Merge #1109

1109: fix readlink/readlinkat to return too long only when it is long r=asomers a=sendilkumarn

Currently readlink returns `ENAMETOOLONG` when the bufferSize is equal to the result size.  

Consider the below case

```c++
int main(int argc, const char * argv[]) {
    
    std::string filename = "/tmp/test-dir/target";
    
    size_t bufferSize = 9;
    char* buffer = new char[bufferSize];
    size_t rc = readlink (filename.c_str(), buffer, bufferSize); 
   // Since `readlink's` output depends on the `bufferSize`. If the`bufferSize` is 9 or greater than 
   // 9 then it will return 9 or else it will return `bufferSize` as the value of `rc`. 

    return 0;
}
```

Co-authored-by: Sendil Kumar <sendilkumarn@live.com>
Co-authored-by: Sendil Kumar N <sendilkumarn@live.com>

0 files changed, 0 insertions, 0 deletions