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authorAleksa Sarai <cyphar@cyphar.com>2020-01-18 23:08:00 +1100
committerAl Viro <viro@zeniv.linux.org.uk>2020-01-18 09:19:18 -0500
commitb28a10aedcd4d175470171a32f4f20b0a60a612b (patch)
tree418470992a734633f506e8a04e32db89b72c7dd7 /tools/testing/selftests/Makefile
parentopen: introduce openat2(2) syscall (diff)
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selftests: add openat2(2) selftests
Test all of the various openat2(2) flags. A small stress-test of a symlink-rename attack is included to show that the protections against ".."-based attacks are sufficient. The main things these self-tests are enforcing are: * The struct+usize ABI for openat2(2) and copy_struct_from_user() to ensure that upgrades will be handled gracefully (in addition, ensuring that misaligned structures are also handled correctly). * The -EINVAL checks for openat2(2) are all correctly handled to avoid userspace passing unknown or conflicting flag sets (most importantly, ensuring that invalid flag combinations are checked). * All of the RESOLVE_* semantics (including errno values) are correctly handled with various combinations of paths and flags. * RESOLVE_IN_ROOT correctly protects against the symlink rename(2) attack that has been responsible for several CVEs (and likely will be responsible for several more). Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'tools/testing/selftests/Makefile')
-rw-r--r--tools/testing/selftests/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index b001c602414b..4f502448dc7e 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -40,6 +40,7 @@ TARGETS += powerpc
TARGETS += proc
TARGETS += pstore
TARGETS += ptrace
+TARGETS += openat2
TARGETS += rseq
TARGETS += rtc
TARGETS += seccomp