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157a3537d6
commit2db154b3ea("vfs: syscall: Add move_mount(2) to move mounts around") introduced a new move_mount(2) system call and a corresponding new LSM security_move_mount hook but did not implement this hook for any existing LSM. This creates a regression for AppArmor mediation of mount. This patch provides a base mapping of the move_mount syscall to the existing mount mediation. In the future we may introduce additional mediations around the new mount calls. Fixes:2db154b3ea("vfs: syscall: Add move_mount(2) to move mounts around") CC: stable@vger.kernel.org Reported-by: Andreas Steinmetz <anstein99@googlemail.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* AppArmor security module
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*
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* This file contains AppArmor file mediation function definitions.
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*
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* Copyright 2017 Canonical Ltd.
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*/
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#ifndef __AA_MOUNT_H
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#define __AA_MOUNT_H
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#include <linux/fs.h>
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#include <linux/path.h>
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#include "domain.h"
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#include "policy.h"
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/* mount perms */
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#define AA_MAY_PIVOTROOT 0x01
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#define AA_MAY_MOUNT 0x02
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#define AA_MAY_UMOUNT 0x04
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#define AA_AUDIT_DATA 0x40
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#define AA_MNT_CONT_MATCH 0x40
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#define AA_MS_IGNORE_MASK (MS_KERNMOUNT | MS_NOSEC | MS_ACTIVE | MS_BORN)
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int aa_remount(const struct cred *subj_cred,
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struct aa_label *label, const struct path *path,
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unsigned long flags, void *data);
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int aa_bind_mount(const struct cred *subj_cred,
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struct aa_label *label, const struct path *path,
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const char *old_name, unsigned long flags);
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int aa_mount_change_type(const struct cred *subj_cred,
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struct aa_label *label, const struct path *path,
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unsigned long flags);
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int aa_move_mount_old(const struct cred *subj_cred,
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struct aa_label *label, const struct path *path,
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const char *old_name);
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int aa_move_mount(const struct cred *subj_cred,
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struct aa_label *label, const struct path *from_path,
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const struct path *to_path);
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int aa_new_mount(const struct cred *subj_cred,
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struct aa_label *label, const char *dev_name,
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const struct path *path, const char *type, unsigned long flags,
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void *data);
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int aa_umount(const struct cred *subj_cred,
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struct aa_label *label, struct vfsmount *mnt, int flags);
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int aa_pivotroot(const struct cred *subj_cred,
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struct aa_label *label, const struct path *old_path,
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const struct path *new_path);
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#endif /* __AA_MOUNT_H */
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