1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * include/linux/nfsd/export.h 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Public declarations for NFS exports. The definitions for the 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * syscall interface are in nfsctl.h 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef NFSD_EXPORT_H 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSD_EXPORT_H 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/types.h> 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru# include <linux/types.h> 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru# include <linux/in.h> 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Important limits for the exports stuff. 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSCLNT_IDMAX 1024 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSCLNT_ADDRMAX 16 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSCLNT_KEYMAX 32 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Export flags. 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_READONLY 0x0001 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_INSECURE_PORT 0x0002 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_ROOTSQUASH 0x0004 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_ALLSQUASH 0x0008 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_ASYNC 0x0010 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_GATHERED_WRITES 0x0020 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 40 80 100 currently unused */ 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_NOHIDE 0x0200 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_NOSUBTREECHECK 0x0400 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */ 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect */ 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_FSID 0x2000 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_CROSSMOUNT 0x4000 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */ 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NFSEXP_ALLFLAGS 0xFE3F 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct svc_export { 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct cache_head h; 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct auth_domain * ex_client; 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int ex_flags; 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct vfsmount * ex_mnt; 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct dentry * ex_dentry; 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru uid_t ex_anon_uid; 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru gid_t ex_anon_gid; 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int ex_fsid; 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* an "export key" (expkey) maps a filehandlefragement to an 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * svc_export for a given client. There can be two per export, one 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * for type 0 (dev/ino), one for type 1 (fsid) 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct svc_expkey { 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct cache_head h; 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct auth_domain * ek_client; 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int ek_fsidtype; 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru u32 ek_fsid[3]; 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct vfsmount * ek_mnt; 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct dentry * ek_dentry; 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT)) 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC)) 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define EX_RDONLY(exp) ((exp)->ex_flags & NFSEXP_READONLY) 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE) 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES) 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Function declarations 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid nfsd_export_init(void); 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid nfsd_export_shutdown(void); 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid nfsd_export_flush(void); 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid exp_readlock(void); 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid exp_readunlock(void); 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct svc_export * exp_get_by_name(struct auth_domain *clp, 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct vfsmount *mnt, 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct dentry *dentry, 92c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct cache_req *reqp); 93c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct svc_export * exp_parent(struct auth_domain *clp, 94c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct vfsmount *mnt, 95c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct dentry *dentry, 96c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct cache_req *reqp); 97c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint exp_rootfh(struct auth_domain *, 98c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru char *path, struct knfsd_fh *, int maxsize); 99c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint exp_pseudoroot(struct auth_domain *, struct svc_fh *fhp, struct cache_req *creq); 100c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint nfserrno(int errno); 101c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 102c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern struct cache_detail svc_export_cache; 103c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 104c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void exp_put(struct svc_export *exp) 105c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 106c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru cache_put(&exp->h, &svc_export_cache); 107c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 108c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 109c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void exp_get(struct svc_export *exp) 110c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 111c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru cache_get(&exp->h); 112c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 113c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern struct svc_export * 114c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruexp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv, 115c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct cache_req *reqp); 116c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 117c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __KERNEL__ */ 118c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 119c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* NFSD_EXPORT_H */ 120c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 121