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Strengthen the pledge() polyfill

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This commit is contained in:
Justine Tunney 2022-06-27 13:01:58 -07:00
parent a6f65eea7c
commit 3c92adfd6e
79 changed files with 1457 additions and 357 deletions
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33
third_party/lua/lrepl.c vendored
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@ -31,6 +31,7 @@
#include "libc/calls/struct/sigaction.h"
#include "libc/errno.h"
#include "libc/intrin/nomultics.internal.h"
#include "libc/intrin/pthread.h"
#include "libc/log/check.h"
#include "libc/macros.internal.h"
#include "libc/mem/mem.h"
@ -68,11 +69,19 @@ static const char *const kKeywordHints[] = {
bool lua_repl_blocking;
bool lua_repl_isterminal;
linenoiseCompletionCallback *lua_repl_completions_callback;
_Alignas(64) char lua_repl_lock;
struct linenoiseState *lua_repl_linenoise;
static lua_State *globalL;
static const char *g_progname;
static const char *g_historypath;
static pthread_mutex_t lua_repl_lock_obj;
void(lua_repl_lock)(void) {
pthread_mutex_lock(&lua_repl_lock_obj);
}
void(lua_repl_unlock)(void) {
pthread_mutex_unlock(&lua_repl_lock_obj);
}
/*
** {==================================================================
@ -239,7 +248,7 @@ static ssize_t pushline (lua_State *L, int firstline) {
prmt = strdup(get_prompt(L, firstline));
lua_pop(L, 1); /* remove prompt */
if (lua_repl_isterminal) {
LUA_REPL_UNLOCK;
lua_repl_unlock();
rc = linenoiseEdit(lua_repl_linenoise, prmt, &b, !firstline || lua_repl_blocking);
free(prmt);
if (rc != -1) {
@ -249,9 +258,9 @@ static ssize_t pushline (lua_State *L, int firstline) {
linenoiseHistorySave(g_historypath);
}
}
LUA_REPL_LOCK;
lua_repl_lock();
} else {
LUA_REPL_UNLOCK;
lua_repl_unlock();
fputs(prmt, stdout);
fflush(stdout);
b = linenoiseGetLine(stdin);
@ -262,7 +271,7 @@ static ssize_t pushline (lua_State *L, int firstline) {
} else {
rc = 0;
}
LUA_REPL_LOCK;
lua_repl_lock();
}
if (!(rc == -1 && errno == EAGAIN)) {
write(1, "\n", 1);
@ -330,7 +339,7 @@ static int multiline (lua_State *L) {
void lua_initrepl(lua_State *L, const char *progname) {
const char *prompt;
LUA_REPL_LOCK;
lua_repl_lock();
g_progname = progname;
if ((lua_repl_isterminal = linenoiseIsTerminal())) {
linenoiseSetCompletionCallback(lua_readline_completions);
@ -349,16 +358,16 @@ void lua_initrepl(lua_State *L, const char *progname) {
__replmode = true;
if (isatty(2)) __replstderr = true;
}
LUA_REPL_UNLOCK;
lua_repl_unlock();
}
void lua_freerepl(void) {
LUA_REPL_LOCK;
lua_repl_lock();
__replmode = false;
linenoiseEnd(lua_repl_linenoise);
free(g_historypath);
LUA_REPL_UNLOCK;
lua_repl_unlock();
}
@ -375,16 +384,16 @@ int lua_loadline (lua_State *L) {
ssize_t rc;
int status;
lua_settop(L, 0);
LUA_REPL_LOCK;
lua_repl_lock();
if ((rc = pushline(L, 1)) != 1) {
LUA_REPL_UNLOCK;
lua_repl_unlock();
return rc - 1; /* eof or error */
}
if ((status = addreturn(L)) != LUA_OK) /* 'return ...' did not work? */
status = multiline(L); /* try as command, maybe with continuation lines */
lua_remove(L, 1); /* remove line from the stack */
lua_assert(lua_gettop(L) == 1);
LUA_REPL_UNLOCK;
lua_repl_unlock();
return status;
}