diff options
| author | Aaron Lewis <aaronlewis@google.com> | 2023-07-28 17:36:13 -0700 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-08-02 14:41:59 -0700 |
| commit | a1c1b55e116c14de4f8a78286b502101f2a1620c (patch) | |
| tree | 189c0f6003701b55341ee3d315a857d59fa43e4a | |
| parent | 6783ca4105a75d1ba4f89b13cef1bc1f677c41e5 (diff) | |
KVM: selftests: Add strnlen() to the string overrides
Add strnlen() to the string overrides to allow it to be called in the
guest.
The implementation for strnlen() was taken from the kernel's generic
version, lib/string.c.
This will be needed when printf() is introduced.
Signed-off-by: Aaron Lewis <aaronlewis@google.com>
Link: https://lore.kernel.org/r/20230729003643.1053367-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | tools/testing/selftests/kvm/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/lib/string_override.c | 9 |
2 files changed, 10 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index c692cc86e7da..f6c14ab476ac 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -204,6 +204,7 @@ endif CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \ -Wno-gnu-variable-sized-type-not-at-end -MD\ -fno-builtin-memcmp -fno-builtin-memcpy -fno-builtin-memset \ + -fno-builtin-strnlen \ -fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) \ -I$(LINUX_TOOL_ARCH_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude \ -I$(<D) -Iinclude/$(ARCH_DIR) -I ../rseq -I.. $(EXTRA_CFLAGS) \ diff --git a/tools/testing/selftests/kvm/lib/string_override.c b/tools/testing/selftests/kvm/lib/string_override.c index 632398adc229..5d1c87277c49 100644 --- a/tools/testing/selftests/kvm/lib/string_override.c +++ b/tools/testing/selftests/kvm/lib/string_override.c @@ -37,3 +37,12 @@ void *memset(void *s, int c, size_t count) *xs++ = c; return s; } + +size_t strnlen(const char *s, size_t count) +{ + const char *sc; + + for (sc = s; count-- && *sc != '\0'; ++sc) + /* nothing */; + return sc - s; +} |