int buf_wait (
struct buf * bp
) {
LIST *pBufHead = &bp->b_vp->v_mount->mnt_buflist;
/* Make sure I/O is complete */
if ((bp->b_flags & B_DONE) == 0) {
if (bio_wait (bp->b_bio)) {
bp->b_flags |= B_ERROR;
}
buf_done (bp, OK);
}
if ((bp->b_flags & B_ERROR) || bp->b_error) {
if ((bp->b_flags & B_INVAL) == 0) {
bp->b_flags |= B_INVAL;
listRemove (pBufHead, &bp->b_node); /* Remove from list */
listInsert (pBufHead, NULL, &bp->b_node); /* Insert at list head */
}
if (!bp->b_error) {
bp->b_error = EIO;
} else {
bp->b_flags |= B_ERROR;
}
return (bp->b_error);
} else {
return (OK);
}
}
int mar_encode(lua_State* L)
{
const unsigned char m = MAR_MAGIC;
size_t idx, len;
mar_Buffer buf;
if (lua_isnone(L, 1)) {
lua_pushnil(L);
}
if (lua_isnone(L, 2)) {
lua_pushnil(L);
}
if (lua_isnil(L, 2)) {
lua_newtable(L);
lua_replace(L,2);
}
else if (!lua_istable(L, 2)) {
luaL_error(L, "bad argument #2 to encode (expected table)");
}
int nowrap=0;
if(lua_isboolean(L,3)) {
nowrap=lua_toboolean(L,3);
lua_remove(L,3);
}
len = lua_objlen(L, 2);
lua_newtable(L);
for (idx = 1; idx <= len; idx++) {
lua_rawgeti(L, 2, idx);
lua_pushinteger(L, idx);
lua_rawset(L, SEEN_IDX);
}
lua_pushvalue(L, 1);
buf_init(L, &buf);
buf_write(L, (void*)&m, 1, &buf);
mar_encode_value(L, &buf, -1, &idx, nowrap);
if(nowrap) {
lua_pushboolean(L,nowrap);
lua_replace(L,3);
}
lua_pop(L, 1);
lua_pushlstring(L, buf.data, buf.head);
buf_done(L, &buf);
lua_remove(L, SEEN_IDX);
return 1;
}
static int tbl_marshal(lua_State* L)
{
const unsigned char m = MAR_MAGIC;
int idx=1;
mar_Buffer buf;
lua_newtable(L);
lua_pushvalue(L, 1);
buf_init(L, &buf);
buf_write(L, (void*)&m, 1, &buf);
mar_pack(L, &buf, &idx);
lua_pushlstring(L, buf.data, buf.head);
buf_done(L, &buf);
return 1;
}
int mar_encode(lua_State* L)
{
const unsigned char m = MAR_MAGIC;
size_t idx, len;
mar_Buffer buf;
if (lua_isnone(L, 1)) {
lua_pushnil(L);
}
if (lua_isnoneornil(L, 2)) {
lua_newtable(L);
}
else if (!lua_istable(L, 2)) {
luaL_error(L, "bad argument #2 to encode (expected table)");
}
lua_settop(L, 2);
len = lua_rawlen(L, 2);
lua_newtable(L);
for (idx = 1; idx <= len; idx++) {
lua_rawgeti(L, 2, idx);
if (lua_isnil(L, -1)) {
lua_pop(L, 1);
continue;
}
lua_pushinteger(L, idx);
lua_rawset(L, SEEN_IDX);
}
lua_pushvalue(L, 1);
buf_init(L, &buf);
buf_write(L, (const char*)&m, 1, &buf);
mar_encode_value(L, &buf, -1, &idx);
lua_pop(L, 1);
lua_pushlstring(L, buf.data, buf.head);
buf_done(L, &buf);
lua_remove(L, SEEN_IDX);
return 1;
}
static void pack_value(lua_State *L, mar_Buffer *buf, int val, int *idx)
{
size_t l;
int val_type = lua_type(L, val);
buf_write(L, (void*)&val_type, MAR_CHR, buf);
switch (val_type) {
case LUA_TBOOLEAN: {
int int_val = lua_toboolean(L, val);
buf_write(L, (void*)&int_val, MAR_CHR, buf);
break;
}
case LUA_TSTRING: {
const char *str_val = lua_tolstring(L, val, &l);
buf_write(L, (void*)&l, MAR_I32, buf);
buf_write(L, str_val, l, buf);
break;
}
case LUA_TNUMBER: {
lua_Number num_val = lua_tonumber(L, val);
buf_write(L, (void*)&num_val, MAR_I64, buf);
break;
}
case LUA_TTABLE: {
int tag, ref;
lua_pushvalue(L, val);
lua_rawget(L, 2);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
lua_pop(L, 1);
if (luaL_getmetafield(L, val, "__persist")) {
tag = MAR_TUSR;
lua_pushvalue(L, val-1);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, 2);
lua_pushvalue(L, val-1);
lua_call(L, 1, 1);
if (!lua_isfunction(L, -1)) {
luaL_error(L, "__persist must return a function");
}
lua_newtable(L);
lua_pushvalue(L, -2);
lua_rawseti(L, -2, 1);
lua_remove(L, -2);
buf_init(L, &rec_buf);
mar_pack(L, &rec_buf, idx);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
}
else {
tag = MAR_TVAL;
lua_pushvalue(L, val);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, 2);
lua_pushvalue(L, val);
buf_init(L, &rec_buf);
mar_pack(L, &rec_buf, idx);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data,rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
}
}
break;
}
case LUA_TFUNCTION: {
int tag, ref;
lua_pushvalue(L, val);
lua_rawget(L, 2);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
int i;
lua_Debug ar;
lua_pop(L, 1);
tag = MAR_TVAL;
lua_pushvalue(L, val);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, 2);
lua_pushvalue(L, val);
buf_init(L, &rec_buf);
lua_dump(L, (lua_Writer)buf_write, &rec_buf);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
lua_pushvalue(L, val);
lua_getinfo(L, ">uS", &ar);
if (ar.what[0] != 'L') {
luaL_error(L, "attempt to persist a C function");
}
lua_newtable(L);
for (i=1; i <= ar.nups; i++) {
lua_getupvalue(L, -2, i);
lua_rawseti(L, -2, i);
}
buf_init(L, &rec_buf);
mar_pack(L, &rec_buf, idx);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
}
break;
}
case LUA_TUSERDATA: {
int tag, ref;
lua_pushvalue(L, val);
lua_rawget(L, 2);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
lua_pop(L, 1);
if (luaL_getmetafield(L, val, "__persist")) {
tag = MAR_TUSR;
lua_pushvalue(L, val-1);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, 2);
lua_pushvalue(L, val-1);
lua_call(L, 1, 1);
if (!lua_isfunction(L, -1)) {
luaL_error(L, "__persist must return a function");
}
lua_newtable(L);
lua_pushvalue(L, -2);
lua_rawseti(L, -2, 1);
lua_remove(L, -2);
buf_init(L, &rec_buf);
mar_pack(L, &rec_buf, idx);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
}
else {
tag = MAR_TVAL;
buf_write(L, (void*)&tag, MAR_CHR, buf);
}
}
break;
}
case LUA_TTHREAD: break; /* just give them a nil during unpack */
default:
luaL_error(L, "invalid value type");
}
}
static void mar_encode_value(lua_State *L, mar_Buffer *buf, int val, size_t *idx, int nowrap)
{
size_t l;
int val_type = lua_type(L, val);
lua_pushvalue(L, val);
buf_write(L, (void*)&val_type, MAR_CHR, buf);
switch (val_type) {
case LUA_TBOOLEAN: {
int int_val = lua_toboolean(L, -1);
buf_write(L, (void*)&int_val, MAR_CHR, buf);
break;
}
case LUA_TSTRING: {
const char *str_val = lua_tolstring(L, -1, &l);
buf_write(L, (void*)&l, MAR_I32, buf);
buf_write(L, str_val, l, buf);
break;
}
case LUA_TNUMBER: {
lua_Number num_val = lua_tonumber(L, -1);
buf_write(L, (void*)&num_val, MAR_I64, buf);
break;
}
case LUA_TLIGHTUSERDATA: {
if(nowrap)
luaL_error(L, "light userdata not permitted");
void * ptr_val = lua_touserdata(L, -1);
long long v = (long long)ptr_val;
buf_write(L, (char*)&v, MAR_I64, buf);
break;
}
case LUA_TTABLE: {
int tag, ref;
lua_pushvalue(L, -1);
lua_rawget(L, SEEN_IDX);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
lua_pop(L, 1); /* pop nil */
if (luaL_getmetafield(L, -1, "__persist")) {
tag = MAR_TUSR;
lua_pushvalue(L, -2); /* self */
lua_call(L, 1, 1);
if (!lua_isfunction(L, -1)) {
luaL_error(L, "__persist must return a function");
}
lua_remove(L, -2); /* __persist */
lua_newtable(L);
lua_pushvalue(L, -2); /* callback */
lua_rawseti(L, -2, 1);
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx, nowrap);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
}
else {
tag = MAR_TVAL;
lua_pushvalue(L, -1);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, SEEN_IDX);
lua_pushvalue(L, -1);
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx, nowrap);
lua_pop(L, 1);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data,rec_buf.head, buf);
buf_done(L, &rec_buf);
}
}
break;
}
case LUA_TFUNCTION: {
int tag, ref;
lua_pushvalue(L, -1);
lua_rawget(L, SEEN_IDX);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
int i;
lua_Debug ar;
lua_pop(L, 1); /* pop nil */
lua_pushvalue(L, -1);
lua_getinfo(L, ">nuS", &ar);
//printf("Function name='%s' type='%s' nups=%d\n",ar.namewhat,ar.what,ar.nups);
if (ar.what[0] != 'L') {
luaL_error(L, "attempt to persist a C function '%s'", ar.name);
}
tag = MAR_TVAL;
lua_pushvalue(L, -1);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, SEEN_IDX);
lua_pushvalue(L, -1);
buf_init(L, &rec_buf);
lua_dump(L, (lua_Writer)buf_write, &rec_buf);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
lua_newtable(L);
for (i=1; i <= ar.nups; i++) {
#if LUA_VERSION_NUM > 501
const char * str=lua_getupvalue(L, -2, i);
if(!strncmp(str,"_ENV",4)) {
//printf("Stripping _ENV\n");
lua_pop(L,1);
lua_pushliteral(L,LEDA_ENV_MARKER);
}
#else
lua_getupvalue(L, -2, i);
#endif
lua_rawseti(L, -2, i);
}
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx, nowrap);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
}
break;
}
case LUA_TUSERDATA: {
int tag, ref;
lua_pushvalue(L, -1);
lua_rawget(L, SEEN_IDX);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
lua_pop(L, 1); /* pop nil */
if (!nowrap && luaL_getmetafield(L, -1, "__wrap")) {
tag = MAR_TUSR;
lua_pushvalue(L, -2);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, SEEN_IDX);
lua_pushvalue(L, -2);
lua_call(L, 1, 1);
if (!lua_isfunction(L, -1)) {
luaL_error(L, "__wrap must return a function");
}
lua_newtable(L);
lua_pushvalue(L, -2);
lua_rawseti(L, -2, 1);
lua_remove(L, -2);
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx, nowrap);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
} else if (luaL_getmetafield(L, -1, "__persist")) {
tag = MAR_TUSR;
lua_pushvalue(L, -2);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, SEEN_IDX);
lua_pushvalue(L, -2);
lua_call(L, 1, 1);
if (!lua_isfunction(L, -1)) {
luaL_error(L, "__persist must return a function");
}
lua_newtable(L);
lua_pushvalue(L, -2);
lua_rawseti(L, -2, 1);
lua_remove(L, -2);
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx, nowrap);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
}
else {
luaL_error(L, "attempt to encode userdata (no __wrap hook - or not permited - and no __persist hook)");
}
lua_pop(L, 1);
}
break;
}
case LUA_TNIL: break;
default:
luaL_error(L, "invalid value type (%s)", lua_typename(L, val_type));
}
lua_pop(L, 1);
}
static void mar_encode_value(lua_State *L, mar_Buffer *buf, int val, size_t *idx)
{
size_t l;
int val_type = lua_type(L, val);
lua_pushvalue(L, val);
buf_write(L, (void*)&val_type, MAR_CHR, buf);
switch (val_type) {
case LUA_TBOOLEAN: {
int int_val = lua_toboolean(L, -1);
buf_write(L, (void*)&int_val, MAR_CHR, buf);
break;
}
case LUA_TSTRING: {
const char *str_val = lua_tolstring(L, -1, &l);
buf_write(L, (void*)&l, MAR_I32, buf);
buf_write(L, str_val, l, buf);
break;
}
case LUA_TNUMBER: {
lua_Number num_val = lua_tonumber(L, -1);
buf_write(L, (void*)&num_val, MAR_I64, buf);
break;
}
case LUA_TTABLE: {
int tag, ref;
lua_pushvalue(L, -1);
lua_rawget(L, SEEN_IDX);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
lua_pop(L, 1); /* pop nil */
if (luaL_getmetafield(L, -1, "__persist")) {
tag = MAR_TUSR;
lua_pushvalue(L, -2); /* self */
lua_call(L, 1, 1);
if (!lua_isfunction(L, -1)) {
luaL_error(L, "__persist must return a function");
}
lua_remove(L, -2); /* __persist */
lua_newtable(L);
lua_pushvalue(L, -2); /* callback */
lua_rawseti(L, -2, 1);
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
}
else {
tag = MAR_TVAL;
lua_pushvalue(L, -1);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, SEEN_IDX);
lua_pushvalue(L, -1);
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx);
lua_pop(L, 1);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data,rec_buf.head, buf);
buf_done(L, &rec_buf);
}
}
break;
}
case LUA_TFUNCTION: {
int tag, ref;
lua_pushvalue(L, -1);
lua_rawget(L, SEEN_IDX);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
int i;
lua_Debug ar;
lua_pop(L, 1); /* pop nil */
lua_pushvalue(L, -1);
lua_getinfo(L, ">nuS", &ar);
if (ar.what[0] != 'L') {
luaL_error(L, "attempt to persist a C function '%s'", ar.name);
}
tag = MAR_TVAL;
lua_pushvalue(L, -1);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, SEEN_IDX);
lua_pushvalue(L, -1);
buf_init(L, &rec_buf);
lua_dump(L, (lua_Writer)buf_write, &rec_buf);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
lua_newtable(L);
for (i=1; i <= ar.nups; i++) {
lua_getupvalue(L, -2, i);
lua_rawseti(L, -2, i);
}
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
lua_pop(L, 1);
}
break;
}
case LUA_TUSERDATA: {
int tag, ref;
lua_pushvalue(L, -1);
lua_rawget(L, SEEN_IDX);
if (!lua_isnil(L, -1)) {
ref = lua_tointeger(L, -1);
tag = MAR_TREF;
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&ref, MAR_I32, buf);
lua_pop(L, 1);
}
else {
mar_Buffer rec_buf;
lua_pop(L, 1); /* pop nil */
if (luaL_getmetafield(L, -1, "__persist")) {
tag = MAR_TUSR;
lua_pushvalue(L, -2);
lua_pushinteger(L, (*idx)++);
lua_rawset(L, SEEN_IDX);
lua_pushvalue(L, -2);
lua_call(L, 1, 1);
if (!lua_isfunction(L, -1)) {
luaL_error(L, "__persist must return a function");
}
lua_newtable(L);
lua_pushvalue(L, -2);
lua_rawseti(L, -2, 1);
lua_remove(L, -2);
buf_init(L, &rec_buf);
mar_encode_table(L, &rec_buf, idx);
buf_write(L, (void*)&tag, MAR_CHR, buf);
buf_write(L, (void*)&rec_buf.head, MAR_I32, buf);
buf_write(L, rec_buf.data, rec_buf.head, buf);
buf_done(L, &rec_buf);
}
else {
luaL_error(L, "attempt to encode userdata (no __persist hook)");
}
lua_pop(L, 1);
}
break;
}
case LUA_TNIL: break;
default:
luaL_error(L, "invalid value type (%s)", lua_typename(L, val_type));
}
lua_pop(L, 1);
}
