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BUG/MINOR: lua: Fix lua error handling in hlua_config_prepend_path()

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Set an `lua_atpanic()` handler before calling `hlua_prepend_path()` in
`hlua_config_prepend_path()`.

This prevents the process from abort()ing when `hlua_prepend_path()` fails
for some reason.

see GitHub Issue #1409

This is a very minor issue that can't happen in practice. No backport needed.
This commit is contained in:
Tim Duesterhus 2021-10-11 18:51:08 +02:00 committed by Christopher Faulet
parent 8c67eceeca
commit 9e5e586e35
1 changed files with 25 additions and 2 deletions
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27
src/hlua.c
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@ -11167,8 +11167,31 @@ static int hlua_config_prepend_path(char **args, int section_type, struct proxy
}
LIST_APPEND(&prepend_path_list, &p->l);
hlua_prepend_path(hlua_states[0], type, path);
hlua_prepend_path(hlua_states[1], type, path);
/* Handle the global state and the per-thread state for the first
* thread. The remaining threads will be initialized based on
* prepend_path_list.
*/
for (size_t i = 0; i < 2; i++) {
lua_State *L = hlua_states[i];
const char *error;
if (setjmp(safe_ljmp_env) != 0) {
lua_atpanic(L, hlua_panic_safe);
if (lua_type(L, -1) == LUA_TSTRING)
error = lua_tostring(L, -1);
else
error = "critical error";
fprintf(stderr, "lua-prepend-path: %s.\n", error);
exit(1);
} else {
lua_atpanic(L, hlua_panic_ljmp);
}
hlua_prepend_path(L, type, path);
lua_atpanic(L, hlua_panic_safe);
}
return 0;
err2: