Add test-in-container infrastructure.

* Makefile (testroot.pristine): New rules to initialize the
test-in-container "testroot".
* Makerules (all-testsuite): Add tests-container.
* Rules (tests-expected): Add tests-container.
(binaries-all-tests): Likewise.
(tests-container): New, run these tests in the testroot container.
* support/Makefile (others): Add *-container, support_paths.c,
xmkdirp, and links-dso-program.
* support/links-dso-program-c.c: New.
* support/links-dso-program.cc: New.
* support/test-container.c: New.
* support/shell-container.c: New.
* support/echo-container.c: New.
* support/true-container.c: New.
* support/xmkdirp.c: New.
* support/xsymlink.c: New.
* support/support_paths.c: New.
* support/support.h: Add support paths prototypes.
* support/xunistd.h: Add xmkdirp () and xsymlink ().

* nss/tst-nss-test3.c: Convert to test-in-container.
* nss/tst-nss-test3.root/: New.

1 files changed, 5 insertions, 1 deletions

diff --git a/nss/tst-nss-test3.c b/nss/tst-nss-test3.c
index d9d708ae7b..4112231778 100644
--- a/nss/tst-nss-test3.c
+++ b/nss/tst-nss-test3.c
@@ -107,7 +107,11 @@ do_test (void)
   int i;
   struct group *g = NULL;
 
-  __nss_configure_lookup ("group", "test1");
+/* Previously we used __nss_configure_lookup to isolate the test
+   from the host environment and to get it to lookup from our new
+   test1 NSS service module, but now this test is run in a different
+   root filesystem via the test-container support and we directly
+   configure the use of the test1 NSS service.  */
 
   setgrent ();