Unexpected Permission denied error on file sharing volume

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I am getting recurring errors running code on macOS 15.1 on arm that is using a volume mounted from a machine running macOS 14.7.1 on x86. The code I am running copies files to the remote volume and deletes files and directories on the remote volume. The files and directories it deletes are typically files it previously had copied.

The problem is that I get permission failures trying to delete certain directories.

After this happens, if I try to list the directory using Terminal on the 15.1 system, I get a strange error:

ls -lA TestVAppearances.app/Contents/runtime-arm/Contents
total 0
ls: fts_read: Permission denied

If I try to list the directory on the target (14.7.1) system, there is no error:

TestVAppearances.app/Contents/runtime-arm/Contents:
total 0

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Answer 1

DTS Engineer OP

Apple

14h

So, let me start with the error here:

ls: fts_read: Permission denied

"fts" ("File Traversal Stream") is basically the Unix/POSIX equivalent to Foundation NSDirectoryEnumerator. The details are documented in it's man page ("man fts"), but "fts_read" returns the next file system object in the iteration set. So "Permission denied" would mean you weren't able to read the contents fo that directory.

Moving to here:

The problem is that I get permission failures trying to delete certain directories.

How were you deleting the directories?
What actually failed, particularly in relation to the directory you're trying to list?

After this happens, if I try to list the directory using Terminal on the 15.1 system, I get a strange error:

Do you get the same failure if you open a new terminal window an navigate to the directory?
Do you get the same failure if you unmount and remount the SMB volume?
What do you see if you list the contents of the parent directory?

__
Kevin Elliott
DTS Engineer, CoreOS/Hardware

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