http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/nfsd/export.h

/* * include/linux/nfsd/export.h * * Public declarations for NFS exports. The definitions for the * syscall interface are in nfsctl.h * * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> */ #ifndef NFSD_EXPORT_H #define NFSD_EXPORT_H #include <asm/types.h> #ifdef __KERNEL__ # include <linux/types.h> # include <linux/in.h> #endif /* * Important limits for the exports stuff. */ #define NFSCLNT_IDMAX 1024 #define NFSCLNT_ADDRMAX 16 #define NFSCLNT_KEYMAX 32 /* * Export flags. */ #define NFSEXP_READONLY 0x0001 #define NFSEXP_INSECURE_PORT 0x0002 #define NFSEXP_ROOTSQUASH 0x0004 #define NFSEXP_ALLSQUASH 0x0008 #define NFSEXP_ASYNC 0x0010 #define NFSEXP_GATHERED_WRITES 0x0020 /* 40 80 100 currently unused */ #define NFSEXP_NOHIDE 0x0200 #define NFSEXP_NOSUBTREECHECK 0x0400 #define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */ #define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect */ #define NFSEXP_FSID 0x2000 #define NFSEXP_CROSSMOUNT 0x4000 #define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */ #define NFSEXP_ALLFLAGS 0xFE3F #ifdef __KERNEL__ struct svc_export { struct cache_head h; struct auth_domain * ex_client; int ex_flags; struct vfsmount * ex_mnt; struct dentry * ex_dentry; uid_t ex_anon_uid; gid_t ex_anon_gid; int ex_fsid; }; /* an "export key" (expkey) maps a filehandlefragement to an * svc_export for a given client. There can be two per export, one * for type 0 (dev/ino), one for type 1 (fsid) */ struct svc_expkey { struct cache_head h; struct auth_domain * ek_client; int ek_fsidtype; u32 ek_fsid[3]; struct svc_export * ek_export; }; #define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT)) #define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC)) #define EX_RDONLY(exp) ((exp)->ex_flags & NFSEXP_READONLY) #define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE) #define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES) /* * Function declarations */ void nfsd_export_init(void); void nfsd_export_shutdown(void); void nfsd_export_flush(void); void exp_readlock(void); void exp_readunlock(void); struct svc_expkey * exp_find_key(struct auth_domain *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp); struct svc_export * exp_get_by_name(struct auth_domain *clp, struct vfsmount *mnt, struct dentry *dentry, struct cache_req *reqp); struct svc_export * exp_parent(struct auth_domain *clp, struct vfsmount *mnt, struct dentry *dentry, struct cache_req *reqp); int exp_rootfh(struct auth_domain *, char *path, struct knfsd_fh *, int maxsize); int exp_pseudoroot(struct auth_domain *, struct svc_fh *fhp, struct cache_req *creq); int nfserrno(int errno); extern void expkey_put(struct cache_head *item, struct cache_detail *cd); extern void svc_export_put(struct cache_head *item, struct cache_detail *cd); extern struct cache_detail svc_export_cache, svc_expkey_cache; static inline void exp_put(struct svc_export *exp) { svc_export_put(&exp->h, &svc_export_cache); } static inline void exp_get(struct svc_export *exp) { cache_get(&exp->h); } static inline struct svc_export * exp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp) { struct svc_expkey *ek = exp_find_key(clp, fsid_type, fsidv, reqp); if (ek && !IS_ERR(ek)) { struct svc_export *exp = ek->ek_export; int err; exp_get(exp); expkey_put(&ek->h, &svc_expkey_cache); if ((err = cache_check(&svc_export_cache, &exp->h, reqp))) exp = ERR_PTR(err); return exp; } else return ERR_PTR(PTR_ERR(ek)); } #endif /* __KERNEL__ */ #endif /* NFSD_EXPORT_H */