1 /* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 4 * 5 * This copyrighted material is made available to anyone wishing to use, 6 * modify, copy, or redistribute it subject to the terms and conditions 7 * of the GNU General Public License version 2. 8 */ 9 10 #ifndef __EATTR_DOT_H__ 11 #define __EATTR_DOT_H__ 12 13 struct gfs2_inode; 14 struct iattr; 15 16 #define GFS2_EA_REC_LEN(ea) be32_to_cpu((ea)->ea_rec_len) 17 #define GFS2_EA_DATA_LEN(ea) be32_to_cpu((ea)->ea_data_len) 18 19 #define GFS2_EA_SIZE(ea) \ 20 ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \ 21 ((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \ 22 (sizeof(__be64) * (ea)->ea_num_ptrs)), 8) 23 24 #define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs) 25 #define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST) 26 27 #define GFS2_EAREQ_SIZE_STUFFED(er) \ 28 ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8) 29 30 #define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1)) 31 #define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len) 32 33 #define GFS2_EA2DATAPTRS(ea) \ 34 ((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8))) 35 36 #define GFS2_EA2NEXT(ea) \ 37 ((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea))) 38 39 #define GFS2_EA_BH2FIRST(bh) \ 40 ((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header))) 41 42 struct gfs2_ea_request { 43 const char *er_name; 44 char *er_data; 45 unsigned int er_name_len; 46 unsigned int er_data_len; 47 unsigned int er_type; /* GFS2_EATYPE_... */ 48 }; 49 50 struct gfs2_ea_location { 51 struct buffer_head *el_bh; 52 struct gfs2_ea_header *el_ea; 53 struct gfs2_ea_header *el_prev; 54 }; 55 56 extern int __gfs2_xattr_set(struct inode *inode, const char *name, 57 const void *value, size_t size, 58 int flags, int type); 59 extern ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size); 60 extern int gfs2_ea_dealloc(struct gfs2_inode *ip); 61 62 /* Exported to acl.c */ 63 64 extern int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **data); 65 66 #endif /* __EATTR_DOT_H__ */ 67