DCE Installation, Configuration, and Management Guide

Introduction to NonStop DCE
HP NonStop DCE Installation, Configuration, and Management Guide—429552-005
1-4
Unsupported Features
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If any value other than SCHED_FIFO is supplied in the scheduler
parameter of pthread_setscheduler() or
pthread_attr_setsched(), the procedures fail. If the threads
exception-returning interface is used, the pthread_unimp_e exception is
raised; otherwise, -1 is returned and errno is set to ENOTSUP.
•
The default thread-scheduling policy is SCHED_FIFO (rather than
SCHED_OTHER or SCHED_FG_NP).
•
The default thread-scheduling priority is the middle of the permitted range
for FIFO scheduling, which is (PRI_FIFO_MIN + PRI_FIFO_MAX)/2.
°
Asynchronous delivery of cancels to a thread
•
The asynchronous delivery of a cancel indication to a thread is not
supported.
•
If any value other than CANCEL_OFF is supplied in the state parameter of
pthread_setasynccancel(), the procedures fail. If the threads
exception-returning interface is used, the pthread_unimp_e exception is
raised; otherwise, -1 is returned and errno is set to ENOTSUP.
°
Jackets for process-blocking routines
Except for SERVERCLASS_SEND jackets and transaction demarcation jackets,
jacket routines are not provided to convert process-blocking routines to thread-
blocking routines. For example, a call to a file or NonStop SQL/MP operation
can cause the entire process to block.
•
The dced server API for server management is supported but has not been tested
extensively. In addition, some optional server attributes are not supported.
•
NonStop DCE does not support these security features:
°
The passwd_import and passwd_export commands to integrate the
HP NonStop operating system and DCE user ID and password management
are not provided.
°
The chpass utility is not implemented.
°
Integration of DCE login with the local operating system login into a single
operation is not supported.
The DCE registry and the local operating system user IDs are not integrated. A
user must log on to the NonStop system with an operating systeml user ID and
start an OSS shell before executing the dce_login utility. Keytab and
credential files are protected by local OSS security.
These principal registry attributes are not used by the dce_login utility:
•
Home directory
•
Login shell