diff options
Diffstat (limited to '')
-rw-r--r-- | fs/gfs2/xattr.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/fs/gfs2/xattr.h b/fs/gfs2/xattr.h new file mode 100644 index 0000000000..2aed9d7d48 --- /dev/null +++ b/fs/gfs2/xattr.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. + * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. + */ + +#ifndef __EATTR_DOT_H__ +#define __EATTR_DOT_H__ + +struct gfs2_inode; +struct iattr; + +#define GFS2_EA_REC_LEN(ea) be32_to_cpu((ea)->ea_rec_len) +#define GFS2_EA_DATA_LEN(ea) be32_to_cpu((ea)->ea_data_len) + +#define GFS2_EA_SIZE(ea) \ +ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \ + ((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \ + (sizeof(__be64) * (ea)->ea_num_ptrs)), 8) + +#define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs) +#define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST) + +#define GFS2_EAREQ_SIZE_STUFFED(er) \ +ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8) + +#define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1)) +#define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len) + +#define GFS2_EA2DATAPTRS(ea) \ +((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8))) + +#define GFS2_EA2NEXT(ea) \ +((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea))) + +#define GFS2_EA_BH2FIRST(bh) \ +((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header))) + +struct gfs2_ea_request { + const char *er_name; + char *er_data; + unsigned int er_name_len; + unsigned int er_data_len; + unsigned int er_type; /* GFS2_EATYPE_... */ +}; + +struct gfs2_ea_location { + struct buffer_head *el_bh; + struct gfs2_ea_header *el_ea; + struct gfs2_ea_header *el_prev; +}; + +extern int __gfs2_xattr_set(struct inode *inode, const char *name, + const void *value, size_t size, + int flags, int type); +extern ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size); +extern int gfs2_ea_dealloc(struct gfs2_inode *ip); + +/* Exported to acl.c */ + +extern int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **data); + +#endif /* __EATTR_DOT_H__ */ |