1 files changed, 89 insertions, 0 deletions
diff --git a/winsup/cygwin/include/cygwin/shm.h b/winsup/cygwin/include/cygwin/shm.h
new file mode 100644
index 000000000..eb037ba19
--- /dev/null
+++ b/winsup/cygwin/include/cygwin/shm.h
@@ -0,0 +1,89 @@
+/* sys/shm.h
+
+   Copyright 2001 Red Hat Inc. 
+   Written by Robert Collins <rbtcollins@hotmail.com>
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#ifndef _SYS_SHM_H
+#define _SYS_SHM_H
+
+#include <cygwin/ipc.h>
+
+#define SHM_RDONLY 1
+/* 64 Kb was hardcoded for x86. MS states this may change, but we need it in the header
+ * file.
+ */
+#define SHMLBA     65536
+#define SHM_RND	   1
+
+typedef long int shmatt_t;
+
+#if defined(__INSIDE_CYGWIN__) && defined(__cplusplus)
+
+class _shmattach {
+public:
+  void *data;
+  int shmflg;
+  class _shmattach *next;
+};
+
+class shmid_ds {
+public:
+  struct   ipc_perm shm_perm;
+  size_t   shm_segsz;
+  pid_t    shm_lpid;
+  pid_t    shm_cpid;
+  shmatt_t shm_nattch;
+  time_t   shm_atime;
+  time_t   shm_dtime;
+  time_t   shm_ctime;
+  void *mapptr;
+};
+
+class shmnode {
+public:
+  class shmid_ds * shmds;
+  int shm_id;
+  class shmnode *next;
+  key_t key;
+  HANDLE filemap;
+  HANDLE attachmap;
+  class _shmattach *attachhead;
+};
+
+#else
+/* this is what we return when queried. It has no bitwise correspondence
+ * the internal structures 
+ */
+struct shmid_ds {
+  struct   ipc_perm shm_perm;
+  size_t   shm_segsz;
+  pid_t    shm_lpid;
+  pid_t    shm_cpid;
+  shmatt_t shm_nattch;
+  time_t   shm_atime;
+  time_t   shm_dtime;
+  time_t   shm_ctime;
+};
+#endif /* __INSIDE_CYGWIN__ */
+
+void *shmat(int, const void *, int);
+int   shmctl(int, int, struct shmid_ds *);
+int   shmdt(const void *);
+int   shmget(key_t, size_t, int);
+
+#endif /* _SYS_SHM_H */
+
+#ifdef __cplusplus
+}
+#endif