kernel/git/stable/linux-stable.git/tools/include/nolibc, branch linux-6.15.y

tools/nolibc: fix spelling of FD_SETBITMASK in FD_* macros

2025-08-20T16:36:34+00:00

commit a477629baa2a0e9991f640af418e8c973a1c08e3 upstream. While nolibc-test does test syscalls, it doesn't test as much the rest of the macros, and a wrong spelling of FD_SETBITMASK in commit feaf75658783a broke programs using either FD_SET() or FD_CLR() without being noticed. Let's fix these macros. Fixes: feaf75658783a ("nolibc: fix fd_set type") Cc: stable@vger.kernel.org # v6.2+ Acked-by: Thomas Weißschuh Signed-off-by: Willy Tarreau Signed-off-by: Greg Kroah-Hartman

tools/nolibc: define time_t in terms of __kernel_old_time_t

2025-08-20T16:35:55+00:00

[ Upstream commit d5094bcb5bfdfea2cf0de8aaf77cc65db56cbdb5 ] Nolibc assumes that the kernel ABI is using a time values that are as large as a long integer. For most ABIs this holds true. But for x32 this is not correct, as it uses 32bit longs but 64bit times. Also the 'struct stat' implementation of nolibc relies on timespec::tv_sec and time_t being the same type. While timespec::tv_sec comes from the kernel and is of type __kernel_old_time_t, time_t is defined within nolibc. Switch to the __kernel_old_time_t to always get the correct type. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20250712-nolibc-x32-v1-1-6d81cb798710@weissschuh.net Acked-by: Willy Tarreau Signed-off-by: Sasha Levin

Merge tag 'timers-vdso-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-03-25T18:30:42+00:00

Pull VDSO infrastructure updates from Thomas Gleixner: - Consolidate the VDSO storage The VDSO data storage and data layout has been largely architecture specific for historical reasons. That increases the maintenance effort and causes inconsistencies over and over. There is no real technical reason for architecture specific layouts and implementations. The architecture specific details can easily be integrated into a generic layout, which also reduces the amount of duplicated code for managing the mappings. Convert all architectures over to a unified layout and common mapping infrastructure. This splits the VDSO data layout into subsystem specific blocks, timekeeping, random and architecture parts, which provides a better structure and allows to improve and update the functionalities without conflict and interaction. - Rework the timekeeping data storage The current implementation is designed for exposing system timekeeping accessors, which was good enough at the time when it was designed. PTP and Time Sensitive Networking (TSN) change that as there are requirements to expose independent PTP clocks, which are not related to system timekeeping. Replace the monolithic data storage by a structured layout, which allows to add support for independent PTP clocks on top while reusing both the data structures and the time accessor implementations. * tag 'timers-vdso-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (55 commits) sparc/vdso: Always reject undefined references during linking x86/vdso: Always reject undefined references during linking vdso: Rework struct vdso_time_data and introduce struct vdso_clock vdso: Move architecture related data before basetime data powerpc/vdso: Prepare introduction of struct vdso_clock arm64/vdso: Prepare introduction of struct vdso_clock x86/vdso: Prepare introduction of struct vdso_clock time/namespace: Prepare introduction of struct vdso_clock vdso/namespace: Rename timens_setup_vdso_data() to reflect new vdso_clock struct vdso/vsyscall: Prepare introduction of struct vdso_clock vdso/gettimeofday: Prepare helper functions for introduction of struct vdso_clock vdso/gettimeofday: Prepare do_coarse_timens() for introduction of struct vdso_clock vdso/gettimeofday: Prepare do_coarse() for introduction of struct vdso_clock vdso/gettimeofday: Prepare do_hres_timens() for introduction of struct vdso_clock vdso/gettimeofday: Prepare do_hres() for introduction of struct vdso_clock vdso/gettimeofday: Prepare introduction of struct vdso_clock vdso/helpers: Prepare introduction of struct vdso_clock vdso/datapage: Define vdso_clock to prepare for multiple PTP clocks vdso: Make vdso_time_data cacheline aligned arm64: Make asm/cache.h compatible with vDSO ...

tools/nolibc: don't use asm/ UAPI headers

2025-03-08T12:18:27+00:00

The asm/ and asm-generic/ namespaces are implementation details of the UAPI headers and not meant for direct usage. Use the equivalent headers from the linux/ namespace instead. While at it also drop the duplicate include of linux/signal.h from sys.h. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20250307-nolibc-asm-headers-v2-1-e2a734f25d22@linutronix.de

tools/nolibc: drop outdated example from overview comment

2025-03-06T21:30:21+00:00

This behaviour was changed in commit a7604ba149e7 ("tools/nolibc/sys: make open() take a vararg on the 3rd argument"). Signed-off-by: Louis Taylor Link: https://lore.kernel.org/r/20250306184147.208723-4-louis@kragniz.eu Signed-off-by: Thomas Weißschuh

tools/nolibc: process open() vararg as mode_t

2025-03-06T21:30:21+00:00

openat() uses mode_t for this, so also update open() to be consistent. Signed-off-by: Louis Taylor Link: https://lore.kernel.org/r/20250306184147.208723-3-louis@kragniz.eu Signed-off-by: Thomas Weißschuh

tools/nolibc: always use openat(2) instead of open(2)

2025-03-06T21:30:20+00:00

All architectures support openat, so we don't need to make its use conditional. Signed-off-by: Louis Taylor Link: https://lore.kernel.org/r/20250306184147.208723-2-louis@kragniz.eu Signed-off-by: Thomas Weißschuh

tools/nolibc: add support for openat(2)

2025-03-06T21:30:20+00:00

openat is useful to avoid needing to construct relative paths, so expose a wrapper for using it directly. Signed-off-by: Louis Taylor Link: https://lore.kernel.org/r/20250306184147.208723-1-louis@kragniz.eu Signed-off-by: Thomas Weißschuh

tools/nolibc: add limits.h shim header

2025-03-03T19:00:12+00:00

limits.h is a widely used standard header. Missing it from nolibc requires adoption effort to port applications. Add a shim header which includes the global nolibc.h header. It makes all nolibc symbols available. Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Tested-by: Willy Tarreau Reviewed-by: Vincenzo Frascino Acked-by: Willy Tarreau Acked-by: Shuah Khan Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-9-28e14e031ed8@linutronix.de

tools/nolibc: add support for [v]sscanf()

2025-02-26T21:13:48+00:00

These functions are used often, also in selftests. sscanf() itself is also used by kselftest.h itself. The implementation is limited and only supports numeric arguments. Acked-by: Willy Tarreau Link: https://lore.kernel.org/r/20250209-nolibc-scanf-v2-1-c29dea32f1cd@weissschuh.net Signed-off-by: Thomas Weißschuh