diff options
Diffstat (limited to 'tools/testing/selftests/arm64/tags')
-rw-r--r-- | tools/testing/selftests/arm64/tags/.gitignore | 2 | ||||
-rw-r--r-- | tools/testing/selftests/arm64/tags/Makefile | 7 | ||||
-rwxr-xr-x | tools/testing/selftests/arm64/tags/run_tags_test.sh | 12 | ||||
-rw-r--r-- | tools/testing/selftests/arm64/tags/tags_test.c | 31 |
4 files changed, 52 insertions, 0 deletions
diff --git a/tools/testing/selftests/arm64/tags/.gitignore b/tools/testing/selftests/arm64/tags/.gitignore new file mode 100644 index 000000000..f4f6c5112 --- /dev/null +++ b/tools/testing/selftests/arm64/tags/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +tags_test diff --git a/tools/testing/selftests/arm64/tags/Makefile b/tools/testing/selftests/arm64/tags/Makefile new file mode 100644 index 000000000..41cb75070 --- /dev/null +++ b/tools/testing/selftests/arm64/tags/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0 + +CFLAGS += -I../../../../../usr/include/ +TEST_GEN_PROGS := tags_test +TEST_PROGS := run_tags_test.sh + +include ../../lib.mk diff --git a/tools/testing/selftests/arm64/tags/run_tags_test.sh b/tools/testing/selftests/arm64/tags/run_tags_test.sh new file mode 100755 index 000000000..745f11379 --- /dev/null +++ b/tools/testing/selftests/arm64/tags/run_tags_test.sh @@ -0,0 +1,12 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +echo "--------------------" +echo "running tags test" +echo "--------------------" +./tags_test +if [ $? -ne 0 ]; then + echo "[FAIL]" +else + echo "[PASS]" +fi diff --git a/tools/testing/selftests/arm64/tags/tags_test.c b/tools/testing/selftests/arm64/tags/tags_test.c new file mode 100644 index 000000000..570116346 --- /dev/null +++ b/tools/testing/selftests/arm64/tags/tags_test.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <stdint.h> +#include <sys/prctl.h> +#include <sys/utsname.h> + +#define SHIFT_TAG(tag) ((uint64_t)(tag) << 56) +#define SET_TAG(ptr, tag) (((uint64_t)(ptr) & ~SHIFT_TAG(0xff)) | \ + SHIFT_TAG(tag)) + +int main(void) +{ + static int tbi_enabled = 0; + unsigned long tag = 0; + struct utsname *ptr; + int err; + + if (prctl(PR_SET_TAGGED_ADDR_CTRL, PR_TAGGED_ADDR_ENABLE, 0, 0, 0) == 0) + tbi_enabled = 1; + ptr = (struct utsname *)malloc(sizeof(*ptr)); + if (tbi_enabled) + tag = 0x42; + ptr = (struct utsname *)SET_TAG(ptr, tag); + err = uname(ptr); + free(ptr); + + return err; +} |