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Commit a85fb273 authored by Eric W. Biederman's avatar Eric W. Biederman
Browse files

vfs: Allow chroot if you have CAP_SYS_CHROOT in your user namespace 



Once you are confined to a user namespace applications can not gain
privilege and escape the user namespace so there is no longer a reason
to restrict chroot.

Acked-by: default avatarSerge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
parent 50804fe3

fs/open.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -435,7 +435,7 @@ SYSCALL_DEFINE1(chroot, const char __user *, filename) 
		goto dput_and_out;

		goto dput_and_out;





	error = -EPERM;

	error = -EPERM;

	if (!capable(CAP_SYS_CHROOT))

	if (!nsown_capable(CAP_SYS_CHROOT))

		goto dput_and_out;

		goto dput_and_out;

	error = security_path_chroot(&path);

	error = security_path_chroot(&path);

	if (error)

	if (error)