1 files changed, 68 insertions, 0 deletions
diff --git a/winsup/cygwin/sec_posixacl.h b/winsup/cygwin/sec_posixacl.h
new file mode 100644
index 000000000..a3790a52b
--- /dev/null
+++ b/winsup/cygwin/sec_posixacl.h
@@ -0,0 +1,68 @@
+/* sec_posixacl.h: Internal definitions for POSIX ACLs.
+
+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. */
+
+#include <cygwin/acl.h>
+#include <sys/acl.h>
+#include <acl/libacl.h>
+
+/* Magic marker for acl_t. */
+#define ACL_MAGIC		(0xacdccdcadcaccacdULL)
+
+/* Only used internally as a_type for deleted entries. */
+#define ACL_DELETED_TAG		(0xffff)
+
+/* Only used internally from acl_to_text/acl_to_any_text. */
+#define TEXT_END_SEPARATOR	(0x1000)
+#define TEXT_IS_POSIX		(0x2000)
+
+/* Internal ACL representation. */
+struct __acl_t
+{
+  uint64_t magic;	/* Must be ACL_MAGIC.				*/
+  uint16_t max_count;	/* Max. number of entries.			*/
+  uint16_t count;	/* Number of used entries.			*/
+  uint16_t deleted;	/* Number of used but deleted entries.		*/
+  uint16_t next;	/* Next entry to be returned by acl_get_entry.	*/
+  aclent_t *entry;	/* Pointer to variable array of ACL entries.	*/
+};
+
+inline acl_entry_t
+__to_entry (acl_t acl, uint16_t idx)
+{
+  return ((uint64_t) idx << 48) | (uint64_t) acl;
+}
+#define __to_permset(a,i)	((acl_permset_t)__to_entry((a),(i)))
+
+inline acl_t
+__from_entry (acl_entry_t entry_d, uint16_t &idx)
+{
+  idx = entry_d >> 48;
+  acl_t acl = (acl_t) (entry_d & ~((uint64_t) 0xffff << 48));
+  if (acl->magic != ACL_MAGIC)
+    return NULL;
+  if (idx >= acl->count)
+    return NULL;
+  if (acl->entry[idx].a_type == ACL_DELETED_TAG)
+    return NULL;
+  return acl;
+}
+#define __from_permset(p,i)	__from_entry((acl_permset_t)(p),(i))
+
+/* External (but opaque) ACL representation. */
+struct __acl_ext_t
+{
+  uint16_t count;	/* Number of used entries.			*/
+  aclent_t entry[0];	/* Variable array of ACL entries.		*/
+};
+
+/* Shared functions defined in sec_acl.cc. */
+mode_t __aclcalcmask (aclent_t *, int);
+int __aclsort (int, aclent_t *);
+int __aclcheck (aclent_t *, int, int *, bool);
+char *__acltotext (aclent_t *, int, const char *, char, int);
+void *__aclfromtext (const char *, int *, bool);