#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/syscalls.h>
+#include <linux/ptrace.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
static inline int compat_ipc_parse_version(int *cmd)
{
+#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
int version = *cmd & IPC_64;
/* this is tricky: architectures that have support for the old
*cmd &= ~IPC_64;
#endif
return version;
+#else
+ /* With the asm-generic APIs, we always use the 64-bit versions. */
+ return IPC_64;
+#endif
}
static inline int __get_compat_ipc64_perm(struct ipc64_perm *p64,
return err;
}
-long compat_sys_semctl(int first, int second, int third, void __user *uptr)
+static long do_compat_semctl(int first, int second, int third, u32 pad)
{
union semun fourth;
- u32 pad;
int err, err2;
struct semid64_ds s64;
struct semid64_ds __user *up64;
memset(&s64, 0, sizeof(s64));
- if (!uptr)
- return -EINVAL;
- if (get_user(pad, (u32 __user *) uptr))
- return -EFAULT;
if ((third & (~IPC_64)) == SETVAL)
fourth.val = (int) pad;
else
return err;
}
+#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
+long compat_sys_semctl(int first, int second, int third, void __user *uptr)
+{
+ u32 pad;
+
+ if (!uptr)
+ return -EINVAL;
+ if (get_user(pad, (u32 __user *) uptr))
+ return -EFAULT;
+ return do_compat_semctl(first, second, third, pad);
+}
+
long compat_sys_msgsnd(int first, int second, int third, void __user *uptr)
{
struct compat_msgbuf __user *up = uptr;
out:
return err;
}
+#else
+long compat_sys_semctl(int semid, int semnum, int cmd, int arg)
+{
+ return do_compat_semctl(semid, semnum, cmd, arg);
+}
+
+long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
+ size_t msgsz, int msgflg)
+{
+ compat_long_t mtype;
+
+ if (get_user(mtype, &msgp->mtype))
+ return -EFAULT;
+ return do_msgsnd(msqid, mtype, msgp->mtext, msgsz, msgflg);
+}
+
+long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
+ size_t msgsz, long msgtyp, int msgflg)
+{
+ long err, mtype;
+
+ err = do_msgrcv(msqid, &mtype, msgp->mtext, msgsz, msgtyp, msgflg);
+ if (err < 0)
+ goto out;
+
+ if (put_user(mtype, &msgp->mtype))
+ err = -EFAULT;
+ out:
+ return err;
+}
+#endif
static inline int get_compat_msqid64(struct msqid64_ds *m64,
struct compat_msqid64_ds __user *up64)
return err;
}
+#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
void __user *uptr)
{
uaddr = compat_ptr(third);
return put_user(raddr, uaddr);
}
+#else
+long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg)
+{
+ unsigned long ret;
+ long err;
+
+ err = do_shmat(shmid, compat_ptr(shmaddr), shmflg, &ret);
+ if (err)
+ return err;
+ force_successful_syscall_return();
+ return (long)ret;
+}
+#endif
static inline int get_compat_shmid64_ds(struct shmid64_ds *s64,
struct compat_shmid64_ds __user *up64)