NFSACL GETACL / SETACL structes

Question

I have a proxy server between the client and server.

I use XDR to read and modify NFS messages between them

for example if i want to edit the file size for and get attributes reply i use the struct and function

GETATTR3res

bool_t xdr_GETATTR3res ( XDR *xdrs, GETATTR3res *objp );

now i want to use the same method to modify replys for

RPC:

Program: NFSACL (100227)

Program version: 3

Procedure: GETACL (1) and SETACL (2)

i want to edit the (fattr3) attributes field with xdr

either a XDR function for NFSACL or even deconstructed XDR function for the fields NFSACL procedures have

Answer 1

I have found this list of structures that with smaller XDR function can be used to modify the attributes

struct GETACL3args {
    nfs_fh3 fh;
    uint32 mask;
};
typedef struct GETACL3args GETACL3args;

struct GETACL3resok {
    post_op_attr attr;
    vsecattr_t acl;
};
typedef struct GETACL3resok GETACL3resok;

struct GETACL3resfail {
    post_op_attr attr;
};
typedef struct GETACL3resfail GETACL3resfail;

struct GETACL3res {
    nfsstat3 status;
    union {
        GETACL3resok ok;
        GETACL3resfail fail;
    } res_u;
};
typedef struct GETACL3res GETACL3res;

struct SETACL3args {
    nfs_fh3 fh;
    vsecattr_t acl;
};
typedef struct SETACL3args SETACL3args;

struct SETACL3resok {
    post_op_attr attr;
};
typedef struct SETACL3resok SETACL3resok;

struct SETACL3resfail {
    post_op_attr attr;
};
typedef struct SETACL3resfail SETACL3resfail;

struct SETACL3res {
    nfsstat3 status;
    union {
        SETACL3resok ok;
        SETACL3resfail fail;
    } res_u;
};
typedef struct SETACL3res SETACL3res;

and using xdr_post_op_attr to decode and enconde back