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0 pointsbradleyland15y ago0 comments

I said specifically in my post that OS X is UNIX 03 certified.

http://www.unix.org/version3/

The Open Group owns the Unix trademark, which is what we're all referring to.

http://en.wikipedia.org/wiki/The_Open_Group

So I don't know what UNIX means to you, but where I come from, it's based on a certification that adheres to a defined set of standards.

What you posted is an unresolved bug report that doesn't prove or disprove that OS X is Unix certified.

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dmm15y ago

I'm well aware of what UNIX 03 means. Are you? The core of it is IEEE Std 1003.1. Here's a quote from the Rationale section of the rename(2) page from IEEE Std 1003.1, 2004 edition:

"This rename() function is equivalent for regular files to that defined by the ISO C standard. Its inclusion here expands that definition to include actions on directories and specifies behavior when the new parameter names a file that already exists. That specification requires that the action of the function be atomic."

So to comply with the Single Unix specification, rename(2) must be atomic. The rename(2) function on OS X has been empirically shown to not be atomic. What reasonable conclusions can be drawn here?

bradleylandOP15y ago

The reasonable conclusion is that a bug exists where -- under certain circumstances -- rename(2) fails in a way that is not expected. It's a bug. It's not as if rename(2) is intentionally implemented in a way that is not atomic; it's that there is a bug. Should it be fixed? Yes. Does it mean that OS X is not Unix? No.

dmm15y ago

> Does it mean that OS X is not Unix? No.

What exactly are you arguing? What is your definition of unix? A label purchased from the Open Group or an implementation of a specification?

If it's the former, I completely agree with you, OS X is UNIX. If it's the latter, what standard of proof would it take to convince you otherwise?

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0 pointsbradleyland15y ago0 comments

I said specifically in my post that OS X is UNIX 03 certified.

http://www.unix.org/version3/

The Open Group owns the Unix trademark, which is what we're all referring to.

http://en.wikipedia.org/wiki/The_Open_Group

So I don't know what UNIX means to you, but where I come from, it's based on a certification that adheres to a defined set of standards.

What you posted is an unresolved bug report that doesn't prove or disprove that OS X is Unix certified.

0 comments

dmm15y ago

I'm well aware of what UNIX 03 means. Are you? The core of it is IEEE Std 1003.1. Here's a quote from the Rationale section of the rename(2) page from IEEE Std 1003.1, 2004 edition:

So to comply with the Single Unix specification, rename(2) must be atomic. The rename(2) function on OS X has been empirically shown to not be atomic. What reasonable conclusions can be drawn here?

bradleylandOP15y ago

dmm15y ago

> Does it mean that OS X is not Unix? No.

What exactly are you arguing? What is your definition of unix? A label purchased from the Open Group or an implementation of a specification?

If it's the former, I completely agree with you, OS X is UNIX. If it's the latter, what standard of proof would it take to convince you otherwise?

1 more reply

j / k navigate · click thread line to collapse