Re: C rename returns -1 but error text says no error exists

On 23/06/2010, at 5:44 AM, <Rick.Chevalier@xxxxxxxxxxxxxxx> <Rick.Chevalier@xxxxxxxxxxxxxxx > wrote:

I'm trying to determine what I'm doing wrong with the C rename function. I am trying to rename a file on the IFS. The rename function returns -1 which I understand to mean an error. I then use __errno and strerror to return the error text. What I get is a error number of 0 and a text of no error exits. There are no messages in the job log. I'm at a loss where to look next.

Here's the pertinent code:

Except you didn't show the most important piece which is your prototype for the rename() function.

The C runtime rename() function expects lib/file (i.e., *FILE object) names by default. When compiling C for stream file support rename() maps to either Qp0lRenameKeep() or Qp0lRenameUnlink() depending on compiler options--which of the three variants are you using?

Examine the documentation for rename() in the C Run-time Library Functions manual. Note that it does not list any errno values? This indicates that it returns -1 on error an no other information.

When rename() is mapped to one of the POSIX functions then errno is set. This makes me think you are using the C run-time rename() which will never work on a stream file.

Regards,
Simon Coulter.
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