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 int vlen; 31 }; 32 33 struct nfsd_writeargs { 34 svc_fh fh; 35 __u32 offset; 36 int len; 37 struct kvec first; 38 }; 39 40 struct nfsd_createargs { 41 struct svc_fh fh; 42 char * name; 43 unsigned int len; 44 struct iattr attrs; 45 }; 46 47 struct nfsd_renameargs { 48 struct svc_fh ffh; 49 char * fname; 50 unsigned int flen; 51 struct svc_fh tfh; 52 char * tname; 53 unsigned int tlen; 54 }; 55 56 struct nfsd_readlinkargs { 57 struct svc_fh fh; 58 char * buffer; 59 }; 60 61 struct nfsd_linkargs { 62 struct svc_fh ffh; 63 struct svc_fh tfh; 64 char * tname; 65 unsigned int tlen; 66 }; 67 68 struct nfsd_symlinkargs { 69 struct svc_fh ffh; 70 char * fname; 71 unsigned int flen; 72 char * tname; 73 unsigned int tlen; 74 struct iattr attrs; 75 struct kvec first; 76 }; 77 78 struct nfsd_readdirargs { 79 struct svc_fh fh; 80 __u32 cookie; 81 __u32 count; 82 __be32 * buffer; 83 }; 84 85 struct nfsd_attrstat { 86 struct svc_fh fh; 87 struct kstat stat; 88 }; 89 90 struct nfsd_diropres { 91 struct svc_fh fh; 92 struct kstat stat; 93 }; 94 95 struct nfsd_readlinkres { 96 int len; 97 }; 98 99 struct nfsd_readres { 100 struct svc_fh fh; 101 unsigned long count; 102 struct kstat stat; 103 }; 104 105 struct nfsd_readdirres { 106 int count; 107 108 struct readdir_cd common; 109 __be32 * buffer; 110 int buflen; 111 __be32 * offset; 112 }; 113 114 struct nfsd_statfsres { 115 struct kstatfs stats; 116 }; 117 118 /* 119 * Storage requirements for XDR arguments and results. 120 */ 121 union nfsd_xdrstore { 122 struct nfsd_sattrargs sattr; 123 struct nfsd_diropargs dirop; 124 struct nfsd_readargs read; 125 struct nfsd_writeargs write; 126 struct nfsd_createargs create; 127 struct nfsd_renameargs rename; 128 struct nfsd_linkargs link; 129 struct nfsd_symlinkargs symlink; 130 struct nfsd_readdirargs readdir; 131 }; 132 133 #define NFS2_SVC_XDRSIZE sizeof(union nfsd_xdrstore) 134 135 136 int nfssvc_decode_void(struct svc_rqst *, __be32 *); 137 int nfssvc_decode_fhandle(struct svc_rqst *, __be32 *); 138 int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *); 139 int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *); 140 int nfssvc_decode_readargs(struct svc_rqst *, __be32 *); 141 int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *); 142 int nfssvc_decode_createargs(struct svc_rqst *, __be32 *); 143 int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *); 144 int nfssvc_decode_readlinkargs(struct svc_rqst *, __be32 *); 145 int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *); 146 int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *); 147 int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *); 148 int nfssvc_encode_void(struct svc_rqst *, __be32 *); 149 int nfssvc_encode_attrstat(struct svc_rqst *, __be32 *); 150 int nfssvc_encode_diropres(struct svc_rqst *, __be32 *); 151 int nfssvc_encode_readlinkres(struct svc_rqst *, __be32 *); 152 int nfssvc_encode_readres(struct svc_rqst *, __be32 *); 153 int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *); 154 int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *); 155 156 int nfssvc_encode_entry(void *, const char *name, 157 int namlen, loff_t offset, u64 ino, unsigned int); 158 159 void nfssvc_release_fhandle(struct svc_rqst *); 160 161 /* Helper functions for NFSv2 ACL code */ 162 __be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, struct kstat *stat); 163 __be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp); 164 165 #endif /* LINUX_NFSD_H */ 166