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-rw-r--r--ipc/shm.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index 2e31545035a6..342024de3b9d 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -1439,6 +1439,25 @@ SYSCALL_DEFINE3(shmat, int, shmid, char __user *, shmaddr, int, shmflg)
return (long)ret;
}
+#ifdef CONFIG_COMPAT
+
+#ifndef COMPAT_SHMLBA
+#define COMPAT_SHMLBA SHMLBA
+#endif
+
+COMPAT_SYSCALL_DEFINE3(shmat, int, shmid, compat_uptr_t, shmaddr, int, shmflg)
+{
+ unsigned long ret;
+ long err;
+
+ err = do_shmat(shmid, compat_ptr(shmaddr), shmflg, &ret, COMPAT_SHMLBA);
+ if (err)
+ return err;
+ force_successful_syscall_return();
+ return (long)ret;
+}
+#endif
+
/*
* detach and kill segment if marked destroyed.
* The work is done in shm_close.