Started this when writing tests for a feature I'm working on, needing a way to read/write numbers to system files. After writing some utils to safely handle file IO and parsing, I realised I'd made the ~6th file read/write implementation and only(?) number parser that checks all the failure modes when expecting to parse a single number from a file.
So these utils ended up becoming this series. I also modified some other test utils I came across while doing so. My understanding is selftests are not expected to be backported, so I wasn't concerned about only introducing new utils and leaving the existing implementations be. V3: * Add reviewed-by from previous version * Fix write(2) call to include creation mode V4: * Drop patches merged in v3 * Miscellaneous refactoring * Bigger changes mentioned on the relevant patch Benjamin Gray (5): selftests/powerpc: Add generic read/write file util selftests/powerpc: Add read/write debugfs file, int selftests/powerpc: Parse long/unsigned long value safely selftests/powerpc: Add {read,write}_{long,ulong} selftests/powerpc: Add automatically allocating read_file tools/testing/selftests/powerpc/dscr/dscr.h | 34 +- .../selftests/powerpc/dscr/dscr_sysfs_test.c | 25 +- .../testing/selftests/powerpc/include/utils.h | 20 +- .../selftests/powerpc/nx-gzip/gzfht_test.c | 52 +-- tools/testing/selftests/powerpc/pmu/lib.c | 34 +- .../selftests/powerpc/ptrace/core-pkey.c | 28 +- .../selftests/powerpc/security/entry_flush.c | 12 +- .../selftests/powerpc/security/rfi_flush.c | 12 +- .../powerpc/security/uaccess_flush.c | 18 +- .../selftests/powerpc/syscalls/Makefile | 2 +- .../selftests/powerpc/syscalls/rtas_filter.c | 81 +--- tools/testing/selftests/powerpc/utils.c | 412 +++++++++++++++--- 12 files changed, 431 insertions(+), 299 deletions(-) base-commit: ca272751ba18ca8f137af631cbc9f3f987fab6e3 -- 2.39.1