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/* * include/linux/nfsd/syscall.h * * This file holds all declarations for the knfsd syscall interface. * * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> */ #ifndef NFSD_SYSCALL_H #define NFSD_SYSCALL_H #include <asm/types.h> #ifdef __KERNEL__ # include <linux/config.h> # include <linux/types.h> # include <linux/in.h> #endif #include <linux/posix_types.h> #include <linux/nfsd/const.h> #include <linux/nfsd/export.h> #include <linux/nfsd/nfsfh.h> #include <linux/nfsd/auth.h> /* * Version of the syscall interface */ #define NFSCTL_VERSION 0x0201 /* * These are the commands understood by nfsctl(). */ #define NFSCTL_SVC 0 /* This is a server process. */ #define NFSCTL_ADDCLIENT 1 /* Add an NFS client. */ #define NFSCTL_DELCLIENT 2 /* Remove an NFS client. */ #define NFSCTL_EXPORT 3 /* export a file system. */ #define NFSCTL_UNEXPORT 4 /* unexport a file system. */ /*#define NFSCTL_UGIDUPDATE 5 / * update a client's uid/gid map. DISCARDED */ /*#define NFSCTL_GETFH 6 / * get an fh by ino DISCARDED */ #define NFSCTL_GETFD 7 /* get an fh by path (used by mountd) */ #define NFSCTL_GETFS 8 /* get an fh by path with max FH len */ /* * Macros used to set version */ #define NFSCTL_VERSET(_cltbits, _v) ((_cltbits) |= (1 << (_v))) #define NFSCTL_VERUNSET(_cltbits, _v) ((_cltbits) &= ~(1 << (_v))) #define NFSCTL_VERISSET(_cltbits, _v) ((_cltbits) & (1 << (_v))) #if defined(CONFIG_NFSD_V4) #define NFSCTL_VERALL (0x1c /* 0b011100 */) #elif defined(CONFIG_NFSD_V3) #define NFSCTL_VERALL (0x0c /* 0b001100 */) #else #define NFSCTL_VERALL (0x04 /* 0b000100 */) #endif /* SVC */ struct nfsctl_svc { unsigned short svc_port; int svc_nthreads; }; /* ADDCLIENT/DELCLIENT */ struct nfsctl_client { char cl_ident[NFSCLNT_IDMAX+1]; int cl_naddr; struct in_addr cl_addrlist[NFSCLNT_ADDRMAX]; int cl_fhkeytype; int cl_fhkeylen; unsigned char cl_fhkey[NFSCLNT_KEYMAX]; }; /* EXPORT/UNEXPORT */ struct nfsctl_export { char ex_client[NFSCLNT_IDMAX+1]; char ex_path[NFS_MAXPATHLEN+1]; __kernel_old_dev_t ex_dev; __kernel_ino_t ex_ino; int ex_flags; __kernel_uid_t ex_anon_uid; __kernel_gid_t ex_anon_gid; }; /* GETFD */ struct nfsctl_fdparm { struct sockaddr gd_addr; char gd_path[NFS_MAXPATHLEN+1]; int gd_version; }; /* GETFS - GET Filehandle with Size */ struct nfsctl_fsparm { struct sockaddr gd_addr; char gd_path[NFS_MAXPATHLEN+1]; int gd_maxlen; }; /* * This is the argument union. */ struct nfsctl_arg { int ca_version; /* safeguard */ union { struct nfsctl_svc u_svc; struct nfsctl_client u_client; struct nfsctl_export u_export; struct nfsctl_fdparm u_getfd; struct nfsctl_fsparm u_getfs; /* * The following dummy member is needed to preserve binary compatibility * on platforms where alignof(void*)>alignof(int). It's needed because * this union used to contain a member (u_umap) which contained a * pointer. */ void *u_ptr; } u; #define ca_svc u.u_svc #define ca_client u.u_client #define ca_export u.u_export #define ca_getfd u.u_getfd #define ca_getfs u.u_getfs }; union nfsctl_res { __u8 cr_getfh[NFS_FHSIZE]; struct knfsd_fh cr_getfs; }; #ifdef __KERNEL__ /* * Kernel syscall implementation. */ extern int exp_addclient(struct nfsctl_client *ncp); extern int exp_delclient(struct nfsctl_client *ncp); extern int exp_export(struct nfsctl_export *nxp); extern int exp_unexport(struct nfsctl_export *nxp); extern unsigned int nfsd_versbits; #endif /* __KERNEL__ */ #endif /* NFSD_SYSCALL_H */