diff options
Diffstat (limited to 'package/libs/libnl-tiny/src/unl.c')
| -rw-r--r-- | package/libs/libnl-tiny/src/unl.c | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/package/libs/libnl-tiny/src/unl.c b/package/libs/libnl-tiny/src/unl.c deleted file mode 100644 index 33c020ea13..0000000000 --- a/package/libs/libnl-tiny/src/unl.c +++ /dev/null @@ -1,287 +0,0 @@ -#define _GNU_SOURCE -#include <netlink/netlink.h> -#include <netlink/genl/genl.h> -#include <netlink/genl/ctrl.h> -#include <netlink/genl/family.h> -#include <sys/types.h> -#include <net/if.h> -#include <unistd.h> -#include <fcntl.h> -#include <linux/nl80211.h> - -#include "unl.h" - -static int unl_init(struct unl *unl) -{ - unl->sock = nl_socket_alloc(); - if (!unl->sock) - return -1; - - return 0; -} - -int unl_genl_init(struct unl *unl, const char *family) -{ - memset(unl, 0, sizeof(*unl)); - - if (unl_init(unl)) - goto error_out; - - unl->hdrlen = NLMSG_ALIGN(sizeof(struct genlmsghdr)); - unl->family_name = strdup(family); - if (!unl->family_name) - goto error; - - if (genl_connect(unl->sock)) - goto error; - - if (genl_ctrl_alloc_cache(unl->sock, &unl->cache)) - goto error; - - unl->family = genl_ctrl_search_by_name(unl->cache, family); - if (!unl->family) - goto error; - - return 0; - -error: - unl_free(unl); -error_out: - return -1; -} - -void unl_free(struct unl *unl) -{ - if (unl->family_name) - free(unl->family_name); - - if (unl->sock) - nl_socket_free(unl->sock); - - if (unl->cache) - nl_cache_free(unl->cache); - - memset(unl, 0, sizeof(*unl)); -} - -static int -ack_handler(struct nl_msg *msg, void *arg) -{ - int *err = arg; - *err = 0; - return NL_STOP; -} - -static int -finish_handler(struct nl_msg *msg, void *arg) -{ - int *err = arg; - *err = 0; - return NL_SKIP; -} - -static int -error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg) -{ - int *ret = arg; - *ret = err->error; - return NL_SKIP; -} - -struct nl_msg *unl_genl_msg(struct unl *unl, int cmd, bool dump) -{ - struct nl_msg *msg; - int flags = 0; - - msg = nlmsg_alloc(); - if (!msg) - goto out; - - if (dump) - flags |= NLM_F_DUMP; - - genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, - genl_family_get_id(unl->family), 0, flags, cmd, 0); - -out: - return msg; -} - -int unl_genl_request(struct unl *unl, struct nl_msg *msg, unl_cb handler, void *arg) -{ - struct nl_cb *cb; - int err; - - cb = nl_cb_alloc(NL_CB_CUSTOM); - err = nl_send_auto_complete(unl->sock, msg); - if (err < 0) - goto out; - - err = 1; - nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); - nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); - nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); - if (handler) - nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, handler, arg); - - while (err > 0) - nl_recvmsgs(unl->sock, cb); - -out: - nlmsg_free(msg); - nl_cb_put(cb); - return err; -} - -static int request_single_cb(struct nl_msg *msg, void *arg) -{ - struct nl_msg **dest = arg; - - if (!*dest) { - nlmsg_get(msg); - *dest = msg; - } - return NL_SKIP; -} - -int unl_genl_request_single(struct unl *unl, struct nl_msg *msg, struct nl_msg **dest) -{ - *dest = NULL; - return unl_genl_request(unl, msg, request_single_cb, dest); -} - -static int no_seq_check(struct nl_msg *msg, void *arg) -{ - return NL_OK; -} - -void unl_genl_loop(struct unl *unl, unl_cb handler, void *arg) -{ - struct nl_cb *cb; - - cb = nl_cb_alloc(NL_CB_CUSTOM); - unl->loop_done = false; - nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); - nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, handler, arg); - - while (!unl->loop_done) - nl_recvmsgs(unl->sock, cb); - - nl_cb_put(cb); -} - -int unl_genl_multicast_id(struct unl *unl, const char *name) -{ - struct nlattr *tb[CTRL_ATTR_MCAST_GRP_MAX + 1]; - struct nlattr *groups, *group; - struct nl_msg *msg; - int ctrlid; - int ret = -1; - int rem; - - msg = nlmsg_alloc(); - if (!msg) - return -1; - - ctrlid = genl_ctrl_resolve(unl->sock, "nlctrl"); - genlmsg_put(msg, 0, 0, ctrlid, 0, 0, CTRL_CMD_GETFAMILY, 0); - NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, unl->family_name); - unl_genl_request_single(unl, msg, &msg); - if (!msg) - return -1; - - groups = unl_find_attr(unl, msg, CTRL_ATTR_MCAST_GROUPS); - if (!groups) - goto nla_put_failure; - - nla_for_each_nested(group, groups, rem) { - const char *gn; - - nla_parse(tb, CTRL_ATTR_MCAST_GRP_MAX, nla_data(group), - nla_len(group), NULL); - - if (!tb[CTRL_ATTR_MCAST_GRP_NAME] || - !tb[CTRL_ATTR_MCAST_GRP_ID]) - continue; - - gn = nla_data(tb[CTRL_ATTR_MCAST_GRP_NAME]); - if (strcmp(gn, name) != 0) - continue; - - ret = nla_get_u32(tb[CTRL_ATTR_MCAST_GRP_ID]); - break; - } - -nla_put_failure: - nlmsg_free(msg); - return ret; -} - -int unl_genl_subscribe(struct unl *unl, const char *name) -{ - int mcid; - - mcid = unl_genl_multicast_id(unl, name); - if (mcid < 0) - return mcid; - - return nl_socket_add_membership(unl->sock, mcid); -} - -int unl_genl_unsubscribe(struct unl *unl, const char *name) -{ - int mcid; - - mcid = unl_genl_multicast_id(unl, name); - if (mcid < 0) - return mcid; - - return nl_socket_drop_membership(unl->sock, mcid); -} - -int unl_nl80211_phy_lookup(const char *name) -{ - char buf[32]; - int fd, pos; - - snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/index", name); - - fd = open(buf, O_RDONLY); - if (fd < 0) - return -1; - pos = read(fd, buf, sizeof(buf) - 1); - if (pos < 0) { - close(fd); - return -1; - } - buf[pos] = '\0'; - close(fd); - return atoi(buf); -} - -int unl_nl80211_wdev_to_phy(struct unl *unl, int wdev) -{ - struct nl_msg *msg; - struct nlattr *attr; - int ret = -1; - - msg = unl_genl_msg(unl, NL80211_CMD_GET_INTERFACE, false); - if (!msg) - return -1; - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev); - if (unl_genl_request_single(unl, msg, &msg) < 0) - return -1; - - attr = unl_find_attr(unl, msg, NL80211_ATTR_WIPHY); - if (!attr) - goto out; - - ret = nla_get_u32(attr); -out: -nla_put_failure: - nlmsg_free(msg); - return ret; -} - - |