Linux: Detect user namespace support in io/tst-getcwd-smallbuff
Otherwise the test fails with certain container runtimes. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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@ -34,6 +34,7 @@
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#include <sys/un.h>
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#include <sys/un.h>
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#include <support/check.h>
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#include <support/check.h>
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#include <support/temp_file.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/xsched.h>
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#include <support/xunistd.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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xmkdir (MOUNT_NAME, S_IRWXU);
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atexit (do_cleanup);
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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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TEST_VERIFY_EXIT (socketpair (AF_UNIX, SOCK_STREAM, 0, sockfd) == 0);
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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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pid_t child_pid = xclone (child_func, NULL, child_stack,
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sizeof (child_stack),
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sizeof (child_stack),
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