb[CTRL_ATTR_OP_ID])); @@ -46,12 +100,55 @@ static void parse_genl_family_ops(struct nlattr *nested) } } +static int data_attr_cb(const struct nlattr *attr, void *data) +{ + const struct nlattr **tb = (const struct nlattr **)data; + int type = mnl_attr_get_type(attr); + + if (mnl_attr_type_invalid(attr, CTRL_ATTR_MAX) < 0) { + perror("mnl_attr_type_invalid"); + return MNL_CB_ERROR; + } + + switch(type) { + case CTRL_ATTR_FAMILY_NAME: + if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + case CTRL_ATTR_FAMILY_ID: + if (mnl_attr_validate(attr, MNL_TYPE_U16) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + case CTRL_ATTR_VERSION: + case CTRL_ATTR_HDRSIZE: + case CTRL_ATTR_MAXATTR: + if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + case CTRL_ATTR_OPS: + case CTRL_ATTR_MCAST_GROUPS: + if (mnl_attr_validate(attr, MNL_TYPE_NESTED) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + } + tb[type] = attr; + return MNL_CB_OK; +} + static int data_cb(const struct nlmsghdr *nlh, void *data) { - struct nlattr *tb[CTRL_ATTR_MAX+1]; + struct nlattr *tb[CTRL_ATTR_MAX+1] = {}; struct genlmsghdr *genl = mnl_nlmsg_get_data(nlh); - mnl_attr_parse_at_offset(nlh, sizeof(*genl), tb, CTRL_ATTR_MAX); + mnl_attr_parse(nlh, sizeof(*genl), data_attr_cb, tb); if (tb[CTRL_ATTR_FAMILY_NAME]) { printf("name=%s\t", mnl_attr_get_str(tb[CTRL_ATTR_FAMILY_NAME])); |