kernel/linux.git/tools/include/nolibc, branch v6.19.11

tools/nolibc: always use 64-bit mode for s390 header checks

2026-02-26T23:00:42+00:00

[ Upstream commit cc6809f6728456c03db6750fcc94ed8b581a2cf8 ] 32-bit s390 support was recently removed from nolibc. If the compiler defaults to 32-bit during the header checks, they fail. Make sure to always use 64-bit mode for s390 heafer checks. Fixes: 169ebcbb9082 ("tools: Remove s390 compat support") Acked-by: Willy Tarreau Acked-by: Heiko Carstens Link: https://patch.msgid.link/20251203-nolibc-headers-check-s390-v1-1-5d35e52a83ba@weissschuh.net Signed-off-by: Thomas Weißschuh Signed-off-by: Sasha Levin

Merge tag 'nolibc-20251130-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc

2025-12-03T17:23:25+00:00

Pull nolibc updates from Thomas Weißschuh: - Preparations to the use of nolibc in UML: - Cleanup of sparse warnings - Library mode without _start() - More consistency when disabling errno - Unconditional installation of all architecture support files - Always 64-bit wide ino_t and off_t - Various cleanups and bug fixes * tag 'nolibc-20251130-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc: (25 commits) selftests/nolibc: error out on linker warnings selftests/nolibc: use lld to link loongarch binaries tools/nolibc: remove more __nolibc_enosys() fallbacks tools/nolibc: remove now superfluous overflow check in llseek tools/nolibc: use 64-bit off_t tools/nolibc: prefer the llseek syscall tools/nolibc: handle 64-bit off_t for llseek tools/nolibc: use 64-bit ino_t tools/nolibc: avoid using plain integer as NULL pointer tools/nolibc: add support for fchdir() tools/nolibc: clean up outdated comments in generic arch.h tools/nolibc: make the "headers" target install all supported archs tools/nolibc: add the more portable inttypes.h tools/nolibc: provide the portable sys/select.h tools/nolibc: add missing memchr() to string.h tools/nolibc: fix misleading help message regarding installation path tools/nolibc: add uio.h with readv and writev tools/nolibc: add option to disable runtime tools/nolibc: use __fallthrough__ rather than fallthrough tools/nolibc: implement %m if errno is not defined ...

tools/nolibc: remove more __nolibc_enosys() fallbacks

2025-11-20T18:47:11+00:00

Commit e6366101ce1f ("tools/nolibc: remove __nolibc_enosys() fallback from time64-related functions") removed many of these fallbacks but forgot a few. Finish the job. Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau

tools/nolibc: remove now superfluous overflow check in llseek

2025-11-20T18:47:04+00:00

As off_t is now always 64-bit wide this overflow can not happen anymore, remove the check. Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau Reviewed-by: Arnd Bergmann

tools/nolibc: use 64-bit off_t

2025-11-20T18:46:57+00:00

The kernel uses 64-bit values for file offsets. Currently these might be truncated to 32-bit when assigned to nolibc's off_t values. Switch to 64-bit off_t consistently. Suggested-by: Arnd Bergmann Link: https://lore.kernel.org/lkml/cec27d94-c99d-4c57-9a12-275ea663dda8@app.fastmail.com/ Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau

tools/nolibc: prefer the llseek syscall

2025-11-20T18:46:52+00:00

Make sure to always use the 64-bit safe system call in preparation for 64-bit off_t on 32 bit architectures. Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau

tools/nolibc: handle 64-bit off_t for llseek

2025-11-20T18:46:45+00:00

Correctly handle 64-bit off_t values in preparation for 64-bit off_t on 32-bit architectures. Signed-off-by: Thomas Weißschuh Acked-by: Arnd Bergmann Acked-by: Willy Tarreau

tools/nolibc: use 64-bit ino_t

2025-11-20T18:46:33+00:00

The kernel uses 64-bit values for inode numbers. Currently these might be truncated to 32-bit when assigned to nolibc's ino_t values. Switch to 64-bit ino_t consistently. As ino_t is never used directly in kernel ABIs, no systemcall wrappers need to be adapted. Suggested-by: Arnd Bergmann Link: https://lore.kernel.org/lkml/cec27d94-c99d-4c57-9a12-275ea663dda8@app.fastmail.com/ Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau

tools: Remove s390 compat support

2025-11-17T10:10:38+00:00

Remove s390 compat support from everything within tools, since s390 compat support will be removed from the kernel. Reviewed-by: Arnd Bergmann Acked-by: Thomas Weißschuh # tools/nolibc selftests/nolibc Reviewed-by: Thomas Weißschuh # selftests/vDSO Acked-by: Alexei Starovoitov # bpf bits Signed-off-by: Heiko Carstens

tools/nolibc: avoid using plain integer as NULL pointer

2025-11-09T20:29:57+00:00

While an integer zero is a valid NULL pointer as per the C standard, sparse will complain about it. Use explicit NULL pointers instead. Reported-by: kernel test robot Closes: https://lore.kernel.org/r/202509261452.g5peaXCc-lkp@intel.com/ Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau