root/include/linux/nfsacl.h

INCLUDED FROM

DEFINITIONS

1. nfsacl_size

/*
 * File: linux/nfsacl.h
 *
 * (C) 2003 Andreas Gruenbacher <agruen@suse.de>
 */
#ifndef __LINUX_NFSACL_H
#define __LINUX_NFSACL_H

#define NFS_ACL_PROGRAM 100227

#define ACLPROC2_GETACL         1
#define ACLPROC2_SETACL         2
#define ACLPROC2_GETATTR        3
#define ACLPROC2_ACCESS         4

#define ACLPROC3_GETACL         1
#define ACLPROC3_SETACL         2


/* Flags for the getacl/setacl mode */
#define NFS_ACL                 0x0001
#define NFS_ACLCNT              0x0002
#define NFS_DFACL               0x0004
#define NFS_DFACLCNT            0x0008

/* Flag for Default ACL entries */
#define NFS_ACL_DEFAULT         0x1000

#ifdef __KERNEL__

#include <linux/posix_acl.h>

/* Maximum number of ACL entries over NFS */
#define NFS_ACL_MAX_ENTRIES     1024

#define NFSACL_MAXWORDS         (2*(2+3*NFS_ACL_MAX_ENTRIES))
#define NFSACL_MAXPAGES         ((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \
                                 >> PAGE_SHIFT)

static inline unsigned int
nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
{
        unsigned int w = 16;
        w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;
        if (acl_default)
                w += max((int)acl_default->a_count, 4) * 12;
        return w;
}

extern unsigned int
nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
              struct posix_acl *acl, int encode_entries, int typeflag);
extern unsigned int
nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
              struct posix_acl **pacl);

#endif /* __KERNEL__ */
#endif  /* __LINUX_NFSACL_H */