Messages in this thread | | | Date | Tue, 25 Jan 2022 09:16:16 -0800 | Subject | Re: [PATCH -next] selinux: access superblock_security_struct in LSM blob way | From | Casey Schaufler <> |
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On 1/24/2022 11:11 PM, GONG, Ruiqi wrote: > 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>
This is pretty important.
> --- > security/selinux/hooks.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c > index 5b6895e4fc29..a0243bae8423 100644 > --- a/security/selinux/hooks.c > +++ b/security/selinux/hooks.c > @@ -479,7 +479,7 @@ 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; > @@ -2647,7 +2647,7 @@ static int selinux_sb_eat_lsm_opts(char *options, void **mnt_opts) > 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; >
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