kernel.git/tools/testing/selftests/nolibc, branch linux-6.10.y

selftests/nolibc: avoid passing NULL to printf("%s")

2024-10-10T10:00:25Z

[ Upstream commit f1a58f61d88642ae1e6e97e9d72d73bc70a93cb8 ] Clang on higher optimization levels detects that NULL is passed to printf("%s") and warns about it. While printf() from nolibc gracefully handles that NULL, it is undefined behavior as per POSIX, so the warning is reasonable. Avoid the warning by transforming NULL into a non-NULL placeholder. Reviewed-by: Shuah Khan Acked-by: Willy Tarreau Link: https://lore.kernel.org/r/20240807-nolibc-llvm-v2-8-c20f2f5fc7c2@weissschuh.net Signed-off-by: Thomas Weißschuh Signed-off-by: Sasha Levin

selftests/nolibc: fix printf format mismatch in expect_str_buf_eq()

2024-08-03T07:00:33Z

commit 92098b1c10cb29bcc6fa0908a766dc9e16b1e889 upstream. Fix the following compiler warning on 32bit: i386-linux-gcc -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra -fno-stack-protector -m32 -mstack-protector-guard=global -fstack-protector-all -o nolibc-test \ -nostdlib -nostdinc -static -Isysroot/i386/include nolibc-test.c nolibc-test-linkage.c -lgcc nolibc-test.c: In function 'expect_str_buf_eq': nolibc-test.c:610:30: error: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'size_t' {aka 'unsigned int'} [-Werror=format=] 610 | llen += printf(" = %lu <%s> ", expr, buf); | ~~^ ~~~~ | | | | | size_t {aka unsigned int} | long unsigned int | %u Fixes: 1063649cf531 ("selftests/nolibc: Add tests for strlcat() and strlcpy()") Cc: stable@vger.kernel.org Signed-off-by: Thomas Weißschuh Signed-off-by: Greg Kroah-Hartman

tools/nolibc: add support for uname(2)

2024-04-14T18:28:54Z

All supported kernels are assumed to use struct new_utsname. This is validated in test_uname(). uname(2) can for example be used in ksft_min_kernel_version() from the kernels selftest framework. Link: https://lore.kernel.org/lkml/20240412123536.GA32444@redhat.com/ Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau

selftests/nolibc: Add tests for strlcat() and strlcpy()

2024-04-10T21:19:02Z

I've verified that the tests matches libbsd's strlcat()/strlcpy() implementation. Please note that as strlcat()/strlcpy() are not part of the libc, the tests are only compiled when using nolibc. Signed-off-by: Rodrigo Campos Signed-off-by: Thomas Weißschuh

selftests/nolibc: disable coredump via setrlimit

2023-12-11T21:38:37Z

qemu-user does has its own implementation of coredumping. That implementation does not respect the call to prctl(PR_SET_DUMPABLE, 0) in run_protection(). This leads to a coredump for every test run under qemu-user. Use also setrlimit() to inhibit coredump creation which is respected by qemu-user. Link: https://lore.kernel.org/qemu-devel/20231115-qemu-user-dumpable-v1-2-edbe7f0fbb02@t-8ch.de/ Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/lkml/20231123-nolibc-rlimit-v1-3-a428b131de2a@weissschuh.net/ Acked-by: Willy Tarreau

tools/nolibc: add support for getrlimit/setrlimit

2023-12-11T21:38:35Z

The implementation uses the prlimit64 systemcall as that is available on all architectures. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/lkml/20231123-nolibc-rlimit-v1-2-a428b131de2a@weissschuh.net/ Acked-by: Willy Tarreau

tools/nolibc: drop duplicated testcase ioctl_tiocinq

2023-12-11T21:38:33Z

The same testcase is present on the line above. Fixes: b4844fa0bdb4 ("selftests/nolibc: implement a few tests for various syscalls") Signed-off-by: Thomas Weißschuh

selftests/nolibc: make result alignment more robust

2023-12-11T21:38:31Z

Move the check of the existing length into the function so it can't be forgotten by the caller. Also hardcode the padding character as only spaces are ever used. Signed-off-by: Thomas Weißschuh

tools/nolibc: mips: add support for PIC

2023-12-11T21:38:30Z

MIPS requires some extra instructions to set up the $gp register for the with a pointer to the global data area. This isn't needed for non-PIC builds, but this patch enables the code unconditionally to prevent bitrot. Also enable PIC in one of the test configurations for ongoing validation. Link: https://lore.kernel.org/r/20231108-nolibc-pic-v2-1-4fb0d6284757@weissschuh.net Signed-off-by: Thomas Weißschuh

selftests/nolibc: run-tests.sh: enable testing via qemu-user

2023-12-11T21:38:29Z

qemu-user is faster than a full system test. Link: https://lore.kernel.org/r/20770915-nolibc-run-user-v1-2-3caec61726dc@weissschuh.net Signed-off-by: Thomas Weißschuh