ipc(2): move compat to native

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2 files changed, 93 insertions, 95 deletions

diff --git a/ipc/compat.c b/ipc/compat.c
index 3c25ca1e46c7..00c2e3beccc8 100644
--- a/ipc/compat.c
+++ b/ipc/compat.c
@@ -39,11 +39,6 @@ struct compat_msgbuf {
         char mtext[1];
 };
 
-struct compat_ipc_kludge {
-        compat_uptr_t msgp;
-        compat_long_t msgtyp;
-};
-
 int get_compat_ipc64_perm(struct ipc64_perm *to,
                           struct compat_ipc64_perm __user *from)
 {
@@ -104,95 +99,6 @@ static long compat_do_msg_fill(void __user *dest, struct msg_msg *msg, size_t bu
         return msgsz;
 }
 
-#ifndef COMPAT_SHMLBA
-#define COMPAT_SHMLBA   SHMLBA
-#endif
-
-#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
-COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
-        u32, third, compat_uptr_t, ptr, u32, fifth)
-{
-        int version;
-        u32 pad;
-
-        version = call >> 16; /* hack for backward compatibility */
-        call &= 0xffff;
-
-        switch (call) {
-        case SEMOP:
-                /* struct sembuf is the same on 32 and 64bit :)) */
-                return sys_semtimedop(first, compat_ptr(ptr), second, NULL);
-        case SEMTIMEDOP:
-                return compat_sys_semtimedop(first, compat_ptr(ptr), second,
-                                                compat_ptr(fifth));
-        case SEMGET:
-                return sys_semget(first, second, third);
-        case SEMCTL:
-                if (!ptr)
-                        return -EINVAL;
-                if (get_user(pad, (u32 __user *) compat_ptr(ptr)))
-                        return -EFAULT;
-                return compat_sys_semctl(first, second, third, pad);
-
-        case MSGSND: {
-                struct compat_msgbuf __user *up = compat_ptr(ptr);
-                compat_long_t type;
-
-                if (first < 0 || second < 0)
-                        return -EINVAL;
-
-                if (get_user(type, &up->mtype))
-                        return -EFAULT;
-
-                return do_msgsnd(first, type, up->mtext, second, third);
-        }
-        case MSGRCV: {
-                void __user *uptr = compat_ptr(ptr);
-
-                if (first < 0 || second < 0)
-                        return -EINVAL;
-
-                if (!version) {
-                        struct compat_ipc_kludge ipck;
-                        if (!uptr)
-                                return -EINVAL;
-                        if (copy_from_user(&ipck, uptr, sizeof(ipck)))
-                                return -EFAULT;
-                        uptr = compat_ptr(ipck.msgp);
-                        fifth = ipck.msgtyp;
-                }
-                return do_msgrcv(first, uptr, second, (s32)fifth, third,
-                                 compat_do_msg_fill);
-        }
-        case MSGGET:
-                return sys_msgget(first, second);
-        case MSGCTL:
-                return compat_sys_msgctl(first, second, compat_ptr(ptr));
-
-        case SHMAT: {
-                int err;
-                unsigned long raddr;
-
-                if (version == 1)
-                        return -EINVAL;
-                err = do_shmat(first, compat_ptr(ptr), second, &raddr,
-                               COMPAT_SHMLBA);
-                if (err < 0)
-                        return err;
-                return put_user(raddr, (compat_ulong_t *)compat_ptr(third));
-        }
-        case SHMDT:
-                return sys_shmdt(compat_ptr(ptr));
-        case SHMGET:
-                return sys_shmget(first, (unsigned)second, third);
-        case SHMCTL:
-                return compat_sys_shmctl(first, second, compat_ptr(ptr));
-        }
-
-        return -ENOSYS;
-}
-#endif
-
 COMPAT_SYSCALL_DEFINE4(msgsnd, int, msqid, compat_uptr_t, msgp,
                        compat_ssize_t, msgsz, int, msgflg)
 {
@@ -211,6 +117,10 @@ COMPAT_SYSCALL_DEFINE5(msgrcv, int, msqid, compat_uptr_t, msgp,
                          msgflg, compat_do_msg_fill);
 }
 
+#ifndef COMPAT_SHMLBA
+#define COMPAT_SHMLBA   SHMLBA
+#endif
+
 COMPAT_SYSCALL_DEFINE3(shmat, int, shmid, compat_uptr_t, shmaddr, int, shmflg)
 {
         unsigned long ret;
diff --git a/ipc/syscall.c b/ipc/syscall.c
index 52429489cde0..667022746ca5 100644
--- a/ipc/syscall.c
+++ b/ipc/syscall.c
@@ -5,12 +5,12 @@
  * the individual syscalls instead.
  */
 #include <linux/unistd.h>
+#include <linux/syscalls.h>
 
 #ifdef __ARCH_WANT_SYS_IPC
 #include <linux/errno.h>
 #include <linux/ipc.h>
 #include <linux/shm.h>
-#include <linux/syscalls.h>
 #include <linux/uaccess.h>
 
 SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
@@ -97,3 +97,91 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
         }
 }
 #endif
+
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>
+
+#ifndef COMPAT_SHMLBA
+#define COMPAT_SHMLBA   SHMLBA
+#endif
+
+struct compat_ipc_kludge {
+        compat_uptr_t msgp;
+        compat_long_t msgtyp;
+};
+
+#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
+COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
+        u32, third, compat_uptr_t, ptr, u32, fifth)
+{
+        int version;
+        u32 pad;
+
+        version = call >> 16; /* hack for backward compatibility */
+        call &= 0xffff;
+
+        switch (call) {
+        case SEMOP:
+                /* struct sembuf is the same on 32 and 64bit :)) */
+                return sys_semtimedop(first, compat_ptr(ptr), second, NULL);
+        case SEMTIMEDOP:
+                return compat_sys_semtimedop(first, compat_ptr(ptr), second,
+                                                compat_ptr(fifth));
+        case SEMGET:
+                return sys_semget(first, second, third);
+        case SEMCTL:
+                if (!ptr)
+                        return -EINVAL;
+                if (get_user(pad, (u32 __user *) compat_ptr(ptr)))
+                        return -EFAULT;
+                return compat_sys_semctl(first, second, third, pad);
+
+        case MSGSND:
+                return compat_sys_msgsnd(first, ptr, second, third);
+
+        case MSGRCV: {
+                void __user *uptr = compat_ptr(ptr);
+
+                if (first < 0 || second < 0)
+                        return -EINVAL;
+
+                if (!version) {
+                        struct compat_ipc_kludge ipck;
+                        if (!uptr)
+                                return -EINVAL;
+                        if (copy_from_user(&ipck, uptr, sizeof(ipck)))
+                                return -EFAULT;
+                        return compat_sys_msgrcv(first, ipck.msgp, second,
+                                                 ipck.msgtyp, third);
+                }
+                return compat_sys_msgrcv(first, ptr, second, fifth, third);
+        }
+        case MSGGET:
+                return sys_msgget(first, second);
+        case MSGCTL:
+                return compat_sys_msgctl(first, second, compat_ptr(ptr));
+
+        case SHMAT: {
+                int err;
+                unsigned long raddr;
+
+                if (version == 1)
+                        return -EINVAL;
+                err = do_shmat(first, compat_ptr(ptr), second, &raddr,
+                               COMPAT_SHMLBA);
+                if (err < 0)
+                        return err;
+                return put_user(raddr, (compat_ulong_t *)compat_ptr(third));
+        }
+        case SHMDT:
+                return sys_shmdt(compat_ptr(ptr));
+        case SHMGET:
+                return sys_shmget(first, (unsigned)second, third);
+        case SHMCTL:
+                return compat_sys_shmctl(first, second, compat_ptr(ptr));
+        }
+
+        return -ENOSYS;
+}
+#endif
+#endif