fixed bug in ex_pipe()

make_pipe() should produce non-inheritable descriptors/handles
added process_tostring() method

posix/ex.c

@@ -284,12 +284,21 @@ static int ex_unlock(lua_State *L)
 	return ex_lock(L);
 }
 
+static int closeonexec(int d)
+{
+	int fl = fcntl(d, F_GETFD);
+	if (fl != -1)
+		fl = fcntl(d, F_SETFD, fl | FD_CLOEXEC);
+	return fl;
+}
 
 static int make_pipe(FILE **i, FILE **o)
 {
 	int fd[2];
 	if (-1 == pipe(fd))
 		return 0;
+	closeonexec(fd[0]);
+	closeonexec(fd[1]);
 	*i = fdopen(fd[0], "r");
 	*o = fdopen(fd[1], "w");
 	return 1;
@@ -306,7 +315,7 @@ static int ex_pipe(lua_State *L)
 	lua_pushvalue(L, -2);
 	lua_setmetatable(L, -2);
 	*(pf = lua_newuserdata(L, sizeof *pf)) = o;
-	lua_pushvalue(L, -2);
+	lua_pushvalue(L, -3);
 	lua_setmetatable(L, -2);
 	return 2;
 }
@@ -417,6 +426,7 @@ static const luaL_reg ex_diriter_methods[] = {
 };
 static const luaL_reg ex_process_methods[] = {
 	{"wait",       process_wait},
+	{"__tostring", process_tostring},
 	{0,0}
 };
 

posix/spawn.c

@@ -133,3 +133,14 @@ int process_wait(lua_State *L)
 	lua_pushnumber(L, p->status);
 	return 1;
 }
+
+/* proc -- string */
+int process_tostring(lua_State *L)
+{
+	struct process *p = checkuserdata(L, 1, PROCESS_HANDLE);
+	char buf[40];
+	lua_pushlstring(L, buf,
+		sprintf(buf, "process (%lu, %s)", (unsigned long)p->pid,
+			p->status==-1 ? "running" : "terminated"));
+	return 1;
+}

posix/spawn.h

@@ -28,5 +28,6 @@ void spawn_param_env(struct spawn_params *p);
 void spawn_param_redirects(struct spawn_params *p);
 int spawn_param_execute(struct spawn_params *p, struct process *proc);
 int process_wait(lua_State *L);
+int process_tostring(lua_State *L);
 
 #endif/*SPAWN_H*/

w32api/ex.c

@@ -151,17 +151,6 @@ static FILE *check_file(lua_State *L, int idx)
 	return *pf;
 }
 
-static BOOL GetFileInformationByPath(LPCSTR name, BY_HANDLE_FILE_INFORMATION *pinfo)
-{
-	HANDLE h = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
-	BOOL ret = h != INVALID_HANDLE_VALUE;
-	if (ret) {
-		ret = GetFileInformationByHandle(h, pinfo);
-		CloseHandle(h);
-	}
-	return ret;
-}
-
 static uint64_t get_size(const char *name)
 {
 	HANDLE h = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
@@ -360,6 +349,8 @@ static int make_pipe(FILE **i, FILE **o)
 	HANDLE ph[2];
 	if (0 == CreatePipe(ph+0, ph+1, 0, 0))
 		return 0;
+	SetHandleInformation(ph[0], HANDLE_FLAG_INHERIT, 0);
+	SetHandleInformation(ph[1], HANDLE_FLAG_INHERIT, 0);
 	*i = _fdopen(_open_osfhandle((long)ph[0], _O_RDONLY), "r");
 	*o = _fdopen(_open_osfhandle((long)ph[1], _O_WRONLY), "w");
 	return 1;
@@ -376,7 +367,7 @@ static int ex_pipe(lua_State *L)
 	lua_pushvalue(L, -2);
 	lua_setmetatable(L, -2);
 	*(pf = lua_newuserdata(L, sizeof *pf)) = o;
-	lua_pushvalue(L, -2);
+	lua_pushvalue(L, -3);
 	lua_setmetatable(L, -2);
 	return 2;
 }
@@ -487,6 +478,7 @@ static const luaL_reg ex_diriter_methods[] = {
 };
 static const luaL_reg ex_process_methods[] = {
 	{"wait",       process_wait},
+	{"__tostring", process_tostring},
 	{0,0}
 };
 

w32api/spawn.c

@@ -135,7 +135,10 @@ int spawn_param_execute(struct spawn_params *p, struct process *proc)
 	int ret = CreateProcess(0, c, 0, 0, 0, 0, e, 0, &p->si, &pi);
 	if (e) free(e);
 	free(c);
-	if (ret) proc->hProcess = pi.hProcess;
+	if (ret) {
+		proc->hProcess = pi.hProcess;
+		proc->dwProcessId = pi.dwProcessId;
+	}
 	return ret;
 }
 
@@ -153,3 +156,14 @@ int process_wait(lua_State *L)
 	lua_pushnumber(L, p->status);
 	return 1;
 }
+
+/* proc -- string */
+int process_tostring(lua_State *L)
+{
+	struct process *p = checkuserdata(L, 1, PROCESS_HANDLE);
+	char buf[40];
+	lua_pushlstring(L, buf,
+		sprintf(buf, "process (%lu, %s)", (unsigned long)p->dwProcessId,
+			p->status==-1 ? "running" : "terminated"));
+	return 1;
+}

w32api/spawn.h

@@ -15,6 +15,7 @@ struct spawn_params {
 struct process {
     int status;
     HANDLE hProcess;
+	DWORD dwProcessId;
 };
 
 void spawn_param_filename(struct spawn_params *p);
@@ -25,5 +26,6 @@ void spawn_param_redirects(struct spawn_params *p);
 int spawn_param_execute(struct spawn_params *p, struct process *proc);
 
 int process_wait(lua_State *L);
+int process_tostring(lua_State *L);
 
 #endif/*SPAWN_H*/