[PATCH] selftests/exec: Check if the syscall exists and bail if not
STALE4271d
From: Michael Ellerman <hidden>
Date: 2015-01-21 07:41:22
Also in:
lkml
Subsystem:
exec & binfmt api, elf, kernel selftest framework, the rest · Maintainers:
Kees Cook, Shuah Khan, Shuah Khan, Linus Torvalds
On systems which don't implement sys_execveat(), this test produces a lot of output. Add a check at the beginning to see if the syscall is present, and if not just note one error and return. Signed-off-by: Michael Ellerman <mpe-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org> --- tools/testing/selftests/exec/execveat.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/tools/testing/selftests/exec/execveat.c b/tools/testing/selftests/exec/execveat.c
index e238c9559caf..b87e4a843bea 100644
--- a/tools/testing/selftests/exec/execveat.c
+++ b/tools/testing/selftests/exec/execveat.c@@ -234,6 +234,14 @@ static int run_tests(void) int fd_cloexec = open_or_die("execveat", O_RDONLY|O_CLOEXEC); int fd_script_cloexec = open_or_die("script", O_RDONLY|O_CLOEXEC); + /* Check if we have execveat at all, and bail early if not */ + errno = 0; + execveat_(-1, NULL, NULL, NULL, 0); + if (errno == -ENOSYS) { + printf("[FAIL] ENOSYS calling execveat - no kernel support?\n"); + return 1; + } + /* Change file position to confirm it doesn't affect anything */ lseek(fd, 10, SEEK_SET);
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2.1.0