lustre/include/lustre_eacl.h

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   3  *
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   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
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  28 /*
  29  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/lustre/include/lustre_idmap.h
  37  *
  38  * MDS data structures.
  39  * See also lustre_idl.h for wire formats of requests.
  40  */
  41
  42 #ifndef _LUSTRE_EACL_H
  43 #define _LUSTRE_EACL_H
  44
  45 /** \defgroup eacl eacl
  46  *
  47  * @{
  48  */
  49
  50 #ifdef CONFIG_FS_POSIX_ACL
  51
  52 # ifdef HAVE_XATTR_ACL
  53 #  include <linux/xattr_acl.h>
  54 # endif /* HAVE_XATTR_ACL */
  55 # ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
  56 #  include <linux/posix_acl_xattr.h>
  57 # endif /* HAVE_LINUX_POSIX_ACL_XATTR_H */
  58
  59 #include <lustre_idmap.h>
  60 #include <md_object.h>
  61 #include <lu_object.h>
  62
  63 typedef struct {
  64         __u16                   e_tag;
  65         __u16                   e_perm;
  66         __u32                   e_id;
  67         __u32                   e_stat;
  68 } ext_acl_xattr_entry;
  69
  70 typedef struct {
  71         __u32                   a_count;
  72         ext_acl_xattr_entry     a_entries[0];
  73 } ext_acl_xattr_header;
  74
  75 #define CFS_ACL_XATTR_SIZE(count, prefix) \
  76         (sizeof(prefix ## _header) + (count) * sizeof(prefix ## _entry))
  77
  78 #define CFS_ACL_XATTR_COUNT(size, prefix) \
  79         (((size) - sizeof(prefix ## _header)) / sizeof(prefix ## _entry))
  80
  81 extern int lustre_posix_acl_permission(struct md_ucred *mu, struct lu_attr *la,
  82                                        int want, posix_acl_xattr_entry *entry,
  83                                        int count);
  84 extern int lustre_posix_acl_chmod_masq(posix_acl_xattr_entry *entry,
  85                                        __u32 mode, int count);
  86 extern int lustre_posix_acl_create_masq(posix_acl_xattr_entry *entry,
  87                                         __u32 *pmode, int count);
  88
  89 extern ext_acl_xattr_header *
  90 lustre_posix_acl_xattr_2ext(posix_acl_xattr_header *header, int size);
  91 extern int
  92 lustre_posix_acl_xattr_filter(posix_acl_xattr_header *header, int size,
  93                               posix_acl_xattr_header **out);
  94 extern int
  95 lustre_posix_acl_xattr_id2client(struct md_ucred *mu,
  96                                  struct lustre_idmap_table *t,
  97                                  posix_acl_xattr_header *header,
  98                                  int size, int flags);
  99 extern void
 100 lustre_posix_acl_xattr_free(posix_acl_xattr_header *header, int size);
 101 extern int
 102 lustre_ext_acl_xattr_id2server(struct md_ucred *mu,
 103                                struct lustre_idmap_table *t,
 104                                ext_acl_xattr_header *header);
 105 extern void
 106 lustre_ext_acl_xattr_free(ext_acl_xattr_header *header);
 107 extern int
 108 lustre_acl_xattr_merge2posix(posix_acl_xattr_header *posix_header, int size,
 109                              ext_acl_xattr_header *ext_header,
 110                              posix_acl_xattr_header **out);
 111 extern ext_acl_xattr_header *
 112 lustre_acl_xattr_merge2ext(posix_acl_xattr_header *posix_header, int size,
 113                            ext_acl_xattr_header *ext_header);
 114
 115 #endif /* CONFIG_FS_POSIX_ACL */
 116
 117 /** @} eacl */
 118
 119 #endif