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| author | Dave Jones <davej@redhat.com> | 2012-12-17 16:04:52 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-17 17:15:27 -0800 |
| commit | 2bf1cbf1c616b4dd85a3a8a715af9c5701c16a91 (patch) | |
| tree | d42dd56db8607b3a35cd8727c7f6838753c0a262 /tools/testing/selftests/kcmp | |
| parent | 5a55f8bb2d0c4e5c05837b688ed1b2132a0ed0e7 (diff) | |
| download | lwn-2bf1cbf1c616b4dd85a3a8a715af9c5701c16a91.tar.gz lwn-2bf1cbf1c616b4dd85a3a8a715af9c5701c16a91.zip | |
tools/testing/selftests/kcmp/kcmp_test.c: print reason for failure in kcmp_test
I was curious why sys_kcmp wasn't working, which led me to the testcase.
It turned out I hadn't enabled CHECKPOINT_RESTORE in the kernel I was
testing. Add a decoding of errno to the testcase to make that obvious.
Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/kcmp')
| -rw-r--r-- | tools/testing/selftests/kcmp/kcmp_test.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/testing/selftests/kcmp/kcmp_test.c b/tools/testing/selftests/kcmp/kcmp_test.c index 358cc6bfa35d..fa4f1b37e045 100644 --- a/tools/testing/selftests/kcmp/kcmp_test.c +++ b/tools/testing/selftests/kcmp/kcmp_test.c @@ -72,7 +72,8 @@ int main(int argc, char **argv) /* This one should return same fd */ ret = sys_kcmp(pid1, pid2, KCMP_FILE, fd1, fd1); if (ret) { - printf("FAIL: 0 expected but %d returned\n", ret); + printf("FAIL: 0 expected but %d returned (%s)\n", + ret, strerror(errno)); ret = -1; } else printf("PASS: 0 returned as expected\n"); @@ -80,7 +81,8 @@ int main(int argc, char **argv) /* Compare with self */ ret = sys_kcmp(pid1, pid1, KCMP_VM, 0, 0); if (ret) { - printf("FAIL: 0 expected but %li returned\n", ret); + printf("FAIL: 0 expected but %li returned (%s)\n", + ret, strerror(errno)); ret = -1; } else printf("PASS: 0 returned as expected\n"); |