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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | /* * Copyright (c) 2001-2004 Silicon Graphics, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * Further, this software is distributed without any warranty that it is * free of the rightful claim of any third person regarding infringement * or the like. Any license provided herein, whether implied or * otherwise, applies only to this software file. Patent licenses, if * any, provided herein do not apply to combinations of this program with * other software, or any other product whatsoever. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston MA 02111-1307, USA. * * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, * Mountain View, CA 94043, or: * * http://www.sgi.com * * For further information regarding this notice, see: * * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ */ #ifndef __XFS_ACL_H__ #define __XFS_ACL_H__ /* * Access Control Lists */ typedef __uint16_t xfs_acl_perm_t; typedef __int32_t xfs_acl_type_t; typedef __int32_t xfs_acl_tag_t; typedef __int32_t xfs_acl_id_t; #define XFS_ACL_MAX_ENTRIES 25 #define XFS_ACL_NOT_PRESENT (-1) typedef struct xfs_acl_entry { xfs_acl_tag_t ae_tag; xfs_acl_id_t ae_id; xfs_acl_perm_t ae_perm; } xfs_acl_entry_t; typedef struct xfs_acl { __int32_t acl_cnt; xfs_acl_entry_t acl_entry[XFS_ACL_MAX_ENTRIES]; } xfs_acl_t; /* On-disk XFS extended attribute names */ #define SGI_ACL_FILE "SGI_ACL_FILE" #define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT" #define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1) #define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1) #ifdef CONFIG_XFS_POSIX_ACL struct vattr; struct vnode; struct xfs_inode; extern struct kmem_zone *xfs_acl_zone; #define xfs_acl_zone_init(zone, name) \ (zone) = kmem_zone_init(sizeof(xfs_acl_t), name) #define xfs_acl_zone_destroy(zone) kmem_cache_destroy(zone) extern int xfs_acl_inherit(struct vnode *, struct vattr *, xfs_acl_t *); extern int xfs_acl_iaccess(struct xfs_inode *, mode_t, cred_t *); extern int xfs_acl_vtoacl(struct vnode *, xfs_acl_t *, xfs_acl_t *); extern int xfs_acl_vhasacl_access(struct vnode *); extern int xfs_acl_vhasacl_default(struct vnode *); extern int xfs_acl_vset(struct vnode *, void *, size_t, int); extern int xfs_acl_vget(struct vnode *, void *, size_t, int); extern int xfs_acl_vremove(struct vnode *vp, int); #define _ACL_TYPE_ACCESS 1 #define _ACL_TYPE_DEFAULT 2 #define _ACL_PERM_INVALID(perm) ((perm) & ~(ACL_READ|ACL_WRITE|ACL_EXECUTE)) #define _ACL_INHERIT(c,v,d) (xfs_acl_inherit(c,v,d)) #define _ACL_GET_ACCESS(pv,pa) (xfs_acl_vtoacl(pv,pa,NULL) == 0) #define _ACL_GET_DEFAULT(pv,pd) (xfs_acl_vtoacl(pv,NULL,pd) == 0) #define _ACL_ACCESS_EXISTS xfs_acl_vhasacl_access #define _ACL_DEFAULT_EXISTS xfs_acl_vhasacl_default #define _ACL_XFS_IACCESS(i,m,c) (XFS_IFORK_Q(i) ? xfs_acl_iaccess(i,m,c) : -1) #define _ACL_ALLOC(a) ((a) = kmem_zone_alloc(xfs_acl_zone, KM_SLEEP)) #define _ACL_FREE(a) ((a)? kmem_zone_free(xfs_acl_zone, (a)):(void)0) #else #define xfs_acl_zone_init(zone,name) #define xfs_acl_zone_destroy(zone) #define xfs_acl_vset(v,p,sz,t) (-EOPNOTSUPP) #define xfs_acl_vget(v,p,sz,t) (-EOPNOTSUPP) #define xfs_acl_vremove(v,t) (-EOPNOTSUPP) #define xfs_acl_vhasacl_access(v) (0) #define xfs_acl_vhasacl_default(v) (0) #define _ACL_ALLOC(a) (1) /* successfully allocate nothing */ #define _ACL_FREE(a) ((void)0) #define _ACL_INHERIT(c,v,d) (0) #define _ACL_GET_ACCESS(pv,pa) (0) #define _ACL_GET_DEFAULT(pv,pd) (0) #define _ACL_ACCESS_EXISTS (NULL) #define _ACL_DEFAULT_EXISTS (NULL) #define _ACL_XFS_IACCESS(i,m,c) (-1) #endif #endif /* __XFS_ACL_H__ */ |