| 3850c292 | 25-May-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: test against -Wwrite-strings
Users may use this warning when building their own applications.
Make sure that nolibc does not trigger any such warnings.
Signed-off-by: Thomas Weißs
selftests/nolibc: test against -Wwrite-strings
Users may use this warning when building their own applications.
Make sure that nolibc does not trigger any such warnings.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260525-nolibc-write-strings-v2-3-ab5cc16c7b23@weissschuh.net
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| bfa093f1 | 25-May-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: use mutable buffer for execve() argv string
The existing code would trigger a warning under -Wwrite-strings which is
about to be enabled. Use a mutable buffer instead. While in thi
selftests/nolibc: use mutable buffer for execve() argv string
The existing code would trigger a warning under -Wwrite-strings which is
about to be enabled. Use a mutable buffer instead. While in this
specific case, casting away the 'const' would be fine, let's avoid casts
which are not really necessary.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260525-nolibc-write-strings-v2-2-ab5cc16c7b23@weissschuh.net
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| 835fa43a | 21-May-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
tools/nolibc: add ftruncate()
On architectures with 32-bit longs, call the compat syscall
__NR_ftruncate64. As off_t is 64-bit it must be split into 2 registers.
Unlike llseek() which passes the hig
tools/nolibc: add ftruncate()
On architectures with 32-bit longs, call the compat syscall
__NR_ftruncate64. As off_t is 64-bit it must be split into 2 registers.
Unlike llseek() which passes the high and low parts in explicitly named
arguments, the order here is endian independent.
Some architectures (arm, mips, ppc) require this pair of registers to
be aligned to an even register, so add custom _sys_ftruncate64()
wrappers for those.
A test case for ftruncate is added which validates negative length or
invalid fd return the appropriate error, and checks the length is
correct on success.
Co-developed-by: Jordan Richards <jordanrichards@google.com>
Signed-off-by: Jordan Richards <jordanrichards@google.com>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Reviewed-by: Daniel Palmer <daniel@thingy.jp>
Link: https://patch.msgid.link/20260521-nolibc-ftruncate-v1-3-5384a83b2402@weissschuh.net
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| f66d6bc3 | 21-May-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: enable CONFIG_TMPFS for sparc32
An upcoming selftest will use memfd_create() which require tmpfs.
Enable that.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Wi
selftests/nolibc: enable CONFIG_TMPFS for sparc32
An upcoming selftest will use memfd_create() which require tmpfs.
Enable that.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Reviewed-by: Daniel Palmer <daniel@thingy.jp>
Link: https://patch.msgid.link/20260521-nolibc-ftruncate-v1-1-5384a83b2402@weissschuh.net
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| d4534e08 | 07-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: avoid function pointer comparisons
The upcoming parisc support would require libgcc to implement function
pointer comparisons. As we try to avoid the libgcc dependency rework
the l
selftests/nolibc: avoid function pointer comparisons
The upcoming parisc support would require libgcc to implement function
pointer comparisons. As we try to avoid the libgcc dependency rework
the logic to work without such comparisons.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260428-nolibc-hppa-v5-1-d843d573111a@weissschuh.net
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| 92f1d334 | 29-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: use vmlinux for MIPS tests
QEMU for MIPS can also load 'vmlinux'. Slim down the table by using
that from the fallback.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked
selftests/nolibc: use vmlinux for MIPS tests
QEMU for MIPS can also load 'vmlinux'. Slim down the table by using
that from the fallback.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-7-a2ca07eab297@weissschuh.net
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| bdcdb8ff | 29-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: trim IMAGE mappings
For many configurations QEMU_ARCH is simply 'vmlinux'.
Slim down the table by automatically falling back to 'vmlinux'.
Signed-off-by: Thomas Weißschuh <linux@w
selftests/nolibc: trim IMAGE mappings
For many configurations QEMU_ARCH is simply 'vmlinux'.
Slim down the table by automatically falling back to 'vmlinux'.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-6-a2ca07eab297@weissschuh.net
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| 69940c74 | 29-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: trim DEFCONFIG mappings
For many configurations DEFCONFIG is simply 'defconfig'.
Slim down the table by automatically falling back to 'defconfig'.
Signed-off-by: Thomas Weißschuh
selftests/nolibc: trim DEFCONFIG mappings
For many configurations DEFCONFIG is simply 'defconfig'.
Slim down the table by automatically falling back to 'defconfig'.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-5-a2ca07eab297@weissschuh.net
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| e00e6cf2 | 29-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: trim QEMU_ARCH mappings
For many configurations QEMU_ARCH is the same as XARCH.
Slim down the table by automatically falling back to XARCH.
Signed-off-by: Thomas Weißschuh <linux@
selftests/nolibc: trim QEMU_ARCH mappings
For many configurations QEMU_ARCH is the same as XARCH.
Slim down the table by automatically falling back to XARCH.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-4-a2ca07eab297@weissschuh.net
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| c9063419 | 29-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: use QEMU_ARCH for QEMU_ARCH_USER
The current logic forces the XARCH to QEMU_ARCH mapping to contain
entries for all architectures. This will change. To avoid duplication
of that lo
selftests/nolibc: use QEMU_ARCH for QEMU_ARCH_USER
The current logic forces the XARCH to QEMU_ARCH mapping to contain
entries for all architectures. This will change. To avoid duplication
of that logic, reuse the already computed QEMU_ARCH variable.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-3-a2ca07eab297@weissschuh.net
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| 3c1ee4a3 | 29-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: drop riscv configuration
The riscv configuration is just a duplication of the riscv64 one.
Remove it. Passing ARCH=riscv will be rerouted to riscv64 anyways.
Signed-off-by: Thoma
selftests/nolibc: drop riscv configuration
The riscv configuration is just a duplication of the riscv64 one.
Remove it. Passing ARCH=riscv will be rerouted to riscv64 anyways.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-2-a2ca07eab297@weissschuh.net
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| 89b0d638 | 29-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: align QEMU_ARCH_mips32be
The variable is slightly misaligned. Fix that.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://pat
selftests/nolibc: align QEMU_ARCH_mips32be
The variable is slightly misaligned. Fix that.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-1-a2ca07eab297@weissschuh.net
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| e635b045 | 04-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
tools/nolibc: make __nolibc_enosys() a compile time error
Functions which are known at compile-time to result in ENOSYS can be
surprising to the user. For example using old UAPI headers might mean
t
tools/nolibc: make __nolibc_enosys() a compile time error
Functions which are known at compile-time to result in ENOSYS can be
surprising to the user. For example using old UAPI headers might mean
that stat() will always fail although the kernel would have the system
call available at runtime. Nowadays __nolibc_enosys() should never be
called for normal applications.
Switch the silent ENOSYS return into a compile-time error, so the user
is aware about the issue. Prefer the 'error' attribute as it provides
the best diagnostics. If the users defines NOLIBC_COMPILE_TIME_ENOSYS
the old, silent fallback is kept.
Also add a test which validates that the error can be optimized away.
Reported-by: Willy Tarreau <w@1wt.eu>
Closes: https://lore.kernel.org/lkml/acizRIq2xrFUNHNS@1wt.eu/
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260404-nolibc-enosys-v1-1-e0aba47bdee4@weissschuh.net
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| 598b670a | 04-Jan-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: don't skip tests for unimplemented syscalls anymore
The automatic skipping of tests on ENOSYS returns was introduced in
commit 349afc8a52f8 ("selftests/nolibc: skip tests for unimp
selftests/nolibc: don't skip tests for unimplemented syscalls anymore
The automatic skipping of tests on ENOSYS returns was introduced in
commit 349afc8a52f8 ("selftests/nolibc: skip tests for unimplemented
syscalls"). It handled the fact that nolibc would return ENOSYS for many
syscall wrappers on riscv32.
Nowadays nolibc handles all these correctly, so this logic is not used
anymore. To make missing nolibc functionality more obvious fail the
tests again if something is not implemented.
Revert the mentioned commit again.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260406-nolibc-no-skip-enosys-v1-2-c046b1ac7d73@weissschuh.net/
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| 9a5206f2 | 04-Jan-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: explicitly handle ENOSYS from ptrace()
The automatic ENOSYS handling in EXPECT_SYSER() is about to be removed.
ptrace() will return legitimately return ENOSYS on qemu-user, so hand
selftests/nolibc: explicitly handle ENOSYS from ptrace()
The automatic ENOSYS handling in EXPECT_SYSER() is about to be removed.
ptrace() will return legitimately return ENOSYS on qemu-user, so handle
it explicitly.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260406-nolibc-no-skip-enosys-v1-1-c046b1ac7d73@weissschuh.net/
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| 2eb64b93 | 05-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
tools/nolibc: add the _syscall() macro
The standard syscall() function or macro uses the libc return value
convention. Errors returned from the kernel as negative values are
stored in errno and -1 i
tools/nolibc: add the _syscall() macro
The standard syscall() function or macro uses the libc return value
convention. Errors returned from the kernel as negative values are
stored in errno and -1 is returned. Users who want to avoid using
errno don't have a way to call raw syscalls and check the returned
error.
Add a new macro _syscall() which works like the standard syscall()
but passes through the return value from the kernel unchanged.
The naming scheme and return values match the named _sys_foo()
system call wrappers already part of nolibc.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260405-nolibc-syscall-v1-3-e5b12bc63211@weissschuh.net
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| 08b96aa9 | 04-Apr-2026 |
Thomas Weißschuh <linux@weissschuh.net> |
selftests/nolibc: only use libgcc when really necessary
nolibc should work without libgcc to be compatible with as many
toolchains as possible. Currently the functionality tested by
nolibc-test does
selftests/nolibc: only use libgcc when really necessary
nolibc should work without libgcc to be compatible with as many
toolchains as possible. Currently the functionality tested by
nolibc-test does not contain any dependencies, make sure it stays
this way by not linking libgcc anymore.
On the ppc target GCC always emits references to '_restgpr_' functions,
so keep linking libgcc there.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260404-nolibc-libgcc-v1-1-eb3ecfe0e176@weissschuh.net
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