/* arg for semctl system calls. */
union semun {
int val; /* value for SETVAL */
- struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */
- unsigned short *array; /* array for GETALL & SETALL */
- struct seminfo *__buf; /* buffer for IPC_INFO */
- void *__pad;
+ struct semid_ds __user *buf; /* buffer for IPC_STAT & IPC_SET */
+ unsigned short __user *array; /* array for GETALL & SETALL */
+ struct seminfo __user *__buf; /* buffer for IPC_INFO */
+ void __user *__pad;
};
struct seminfo {
int id; /* internal sem id */
struct sembuf * sops; /* array of pending operations */
int nsops; /* number of operations */
+ int alter; /* does the operation alter the array? */
};
/* Each task has a list of undo requests. They are executed automatically