Const-ify the world (or at least a good part of it)

This patch adds 'const' tags to a number of Asterisk APIs where they are appropriate (where the API already demanded that the function argument not be modified, but the compiler was not informed of that fact). The list includes:

- CLI command handlers
- CLI command handler arguments
- AGI command handlers
- AGI command handler arguments
- Dialplan application handler arguments
- Speech engine API function arguments

In addition, various file-scope and function-scope constant arrays got 'const' and/or 'static' qualifiers where they were missing.

Review: https://reviewboard.asterisk.org/r/251/



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@196072 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 2 insertions, 2 deletions

diff --git a/apps/app_playback.c b/apps/app_playback.c
index a61c49bc9..54e90ffc2 100644
--- a/apps/app_playback.c
+++ b/apps/app_playback.c
@@ -380,7 +380,7 @@ static int say_init_mode(const char *mode) {
 static char *__say_cli_init(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 {
 	const char *old_mode = say_api_buf[0] ? say_new : say_old;
-	char *mode;
+	const char *mode;
 	switch (cmd) {
 	case CLI_INIT:
 		e->command = "say load [new|old]";
@@ -415,7 +415,7 @@ static struct ast_cli_entry cli_playback[] = {
 	AST_CLI_DEFINE(__say_cli_init, "Set or show the say mode"),
 };
 
-static int playback_exec(struct ast_channel *chan, void *data)
+static int playback_exec(struct ast_channel *chan, const char *data)
 {
 	int res = 0;
 	int mres = 0;