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src: add GetValidatedFd() to node_file #49903

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src: add GetValidatedFd() to node_file #49903

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18 changes: 18 additions & 0 deletions src/node_file.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,24 @@ inline int64_t GetOffset(Local<Value> value) {
return IsSafeJsInt(value) ? value.As<Integer>()->Value() : -1;
}

inline int GetValidatedFd(Environment* env, Local<Value> value) {
if (!value->IsInt32()) {
env->isolate()->ThrowException(ERR_INVALID_ARG_TYPE(
env->isolate(), "Invalid argument. The fd must be int32."));
return 1 << 30;
}

const int fd = value.As<Int32>()->Value();

if (fd < 0 || fd > INT32_MAX) {
env->isolate()->ThrowException(ERR_OUT_OF_RANGE(
env->isolate(), "It must be >= 0 && <= INT32_MAX. Received %d", fd));
return 1 << 30;
}

return fd;
}

static const char* get_fs_func_name_by_type(uv_fs_type req_type) {
switch (req_type) {
#define FS_TYPE_TO_NAME(type, name) \
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