/
node_wasi.cc
1875 lines (1643 loc) · 64.4 KB
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node_wasi.cc
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#include "env-inl.h"
#include "base_object-inl.h"
#include "debug_utils.h"
#include "memory_tracker-inl.h"
#include "node_mem-inl.h"
#include "util-inl.h"
#include "node.h"
#include "uv.h"
#include "uvwasi.h"
#include "node_wasi.h"
namespace node {
namespace wasi {
static inline bool is_access_oob(size_t mem_size,
uint32_t offset,
uint32_t buf_size) {
return offset + buf_size > mem_size;
}
template <typename... Args>
inline void Debug(WASI* wasi, Args&&... args) {
Debug(wasi->env(), DebugCategory::WASI, std::forward<Args>(args)...);
}
#define RETURN_IF_BAD_ARG_COUNT(args, expected) \
do { \
if ((args).Length() != (expected)) { \
(args).GetReturnValue().Set(UVWASI_EINVAL); \
return; \
} \
} while (0)
#define CHECK_TO_TYPE_OR_RETURN(args, input, type, result) \
do { \
if (!(input)->Is##type()) { \
(args).GetReturnValue().Set(UVWASI_EINVAL); \
return; \
} \
(result) = (input).As<type>()->Value(); \
} while (0)
#define UNWRAP_BIGINT_OR_RETURN(args, input, type, result) \
do { \
if (!(input)->IsBigInt()) { \
(args).GetReturnValue().Set(UVWASI_EINVAL); \
return; \
} \
Local<BigInt> js_value = (input).As<BigInt>(); \
bool lossless; \
(result) = js_value->type ## Value(&lossless); \
} while (0)
#define GET_BACKING_STORE_OR_RETURN(wasi, args, mem_ptr, mem_size) \
do { \
uvwasi_errno_t err = (wasi)->backingStore((mem_ptr), (mem_size)); \
if (err != UVWASI_ESUCCESS) { \
(args).GetReturnValue().Set(err); \
return; \
} \
} while (0)
#define CHECK_BOUNDS_OR_RETURN(args, mem_size, offset, buf_size) \
do { \
if (is_access_oob((mem_size), (offset), (buf_size))) { \
(args).GetReturnValue().Set(UVWASI_EOVERFLOW); \
return; \
} \
} while (0)
using v8::Array;
using v8::ArrayBuffer;
using v8::BackingStore;
using v8::BigInt;
using v8::Context;
using v8::Exception;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::MaybeLocal;
using v8::Object;
using v8::String;
using v8::Uint32;
using v8::Value;
static MaybeLocal<Value> WASIException(Local<Context> context,
int errorno,
const char* syscall) {
Isolate* isolate = context->GetIsolate();
Environment* env = Environment::GetCurrent(context);
CHECK_NOT_NULL(env);
const char* err_name = uvwasi_embedder_err_code_to_string(errorno);
Local<String> js_code = OneByteString(isolate, err_name);
Local<String> js_syscall = OneByteString(isolate, syscall);
Local<String> js_msg = js_code;
js_msg =
String::Concat(isolate, js_msg, FIXED_ONE_BYTE_STRING(isolate, ", "));
js_msg = String::Concat(isolate, js_msg, js_syscall);
Local<Object> e =
Exception::Error(js_msg)->ToObject(context)
.ToLocalChecked();
if (e->Set(context,
env->errno_string(),
Integer::New(isolate, errorno)).IsNothing() ||
e->Set(context, env->code_string(), js_code).IsNothing() ||
e->Set(context, env->syscall_string(), js_syscall).IsNothing()) {
return MaybeLocal<Value>();
}
return e;
}
WASI::WASI(Environment* env,
Local<Object> object,
uvwasi_options_t* options) : BaseObject(env, object) {
MakeWeak();
alloc_info_ = MakeAllocator();
options->allocator = &alloc_info_;
int err = uvwasi_init(&uvw_, options);
if (err != UVWASI_ESUCCESS) {
Local<Context> context = env->context();
MaybeLocal<Value> exception = WASIException(context, err, "uvwasi_init");
if (exception.IsEmpty())
return;
context->GetIsolate()->ThrowException(exception.ToLocalChecked());
}
}
WASI::~WASI() {
uvwasi_destroy(&uvw_);
CHECK_EQ(current_uvwasi_memory_, 0);
}
void WASI::MemoryInfo(MemoryTracker* tracker) const {
tracker->TrackField("memory", memory_);
tracker->TrackFieldWithSize("uvwasi_memory", current_uvwasi_memory_);
}
void WASI::CheckAllocatedSize(size_t previous_size) const {
CHECK_GE(current_uvwasi_memory_, previous_size);
}
void WASI::IncreaseAllocatedSize(size_t size) {
current_uvwasi_memory_ += size;
}
void WASI::DecreaseAllocatedSize(size_t size) {
current_uvwasi_memory_ -= size;
}
void WASI::New(const FunctionCallbackInfo<Value>& args) {
CHECK(args.IsConstructCall());
CHECK_EQ(args.Length(), 3);
CHECK(args[0]->IsArray());
CHECK(args[1]->IsArray());
CHECK(args[2]->IsArray());
Environment* env = Environment::GetCurrent(args);
Local<Context> context = env->context();
Local<Array> argv = args[0].As<Array>();
const uint32_t argc = argv->Length();
uvwasi_options_t options;
options.fd_table_size = 3;
options.argc = argc;
options.argv = argc == 0 ? nullptr : new char*[argc];
for (uint32_t i = 0; i < argc; i++) {
auto arg = argv->Get(context, i).ToLocalChecked();
CHECK(arg->IsString());
node::Utf8Value str(env->isolate(), arg);
options.argv[i] = strdup(*str);
CHECK_NOT_NULL(options.argv[i]);
}
Local<Array> env_pairs = args[1].As<Array>();
const uint32_t envc = env_pairs->Length();
options.envp = new char*[envc + 1];
for (uint32_t i = 0; i < envc; i++) {
auto pair = env_pairs->Get(context, i).ToLocalChecked();
CHECK(pair->IsString());
node::Utf8Value str(env->isolate(), pair);
options.envp[i] = strdup(*str);
CHECK_NOT_NULL(options.envp[i]);
}
options.envp[envc] = nullptr;
Local<Array> preopens = args[2].As<Array>();
CHECK_EQ(preopens->Length() % 2, 0);
options.preopenc = preopens->Length() / 2;
options.preopens = Calloc<uvwasi_preopen_t>(options.preopenc);
int index = 0;
for (uint32_t i = 0; i < preopens->Length(); i += 2) {
auto mapped = preopens->Get(context, i).ToLocalChecked();
auto real = preopens->Get(context, i + 1).ToLocalChecked();
CHECK(mapped->IsString());
CHECK(real->IsString());
node::Utf8Value mapped_path(env->isolate(), mapped);
node::Utf8Value real_path(env->isolate(), real);
options.preopens[index].mapped_path = strdup(*mapped_path);
CHECK_NOT_NULL(options.preopens[index].mapped_path);
options.preopens[index].real_path = strdup(*real_path);
CHECK_NOT_NULL(options.preopens[index].real_path);
index++;
}
new WASI(env, args.This(), &options);
if (options.argv != nullptr) {
for (uint32_t i = 0; i < argc; i++)
free(options.argv[i]);
delete[] options.argv;
}
if (options.envp != nullptr) {
for (uint32_t i = 0; options.envp[i]; i++)
free(options.envp[i]);
delete[] options.envp;
}
if (options.preopens != nullptr) {
for (uint32_t i = 0; i < options.preopenc; i++) {
free(options.preopens[i].mapped_path);
free(options.preopens[i].real_path);
}
delete[] options.preopens;
}
}
void WASI::ArgsGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t argv_offset;
uint32_t argv_buf_offset;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, argv_offset);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, argv_buf_offset);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "args_get(%d, %d)\n", argv_offset, argv_buf_offset);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args,
mem_size,
argv_buf_offset,
wasi->uvw_.argv_buf_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, argv_offset, wasi->uvw_.argc * 4);
std::vector<char*> argv(wasi->uvw_.argc);
char* argv_buf = &memory[argv_buf_offset];
uvwasi_errno_t err = uvwasi_args_get(&wasi->uvw_, argv.data(), argv_buf);
if (err == UVWASI_ESUCCESS) {
for (size_t i = 0; i < wasi->uvw_.argc; i++) {
uint32_t offset = argv_buf_offset + (argv[i] - argv[0]);
wasi->writeUInt32(memory, offset, argv_offset + (i * 4));
}
}
args.GetReturnValue().Set(err);
}
void WASI::ArgsSizesGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t argc_offset;
uint32_t argv_buf_offset;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, argc_offset);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, argv_buf_offset);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "args_sizes_get(%d, %d)\n", argc_offset, argv_buf_offset);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, argc_offset, 4);
CHECK_BOUNDS_OR_RETURN(args, mem_size, argv_buf_offset, 4);
size_t argc;
size_t argv_buf_size;
uvwasi_errno_t err = uvwasi_args_sizes_get(&wasi->uvw_,
&argc,
&argv_buf_size);
if (err == UVWASI_ESUCCESS) {
wasi->writeUInt32(memory, argc, argc_offset);
wasi->writeUInt32(memory, argv_buf_size, argv_buf_offset);
}
args.GetReturnValue().Set(err);
}
void WASI::ClockResGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t clock_id;
uint32_t resolution_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, clock_id);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, resolution_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "clock_res_get(%d, %d)\n", clock_id, resolution_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, resolution_ptr, 8);
uvwasi_timestamp_t resolution;
uvwasi_errno_t err = uvwasi_clock_res_get(&wasi->uvw_,
clock_id,
&resolution);
if (err == UVWASI_ESUCCESS)
wasi->writeUInt64(memory, resolution, resolution_ptr);
args.GetReturnValue().Set(err);
}
void WASI::ClockTimeGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t clock_id;
uint64_t precision;
uint32_t time_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 3);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, clock_id);
UNWRAP_BIGINT_OR_RETURN(args, args[1], Uint64, precision);
CHECK_TO_TYPE_OR_RETURN(args, args[2], Uint32, time_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "clock_time_get(%d, %d, %d)\n", clock_id, precision, time_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, time_ptr, 8);
uvwasi_timestamp_t time;
uvwasi_errno_t err = uvwasi_clock_time_get(&wasi->uvw_,
clock_id,
precision,
&time);
if (err == UVWASI_ESUCCESS)
wasi->writeUInt64(memory, time, time_ptr);
args.GetReturnValue().Set(err);
}
void WASI::EnvironGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t environ_offset;
uint32_t environ_buf_offset;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, environ_offset);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, environ_buf_offset);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "environ_get(%d, %d)\n", environ_offset, environ_buf_offset);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args,
mem_size,
environ_buf_offset,
wasi->uvw_.env_buf_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, environ_offset, wasi->uvw_.envc * 4);
std::vector<char*> environment(wasi->uvw_.envc);
char* environ_buf = &memory[environ_buf_offset];
uvwasi_errno_t err = uvwasi_environ_get(&wasi->uvw_,
environment.data(),
environ_buf);
if (err == UVWASI_ESUCCESS) {
for (size_t i = 0; i < wasi->uvw_.envc; i++) {
uint32_t offset = environ_buf_offset + (environment[i] - environment[0]);
wasi->writeUInt32(memory, offset, environ_offset + (i * 4));
}
}
args.GetReturnValue().Set(err);
}
void WASI::EnvironSizesGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t envc_offset;
uint32_t env_buf_offset;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, envc_offset);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, env_buf_offset);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "environ_sizes_get(%d, %d)\n", envc_offset, env_buf_offset);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, envc_offset, 4);
CHECK_BOUNDS_OR_RETURN(args, mem_size, env_buf_offset, 4);
size_t envc;
size_t env_buf_size;
uvwasi_errno_t err = uvwasi_environ_sizes_get(&wasi->uvw_,
&envc,
&env_buf_size);
if (err == UVWASI_ESUCCESS) {
wasi->writeUInt32(memory, envc, envc_offset);
wasi->writeUInt32(memory, env_buf_size, env_buf_offset);
}
args.GetReturnValue().Set(err);
}
void WASI::FdAdvise(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint64_t offset;
uint64_t len;
uint8_t advice;
RETURN_IF_BAD_ARG_COUNT(args, 4);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
UNWRAP_BIGINT_OR_RETURN(args, args[1], Uint64, offset);
UNWRAP_BIGINT_OR_RETURN(args, args[2], Uint64, len);
CHECK_TO_TYPE_OR_RETURN(args, args[3], Uint32, advice);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_advise(%d, %d, %d, %d)\n", fd, offset, len, advice);
uvwasi_errno_t err = uvwasi_fd_advise(&wasi->uvw_, fd, offset, len, advice);
args.GetReturnValue().Set(err);
}
void WASI::FdAllocate(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint64_t offset;
uint64_t len;
RETURN_IF_BAD_ARG_COUNT(args, 3);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
UNWRAP_BIGINT_OR_RETURN(args, args[1], Uint64, offset);
UNWRAP_BIGINT_OR_RETURN(args, args[2], Uint64, len);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_allocate(%d, %d, %d)\n", fd, offset, len);
uvwasi_errno_t err = uvwasi_fd_allocate(&wasi->uvw_, fd, offset, len);
args.GetReturnValue().Set(err);
}
void WASI::FdClose(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
RETURN_IF_BAD_ARG_COUNT(args, 1);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_close(%d)\n", fd);
uvwasi_errno_t err = uvwasi_fd_close(&wasi->uvw_, fd);
args.GetReturnValue().Set(err);
}
void WASI::FdDatasync(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
RETURN_IF_BAD_ARG_COUNT(args, 1);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_datasync(%d)\n", fd);
uvwasi_errno_t err = uvwasi_fd_datasync(&wasi->uvw_, fd);
args.GetReturnValue().Set(err);
}
void WASI::FdFdstatGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t buf;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, buf);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_fdstat_get(%d, %d)\n", fd, buf);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, buf, 24);
uvwasi_fdstat_t stats;
uvwasi_errno_t err = uvwasi_fd_fdstat_get(&wasi->uvw_, fd, &stats);
if (err == UVWASI_ESUCCESS) {
wasi->writeUInt8(memory, stats.fs_filetype, buf);
wasi->writeUInt16(memory, stats.fs_flags, buf + 2);
wasi->writeUInt64(memory, stats.fs_rights_base, buf + 8);
wasi->writeUInt64(memory, stats.fs_rights_inheriting, buf + 16);
}
args.GetReturnValue().Set(err);
}
void WASI::FdFdstatSetFlags(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint16_t flags;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, flags);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_fdstat_set_flags(%d, %d)\n", fd, flags);
uvwasi_errno_t err = uvwasi_fd_fdstat_set_flags(&wasi->uvw_, fd, flags);
args.GetReturnValue().Set(err);
}
void WASI::FdFdstatSetRights(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint64_t fs_rights_base;
uint64_t fs_rights_inheriting;
RETURN_IF_BAD_ARG_COUNT(args, 3);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
UNWRAP_BIGINT_OR_RETURN(args, args[1], Uint64, fs_rights_base);
UNWRAP_BIGINT_OR_RETURN(args, args[2], Uint64, fs_rights_inheriting);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi,
"fd_fdstat_set_rights(%d, %d, %d)\n",
fd,
fs_rights_base,
fs_rights_inheriting);
uvwasi_errno_t err = uvwasi_fd_fdstat_set_rights(&wasi->uvw_,
fd,
fs_rights_base,
fs_rights_inheriting);
args.GetReturnValue().Set(err);
}
void WASI::FdFilestatGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t buf;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, buf);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_filestat_get(%d, %d)\n", fd, buf);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, buf, 64);
uvwasi_filestat_t stats;
uvwasi_errno_t err = uvwasi_fd_filestat_get(&wasi->uvw_, fd, &stats);
if (err == UVWASI_ESUCCESS) {
wasi->writeUInt64(memory, stats.st_dev, buf);
wasi->writeUInt64(memory, stats.st_ino, buf + 8);
wasi->writeUInt8(memory, stats.st_filetype, buf + 16);
wasi->writeUInt64(memory, stats.st_nlink, buf + 24);
wasi->writeUInt64(memory, stats.st_size, buf + 32);
wasi->writeUInt64(memory, stats.st_atim, buf + 40);
wasi->writeUInt64(memory, stats.st_mtim, buf + 48);
wasi->writeUInt64(memory, stats.st_ctim, buf + 56);
}
args.GetReturnValue().Set(err);
}
void WASI::FdFilestatSetSize(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint64_t st_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
UNWRAP_BIGINT_OR_RETURN(args, args[1], Uint64, st_size);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_filestat_set_size(%d, %d)\n", fd, st_size);
uvwasi_errno_t err = uvwasi_fd_filestat_set_size(&wasi->uvw_, fd, st_size);
args.GetReturnValue().Set(err);
}
void WASI::FdFilestatSetTimes(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint64_t st_atim;
uint64_t st_mtim;
uint16_t fst_flags;
RETURN_IF_BAD_ARG_COUNT(args, 4);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
UNWRAP_BIGINT_OR_RETURN(args, args[1], Uint64, st_atim);
UNWRAP_BIGINT_OR_RETURN(args, args[2], Uint64, st_mtim);
CHECK_TO_TYPE_OR_RETURN(args, args[3], Uint32, fst_flags);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi,
"fd_filestat_set_times(%d, %d, %d, %d)\n",
fd,
st_atim,
st_mtim,
fst_flags);
uvwasi_errno_t err = uvwasi_fd_filestat_set_times(&wasi->uvw_,
fd,
st_atim,
st_mtim,
fst_flags);
args.GetReturnValue().Set(err);
}
void WASI::FdPread(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t iovs_ptr;
uint32_t iovs_len;
uint64_t offset;
uint32_t nread_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 5);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, iovs_ptr);
CHECK_TO_TYPE_OR_RETURN(args, args[2], Uint32, iovs_len);
UNWRAP_BIGINT_OR_RETURN(args, args[3], Uint64, offset);
CHECK_TO_TYPE_OR_RETURN(args, args[4], Uint32, nread_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi,
"uvwasi_fd_pread(%d, %d, %d, %d, %d)\n",
fd,
iovs_ptr,
iovs_len,
offset,
nread_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, iovs_ptr, iovs_len * 8);
CHECK_BOUNDS_OR_RETURN(args, mem_size, nread_ptr, 4);
uvwasi_iovec_t* iovs = UncheckedCalloc<uvwasi_iovec_t>(iovs_len);
if (iovs == nullptr) {
args.GetReturnValue().Set(UVWASI_ENOMEM);
return;
}
for (uint32_t i = 0; i < iovs_len; ++i) {
uint32_t buf_ptr;
uint32_t buf_len;
wasi->readUInt32(memory, &buf_ptr, iovs_ptr);
wasi->readUInt32(memory, &buf_len, iovs_ptr + 4);
if (is_access_oob(mem_size, buf_ptr, buf_len)) {
free(iovs);
args.GetReturnValue().Set(UVWASI_EOVERFLOW);
return;
}
iovs_ptr += 8;
iovs[i].buf = static_cast<void*>(&memory[buf_ptr]);
iovs[i].buf_len = buf_len;
}
size_t nread;
uvwasi_errno_t err = uvwasi_fd_pread(&wasi->uvw_,
fd,
iovs,
iovs_len,
offset,
&nread);
if (err == UVWASI_ESUCCESS)
wasi->writeUInt32(memory, nread, nread_ptr);
free(iovs);
args.GetReturnValue().Set(err);
}
void WASI::FdPrestatGet(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t buf;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, buf);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_prestat_get(%d, %d)\n", fd, buf);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, buf, 8);
uvwasi_prestat_t prestat;
uvwasi_errno_t err = uvwasi_fd_prestat_get(&wasi->uvw_, fd, &prestat);
if (err == UVWASI_ESUCCESS) {
wasi->writeUInt32(memory, prestat.pr_type, buf);
wasi->writeUInt32(memory, prestat.u.dir.pr_name_len, buf + 4);
}
args.GetReturnValue().Set(err);
}
void WASI::FdPrestatDirName(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t path_ptr;
uint32_t path_len;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 3);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, path_ptr);
CHECK_TO_TYPE_OR_RETURN(args, args[2], Uint32, path_len);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_prestat_dir_name(%d, %d, %d)\n", fd, path_ptr, path_len);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, path_ptr, path_len);
uvwasi_errno_t err = uvwasi_fd_prestat_dir_name(&wasi->uvw_,
fd,
&memory[path_ptr],
path_len);
args.GetReturnValue().Set(err);
}
void WASI::FdPwrite(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t iovs_ptr;
uint32_t iovs_len;
uint64_t offset;
uint32_t nwritten_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 5);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, iovs_ptr);
CHECK_TO_TYPE_OR_RETURN(args, args[2], Uint32, iovs_len);
UNWRAP_BIGINT_OR_RETURN(args, args[3], Uint64, offset);
CHECK_TO_TYPE_OR_RETURN(args, args[4], Uint32, nwritten_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi,
"uvwasi_fd_pwrite(%d, %d, %d, %d, %d)\n",
fd,
iovs_ptr,
iovs_len,
offset,
nwritten_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, iovs_ptr, iovs_len * 8);
CHECK_BOUNDS_OR_RETURN(args, mem_size, nwritten_ptr, 4);
uvwasi_ciovec_t* iovs = UncheckedCalloc<uvwasi_ciovec_t>(iovs_len);
if (iovs == nullptr) {
args.GetReturnValue().Set(UVWASI_ENOMEM);
return;
}
for (uint32_t i = 0; i < iovs_len; ++i) {
uint32_t buf_ptr;
uint32_t buf_len;
wasi->readUInt32(memory, &buf_ptr, iovs_ptr);
wasi->readUInt32(memory, &buf_len, iovs_ptr + 4);
if (is_access_oob(mem_size, buf_ptr, buf_len)) {
free(iovs);
args.GetReturnValue().Set(UVWASI_EOVERFLOW);
return;
}
iovs_ptr += 8;
iovs[i].buf = static_cast<void*>(&memory[buf_ptr]);
iovs[i].buf_len = buf_len;
}
size_t nwritten;
uvwasi_errno_t err = uvwasi_fd_pwrite(&wasi->uvw_,
fd,
iovs,
iovs_len,
offset,
&nwritten);
if (err == UVWASI_ESUCCESS)
wasi->writeUInt32(memory, nwritten, nwritten_ptr);
free(iovs);
args.GetReturnValue().Set(err);
}
void WASI::FdRead(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t iovs_ptr;
uint32_t iovs_len;
uint32_t nread_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 4);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, iovs_ptr);
CHECK_TO_TYPE_OR_RETURN(args, args[2], Uint32, iovs_len);
CHECK_TO_TYPE_OR_RETURN(args, args[3], Uint32, nread_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_read(%d, %d, %d, %d)\n", fd, iovs_ptr, iovs_len, nread_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, iovs_ptr, iovs_len * 8);
CHECK_BOUNDS_OR_RETURN(args, mem_size, nread_ptr, 4);
uvwasi_iovec_t* iovs = UncheckedCalloc<uvwasi_iovec_t>(iovs_len);
if (iovs == nullptr) {
args.GetReturnValue().Set(UVWASI_ENOMEM);
return;
}
for (uint32_t i = 0; i < iovs_len; ++i) {
uint32_t buf_ptr;
uint32_t buf_len;
wasi->readUInt32(memory, &buf_ptr, iovs_ptr);
wasi->readUInt32(memory, &buf_len, iovs_ptr + 4);
if (is_access_oob(mem_size, buf_ptr, buf_len)) {
free(iovs);
args.GetReturnValue().Set(UVWASI_EOVERFLOW);
return;
}
iovs_ptr += 8;
iovs[i].buf = static_cast<void*>(&memory[buf_ptr]);
iovs[i].buf_len = buf_len;
}
size_t nread;
uvwasi_errno_t err = uvwasi_fd_read(&wasi->uvw_,
fd,
iovs,
iovs_len,
&nread);
if (err == UVWASI_ESUCCESS)
wasi->writeUInt32(memory, nread, nread_ptr);
free(iovs);
args.GetReturnValue().Set(err);
}
void WASI::FdReaddir(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t buf_ptr;
uint32_t buf_len;
uint64_t cookie;
uint32_t bufused_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 5);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, buf_ptr);
CHECK_TO_TYPE_OR_RETURN(args, args[2], Uint32, buf_len);
UNWRAP_BIGINT_OR_RETURN(args, args[3], Uint64, cookie);
CHECK_TO_TYPE_OR_RETURN(args, args[4], Uint32, bufused_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi,
"uvwasi_fd_readdir(%d, %d, %d, %d, %d)\n",
fd,
buf_ptr,
buf_len,
cookie,
bufused_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, buf_ptr, buf_len);
CHECK_BOUNDS_OR_RETURN(args, mem_size, bufused_ptr, 4);
size_t bufused;
uvwasi_errno_t err = uvwasi_fd_readdir(&wasi->uvw_,
fd,
&memory[buf_ptr],
buf_len,
cookie,
&bufused);
if (err == UVWASI_ESUCCESS)
wasi->writeUInt32(memory, bufused, bufused_ptr);
args.GetReturnValue().Set(err);
}
void WASI::FdRenumber(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t from;
uint32_t to;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, from);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, to);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_renumber(%d, %d)\n", from, to);
uvwasi_errno_t err = uvwasi_fd_renumber(&wasi->uvw_, from, to);
args.GetReturnValue().Set(err);
}
void WASI::FdSeek(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
int64_t offset;
uint8_t whence;
uint32_t newoffset_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 4);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
UNWRAP_BIGINT_OR_RETURN(args, args[1], Int64, offset);
CHECK_TO_TYPE_OR_RETURN(args, args[2], Uint32, whence);
CHECK_TO_TYPE_OR_RETURN(args, args[3], Uint32, newoffset_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_seek(%d, %d, %d, %d)\n", fd, offset, whence, newoffset_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, newoffset_ptr, 8);
uvwasi_filesize_t newoffset;
uvwasi_errno_t err = uvwasi_fd_seek(&wasi->uvw_,
fd,
offset,
whence,
&newoffset);
if (err == UVWASI_ESUCCESS)
wasi->writeUInt64(memory, newoffset, newoffset_ptr);
args.GetReturnValue().Set(err);
}
void WASI::FdSync(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
RETURN_IF_BAD_ARG_COUNT(args, 1);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_sync(%d)\n", fd);
uvwasi_errno_t err = uvwasi_fd_sync(&wasi->uvw_, fd);
args.GetReturnValue().Set(err);
}
void WASI::FdTell(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t offset_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 2);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, offset_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi, "fd_tell(%d, %d)\n", fd, offset_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, offset_ptr, 8);
uvwasi_filesize_t offset;
uvwasi_errno_t err = uvwasi_fd_tell(&wasi->uvw_, fd, &offset);
if (err == UVWASI_ESUCCESS)
wasi->writeUInt64(memory, offset, offset_ptr);
args.GetReturnValue().Set(err);
}
void WASI::FdWrite(const FunctionCallbackInfo<Value>& args) {
WASI* wasi;
uint32_t fd;
uint32_t iovs_ptr;
uint32_t iovs_len;
uint32_t nwritten_ptr;
char* memory;
size_t mem_size;
RETURN_IF_BAD_ARG_COUNT(args, 4);
CHECK_TO_TYPE_OR_RETURN(args, args[0], Uint32, fd);
CHECK_TO_TYPE_OR_RETURN(args, args[1], Uint32, iovs_ptr);
CHECK_TO_TYPE_OR_RETURN(args, args[2], Uint32, iovs_len);
CHECK_TO_TYPE_OR_RETURN(args, args[3], Uint32, nwritten_ptr);
ASSIGN_OR_RETURN_UNWRAP(&wasi, args.This());
Debug(wasi,
"fd_write(%d, %d, %d, %d)\n",
fd,
iovs_ptr,
iovs_len,
nwritten_ptr);
GET_BACKING_STORE_OR_RETURN(wasi, args, &memory, &mem_size);
CHECK_BOUNDS_OR_RETURN(args, mem_size, iovs_ptr, iovs_len * 8);
CHECK_BOUNDS_OR_RETURN(args, mem_size, nwritten_ptr, 4);
uvwasi_ciovec_t* iovs = UncheckedCalloc<uvwasi_ciovec_t>(iovs_len);
if (iovs == nullptr) {
args.GetReturnValue().Set(UVWASI_ENOMEM);
return;
}
for (uint32_t i = 0; i < iovs_len; ++i) {
uint32_t buf_ptr;
uint32_t buf_len;
wasi->readUInt32(memory, &buf_ptr, iovs_ptr);
wasi->readUInt32(memory, &buf_len, iovs_ptr + 4);