Recursive copy behaviour - nesting the source directory inside the destination

[barneda]

Description

The zopen version of the cp command behaves differently from the standard z/OS /bin/cp when performing recursive copies with a trailing slash on the source directory. The zopen version creates an extra layer of directory structure, nesting the source directory inside the destination, while the standard /bin/cp copies the contents directly into the destination.

Test Setup

Initial directory structure:

/u/myuser/ZOPEN-TST/
├── binCopy/      (empty destination for /bin/cp test)
├── copyFrom/     (source directory)
│   ├── firstFile
│   ├── secondFile
│   ├── firstDir/
│   └── secondDir/
│       └── thirdFile
└── zopenCopy/    (empty destination for zopen cp test)

Reproduction Steps

1. Test with standard /bin/cp:

   /bin/cp -R copyFrom/ binCopy

2. Test with zopen cp:

   /u/myuser/zopen/usr/local/altbin/cp -R copyFrom/ zopenCopy

Expected Behavior (Standard /bin/cp)

The contents of copyFrom/ are copied directly into binCopy/:

binCopy/
├── firstFile
├── secondFile
├── firstDir/
└── secondDir/
    └── thirdFile

Verification with ls -l binCopy/*:

-rw-------  1 MYUSER TSOUSER    0 Feb 18 15:53 binCopy/firstFile
-rw-------  1 MYUSER TSOUSER    0 Feb 18 15:53 binCopy/secondFile

binCopy/firstDir:
total 0

binCopy/secondDir:
total 0
-rw-------  1 MYUSER TSOUSER 0 Feb 18 15:53 thirdFile

Actual Behavior (zopen cp)

An extra directory layer is created - the entire copyFrom directory is nested inside zopenCopy/:

zopenCopy/
└── copyFrom/          ← Extra directory layer
    ├── firstFile
    ├── secondFile
    ├── firstDir/
    └── secondDir/
        └── thirdFile

Verification with ls -l zopenCopy/*:

total 4
drwx------  2 MYUSER TSOUSER    0 Feb 18 15:54 firstDir
-rw-------  1 MYUSER TSOUSER    0 Feb 18 15:54 firstFile
drwx------  2 MYUSER TSOUSER 8192 Feb 18 15:54 secondDir
-rw-------  1 MYUSER TSOUSER    0 Feb 18 15:54 secondFile

Note: The ls output shows files and directories at the root of zopenCopy/, but this is misleading - these are actually inside a copyFrom/ subdirectory that was created by the zopen cp command. This demonstrates the key difference: /bin/cp places content directly in the destination, while zopen cp creates an extra directory layer.

Verification with ls -l zopenCopy/:

total 4
drwx------  4 MYUSER TSOUSER 8192 Feb 18 15:54 copyFrom