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| author |   Florian Weimer <fweimer@redhat.com> | 2022-01-24 18:14:24 +0100 |
|---|---|---|
| committer |   Andreas K. Hüttel <dilfridge@gentoo.org> | 2022-01-25 12:15:36 +0100 |
| commit | 8cce7727ac3250f1d83454f74cdd983de9bdc1ce (patch) | |
| tree | 99e90f57cc19ddeddf9910467c3f1463671eebe4 | |
| parent | realpath: Avoid overwriting preexisting error (CVE-2021-3998) (diff) | |
| download | glibc-gentoo/glibc-2.33-7.tar.gz glibc-gentoo/glibc-2.33-7.tar.bz2 glibc-gentoo/glibc-2.33-7.zip | |
Linux: Detect user namespace support in io/tst-getcwd-smallbuffgentoo/glibc-2.33-7
Otherwise the test fails with certain container runtimes.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 5b8e7980c5dabd9aaefeba4f0208baa8cf7653ee)
(cherry picked from commit 48d9161e026604bfb1b186627d5b87c6e829a888)
| -rw-r--r-- | sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c b/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c index d460d6e766..55362f6060 100644 --- a/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c +++ b/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c @@ -34,6 +34,7 @@ #include <sys/un.h> #include <support/check.h> #include <support/temp_file.h> +#include <support/test-driver.h> #include <support/xsched.h> #include <support/xunistd.h> @@ -188,6 +189,23 @@ do_test (void) xmkdir (MOUNT_NAME, S_IRWXU); atexit (do_cleanup); + /* Check whether user namespaces are supported. */ + { + pid_t pid = xfork (); + if (pid == 0) + { + if (unshare (CLONE_NEWUSER | CLONE_NEWNS) != 0) + _exit (EXIT_UNSUPPORTED); + else + _exit (0); + } + int status; + xwaitpid (pid, &status, 0); + TEST_VERIFY_EXIT (WIFEXITED (status)); + if (WEXITSTATUS (status) != 0) + return WEXITSTATUS (status); + } + TEST_VERIFY_EXIT (socketpair (AF_UNIX, SOCK_STREAM, 0, sockfd) == 0); pid_t child_pid = xclone (child_func, NULL, child_stack, sizeof (child_stack), |