Add --enable-embedded-help option to embed --help messages in binaries

[lttng-tools.git] / src / bin / lttng / commands / disable_channels.c

diff --git a/src/bin/lttng/commands/disable_channels.c b/src/bin/lttng/commands/disable_channels.c
index 27f1db5b845f738af0b7a97f4c1062774c8f828a..775ff895905b1fc91247b507a2a78a014adec254 100644 (file)
--- a/src/bin/lttng/commands/disable_channels.c
+++ b/src/bin/lttng/commands/disable_channels.c
@@ -15,7 +15,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#define _GNU_SOURCE
+#define _LGPL_SOURCE
 #include <popt.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -33,10 +33,11 @@ static char *opt_channels;
 static int opt_kernel;
 static char *opt_session_name;
 static int opt_userspace;
-#if 0
-/* Not implemented yet */
-static char *opt_cmd_name;
-static pid_t opt_pid;
+
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-disable-channel.1.h>
+;
 #endif
 
 enum {
@@ -53,33 +54,11 @@ static struct poptOption long_options[] = {
        {"help",           'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
        {"session",        's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
        {"kernel",         'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
-#if 0
-       /* Not implemented yet */
-       {"userspace",      'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
-       {"pid",            'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
-#else
        {"userspace",      'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
-#endif
        {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
        {0, 0, 0, 0, 0, 0, 0}
 };
 
-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
-       fprintf(ofp, "usage: lttng disable-channel NAME[,NAME2,...] (-k | -u) [OPTIONS]\n");
-       fprintf(ofp, "\n");
-       fprintf(ofp, "Options:\n");
-       fprintf(ofp, "  -h, --help               Show this help\n");
-       fprintf(ofp, "      --list-options       Simple listing of options\n");
-       fprintf(ofp, "  -s, --session NAME       Apply to session name\n");
-       fprintf(ofp, "  -k, --kernel             Apply to the kernel tracer\n");
-       fprintf(ofp, "  -u, --userspace          Apply to the user-space tracer\n");
-       fprintf(ofp, "\n");
-}
-
 static int mi_partial_channel_print(char *channel_name, unsigned int enabled,
                int success)
 {
@@ -142,9 +121,8 @@ static int disable_channels(char *session_name)
        } else if (opt_userspace) {
                dom.type = LTTNG_DOMAIN_UST;
        } else {
-               print_missing_domain();
-               ret = CMD_ERROR;
-               goto error;
+               /* Checked by the caller. */
+               assert(0);
        }
 
        handle = lttng_create_handle(session_name, &dom);
@@ -245,7 +223,7 @@ int cmd_disable_channels(int argc, const char **argv)
        while ((opt = poptGetNextOpt(pc)) != -1) {
                switch (opt) {
                case OPT_HELP:
-                       usage(stdout);
+                       SHOW_HELP();
                        goto end;
                case OPT_USERSPACE:
                        opt_userspace = 1;
@@ -254,16 +232,20 @@ int cmd_disable_channels(int argc, const char **argv)
                        list_cmd_options(stdout, long_options);
                        goto end;
                default:
-                       usage(stderr);
                        ret = CMD_UNDEFINED;
                        goto end;
                }
        }
 
+       ret = print_missing_or_multiple_domains(opt_kernel + opt_userspace);
+       if (ret) {
+               ret = CMD_ERROR;
+               goto end;
+       }
+
        opt_channels = (char*) poptGetArg(pc);
        if (opt_channels == NULL) {
                ERR("Missing channel name(s).\n");
-               usage(stderr);
                ret = CMD_ERROR;
                goto end;
        }