xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

msg/security: Pass kern_ipc_perm not msg_queue into the msg_queue security hooks

Browse Source 
All of the implementations of security hooks that take msg_queue only
access q_perm the struct kern_ipc_perm member.  This means the
dependencies of the msg_queue security hooks can be simplified by
passing the kern_ipc_perm member of msg_queue.

Making this change will allow struct msg_queue to become private to
ipc/msg.c.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2018-03-22 21:22:26 -05:00
parent 7191adff2a
commit d8c6e85432
6 changed files with 62 additions and 65 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
include/linux/security.h
View File

@@ -50,7 +50,6 @@ struct iattr;
struct fown_struct;
struct file_operations;
struct msg_msg;
struct msg_queue;
struct xattr;
struct xfrm_sec_ctx;
struct mm_struct;
@@ -353,13 +352,13 @@ int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
int security_msg_msg_alloc(struct msg_msg *msg);
void security_msg_msg_free(struct msg_msg *msg);
int security_msg_queue_alloc(struct msg_queue *msq);
void security_msg_queue_free(struct msg_queue *msq);
int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
int security_msg_queue_msgsnd(struct msg_queue *msq,
int security_msg_queue_alloc(struct kern_ipc_perm *msq);
void security_msg_queue_free(struct kern_ipc_perm *msq);
int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
struct msg_msg *msg, int msqflg);
int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
struct task_struct *target, long type, int mode);
int security_shm_alloc(struct kern_ipc_perm *shp);
void security_shm_free(struct kern_ipc_perm *shp);
@@ -1043,32 +1042,32 @@ static inline int security_msg_msg_alloc(struct msg_msg *msg)
static inline void security_msg_msg_free(struct msg_msg *msg)
{ }
static inline int security_msg_queue_alloc(struct msg_queue *msq)
static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
{
return 0;
}
static inline void security_msg_queue_free(struct msg_queue *msq)
static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
{ }
static inline int security_msg_queue_associate(struct msg_queue *msq,
static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
int msqflg)
{
return 0;
}
static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
{
return 0;
}
static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
struct msg_msg *msg, int msqflg)
{
return 0;
}
static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
struct msg_msg *msg,
struct task_struct *target,
long type, int mode)