1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* XDR types for nfsd. This is mainly a typing exercise. */ 3 4 #ifndef LINUX_NFSD_H 5 #define LINUX_NFSD_H 6 7 #include <linux/vfs.h> 8 #include "nfsd.h" 9 #include "nfsfh.h" 10 11 struct nfsd_fhandle { 12 struct svc_fh fh; 13 }; 14 15 struct nfsd_sattrargs { 16 struct svc_fh fh; 17 struct iattr attrs; 18 }; 19 20 struct nfsd_diropargs { 21 struct svc_fh fh; 22 char * name; 23 unsigned int len; 24 }; 25 26 struct nfsd_readargs { 27 struct svc_fh fh; 28 __u32 offset; 29 __u32 count; 30 }; 31 32 struct nfsd_writeargs { 33 svc_fh fh; 34 __u32 offset; 35 int len; 36 struct kvec first; 37 }; 38 39 struct nfsd_createargs { 40 struct svc_fh fh; 41 char * name; 42 unsigned int len; 43 struct iattr attrs; 44 }; 45 46 struct nfsd_renameargs { 47 struct svc_fh ffh; 48 char * fname; 49 unsigned int flen; 50 struct svc_fh tfh; 51 char * tname; 52 unsigned int tlen; 53 }; 54 55 struct nfsd_linkargs { 56 struct svc_fh ffh; 57 struct svc_fh tfh; 58 char * tname; 59 unsigned int tlen; 60 }; 61 62 struct nfsd_symlinkargs { 63 struct svc_fh ffh; 64 char * fname; 65 unsigned int flen; 66 char * tname; 67 unsigned int tlen; 68 struct iattr attrs; 69 struct kvec first; 70 }; 71 72 struct nfsd_readdirargs { 73 struct svc_fh fh; 74 __u32 cookie; 75 __u32 count; 76 }; 77 78 struct nfsd_stat { 79 __be32 status; 80 }; 81 82 struct nfsd_attrstat { 83 __be32 status; 84 struct svc_fh fh; 85 struct kstat stat; 86 }; 87 88 struct nfsd_diropres { 89 __be32 status; 90 struct svc_fh fh; 91 struct kstat stat; 92 }; 93 94 struct nfsd_readlinkres { 95 __be32 status; 96 int len; 97 struct page *page; 98 }; 99 100 struct nfsd_readres { 101 __be32 status; 102 struct svc_fh fh; 103 unsigned long count; 104 struct kstat stat; 105 struct page **pages; 106 }; 107 108 struct nfsd_readdirres { 109 /* Components of the reply */ 110 __be32 status; 111 112 int count; 113 114 /* Used to encode the reply's entry list */ 115 struct xdr_stream xdr; 116 struct xdr_buf dirlist; 117 struct readdir_cd common; 118 unsigned int cookie_offset; 119 }; 120 121 struct nfsd_statfsres { 122 __be32 status; 123 struct kstatfs stats; 124 }; 125 126 /* 127 * Storage requirements for XDR arguments and results. 128 */ 129 union nfsd_xdrstore { 130 struct nfsd_sattrargs sattr; 131 struct nfsd_diropargs dirop; 132 struct nfsd_readargs read; 133 struct nfsd_writeargs write; 134 struct nfsd_createargs create; 135 struct nfsd_renameargs rename; 136 struct nfsd_linkargs link; 137 struct nfsd_symlinkargs symlink; 138 struct nfsd_readdirargs readdir; 139 }; 140 141 #define NFS2_SVC_XDRSIZE sizeof(union nfsd_xdrstore) 142 143 144 int nfssvc_decode_fhandleargs(struct svc_rqst *, __be32 *); 145 int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *); 146 int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *); 147 int nfssvc_decode_readargs(struct svc_rqst *, __be32 *); 148 int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *); 149 int nfssvc_decode_createargs(struct svc_rqst *, __be32 *); 150 int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *); 151 int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *); 152 int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *); 153 int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *); 154 int nfssvc_encode_statres(struct svc_rqst *, __be32 *); 155 int nfssvc_encode_attrstatres(struct svc_rqst *, __be32 *); 156 int nfssvc_encode_diropres(struct svc_rqst *, __be32 *); 157 int nfssvc_encode_readlinkres(struct svc_rqst *, __be32 *); 158 int nfssvc_encode_readres(struct svc_rqst *, __be32 *); 159 int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *); 160 int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *); 161 162 void nfssvc_encode_nfscookie(struct nfsd_readdirres *resp, u32 offset); 163 int nfssvc_encode_entry(void *data, const char *name, int namlen, 164 loff_t offset, u64 ino, unsigned int d_type); 165 166 void nfssvc_release_attrstat(struct svc_rqst *rqstp); 167 void nfssvc_release_diropres(struct svc_rqst *rqstp); 168 void nfssvc_release_readres(struct svc_rqst *rqstp); 169 170 /* Helper functions for NFSv2 ACL code */ 171 bool svcxdr_decode_fhandle(struct xdr_stream *xdr, struct svc_fh *fhp); 172 bool svcxdr_encode_stat(struct xdr_stream *xdr, __be32 status); 173 bool svcxdr_encode_fattr(struct svc_rqst *rqstp, struct xdr_stream *xdr, 174 const struct svc_fh *fhp, const struct kstat *stat); 175 176 #endif /* LINUX_NFSD_H */ 177