ade71b1bfa
Upstream commit: 3438bbca90895d32825a52e31a77dc44d273c1c1 - Linux: Detect user namespace support in io/tst-getcwd-smallbuff - realpath: Avoid overwriting preexisting error - CVE-2021-3999: getcwd: Set errno to ERANGE for size == 1 - tst-realpath-toolong: Fix hurd build - CVE-2021-3998: realpath: ENAMETOOLONG for result larger than PATH_MAX - stdlib: Fix formatting of tests list in Makefile - stdlib: Sort tests in Makefile - support: Add helpers to create paths longer than PATH_MAX - powerpc: Fix unrecognized instruction errors with recent binutils - x86: use default cache size if it cannot be determined [BZ #28784] - CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768) - sunrpc: Test case for clnt_create "unix" buffer overflow (bug 22542) - CVE-2022-23219: Buffer overflow in sunrpc clnt_create for "unix" (bug 22542) - socket: Add the __sockaddr_un_set function - Disable debuginfod in printer tests [BZ #28757] - Update syscall lists for Linux 5.16 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
48 lines
1.5 KiB
Diff
48 lines
1.5 KiB
Diff
commit 3438bbca90895d32825a52e31a77dc44d273c1c1
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Mon Jan 24 18:14:24 2022 +0100
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Linux: Detect user namespace support in io/tst-getcwd-smallbuff
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Otherwise the test fails with certain container runtimes.
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Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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(cherry picked from commit 5b8e7980c5dabd9aaefeba4f0208baa8cf7653ee)
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diff --git a/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c b/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c
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index d460d6e7662dc5e4..55362f6060a2b3be 100644
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--- a/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c
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+++ b/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c
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@@ -34,6 +34,7 @@
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#include <sys/un.h>
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#include <support/check.h>
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#include <support/temp_file.h>
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+#include <support/test-driver.h>
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#include <support/xsched.h>
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#include <support/xunistd.h>
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@@ -188,6 +189,23 @@ do_test (void)
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xmkdir (MOUNT_NAME, S_IRWXU);
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atexit (do_cleanup);
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+ /* Check whether user namespaces are supported. */
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+ {
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+ pid_t pid = xfork ();
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+ if (pid == 0)
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+ {
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+ if (unshare (CLONE_NEWUSER | CLONE_NEWNS) != 0)
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+ _exit (EXIT_UNSUPPORTED);
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+ else
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+ _exit (0);
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+ }
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+ int status;
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+ xwaitpid (pid, &status, 0);
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+ TEST_VERIFY_EXIT (WIFEXITED (status));
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+ if (WEXITSTATUS (status) != 0)
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+ return WEXITSTATUS (status);
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+ }
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+
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TEST_VERIFY_EXIT (socketpair (AF_UNIX, SOCK_STREAM, 0, sockfd) == 0);
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pid_t child_pid = xclone (child_func, NULL, child_stack,
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sizeof (child_stack),
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