/* Internal implementation of access control lists.
- Copyright (C) 2002-2003, 2005-2008 Free Software Foundation, Inc.
+ Copyright (C) 2002-2003, 2005-2014 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
- Written by Paul Eggert and Andreas Gruenbacher. */
+ Written by Paul Eggert, Andreas Grünbacher, and Bruno Haible. */
#include "acl.h"
#if HAVE_SYS_ACL_H
# include <sys/acl.h>
#endif
-#if defined HAVE_ACL && ! defined GETACLCNT && defined ACL_CNT
+#if defined HAVE_FACL && ! defined GETACLCNT && defined ACL_CNT
# define GETACLCNT ACL_CNT
#endif
# include <acl/libacl.h>
#endif
-#include "error.h"
-#include "quote.h"
+/* On HP-UX >= 11.11, additional ACL API is available in <aclv.h>. */
+#if HAVE_ACLV_H
+# include <sys/types.h>
+# include <aclv.h>
+/* HP-UX 11.11 lacks these declarations. */
+extern int acl (char *, int, int, struct acl *);
+extern int aclsort (int, int, struct acl *);
+#endif
#include <errno.h>
-#ifndef ENOSYS
-# define ENOSYS (-1)
-#endif
-#ifndef ENOTSUP
-# define ENOTSUP (-1)
+
+#include <limits.h>
+#ifndef MIN
+# define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
-#include "gettext.h"
-#define _(msgid) gettext (msgid)
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t) -1)
+#endif
#ifndef HAVE_FCHMOD
# define HAVE_FCHMOD false
# define fchmod(fd, mode) (-1)
#endif
-#ifndef MIN_ACL_ENTRIES
-# define MIN_ACL_ENTRIES 4
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef ACL_INTERNAL_INLINE
+# define ACL_INTERNAL_INLINE _GL_INLINE
#endif
+#if USE_ACL
+
+# if HAVE_ACL_GET_FILE
+/* POSIX 1003.1e (draft 17 -- abandoned) specific version. */
+/* Linux, FreeBSD, Mac OS X, IRIX, Tru64 */
+
+# ifndef MIN_ACL_ENTRIES
+# define MIN_ACL_ENTRIES 4
+# endif
+
/* POSIX 1003.1e (draft 17) */
-#ifndef HAVE_ACL_GET_FD
-# define HAVE_ACL_GET_FD false
-# undef acl_get_fd
-# define acl_get_fd(fd) (NULL)
-#endif
+# ifdef HAVE_ACL_GET_FD
+/* Most platforms have a 1-argument acl_get_fd, only OSF/1 has a 2-argument
+ macro(!). */
+# if HAVE_ACL_FREE_TEXT /* OSF/1 */
+ACL_INTERNAL_INLINE acl_t
+rpl_acl_get_fd (int fd)
+{
+ return acl_get_fd (fd, ACL_TYPE_ACCESS);
+}
+# undef acl_get_fd
+# define acl_get_fd rpl_acl_get_fd
+# endif
+# else
+# define HAVE_ACL_GET_FD false
+# undef acl_get_fd
+# define acl_get_fd(fd) (NULL)
+# endif
/* POSIX 1003.1e (draft 17) */
-#ifndef HAVE_ACL_SET_FD
-# define HAVE_ACL_SET_FD false
-# undef acl_set_fd
-# define acl_set_fd(fd, acl) (-1)
-#endif
+# ifdef HAVE_ACL_SET_FD
+/* Most platforms have a 2-argument acl_set_fd, only OSF/1 has a 3-argument
+ macro(!). */
+# if HAVE_ACL_FREE_TEXT /* OSF/1 */
+ACL_INTERNAL_INLINE int
+rpl_acl_set_fd (int fd, acl_t acl)
+{
+ return acl_set_fd (fd, ACL_TYPE_ACCESS, acl);
+}
+# undef acl_set_fd
+# define acl_set_fd rpl_acl_set_fd
+# endif
+# else
+# define HAVE_ACL_SET_FD false
+# undef acl_set_fd
+# define acl_set_fd(fd, acl) (-1)
+# endif
+
+/* POSIX 1003.1e (draft 13) */
+# if ! HAVE_ACL_FREE_TEXT
+# define acl_free_text(buf) acl_free (buf)
+# endif
/* Linux-specific */
-#ifndef HAVE_ACL_EXTENDED_FILE
-# define HAVE_ACL_EXTENDED_FILE false
-# define acl_extended_file(name) (-1)
-#endif
+# ifndef HAVE_ACL_EXTENDED_FILE
+# define HAVE_ACL_EXTENDED_FILE false
+# define acl_extended_file(name) (-1)
+# endif
/* Linux-specific */
-#ifndef HAVE_ACL_FROM_MODE
-# define HAVE_ACL_FROM_MODE false
-# define acl_from_mode(mode) (NULL)
-#endif
+# ifndef HAVE_ACL_FROM_MODE
+# define HAVE_ACL_FROM_MODE false
+# define acl_from_mode(mode) (NULL)
+# endif
/* Set to 1 if a file's mode is implicit by the ACL.
Set to 0 if a file's mode is stored independently from the ACL. */
-#if HAVE_ACL_COPY_EXT_NATIVE && HAVE_ACL_CREATE_ENTRY_NP /* MacOS X */
-# define MODE_INSIDE_ACL 0
-#else
-# define MODE_INSIDE_ACL 1
-#endif
+# if (HAVE_ACL_COPY_EXT_NATIVE && HAVE_ACL_CREATE_ENTRY_NP) || defined __sgi /* Mac OS X, IRIX */
+# define MODE_INSIDE_ACL 0
+# else
+# define MODE_INSIDE_ACL 1
+# endif
+
+/* Return the number of entries in ACL.
+ Return -1 and set errno upon failure to determine it. */
+/* Define a replacement for acl_entries if needed. (Only Linux has it.) */
+# if !HAVE_ACL_ENTRIES
+# define acl_entries rpl_acl_entries
+extern int acl_entries (acl_t);
+# endif
+
+# if HAVE_ACL_TYPE_EXTENDED /* Mac OS X */
+/* ACL is an ACL, from a file, stored as type ACL_TYPE_EXTENDED.
+ Return 1 if the given ACL is non-trivial.
+ Return 0 if it is trivial. */
+extern int acl_extended_nontrivial (acl_t);
+# else
+/* ACL is an ACL, from a file, stored as type ACL_TYPE_ACCESS.
+ Return 1 if the given ACL is non-trivial.
+ Return 0 if it is trivial, i.e. equivalent to a simple stat() mode.
+ Return -1 and set errno upon failure to determine it. */
+extern int acl_access_nontrivial (acl_t);
+# endif
+
+# elif HAVE_FACL && defined GETACL /* Solaris, Cygwin, not HP-UX */
-#if defined __APPLE__ && defined __MACH__ /* MacOS X */
-# define ACL_NOT_WELL_SUPPORTED(Err) \
- ((Err) == ENOTSUP || (Err) == ENOSYS || (Err) == EINVAL || (Err) == EBUSY || (Err) == ENOENT)
-#else
-# define ACL_NOT_WELL_SUPPORTED(Err) \
- ((Err) == ENOTSUP || (Err) == ENOSYS || (Err) == EINVAL || (Err) == EBUSY)
-#endif
+/* Set to 1 if a file's mode is implicit by the ACL.
+ Set to 0 if a file's mode is stored independently from the ACL. */
+# if defined __CYGWIN__ /* Cygwin */
+# define MODE_INSIDE_ACL 0
+# else /* Solaris */
+# define MODE_INSIDE_ACL 1
+# endif
+
+/* Return 1 if the given ACL is non-trivial.
+ Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
+extern int acl_nontrivial (int count, aclent_t *entries);
+
+# ifdef ACE_GETACL /* Solaris 10 */
+
+/* Test an ACL retrieved with ACE_GETACL.
+ Return 1 if the given ACL, consisting of COUNT entries, is non-trivial.
+ Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
+extern int acl_ace_nontrivial (int count, ace_t *entries);
+
+/* Definitions for when the built executable is executed on Solaris 10
+ (newer version) or Solaris 11. */
+/* For a_type. */
+# define OLD_ALLOW 0
+# define OLD_DENY 1
+# define NEW_ACE_ACCESS_ALLOWED_ACE_TYPE 0 /* replaces ALLOW */
+# define NEW_ACE_ACCESS_DENIED_ACE_TYPE 1 /* replaces DENY */
+/* For a_flags. */
+# define OLD_ACE_OWNER 0x0100
+# define OLD_ACE_GROUP 0x0200
+# define OLD_ACE_OTHER 0x0400
+# define NEW_ACE_OWNER 0x1000
+# define NEW_ACE_GROUP 0x2000
+# define NEW_ACE_IDENTIFIER_GROUP 0x0040
+# define NEW_ACE_EVERYONE 0x4000
+/* For a_access_mask. */
+# define NEW_ACE_READ_DATA 0x001 /* corresponds to 'r' */
+# define NEW_ACE_WRITE_DATA 0x002 /* corresponds to 'w' */
+# define NEW_ACE_APPEND_DATA 0x004
+# define NEW_ACE_READ_NAMED_ATTRS 0x008
+# define NEW_ACE_WRITE_NAMED_ATTRS 0x010
+# define NEW_ACE_EXECUTE 0x020
+# define NEW_ACE_DELETE_CHILD 0x040
+# define NEW_ACE_READ_ATTRIBUTES 0x080
+# define NEW_ACE_WRITE_ATTRIBUTES 0x100
+# define NEW_ACE_DELETE 0x10000
+# define NEW_ACE_READ_ACL 0x20000
+# define NEW_ACE_WRITE_ACL 0x40000
+# define NEW_ACE_WRITE_OWNER 0x80000
+# define NEW_ACE_SYNCHRONIZE 0x100000
+
+# endif
+
+# elif HAVE_GETACL /* HP-UX */
+
+/* Return 1 if the given ACL is non-trivial.
+ Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
+extern int acl_nontrivial (int count, struct acl_entry *entries, struct stat *sb);
+
+# if HAVE_ACLV_H /* HP-UX >= 11.11 */
+
+/* Return 1 if the given ACL is non-trivial.
+ Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
+extern int aclv_nontrivial (int count, struct acl *entries);
+
+# endif
+
+# elif HAVE_ACLX_GET && 0 /* AIX */
+
+/* TODO */
+
+# elif HAVE_STATACL /* older AIX */
+
+/* Return 1 if the given ACL is non-trivial.
+ Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
+extern int acl_nontrivial (struct acl *a);
+
+# elif HAVE_ACLSORT /* NonStop Kernel */
+
+/* Return 1 if the given ACL is non-trivial.
+ Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
+extern int acl_nontrivial (int count, struct acl *entries);
+
+# endif
-/* Define a replacement for acl_entries if needed. */
-#if USE_ACL && HAVE_ACL_GET_FILE && HAVE_ACL_FREE && !HAVE_ACL_ENTRIES
-# define acl_entries rpl_acl_entries
-int acl_entries (acl_t);
#endif
+
+_GL_INLINE_HEADER_END
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