#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
-
+#include <stdbool.h>
+#include <linux/netlink.h>
+
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
-#include <netlink/genl/ctrl.h>
+#include <netlink/genl/ctrl.h>
#include <netlink/msg.h>
#include <netlink/attr.h>
#include "nl80211.h"
#include "iw.h"
-#include "version.h"
-
-#ifndef CONFIG_LIBNL20
-/* libnl 2.0 compatibility code */
+/* libnl 1.x compatibility code */
+#if !defined(CONFIG_LIBNL20) && !defined(CONFIG_LIBNL30)
static inline struct nl_handle *nl_socket_alloc(void)
{
return nl_handle_alloc();
nl_handle_destroy(h);
}
-static inline int __genl_ctrl_alloc_cache(struct nl_sock *h, struct nl_cache **cache)
+static inline int nl_socket_set_buffer_size(struct nl_sock *sk,
+ int rxbuf, int txbuf)
{
- struct nl_cache *tmp = genl_ctrl_alloc_cache(h);
- if (!tmp)
- return -ENOMEM;
- *cache = tmp;
- return 0;
+ return nl_set_buffer_size(sk, rxbuf, txbuf);
}
-#define genl_ctrl_alloc_cache __genl_ctrl_alloc_cache
-#endif /* CONFIG_LIBNL20 */
+#endif /* CONFIG_LIBNL20 && CONFIG_LIBNL30 */
-static int debug = 0;
+int iw_debug = 0;
static int nl80211_init(struct nl80211_state *state)
{
goto out_handle_destroy;
}
- if (genl_ctrl_alloc_cache(state->nl_sock, &state->nl_cache)) {
- fprintf(stderr, "Failed to allocate generic netlink cache.\n");
- err = -ENOMEM;
- goto out_handle_destroy;
- }
+ nl_socket_set_buffer_size(state->nl_sock, 8192, 8192);
- state->nl80211 = genl_ctrl_search_by_name(state->nl_cache, "nl80211");
- if (!state->nl80211) {
+ /* try to set NETLINK_EXT_ACK to 1, ignoring errors */
+ err = 1;
+ setsockopt(nl_socket_get_fd(state->nl_sock), SOL_NETLINK,
+ NETLINK_EXT_ACK, &err, sizeof(err));
+
+ state->nl80211_id = genl_ctrl_resolve(state->nl_sock, "nl80211");
+ if (state->nl80211_id < 0) {
fprintf(stderr, "nl80211 not found.\n");
err = -ENOENT;
- goto out_cache_free;
+ goto out_handle_destroy;
}
return 0;
- out_cache_free:
- nl_cache_free(state->nl_cache);
out_handle_destroy:
nl_socket_free(state->nl_sock);
return err;
static void nl80211_cleanup(struct nl80211_state *state)
{
- genl_family_put(state->nl80211);
- nl_cache_free(state->nl_cache);
nl_socket_free(state->nl_sock);
}
-__COMMAND(NULL, NULL, NULL, 0, 0, 0, CIB_NONE, NULL);
-__COMMAND(NULL, NULL, NULL, 1, 0, 0, CIB_NONE, NULL);
-
static int cmd_size;
-static void usage(const char *argv0)
+extern struct cmd *__start___cmd[];
+extern struct cmd *__stop___cmd;
+
+#define for_each_cmd(_cmd, i) \
+ for (i = 0; i < &__stop___cmd - __start___cmd; i++) \
+ if ((_cmd = __start___cmd[i]))
+
+
+static void __usage_cmd(const struct cmd *cmd, char *indent, bool full)
{
- struct cmd *cmd;
-
- fprintf(stderr, "Usage:\t%s [options] command\n", argv0);
- fprintf(stderr, "Options:\n");
- fprintf(stderr, "\t--debug\t\tenable netlink debugging\n");
- fprintf(stderr, "\t--version\tshow version\n");
- fprintf(stderr, "Commands:\n");
- fprintf(stderr, "\thelp\n");
- fprintf(stderr, "\tevent\n");
- for (cmd = &__start___cmd; cmd < &__stop___cmd;
- cmd = (struct cmd *)((char *)cmd + cmd_size)) {
- if (!cmd->handler || cmd->hidden)
+ const char *start, *lend, *end;
+
+ printf("%s", indent);
+
+ switch (cmd->idby) {
+ case CIB_NONE:
+ break;
+ case CIB_PHY:
+ printf("phy <phyname> ");
+ break;
+ case CIB_NETDEV:
+ printf("dev <devname> ");
+ break;
+ case CIB_WDEV:
+ printf("wdev <idx> ");
+ break;
+ }
+ if (cmd->parent && cmd->parent->name)
+ printf("%s ", cmd->parent->name);
+ printf("%s", cmd->name);
+
+ if (cmd->args) {
+ /* print line by line */
+ start = cmd->args;
+ end = strchr(start, '\0');
+ printf(" ");
+ do {
+ lend = strchr(start, '\n');
+ if (!lend)
+ lend = end;
+ if (start != cmd->args) {
+ printf("\t");
+ switch (cmd->idby) {
+ case CIB_NONE:
+ break;
+ case CIB_PHY:
+ printf("phy <phyname> ");
+ break;
+ case CIB_NETDEV:
+ printf("dev <devname> ");
+ break;
+ case CIB_WDEV:
+ printf("wdev <idx> ");
+ break;
+ }
+ if (cmd->parent && cmd->parent->name)
+ printf("%s ", cmd->parent->name);
+ printf("%s ", cmd->name);
+ }
+ printf("%.*s\n", (int)(lend - start), start);
+ start = lend + 1;
+ } while (end != lend);
+ } else
+ printf("\n");
+
+ if (!full || !cmd->help)
+ return;
+
+ /* hack */
+ if (strlen(indent))
+ indent = "\t\t";
+ else
+ printf("\n");
+
+ /* print line by line */
+ start = cmd->help;
+ end = strchr(start, '\0');
+ do {
+ lend = strchr(start, '\n');
+ if (!lend)
+ lend = end;
+ printf("%s", indent);
+ printf("%.*s\n", (int)(lend - start), start);
+ start = lend + 1;
+ } while (end != lend);
+
+ printf("\n");
+}
+
+static void usage_options(void)
+{
+ printf("Options:\n");
+ printf("\t--debug\t\tenable netlink debugging\n");
+}
+
+static const char *argv0;
+
+static void usage(int argc, char **argv)
+{
+ const struct cmd *section, *cmd;
+ bool full = argc >= 0;
+ const char *sect_filt = NULL;
+ const char *cmd_filt = NULL;
+ unsigned int i, j;
+
+ if (argc > 0)
+ sect_filt = argv[0];
+
+ if (argc > 1)
+ cmd_filt = argv[1];
+
+ printf("Usage:\t%s [options] command\n", argv0);
+ usage_options();
+ printf("\t--version\tshow version (%s)\n", iw_version);
+ printf("Commands:\n");
+ for_each_cmd(section, i) {
+ if (section->parent)
continue;
- switch (cmd->idby) {
- case CIB_NONE:
- fprintf(stderr, "\t");
- break;
- case CIB_PHY:
- fprintf(stderr, "\tphy <phyname> ");
- break;
- case CIB_NETDEV:
- fprintf(stderr, "\tdev <devname> ");
- break;
+
+ if (sect_filt && strcmp(section->name, sect_filt))
+ continue;
+
+ if (section->handler && !section->hidden)
+ __usage_cmd(section, "\t", full);
+
+ for_each_cmd(cmd, j) {
+ if (section != cmd->parent)
+ continue;
+ if (!cmd->handler || cmd->hidden)
+ continue;
+ if (cmd_filt && strcmp(cmd->name, cmd_filt))
+ continue;
+ __usage_cmd(cmd, "\t", full);
}
- if (cmd->section)
- fprintf(stderr, "%s ", cmd->section);
- fprintf(stderr, "%s", cmd->name);
- if (cmd->args)
- fprintf(stderr, " %s", cmd->args);
- fprintf(stderr, "\n");
}
+ printf("\nCommands that use the netdev ('dev') can also be given the\n"
+ "'wdev' instead to identify the device.\n");
+ printf("\nYou can omit the 'phy' or 'dev' if "
+ "the identification is unique,\n"
+ "e.g. \"iw wlan0 info\" or \"iw phy0 info\". "
+ "(Don't when scripting.)\n\n"
+ "Do NOT screenscrape this tool, we don't "
+ "consider its output stable.\n\n");
+}
+
+static int print_help(struct nl80211_state *state,
+ struct nl_msg *msg,
+ int argc, char **argv,
+ enum id_input id)
+{
+ exit(3);
+}
+TOPLEVEL(help, "[command]", 0, 0, CIB_NONE, print_help,
+ "Print usage for all or a specific command, e.g.\n"
+ "\"help wowlan\" or \"help wowlan enable\".");
+
+static void usage_cmd(const struct cmd *cmd)
+{
+ printf("Usage:\t%s [options] ", argv0);
+ __usage_cmd(cmd, "", true);
+ usage_options();
}
static void version(void)
{
- printf("iw version " IW_VERSION "\n");
+ printf("iw version %s\n", iw_version);
}
static int phy_lookup(char *name)
if (fd < 0)
return -1;
pos = read(fd, buf, sizeof(buf) - 1);
- if (pos < 0)
+ if (pos < 0) {
+ close(fd);
return -1;
+ }
buf[pos] = '\0';
+ close(fd);
return atoi(buf);
}
static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
void *arg)
{
+ struct nlmsghdr *nlh = (struct nlmsghdr *)err - 1;
+ int len = nlh->nlmsg_len;
+ struct nlattr *attrs;
+ struct nlattr *tb[NLMSGERR_ATTR_MAX + 1];
int *ret = arg;
+ int ack_len = sizeof(*nlh) + sizeof(int) + sizeof(*nlh);
+
*ret = err->error;
+
+ if (!(nlh->nlmsg_flags & NLM_F_ACK_TLVS))
+ return NL_STOP;
+
+ if (!(nlh->nlmsg_flags & NLM_F_CAPPED))
+ ack_len += err->msg.nlmsg_len - sizeof(*nlh);
+
+ if (len <= ack_len)
+ return NL_STOP;
+
+ attrs = (void *)((unsigned char *)nlh + ack_len);
+ len -= ack_len;
+
+ nla_parse(tb, NLMSGERR_ATTR_MAX, attrs, len, NULL);
+ if (tb[NLMSGERR_ATTR_MSG]) {
+ len = strnlen((char *)nla_data(tb[NLMSGERR_ATTR_MSG]),
+ nla_len(tb[NLMSGERR_ATTR_MSG]));
+ fprintf(stderr, "kernel reports: %*s\n", len,
+ (char *)nla_data(tb[NLMSGERR_ATTR_MSG]));
+ }
+
return NL_STOP;
}
return NL_STOP;
}
-int handle_cmd(struct nl80211_state *state, enum id_input idby,
- int argc, char **argv)
+static int (*registered_handler)(struct nl_msg *, void *);
+static void *registered_handler_data;
+
+void register_handler(int (*handler)(struct nl_msg *, void *), void *data)
+{
+ registered_handler = handler;
+ registered_handler_data = data;
+}
+
+int valid_handler(struct nl_msg *msg, void *arg)
+{
+ if (registered_handler)
+ return registered_handler(msg, registered_handler_data);
+
+ return NL_OK;
+}
+
+static int __handle_cmd(struct nl80211_state *state, enum id_input idby,
+ int argc, char **argv, const struct cmd **cmdout)
{
- struct cmd *cmd, *match = NULL;
+ const struct cmd *cmd, *match = NULL, *sectcmd;
struct nl_cb *cb;
+ struct nl_cb *s_cb;
struct nl_msg *msg;
- int devidx = 0;
- int err, o_argc;
+ signed long long devidx = 0;
+ int err, o_argc, i;
const char *command, *section;
char *tmp, **o_argv;
enum command_identify_by command_idby = CIB_NONE;
argc--;
argv++;
break;
+ case II_WDEV:
+ command_idby = CIB_WDEV;
+ devidx = strtoll(*argv, &tmp, 0);
+ if (*tmp != '\0')
+ return 1;
+ argc--;
+ argv++;
default:
break;
}
if (devidx < 0)
return -errno;
- section = command = *argv;
+ section = *argv;
argc--;
argv++;
- for (cmd = &__start___cmd; cmd < &__stop___cmd;
- cmd = (struct cmd *)((char *)cmd + cmd_size)) {
- if (!cmd->handler)
+ for_each_cmd(sectcmd, i) {
+ if (sectcmd->parent)
continue;
- if (cmd->idby != command_idby)
+ /* ok ... bit of a hack for the dupe 'info' section */
+ if (match && sectcmd->idby != command_idby)
continue;
- if (cmd->section) {
- if (strcmp(cmd->section, section))
+ if (strcmp(sectcmd->name, section) == 0)
+ match = sectcmd;
+ }
+
+ sectcmd = match;
+ match = NULL;
+ if (!sectcmd)
+ return 1;
+
+ if (argc > 0) {
+ command = *argv;
+
+ for_each_cmd(cmd, i) {
+ if (!cmd->handler)
continue;
- /* this is a bit icky ... */
- if (command == section) {
- if (argc <= 0) {
- if (match)
- break;
- return 1;
- }
- command = *argv;
- argc--;
- argv++;
- }
- } else if (section != command)
- continue;
- if (strcmp(cmd->name, command))
- continue;
- if (argc && !cmd->args)
- continue;
+ if (cmd->parent != sectcmd)
+ continue;
+ /*
+ * ignore mismatch id by, but allow WDEV
+ * in place of NETDEV
+ */
+ if (cmd->idby != command_idby &&
+ !(cmd->idby == CIB_NETDEV &&
+ command_idby == CIB_WDEV))
+ continue;
+ if (strcmp(cmd->name, command))
+ continue;
+ if (argc > 1 && !cmd->args)
+ continue;
+ match = cmd;
+ break;
+ }
- match = cmd;
+ if (match) {
+ argc--;
+ argv++;
+ }
}
- cmd = match;
+ if (match)
+ cmd = match;
+ else {
+ /* Use the section itself, if possible. */
+ cmd = sectcmd;
+ if (argc && !cmd->args)
+ return 1;
+ if (cmd->idby != command_idby &&
+ !(cmd->idby == CIB_NETDEV && command_idby == CIB_WDEV))
+ return 1;
+ if (!cmd->handler)
+ return 1;
+ }
- if (!cmd)
- return 1;
+ if (cmd->selector) {
+ cmd = cmd->selector(argc, argv);
+ if (!cmd)
+ return 1;
+ }
+
+ if (cmdout)
+ *cmdout = cmd;
if (!cmd->cmd) {
argc = o_argc;
argv = o_argv;
- return cmd->handler(state, NULL, NULL, argc, argv);
+ return cmd->handler(state, NULL, argc, argv, idby);
}
msg = nlmsg_alloc();
return 2;
}
- cb = nl_cb_alloc(debug ? NL_CB_DEBUG : NL_CB_DEFAULT);
- if (!cb) {
+ cb = nl_cb_alloc(iw_debug ? NL_CB_DEBUG : NL_CB_DEFAULT);
+ s_cb = nl_cb_alloc(iw_debug ? NL_CB_DEBUG : NL_CB_DEFAULT);
+ if (!cb || !s_cb) {
fprintf(stderr, "failed to allocate netlink callbacks\n");
err = 2;
- goto out_free_msg;
+ goto out;
}
- genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
+ genlmsg_put(msg, 0, 0, state->nl80211_id, 0,
cmd->nl_msg_flags, cmd->cmd, 0);
switch (command_idby) {
case CIB_NETDEV:
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, devidx);
break;
+ case CIB_WDEV:
+ NLA_PUT_U64(msg, NL80211_ATTR_WDEV, devidx);
+ break;
default:
break;
}
- err = cmd->handler(state, cb, msg, argc, argv);
+ err = cmd->handler(state, msg, argc, argv, idby);
if (err)
goto out;
+ nl_socket_set_cb(state->nl_sock, s_cb);
+
err = nl_send_auto_complete(state->nl_sock, msg);
if (err < 0)
goto out;
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);
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, valid_handler, NULL);
while (err > 0)
nl_recvmsgs(state->nl_sock, cb);
out:
nl_cb_put(cb);
- out_free_msg:
+ nl_cb_put(s_cb);
nlmsg_free(msg);
return err;
nla_put_failure:
return 2;
}
-static int no_seq_check(struct nl_msg *msg, void *arg)
-{
- return NL_OK;
-}
-
-static int print_event(struct nl_msg *msg, void *arg)
-{
- struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
- struct nlattr *tb[NL80211_ATTR_MAX + 1];
- char ifname[100];
- __u8 reg_type;
-
- nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
- genlmsg_attrlen(gnlh, 0), NULL);
-
- switch (gnlh->cmd) {
- case NL80211_CMD_NEW_WIPHY:
- printf("wiphy rename: phy #%d to %s\n",
- nla_get_u32(tb[NL80211_ATTR_WIPHY]),
- nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]));
- break;
- case NL80211_CMD_NEW_SCAN_RESULTS:
- if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), ifname);
- printf("scan finished on %s (phy #%d)\n",
- ifname, nla_get_u32(tb[NL80211_ATTR_WIPHY]));
- break;
- case NL80211_CMD_SCAN_ABORTED:
- if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), ifname);
- printf("scan aborted on %s (phy #%d)\n",
- ifname, nla_get_u32(tb[NL80211_ATTR_WIPHY]));
- break;
- case NL80211_CMD_REG_CHANGE:
-
- printf("regulatory domain change: ");
-
- reg_type = nla_get_u8(tb[NL80211_ATTR_REG_TYPE]);
-
- switch (reg_type) {
- case NL80211_REGDOM_TYPE_COUNTRY:
- printf("set to %s by %s request",
- nla_get_string(tb[NL80211_ATTR_REG_ALPHA2]),
- reg_initiator_to_string(nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])));
- if (tb[NL80211_ATTR_WIPHY])
- printf(" on phy%d", nla_get_u32(tb[NL80211_ATTR_WIPHY]));
- break;
- case NL80211_REGDOM_TYPE_WORLD:
- printf("set to world roaming by %s request",
- reg_initiator_to_string(nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])));
- break;
- case NL80211_REGDOM_TYPE_CUSTOM_WORLD:
- printf("custom world roaming rules in place on phy%d by %s request",
- nla_get_u32(tb[NL80211_ATTR_WIPHY]),
- reg_initiator_to_string(nla_get_u32(tb[NL80211_ATTR_REG_INITIATOR])));
- break;
- case NL80211_REGDOM_TYPE_INTERSECTION:
- printf("intersection used due to a request made by %s",
- reg_initiator_to_string(nla_get_u32(tb[NL80211_ATTR_REG_INITIATOR])));
- if (tb[NL80211_ATTR_WIPHY])
- printf(" on phy%d", nla_get_u32(tb[NL80211_ATTR_WIPHY]));
- break;
- default:
- printf("unknown source (upgrade this utility)");
- break;
- }
-
- printf("\n");
- break;
- default:
- printf("unknown event: %d\n", gnlh->cmd);
- break;
- }
-
- return NL_SKIP;
-}
-
-struct wait_event {
- int n_cmds;
- const __u32 *cmds;
- __u32 cmd;
-};
-
-static int wait_event(struct nl_msg *msg, void *arg)
+int handle_cmd(struct nl80211_state *state, enum id_input idby,
+ int argc, char **argv)
{
- struct wait_event *wait = arg;
- struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
- int i;
-
- for (i = 0; i < wait->n_cmds; i++) {
- if (gnlh->cmd == wait->cmds[i]) {
- wait->cmd = gnlh->cmd;
- }
- }
-
- return NL_SKIP;
+ return __handle_cmd(state, idby, argc, argv, NULL);
}
-__u32 listen_events(struct nl80211_state *state,
- const int n_waits, const __u32 *waits)
-{
- int mcid, ret;
- struct nl_cb *cb = nl_cb_alloc(debug ? NL_CB_DEBUG : NL_CB_DEFAULT);
- struct wait_event wait_ev;
-
- if (!cb) {
- fprintf(stderr, "failed to allocate netlink callbacks\n");
- return -ENOMEM;
- }
-
- /* Configuration multicast group */
- mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "config");
- if (mcid < 0)
- return mcid;
-
- ret = nl_socket_add_membership(state->nl_sock, mcid);
- if (ret)
- return ret;
-
- /* Scan multicast group */
- mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "scan");
- if (mcid >= 0) {
- ret = nl_socket_add_membership(state->nl_sock, mcid);
- if (ret)
- return ret;
- }
-
- /* Regulatory multicast group */
- mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "regulatory");
- if (mcid >= 0) {
- ret = nl_socket_add_membership(state->nl_sock, mcid);
- if (ret)
- return ret;
- }
-
- /* no sequence checking for multicast messages */
- nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
-
- if (n_waits && waits) {
- wait_ev.cmds = waits;
- wait_ev.n_cmds = n_waits;
- nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, wait_event, &wait_ev);
- } else {
- nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_event, NULL);
- }
-
- wait_ev.cmd = 0;
-
- while (!wait_ev.cmd)
- nl_recvmsgs(state->nl_sock, cb);
-
- nl_cb_put(cb);
-
- return wait_ev.cmd;
-}
+/*
+ * Unfortunately, I don't know how densely the linker packs the struct cmd.
+ * For example, if you have a 72-byte struct cmd, the linker will pad each
+ * out to 96 bytes before putting them together in the section. There must
+ * be some algorithm, but I haven't found it yet.
+ *
+ * We used to calculate this by taking the (abs value of) the difference
+ * between __section_get and __section_set, but if LTO is enabled then this
+ * stops working because the entries of the "__cmd" section get rearranged
+ * freely by the compiler/linker.
+ *
+ * Fix this by using yet another "__sizer" section that only contains these
+ * two entries - then the (abs value of) the difference between them will
+ * be how they get packed and that can be used to iterate the __cmd section
+ * as well.
+ */
+static struct cmd sizer1 __attribute__((section("__sizer"))) = {};
+static struct cmd sizer2 __attribute__((section("__sizer"))) = {};
int main(int argc, char **argv)
{
struct nl80211_state nlstate;
int err;
- const char *argv0;
+ const struct cmd *cmd = NULL;
/* calculate command size including padding */
- cmd_size = abs((long)&__cmd_NULL_1_CIB_NONE_0
- - (long)&__cmd_NULL_0_CIB_NONE_0);
+ cmd_size = labs((long)&sizer2 - (long)&sizer1);
/* strip off self */
argc--;
argv0 = *argv++;
if (argc > 0 && strcmp(*argv, "--debug") == 0) {
- debug = 1;
+ iw_debug = 1;
argc--;
argv++;
}
return 0;
}
+ /* need to treat "help" command specially so it works w/o nl80211 */
if (argc == 0 || strcmp(*argv, "help") == 0) {
- usage(argv0);
+ usage(argc - 1, argv + 1);
return 0;
}
if (err)
return 1;
- if (strcmp(*argv, "event") == 0) {
- if (argc != 1)
- err = 1;
- else
- err = listen_events(&nlstate, 0, NULL);
- } else if (strcmp(*argv, "dev") == 0) {
+ if (strcmp(*argv, "dev") == 0 && argc > 1) {
argc--;
argv++;
- err = handle_cmd(&nlstate, II_NETDEV, argc, argv);
- } else if (strncmp(*argv, "phy", 3) == 0) {
+ err = __handle_cmd(&nlstate, II_NETDEV, argc, argv, &cmd);
+ } else if (strncmp(*argv, "phy", 3) == 0 && argc > 1) {
if (strlen(*argv) == 3) {
argc--;
argv++;
- err = handle_cmd(&nlstate, II_PHY_NAME, argc, argv);
+ err = __handle_cmd(&nlstate, II_PHY_NAME, argc, argv, &cmd);
} else if (*(*argv + 3) == '#')
- err = handle_cmd(&nlstate, II_PHY_IDX, argc, argv);
+ err = __handle_cmd(&nlstate, II_PHY_IDX, argc, argv, &cmd);
else
- err = 1;
- } else
- err = handle_cmd(&nlstate, II_NONE, argc, argv);
+ goto detect;
+ } else if (strcmp(*argv, "wdev") == 0 && argc > 1) {
+ argc--;
+ argv++;
+ err = __handle_cmd(&nlstate, II_WDEV, argc, argv, &cmd);
+ } else {
+ int idx;
+ enum id_input idby;
+ detect:
+ idby = II_NONE;
+ if ((idx = if_nametoindex(argv[0])) != 0)
+ idby = II_NETDEV;
+ else if ((idx = phy_lookup(argv[0])) >= 0)
+ idby = II_PHY_NAME;
+ err = __handle_cmd(&nlstate, idby, argc, argv, &cmd);
+ }
- if (err == 1)
- usage(argv0);
- if (err < 0)
+ if (err == HANDLER_RET_USAGE) {
+ if (cmd)
+ usage_cmd(cmd);
+ else
+ usage(0, NULL);
+ } else if (err == HANDLER_RET_DONE) {
+ err = 0;
+ } else if (err < 0)
fprintf(stderr, "command failed: %s (%d)\n", strerror(-err), err);
nl80211_cleanup(&nlstate);
projects / thirdparty / iw.git / blobdiff