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OPTION -P not specified when processing DFHWLPAX file results in 777 permission bits setting

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During apply processing of CICS Transaction Server for z/OS (CICS TS) V5.1 PTF UK98442 for APAR PM91667, a shell script called DFHWLPSH is run. The apply processing removes all subdirectories of .../wlp/ … and creates new subdirectories. The subdirectories are created with a mode of 777 that gives global read, write, and execute access to the directory.