add --debug option

diff --git a/iw.c b/iw.c
index 2cc3e6c9c2bc71fde73d6110515c255e4649e363..d872025a61f8eaa64041ff9fa0b76978a34475b4 100644 (file)
--- a/iw.c
+++ b/iw.c
@@ -22,6 +22,7 @@
 
 #include "iw.h"
 
+int debug = 0;
 
 static int nl80211_init(struct nl80211_state *state)
 {
@@ -73,19 +74,22 @@ static void usage(const char *argv0)
 {
        struct cmd *cmd;
 
-       fprintf(stderr, "Usage:\t%s help\n", argv0);
+       fprintf(stderr, "Usage:\t%s [options] command\n", argv0);
+       fprintf(stderr, "Options:\n");
+       fprintf(stderr, "\t--debug\tenable netlink debugging\n");
+       fprintf(stderr, "Commands:\n");
        for (cmd = &__start___cmd; cmd < &__stop___cmd; cmd++) {
                switch (cmd->idby) {
                case CIB_NONE:
-                       fprintf(stderr, "\t%s ", argv0);
+                       fprintf(stderr, "\t");
                        /* fall through */
                case CIB_PHY:
                        if (cmd->idby == CIB_PHY)
-                               fprintf(stderr, "\t%s phy <phyname> ", argv0);
+                               fprintf(stderr, "\tphy <phyname> ");
                        /* fall through */
                case CIB_NETDEV:
                        if (cmd->idby == CIB_NETDEV)
-                               fprintf(stderr, "\t%s dev <devname> ", argv0);
+                               fprintf(stderr, "\tdev <devname> ");
                        if (cmd->section)
                                fprintf(stderr, "%s ", cmd->section);
                        fprintf(stderr, "%s", cmd->name);
@@ -197,7 +201,7 @@ static int handle_cmd(struct nl80211_state *state,
                return 2;
        }
 
-       cb = nl_cb_alloc(NL_CB_DEFAULT);
+       cb = nl_cb_alloc(debug ? NL_CB_DEBUG : NL_CB_DEFAULT);
        if (!cb) {
                fprintf(stderr, "failed to allocate netlink callbacks\n");
                err = 2;
@@ -255,6 +259,12 @@ int main(int argc, char **argv)
        argc--;
        argv0 = *argv++;
 
+       if (argc > 0 && strcmp(*argv, "--debug") == 0) {
+               debug = 1;
+               argc--;
+               argv++;
+       }
+
        if (argc == 0 || strcmp(*argv, "help") == 0) {
                usage(argv0);
                goto out;