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selinux: access superblock_security_struct in LSM blob way

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[ Upstream commit 0266c25e7c2821181b610595df42cbca6bc93cb8 ]

LSM blob has been involved for superblock's security struct. So fix the
remaining direct access to sb->s_security by using the LSM blob
mechanism.

Fixes: 08abe46b2cfc ("selinux: fall back to SECURITY_FS_USE_GENFS if no xattr support")
Fixes: 69c4a42d72eb ("lsm,selinux: add new hook to compare new mount to an existing mount")
Signed-off-by: GONG, Ruiqi <gongruiqi1@huawei.com>
Reviewed-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
GONG, Ruiqi 2022-01-25 15:11:33 +08:00 committed by Greg Kroah-Hartman
parent ae2ff8d991
commit aeeb944e7f
1 changed files with 2 additions and 2 deletions
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4
security/selinux/hooks.c
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@ -492,7 +492,7 @@ static int selinux_is_sblabel_mnt(struct super_block *sb)
static int sb_check_xattr_support(struct super_block *sb)
{
struct superblock_security_struct *sbsec = sb->s_security;
struct superblock_security_struct *sbsec = selinux_superblock(sb);
struct dentry *root = sb->s_root;
struct inode *root_inode = d_backing_inode(root);
u32 sid;
@ -2695,7 +2695,7 @@ free_opt:
static int selinux_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts)
{
struct selinux_mnt_opts *opts = mnt_opts;
struct superblock_security_struct *sbsec = sb->s_security;
struct superblock_security_struct *sbsec = selinux_superblock(sb);
u32 sid;
int rc;