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    Subject[PATCH 2/9] SELinux: setup new inode/ipc getsecid hooks
    From
    Setup the new inode_getsecid and ipc_getsecid() LSM hooks
    for SELinux.

    Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
    Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
    ---

    hooks.c | 19 +++++++++++++++++--
    1 file changed, 17 insertions(+), 2 deletions(-)

    diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
    index f42ebfc..06597d7 100644
    --- a/security/selinux/hooks.c
    +++ b/security/selinux/hooks.c
    @@ -2724,6 +2724,12 @@ static int selinux_inode_killpriv(struct dentry *dentry)
    return secondary_ops->inode_killpriv(dentry);
    }

    +static void selinux_inode_getsecid(const struct inode *inode, u32 *secid)
    +{
    + struct inode_security_struct *isec = inode->i_security;
    + *secid = isec->sid;
    +}
    +
    /* file security operations */

    static int selinux_revalidate_file_permission(struct file *file, int mask)
    @@ -3120,7 +3126,8 @@ static int selinux_task_getsid(struct task_struct *p)

    static void selinux_task_getsecid(struct task_struct *p, u32 *secid)
    {
    - selinux_get_task_sid(p, secid);
    + struct task_security_struct *tsec = p->security;
    + *secid = tsec->sid;
    }

    static int selinux_task_setgroups(struct group_info *group_info)
    @@ -4090,7 +4097,7 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *
    goto out;

    if (sock && family == PF_UNIX)
    - selinux_get_inode_sid(SOCK_INODE(sock), &peer_secid);
    + selinux_inode_getsecid(SOCK_INODE(sock), &peer_secid);
    else if (skb)
    selinux_skb_peerlbl_sid(skb, family, &peer_secid);

    @@ -4970,6 +4977,12 @@ static int selinux_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
    return ipc_has_perm(ipcp, av);
    }

    +static void selinux_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
    +{
    + struct ipc_security_struct *isec = ipcp->security;
    + *secid = isec->sid;
    +}
    +
    /* module stacking operations */
    static int selinux_register_security (const char *name, struct security_operations *ops)
    {
    @@ -5292,6 +5305,7 @@ static struct security_operations selinux_ops = {
    .inode_listsecurity = selinux_inode_listsecurity,
    .inode_need_killpriv = selinux_inode_need_killpriv,
    .inode_killpriv = selinux_inode_killpriv,
    + .inode_getsecid = selinux_inode_getsecid,

    .file_permission = selinux_file_permission,
    .file_alloc_security = selinux_file_alloc_security,
    @@ -5332,6 +5346,7 @@ static struct security_operations selinux_ops = {
    .task_to_inode = selinux_task_to_inode,

    .ipc_permission = selinux_ipc_permission,
    + .ipc_getsecid = selinux_ipc_getsecid,

    .msg_msg_alloc_security = selinux_msg_msg_alloc_security,
    .msg_msg_free_security = selinux_msg_msg_free_security,
    --

    "Better to light a candle, than curse the darkness"

    Ahmed S. Darwish
    Homepage: http://darwish.07.googlepages.com
    Blog: http://darwish-07.blogspot.com



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