Add datasetio support#1

Draft

sachintu47 wants to merge 28 commits into

zopencommunity:zopen2from

sachintu47:zopen2

Commits on May 8, 2026

Integrate from datasetio. Modify open and close syscall
sachintu47
committed
Add write, read, mkstemp for dataset
sachintu47
committed
fopen override
sachintu47
committed
lseek override
sachintu47
committed
Add default unix fds to database
sachintu47
committed
override stat, fstat
sachintu47
committed
Fix fseek and filesize
sachintu47
committed
refactor datasetentry structure
sachintu47
committed
feat(dsio): implement robust stream emulation for z/OS datasets
sachintu47
committed
fixes
sachintu47
committed
Implement unique st_dev/st_ino generation for datasets in fstat_dataset to prevent tools like ggrep from incorrectly identifying datasets as stdout
sachintu47
committed
fix dataset record alignment
sachintu47
committed
refactor: replace DEBUG_PRINT macros with conditional DSIO_LOG_* macros in dataset I/O
sachintu47
committed
refactor: remove ISPF implementation (deferred to future phase)
sachintu47
committed
cleanup dataset I/O logging and remove incomplete features
sachintu47
committed
complete error handling API with DSIO-to-errno mapping
sachintu47
committed
fix: resolve dataset I/O hang by clearing EOF on lseek and refactoring FB seeks.
sachintu47
committed
clean up unused
sachintu47
committed
feat: add dynamic and compile-time toggles for dataset support
sachintu47
committed
build: add ZOSLIB_ENABLE_DATASETIO configuration option
sachintu47
committed
fix(datasetio): avoid fseek(SEEK_END) on VB/U record-mode files in fstat/dsio_get_size
sachintu47
committed
augment review fixes
sachintu47
committed
Resolved Potential Data Loss on Seek
sachintu47
committed
fix: add thread safety and prevent memory leaks in dataset I/O
sachintu47
committed
feat: enable dataset I/O support by default
sachintu47
committed
Add documentation for ZOSLIB_DATASET_SUPPORT environment variable
sachintu47
committed
refactor: simplify dataset I/O implementation
sachintu47
committed
refactor: remove ZOSLIB_ENABLE_DATASETIO build-time conditional
sachintu47
committed

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Add datasetio support#1

Add datasetio support#1
sachintu47 wants to merge 28 commits into
zopencommunity:zopen2from
sachintu47:zopen2

Commits on May 8, 2026

Integrate from datasetio. Modify open and close syscall

Add write, read, mkstemp for dataset

fopen override

lseek override

Add default unix fds to database

override stat, fstat

Fix fseek and filesize

refactor datasetentry structure

feat(dsio): implement robust stream emulation for z/OS datasets

fixes

Implement unique st_dev/st_ino generation for datasets in fstat_dataset to prevent tools like ggrep from incorrectly identifying datasets as stdout

fix dataset record alignment

refactor: replace DEBUG_PRINT macros with conditional DSIO_LOG_* macros in dataset I/O

refactor: remove ISPF implementation (deferred to future phase)

cleanup dataset I/O logging and remove incomplete features

complete error handling API with DSIO-to-errno mapping

fix: resolve dataset I/O hang by clearing EOF on lseek and refactoring FB seeks.

clean up unused

feat: add dynamic and compile-time toggles for dataset support

build: add ZOSLIB_ENABLE_DATASETIO configuration option

fix(datasetio): avoid fseek(SEEK_END) on VB/U record-mode files in fstat/dsio_get_size

augment review fixes

Resolved Potential Data Loss on Seek

fix: add thread safety and prevent memory leaks in dataset I/O

feat: enable dataset I/O support by default

Add documentation for ZOSLIB_DATASET_SUPPORT environment variable

refactor: simplify dataset I/O implementation

refactor: remove ZOSLIB_ENABLE_DATASETIO build-time conditional