lustre/include/lustre_eacl.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *   This file is part of Lustre, http://www.lustre.org
   5  *
   6  * MDS data structures.
   7  * See also lustre_idl.h for wire formats of requests.
   8  */
   9
  10 #ifndef _LUSTRE_EACL_H
  11 #define _LUSTRE_EACL_H
  12
  13 #ifdef CONFIG_FS_POSIX_ACL
  14
  15 # ifdef HAVE_XATTR_ACL
  16 #  include <linux/xattr_acl.h>
  17 # endif /* HAVE_XATTR_ACL */
  18 # ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
  19 #  include <linux/posix_acl_xattr.h>
  20 # endif /* HAVE_LINUX_POSIX_ACL_XATTR_H */
  21
  22 #include <lustre_idmap.h>
  23 #include <md_object.h>
  24 #include <lu_object.h>
  25
  26 typedef struct {
  27         __u16                   e_tag;
  28         __u16                   e_perm;
  29         __u32                   e_id;
  30         __u32                   e_stat;
  31 } ext_acl_xattr_entry;
  32
  33 typedef struct {
  34         __u32                   a_count;
  35         ext_acl_xattr_entry     a_entries[0];
  36 } ext_acl_xattr_header;
  37
  38 #define CFS_ACL_XATTR_SIZE(count, prefix) \
  39         (sizeof(prefix ## _header) + (count) * sizeof(prefix ## _entry))
  40
  41 #define CFS_ACL_XATTR_COUNT(size, prefix) \
  42         (((size) - sizeof(prefix ## _header)) / sizeof(prefix ## _entry))
  43
  44 extern int lustre_posix_acl_permission(struct md_ucred *mu, struct lu_attr *la,
  45                                        int want, posix_acl_xattr_entry *entry,
  46                                        int count);
  47 extern int lustre_posix_acl_chmod_masq(posix_acl_xattr_entry *entry,
  48                                        __u32 mode, int count);
  49 extern int lustre_posix_acl_create_masq(posix_acl_xattr_entry *entry,
  50                                         __u32 *pmode, int count);
  51
  52 extern ext_acl_xattr_header *
  53 lustre_posix_acl_xattr_2ext(posix_acl_xattr_header *header, int size);
  54 extern int
  55 lustre_posix_acl_xattr_filter(posix_acl_xattr_header *header, int size,
  56                               posix_acl_xattr_header **out);
  57 extern int
  58 lustre_posix_acl_xattr_id2client(struct md_ucred *mu,
  59                                  struct lustre_idmap_table *t,
  60                                  posix_acl_xattr_header *header,
  61                                  int size, int flags);
  62 extern void
  63 lustre_posix_acl_xattr_free(posix_acl_xattr_header *header, int size);
  64 extern int
  65 lustre_ext_acl_xattr_id2server(struct md_ucred *mu,
  66                                struct lustre_idmap_table *t,
  67                                ext_acl_xattr_header *header);
  68 extern void
  69 lustre_ext_acl_xattr_free(ext_acl_xattr_header *header);
  70 extern int
  71 lustre_acl_xattr_merge2posix(posix_acl_xattr_header *posix_header, int size,
  72                              ext_acl_xattr_header *ext_header,
  73                              posix_acl_xattr_header **out);
  74 extern ext_acl_xattr_header *
  75 lustre_acl_xattr_merge2ext(posix_acl_xattr_header *posix_header, int size,
  76                            ext_acl_xattr_header *ext_header);
  77
  78 #endif /* CONFIG_FS_POSIX_ACL */
  79
  80 #endif