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| author | Miklos Szeredi <mszeredi@suse.cz> | 2010-02-10 12:15:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-07-05 11:11:15 -0700 |
| commit | 1ef462bee227854af30cdf48e98c3f5a59ceda4f (patch) | |
| tree | f99b988b505d3c7fa6f10ee6b86b082ab629086c /COPYING | |
| parent | de925d2eec426287ca3bde1079a80cb7bed2549b (diff) | |
vfs: add NOFOLLOW flag to umount(2)
commit db1f05bb85d7966b9176e293f3ceead1cb8b5d79 upstream.
Add a new UMOUNT_NOFOLLOW flag to umount(2). This is needed to prevent
symlink attacks in unprivileged unmounts (fuse, samba, ncpfs).
Additionally, return -EINVAL if an unknown flag is used (and specify
an explicitly unused flag: UMOUNT_UNUSED). This makes it possible for
the caller to determine if a flag is supported or not.
CC: Eugene Teo <eugene@redhat.com>
CC: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions