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selftests/seccomp: Actually sleep for 1/10th second 

Clang noticed that some none-zero sleep()s were actually using zero
anyway. This switches to nanosleep() to gain sub-second granularity.

seccomp_bpf.c:2625:9: warning: implicit conversion from 'double' to
      'unsigned int' changes value from 0.1 to 0 [-Wliteral-conversion]
                sleep(0.1);
                ~~~~~ ^~~

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Shuah Khan <shuah@kernel.org>
hifive-unleashed-5.1
Kees Cook 2019-01-27 01:43:57 -08:00 committed by Shuah Khan
parent 121e357ac7
commit ed492c2ad4
1 changed files with 3 additions and 2 deletions
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5
tools/testing/selftests/seccomp/seccomp_bpf.c
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@ -2611,6 +2611,7 @@ TEST_F(TSYNC, two_siblings_not_under_filter)
{
long ret, sib;
void *status;
struct timespec delay = { .tv_nsec = 100000000 };
ASSERT_EQ(0, prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0)) {
TH_LOG("Kernel does not support PR_SET_NO_NEW_PRIVS!");
@ -2664,7 +2665,7 @@ TEST_F(TSYNC, two_siblings_not_under_filter)
EXPECT_EQ(SIBLING_EXIT_UNKILLED, (long)status);
/* Poll for actual task death. pthread_join doesn't guarantee it. */
while (!kill(self->sibling[sib].system_tid, 0))
sleep(0.1);
nanosleep(&delay, NULL);
/* Switch to the remaining sibling */
sib = !sib;
@ -2689,7 +2690,7 @@ TEST_F(TSYNC, two_siblings_not_under_filter)
EXPECT_EQ(0, (long)status);
/* Poll for actual task death. pthread_join doesn't guarantee it. */
while (!kill(self->sibling[sib].system_tid, 0))
sleep(0.1);
nanosleep(&delay, NULL);
ret = seccomp(SECCOMP_SET_MODE_FILTER, SECCOMP_FILTER_FLAG_TSYNC,
&self->apply_prog);