1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 5 */ 6 7 #ifndef __EATTR_DOT_H__ 8 #define __EATTR_DOT_H__ 9 10 struct gfs2_inode; 11 struct iattr; 12 13 #define GFS2_EA_REC_LEN(ea) be32_to_cpu((ea)->ea_rec_len) 14 #define GFS2_EA_DATA_LEN(ea) be32_to_cpu((ea)->ea_data_len) 15 16 #define GFS2_EA_SIZE(ea) \ 17 ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \ 18 ((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \ 19 (sizeof(__be64) * (ea)->ea_num_ptrs)), 8) 20 21 #define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs) 22 #define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST) 23 24 #define GFS2_EAREQ_SIZE_STUFFED(er) \ 25 ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8) 26 27 #define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1)) 28 #define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len) 29 30 #define GFS2_EA2DATAPTRS(ea) \ 31 ((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8))) 32 33 #define GFS2_EA2NEXT(ea) \ 34 ((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea))) 35 36 #define GFS2_EA_BH2FIRST(bh) \ 37 ((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header))) 38 39 struct gfs2_ea_request { 40 const char *er_name; 41 char *er_data; 42 unsigned int er_name_len; 43 unsigned int er_data_len; 44 unsigned int er_type; /* GFS2_EATYPE_... */ 45 }; 46 47 struct gfs2_ea_location { 48 struct buffer_head *el_bh; 49 struct gfs2_ea_header *el_ea; 50 struct gfs2_ea_header *el_prev; 51 }; 52 53 extern int __gfs2_xattr_set(struct inode *inode, const char *name, 54 const void *value, size_t size, 55 int flags, int type); 56 extern ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size); 57 extern int gfs2_ea_dealloc(struct gfs2_inode *ip); 58 59 /* Exported to acl.c */ 60 61 extern int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **data); 62 63 #endif /* __EATTR_DOT_H__ */ 64