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 int vlen; 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 }; 76 77 struct nfsd_readdirargs { 78 struct svc_fh fh; 79 __u32 cookie; 80 __u32 count; 81 __be32 * buffer; 82 }; 83 84 struct nfsd_attrstat { 85 struct svc_fh fh; 86 struct kstat stat; 87 }; 88 89 struct nfsd_diropres { 90 struct svc_fh fh; 91 struct kstat stat; 92 }; 93 94 struct nfsd_readlinkres { 95 int len; 96 }; 97 98 struct nfsd_readres { 99 struct svc_fh fh; 100 unsigned long count; 101 struct kstat stat; 102 }; 103 104 struct nfsd_readdirres { 105 int count; 106 107 struct readdir_cd common; 108 __be32 * buffer; 109 int buflen; 110 __be32 * offset; 111 }; 112 113 struct nfsd_statfsres { 114 struct kstatfs stats; 115 }; 116 117 /* 118 * Storage requirements for XDR arguments and results. 119 */ 120 union nfsd_xdrstore { 121 struct nfsd_sattrargs sattr; 122 struct nfsd_diropargs dirop; 123 struct nfsd_readargs read; 124 struct nfsd_writeargs write; 125 struct nfsd_createargs create; 126 struct nfsd_renameargs rename; 127 struct nfsd_linkargs link; 128 struct nfsd_symlinkargs symlink; 129 struct nfsd_readdirargs readdir; 130 }; 131 132 #define NFS2_SVC_XDRSIZE sizeof(union nfsd_xdrstore) 133 134 135 int nfssvc_decode_void(struct svc_rqst *, __be32 *); 136 int nfssvc_decode_fhandle(struct svc_rqst *, __be32 *); 137 int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *); 138 int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *); 139 int nfssvc_decode_readargs(struct svc_rqst *, __be32 *); 140 int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *); 141 int nfssvc_decode_createargs(struct svc_rqst *, __be32 *); 142 int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *); 143 int nfssvc_decode_readlinkargs(struct svc_rqst *, __be32 *); 144 int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *); 145 int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *); 146 int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *); 147 int nfssvc_encode_void(struct svc_rqst *, __be32 *); 148 int nfssvc_encode_attrstat(struct svc_rqst *, __be32 *); 149 int nfssvc_encode_diropres(struct svc_rqst *, __be32 *); 150 int nfssvc_encode_readlinkres(struct svc_rqst *, __be32 *); 151 int nfssvc_encode_readres(struct svc_rqst *, __be32 *); 152 int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *); 153 int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *); 154 155 int nfssvc_encode_entry(void *, const char *name, 156 int namlen, loff_t offset, u64 ino, unsigned int); 157 158 void nfssvc_release_fhandle(struct svc_rqst *); 159 160 /* Helper functions for NFSv2 ACL code */ 161 __be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, struct kstat *stat); 162 __be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp); 163 164 #endif /* LINUX_NFSD_H */ 165