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581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* Enter a mount namespace.
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Copyright (C) 2017-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <support/namespace.h>
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#include <sched.h>
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#include <stdio.h>
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#ifdef CLONE_NEWNS
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# include <sys/mount.h>
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#endif /* CLONE_NEWNS */
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bool
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support_enter_mount_namespace (void)
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{
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#ifdef CLONE_NEWNS
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if (unshare (CLONE_NEWNS) == 0)
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{
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/* On some systems, / is marked as MS_SHARED, which means that
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mounts within the namespace leak to the rest of the system,
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which is not what we want. */
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if (mount ("none", "/", NULL, MS_REC | MS_PRIVATE, NULL) != 0)
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{
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printf ("warning: making the mount namespace private failed: %m\n");
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return false;
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}
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return true;
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}
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else
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printf ("warning: unshare (CLONE_NEWNS) failed: %m\n");
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#endif /* CLONE_NEWNS */
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return false;
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}
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