Implement cp about coreutils HOT 10 OPEN

I will start with this.

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Nice, have fun 😄

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@GrayJack i ran into a problem here. Maybe you know how to solve it. cp -p -R symlink should copy a symlink and preserve its metadata. But apparently there is no way in Rust to copy a symlink. You can only create one. But also you can not set a file's metadata, at least i could not find any way to do so. Do you have an idea?

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I have to look into that, never done it

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How do you preserve the metadata on the other types of file?

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fs::copy() copies a file with metadata. And to not preserve it i use io::copy(). For dirs i have the same problem as with symlinks. There is a function in fs to set permissions but i found nothing about modified, creation date etc.

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Did you found out any more info on how to do this?

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Aha!!! Found it, to preserve attributes of a link you have to hardlink the files

So, if you want to copy a symlink, you have to hardlink the link to another path, and hardlink will preserve the attributes

fs::hard_link() function does that

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Yes, but a hardlink is not a symlink if i understood correctly.

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Yes, but all code that I saw (FreeBSD, NetBSD and uutils) does that when preserving a copy a symlink preserving metadata

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