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fs : update validateOffsetLengthRead in utils.js #32896

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daemon1024 wants to merge 3 commits into from
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fs : update validateOffsetLengthRead in utils.js #32896

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57f8936
fs : update validateOffsetLengthRead in utils.js
daemon1024 Apr 17, 2020
89d4771
test: modify test for fs validateOffsetLengthRead
daemon1024 Apr 17, 2020
a39cbb6
test: addtional test for validateOffsetLengthRead
daemon1024 Apr 17, 2020
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fs : update validateOffsetLengthRead in utils.js
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@daemon1024
daemon1024 committed Apr 17, 2020
commit 57f893699f3962fb0f89258aa48f1f61621796f3
12 changes: 7 additions & 5 deletions lib/internal/fs/utils.js
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Original file line number Diff line number Diff line change
Expand Up @@ -539,13 +539,15 @@ function toUnixTimestamp(time, name = 'time') {

const validateOffsetLengthRead = hideStackFrames(
(offset, length, bufferLength) => {
if (offset < 0 || offset >= bufferLength) {
throw new ERR_OUT_OF_RANGE('offset',
`>= 0 && <= ${bufferLength}`, offset);
if (offset < 0) {
throw new ERR_OUT_OF_RANGE('offset', '>= 0', offset);
}
if (length < 0 || offset + length > bufferLength) {
if (length < 0) {
throw new ERR_OUT_OF_RANGE('length', '>= 0', length);
}
if (offset + length > bufferLength) {
throw new ERR_OUT_OF_RANGE('length',
`>= 0 && <= ${bufferLength - offset}`, length);
`<= ${bufferLength - offset}`, length);
}
}
);
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