lustre/include/lustre_eacl.h

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  10  * as published by the Free Software Foundation.
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  15  * General Public License version 2 for more details (a copy is included
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  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. 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 #ifdef CONFIG_FS_POSIX_ACL
  46
  47 # ifdef HAVE_XATTR_ACL
  48 #  include <linux/xattr_acl.h>
  49 # endif /* HAVE_XATTR_ACL */
  50 # ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
  51 #  include <linux/posix_acl_xattr.h>
  52 # endif /* HAVE_LINUX_POSIX_ACL_XATTR_H */
  53
  54 #include <lustre_idmap.h>
  55 #include <md_object.h>
  56 #include <lu_object.h>
  57
  58 typedef struct {
  59         __u16                   e_tag;
  60         __u16                   e_perm;
  61         __u32                   e_id;
  62         __u32                   e_stat;
  63 } ext_acl_xattr_entry;
  64
  65 typedef struct {
  66         __u32                   a_count;
  67         ext_acl_xattr_entry     a_entries[0];
  68 } ext_acl_xattr_header;
  69
  70 #define CFS_ACL_XATTR_SIZE(count, prefix) \
  71         (sizeof(prefix ## _header) + (count) * sizeof(prefix ## _entry))
  72
  73 #define CFS_ACL_XATTR_COUNT(size, prefix) \
  74         (((size) - sizeof(prefix ## _header)) / sizeof(prefix ## _entry))
  75
  76 extern int lustre_posix_acl_permission(struct md_ucred *mu, struct lu_attr *la,
  77                                        int want, posix_acl_xattr_entry *entry,
  78                                        int count);
  79 extern int lustre_posix_acl_chmod_masq(posix_acl_xattr_entry *entry,
  80                                        __u32 mode, int count);
  81 extern int lustre_posix_acl_create_masq(posix_acl_xattr_entry *entry,
  82                                         __u32 *pmode, int count);
  83
  84 extern ext_acl_xattr_header *
  85 lustre_posix_acl_xattr_2ext(posix_acl_xattr_header *header, int size);
  86 extern int
  87 lustre_posix_acl_xattr_filter(posix_acl_xattr_header *header, int size,
  88                               posix_acl_xattr_header **out);
  89 extern int
  90 lustre_posix_acl_xattr_id2client(struct md_ucred *mu,
  91                                  struct lustre_idmap_table *t,
  92                                  posix_acl_xattr_header *header,
  93                                  int size, int flags);
  94 extern void
  95 lustre_posix_acl_xattr_free(posix_acl_xattr_header *header, int size);
  96 extern int
  97 lustre_ext_acl_xattr_id2server(struct md_ucred *mu,
  98                                struct lustre_idmap_table *t,
  99                                ext_acl_xattr_header *header);
 100 extern void
 101 lustre_ext_acl_xattr_free(ext_acl_xattr_header *header);
 102 extern int
 103 lustre_acl_xattr_merge2posix(posix_acl_xattr_header *posix_header, int size,
 104                              ext_acl_xattr_header *ext_header,
 105                              posix_acl_xattr_header **out);
 106 extern ext_acl_xattr_header *
 107 lustre_acl_xattr_merge2ext(posix_acl_xattr_header *posix_header, int size,
 108                            ext_acl_xattr_header *ext_header);
 109
 110 #endif /* CONFIG_FS_POSIX_ACL */
 111
 112 #endif