[PATCH] m68knommu: add SHM support

It turns out SHMAT, SHMDT, SHMGET and SHMCTL support in sys_ipc() for
m68knommu in 2.6 kernel(uClinux-dist-20060803 release) is missing.
(copied from m68k sources, report by David Wu <davidwu@arcturusnetworks.com>)

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/m68knommu/kernel/sys_m68k.c b/arch/m68knommu/kernel/sys_m68k.c
index c3494b8447d155f890a319097b97fdf352eb4319..3265b2d734dbb8b9fc37659475d4863506b86015 100644 (file)
--- a/arch/m68knommu/kernel/sys_m68k.c
+++ b/arch/m68knommu/kernel/sys_m68k.c
@@ -137,7 +137,7 @@ asmlinkage int old_select(struct sel_arg_struct *arg)
 asmlinkage int sys_ipc (uint call, int first, int second,
                        int third, void *ptr, long fifth)
 {
-       int version;
+       int version, ret;
 
        version = call >> 16; /* hack for backward compatibility */
        call &= 0xffff;
@@ -190,6 +190,27 @@ asmlinkage int sys_ipc (uint call, int first, int second,
                default:
                        return -EINVAL;
                }
+       if (call <= SHMCTL)
+               switch (call) {
+               case SHMAT:
+                       switch (version) {
+                       default: {
+                               ulong raddr;
+                               ret = do_shmat (first, ptr, second, &raddr);
+                               if (ret)
+                                       return ret;
+                               return put_user (raddr, (ulong __user *) third);
+                       }
+                       }
+               case SHMDT:
+                       return sys_shmdt (ptr);
+               case SHMGET:
+                       return sys_shmget (first, second, third);
+               case SHMCTL:
+                       return sys_shmctl (first, second, ptr);
+               default:
+                       return -ENOSYS;
+               }
 
        return -EINVAL;
 }