IBM Z Hardware and Operating Systems Ideas Portal


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Support Posix semaphores

The Posix semaphore mechanism (defined by these APIs: sem_open/sem_close/sem_unlink/sem_trywait/sem_wait/sem_timedwait/sem_post/sem_init/sem_destroy/sem_getvalue) is an alternative to the XSI semaphore mechanism currently implemented in z/OS. Posi...
almost 6 years ago in z/OS / LE 3 Future consideration

PTHREAD library always emit error when SYSIN comes from SYSIN dataset and unconditionally opens SYSOUT

When our C++ application code make the first thread creation call to pthread_create() the language environment implementation unconditionally goes and opens the SYSIN and SYSOUT DDnames. Our application can, in most circumstances, already be readi...
about 7 years ago in z/OS / LE 4 Not under consideration

Enhance authentication APIs to support returning Identity tokens and accepting them for authentication

RACF recently (z/OS v2R4 and PTF'ed back to z/OS v2R2) added the ability for RACF to return identity tokens which are actually JSON Web Tokens (JWTs) and to be able to use them in lieu of a password for authentication. Can APIs, such as __passwd()...
almost 4 years ago in z/OS / LE 0 Future consideration

CELQPRLG to support creating MAIN routines

Currently only subroutines are supported, so one must use a high level language that supports creating LP(64) main routines, which in turn requires the language runtime for that language to be initialized, which may be undesirable for certain kind...
over 1 year ago in z/OS / LE 0 Future consideration

bsearch library function for Metal C

Given the Metal C run-time library includes qsort, it should include bsearch
almost 3 years ago in z/OS / LE 2 Future consideration

Remove restriction on MVS files being closed when a thread ends

Knowledge Center documents the restriction that "All MVS files opened from a given thread and still open when the thread is terminated are closed automatically by the library during thread termination." (https://www.ibm.com/support/knowledgecenter...
over 4 years ago in z/OS / LE 1 Not under consideration

Enable AUTOCVT to assume untagged files are ibm-1047

I have been porting several open source applications to USS using the -qascii option on the C/C++ compilers. This works wonderfully when auto conversion is also enabled. The one whole in the auto conversion feature is that it doesn't assume untagg...
almost 5 years ago in z/OS / LE 2 Not under consideration

Allow HEAPZONES LE RTO to be set in CEEBXITA Assembler Exits

As documented in the z/OS Language Environment Programming Guide: You cannot set HEAPZONES at the system level, region level, or in the CEEBXITA assembler user exit interface. This RFE documents the need to allow HEAPZONES to be specified in CEEBX...
over 6 years ago in z/OS / LE 1 Not under consideration

LE storage report STACK64 option new feature

The Maximum used by all concurrent threads is to count active thread number which is counted after thread initialization before thread termination and could handle the workload. We need one thread number statistics value align with the stack lifet...
almost 5 years ago in z/OS / LE 1 Not under consideration

Provide option for open() and fopen() to set the CCSID of a newly created file

Support a new environment variable that would make LE's runtime open() and fopen() functionsset the attribute of a newly created file to a given CCSID. This environment variable could be named something like _EDC_NEW_FILE_CCSID. If set, for exampl...
over 3 years ago in z/OS / LE 1 Not under consideration

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