/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Rick Macklem at The University of Guelph. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include /* * These functions support the macros and help fiddle mbuf chains for * the nfs op functions. They do things like create the rpc header and * copy data between mbuf chains and uio lists. */ #include extern u_int32_t newnfs_true, newnfs_false; extern int nfs_pubfhset; extern int nfsrv_clienthashsize; extern int nfsrv_lockhashsize; extern int nfsrv_sessionhashsize; extern int nfsrv_useacl; extern uid_t nfsrv_defaultuid; extern gid_t nfsrv_defaultgid; NFSD_VNET_DECLARE(struct nfsclienthashhead *, nfsclienthash); NFSD_VNET_DECLARE(struct nfslockhashhead *, nfslockhash); NFSD_VNET_DECLARE(struct nfssessionhash *, nfssessionhash); NFSD_VNET_DECLARE(int, nfs_rootfhset); NFSD_VNET_DECLARE(uid_t, nfsrv_defaultuid); NFSD_VNET_DECLARE(gid_t, nfsrv_defaultgid); char nfs_v2pubfh[NFSX_V2FH]; struct nfsdontlisthead nfsrv_dontlisthead; struct nfslayouthead nfsrv_recalllisthead; static nfstype newnfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, NFCHR, NFNON }; extern nfstype nfsv34_type[9]; static u_int32_t nfsrv_isannfserr(u_int32_t); SYSCTL_DECL(_vfs_nfsd); static int enable_checkutf8 = 1; SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_checkutf8, CTLFLAG_RW, &enable_checkutf8, 0, "Enable the NFSv4 check for the UTF8 compliant name required by rfc3530"); static int enable_nobodycheck = 1; SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_nobodycheck, CTLFLAG_RW, &enable_nobodycheck, 0, "Enable the NFSv4 check when setting user nobody as owner"); static int enable_nogroupcheck = 1; SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_nogroupcheck, CTLFLAG_RW, &enable_nogroupcheck, 0, "Enable the NFSv4 check when setting group nogroup as owner"); static char nfsrv_hexdigit(char, int *); /* * Maps errno values to nfs error numbers. * Use NFSERR_IO as the catch all for ones not specifically defined in * RFC 1094. (It now includes the errors added for NFSv3.) */ static u_char nfsrv_v2errmap[NFSERR_REMOTE] = { NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_EXIST, NFSERR_XDEV, NFSERR_NODEV, NFSERR_NOTDIR, NFSERR_ISDIR, NFSERR_INVAL, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, NFSERR_MLINK, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, NFSERR_REMOTE, }; /* * Maps errno values to nfs error numbers. * Although it is not obvious whether or not NFS clients really care if * a returned error value is in the specified list for the procedure, the * safest thing to do is filter them appropriately. For Version 2, the * X/Open XNFS document is the only specification that defines error values * for each RPC (The RFC simply lists all possible error values for all RPCs), * so I have decided to not do this for Version 2. * The first entry is the default error return and the rest are the valid * errors for that RPC in increasing numeric order. */ static short nfsv3err_null[] = { 0, 0, }; static short nfsv3err_getattr[] = { NFSERR_IO, NFSERR_IO, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_setattr[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_PERM, NFSERR_IO, NFSERR_INVAL, NFSERR_NOSPC, NFSERR_ROFS, NFSERR_DQUOT, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOT_SYNC, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_lookup[] = { NFSERR_IO, NFSERR_NOENT, NFSERR_ACCES, NFSERR_NAMETOL, NFSERR_IO, NFSERR_NOTDIR, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_access[] = { NFSERR_IO, NFSERR_IO, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_readlink[] = { NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_INVAL, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOTSUPP, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_read[] = { NFSERR_IO, NFSERR_IO, NFSERR_NXIO, NFSERR_ACCES, NFSERR_INVAL, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_write[] = { NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_NOSPC, NFSERR_INVAL, NFSERR_FBIG, NFSERR_ROFS, NFSERR_DQUOT, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_create[] = { NFSERR_IO, NFSERR_EXIST, NFSERR_NAMETOL, NFSERR_ACCES, NFSERR_IO, NFSERR_NOTDIR, NFSERR_NOSPC, NFSERR_ROFS, NFSERR_DQUOT, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOTSUPP, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_mkdir[] = { NFSERR_IO, NFSERR_EXIST, NFSERR_ACCES, NFSERR_NAMETOL, NFSERR_IO, NFSERR_NOTDIR, NFSERR_NOSPC, NFSERR_ROFS, NFSERR_DQUOT, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOTSUPP, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_symlink[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_EXIST, NFSERR_NAMETOL, NFSERR_NOSPC, NFSERR_IO, NFSERR_NOTDIR, NFSERR_ROFS, NFSERR_DQUOT, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOTSUPP, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_mknod[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_EXIST, NFSERR_NAMETOL, NFSERR_NOSPC, NFSERR_IO, NFSERR_NOTDIR, NFSERR_ROFS, NFSERR_DQUOT, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOTSUPP, NFSERR_SERVERFAULT, NFSERR_DELAY, NFSERR_BADTYPE, 0, }; static short nfsv3err_remove[] = { NFSERR_IO, NFSERR_NOENT, NFSERR_ACCES, NFSERR_NAMETOL, NFSERR_IO, NFSERR_NOTDIR, NFSERR_ROFS, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_rmdir[] = { NFSERR_IO, NFSERR_NOENT, NFSERR_ACCES, NFSERR_NOTDIR, NFSERR_NAMETOL, NFSERR_IO, NFSERR_EXIST, NFSERR_INVAL, NFSERR_ROFS, NFSERR_NOTEMPTY, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOTSUPP, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_rename[] = { NFSERR_IO, NFSERR_NOENT, NFSERR_ACCES, NFSERR_EXIST, NFSERR_NAMETOL, NFSERR_XDEV, NFSERR_IO, NFSERR_NOTDIR, NFSERR_ISDIR, NFSERR_INVAL, NFSERR_NOSPC, NFSERR_ROFS, NFSERR_MLINK, NFSERR_NOTEMPTY, NFSERR_DQUOT, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOTSUPP, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_link[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_EXIST, NFSERR_NAMETOL, NFSERR_IO, NFSERR_XDEV, NFSERR_NOTDIR, NFSERR_INVAL, NFSERR_NOSPC, NFSERR_ROFS, NFSERR_MLINK, NFSERR_DQUOT, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_NOTSUPP, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_readdir[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_NOTDIR, NFSERR_IO, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_BAD_COOKIE, NFSERR_TOOSMALL, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_readdirplus[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_NOTDIR, NFSERR_IO, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_BAD_COOKIE, NFSERR_NOTSUPP, NFSERR_TOOSMALL, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_fsstat[] = { NFSERR_IO, NFSERR_IO, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_fsinfo[] = { NFSERR_STALE, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_pathconf[] = { NFSERR_STALE, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short nfsv3err_commit[] = { NFSERR_IO, NFSERR_IO, NFSERR_STALE, NFSERR_BADHANDLE, NFSERR_SERVERFAULT, NFSERR_DELAY, 0, }; static short *nfsrv_v3errmap[] = { nfsv3err_null, nfsv3err_getattr, nfsv3err_setattr, nfsv3err_lookup, nfsv3err_access, nfsv3err_readlink, nfsv3err_read, nfsv3err_write, nfsv3err_create, nfsv3err_mkdir, nfsv3err_symlink, nfsv3err_mknod, nfsv3err_remove, nfsv3err_rmdir, nfsv3err_rename, nfsv3err_link, nfsv3err_readdir, nfsv3err_readdirplus, nfsv3err_fsstat, nfsv3err_fsinfo, nfsv3err_pathconf, nfsv3err_commit, }; /* * And the same for V4. */ static short nfsv4err_null[] = { 0, 0, }; static short nfsv4err_access[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADHANDLE, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_IO, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_close[] = { NFSERR_EXPIRED, NFSERR_ADMINREVOKED, NFSERR_BADHANDLE, NFSERR_BADSEQID, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_EXPIRED, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_ISDIR, NFSERR_LEASEMOVED, NFSERR_LOCKSHELD, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_OLDSTATEID, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALESTATEID, 0, }; static short nfsv4err_commit[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADHANDLE, NFSERR_BADXDR, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_IO, NFSERR_ISDIR, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_create[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_ATTRNOTSUPP, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADNAME, NFSERR_BADOWNER, NFSERR_BADTYPE, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_DQUOT, NFSERR_EXIST, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_IO, NFSERR_MOVED, NFSERR_NAMETOL, NFSERR_NOFILEHANDLE, NFSERR_NOSPC, NFSERR_NOTDIR, NFSERR_PERM, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_delegpurge[] = { NFSERR_SERVERFAULT, NFSERR_BADXDR, NFSERR_NOTSUPP, NFSERR_LEASEMOVED, NFSERR_MOVED, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALECLIENTID, 0, }; static short nfsv4err_delegreturn[] = { NFSERR_SERVERFAULT, NFSERR_ADMINREVOKED, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_EXPIRED, NFSERR_INVAL, NFSERR_LEASEMOVED, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_NOTSUPP, NFSERR_OLDSTATEID, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALESTATEID, 0, }; static short nfsv4err_getattr[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADHANDLE, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_IO, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_getfh[] = { NFSERR_BADHANDLE, NFSERR_BADHANDLE, NFSERR_FHEXPIRED, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_link[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADNAME, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_DQUOT, NFSERR_EXIST, NFSERR_FHEXPIRED, NFSERR_FILEOPEN, NFSERR_INVAL, NFSERR_IO, NFSERR_ISDIR, NFSERR_MLINK, NFSERR_MOVED, NFSERR_NAMETOL, NFSERR_NOENT, NFSERR_NOFILEHANDLE, NFSERR_NOSPC, NFSERR_NOTDIR, NFSERR_NOTSUPP, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_WRONGSEC, NFSERR_XDEV, 0, }; static short nfsv4err_lock[] = { NFSERR_SERVERFAULT, NFSERR_ACCES, NFSERR_ADMINREVOKED, NFSERR_BADHANDLE, NFSERR_BADRANGE, NFSERR_BADSEQID, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_DEADLOCK, NFSERR_DELAY, NFSERR_DENIED, NFSERR_EXPIRED, NFSERR_FHEXPIRED, NFSERR_GRACE, NFSERR_INVAL, NFSERR_ISDIR, NFSERR_LEASEMOVED, NFSERR_LOCKNOTSUPP, NFSERR_LOCKRANGE, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_NOGRACE, NFSERR_OLDSTATEID, NFSERR_OPENMODE, NFSERR_RECLAIMBAD, NFSERR_RECLAIMCONFLICT, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALECLIENTID, NFSERR_STALESTATEID, 0, }; static short nfsv4err_lockt[] = { NFSERR_SERVERFAULT, NFSERR_ACCES, NFSERR_BADHANDLE, NFSERR_BADRANGE, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_DENIED, NFSERR_FHEXPIRED, NFSERR_GRACE, NFSERR_INVAL, NFSERR_ISDIR, NFSERR_LEASEMOVED, NFSERR_LOCKRANGE, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALECLIENTID, 0, }; static short nfsv4err_locku[] = { NFSERR_SERVERFAULT, NFSERR_ACCES, NFSERR_ADMINREVOKED, NFSERR_BADHANDLE, NFSERR_BADRANGE, NFSERR_BADSEQID, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_EXPIRED, NFSERR_FHEXPIRED, NFSERR_GRACE, NFSERR_INVAL, NFSERR_ISDIR, NFSERR_LEASEMOVED, NFSERR_LOCKRANGE, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_OLDSTATEID, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALESTATEID, 0, }; static short nfsv4err_lookup[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADNAME, NFSERR_BADXDR, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_IO, NFSERR_MOVED, NFSERR_NAMETOL, NFSERR_NOENT, NFSERR_NOFILEHANDLE, NFSERR_NOTDIR, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_SYMLINK, NFSERR_WRONGSEC, 0, }; static short nfsv4err_lookupp[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADHANDLE, NFSERR_FHEXPIRED, NFSERR_IO, NFSERR_MOVED, NFSERR_NOENT, NFSERR_NOFILEHANDLE, NFSERR_NOTDIR, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_nverify[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_ATTRNOTSUPP, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_IO, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_RESOURCE, NFSERR_SAME, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_open[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_ADMINREVOKED, NFSERR_ATTRNOTSUPP, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADNAME, NFSERR_BADOWNER, NFSERR_BADSEQID, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_DQUOT, NFSERR_EXIST, NFSERR_EXPIRED, NFSERR_FHEXPIRED, NFSERR_GRACE, NFSERR_IO, NFSERR_INVAL, NFSERR_ISDIR, NFSERR_LEASEMOVED, NFSERR_MOVED, NFSERR_NAMETOL, NFSERR_NOENT, NFSERR_NOFILEHANDLE, NFSERR_NOGRACE, NFSERR_NOSPC, NFSERR_NOTDIR, NFSERR_NOTSUPP, NFSERR_PERM, NFSERR_RECLAIMBAD, NFSERR_RECLAIMCONFLICT, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_SHAREDENIED, NFSERR_STALE, NFSERR_STALECLIENTID, NFSERR_SYMLINK, NFSERR_WRONGSEC, 0, }; static short nfsv4err_openattr[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADHANDLE, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_DQUOT, NFSERR_FHEXPIRED, NFSERR_IO, NFSERR_MOVED, NFSERR_NOENT, NFSERR_NOFILEHANDLE, NFSERR_NOSPC, NFSERR_NOTSUPP, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_openconfirm[] = { NFSERR_SERVERFAULT, NFSERR_ADMINREVOKED, NFSERR_BADHANDLE, NFSERR_BADSEQID, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_EXPIRED, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_ISDIR, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_OLDSTATEID, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALESTATEID, 0, }; static short nfsv4err_opendowngrade[] = { NFSERR_SERVERFAULT, NFSERR_ADMINREVOKED, NFSERR_BADHANDLE, NFSERR_BADSEQID, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_EXPIRED, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_OLDSTATEID, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALESTATEID, 0, }; static short nfsv4err_putfh[] = { NFSERR_SERVERFAULT, NFSERR_BADHANDLE, NFSERR_BADXDR, NFSERR_FHEXPIRED, NFSERR_MOVED, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_WRONGSEC, 0, }; static short nfsv4err_putpubfh[] = { NFSERR_SERVERFAULT, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_WRONGSEC, 0, }; static short nfsv4err_putrootfh[] = { NFSERR_SERVERFAULT, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_WRONGSEC, 0, }; static short nfsv4err_read[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_ADMINREVOKED, NFSERR_BADHANDLE, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_EXPIRED, NFSERR_FHEXPIRED, NFSERR_GRACE, NFSERR_IO, NFSERR_INVAL, NFSERR_ISDIR, NFSERR_LEASEMOVED, NFSERR_LOCKED, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_NXIO, NFSERR_OLDSTATEID, NFSERR_OPENMODE, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALESTATEID, 0, }; static short nfsv4err_readdir[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADHANDLE, NFSERR_BAD_COOKIE, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_IO, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_NOTDIR, NFSERR_NOTSAME, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_TOOSMALL, 0, }; static short nfsv4err_readlink[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADHANDLE, NFSERR_DELAY, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_IO, NFSERR_ISDIR, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_NOTSUPP, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_remove[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADNAME, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_FHEXPIRED, NFSERR_FILEOPEN, NFSERR_INVAL, NFSERR_IO, NFSERR_MOVED, NFSERR_NAMETOL, NFSERR_NOENT, NFSERR_NOFILEHANDLE, NFSERR_NOTDIR, NFSERR_NOTEMPTY, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_rename[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADNAME, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_DQUOT, NFSERR_EXIST, NFSERR_FHEXPIRED, NFSERR_FILEOPEN, NFSERR_INVAL, NFSERR_IO, NFSERR_MOVED, NFSERR_NAMETOL, NFSERR_NOENT, NFSERR_NOFILEHANDLE, NFSERR_NOSPC, NFSERR_NOTDIR, NFSERR_NOTEMPTY, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_WRONGSEC, NFSERR_XDEV, 0, }; static short nfsv4err_renew[] = { NFSERR_SERVERFAULT, NFSERR_ACCES, NFSERR_ADMINREVOKED, NFSERR_BADXDR, NFSERR_CBPATHDOWN, NFSERR_EXPIRED, NFSERR_LEASEMOVED, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALECLIENTID, 0, }; static short nfsv4err_restorefh[] = { NFSERR_SERVERFAULT, NFSERR_BADHANDLE, NFSERR_FHEXPIRED, NFSERR_MOVED, NFSERR_RESOURCE, NFSERR_RESTOREFH, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_WRONGSEC, 0, }; static short nfsv4err_savefh[] = { NFSERR_SERVERFAULT, NFSERR_BADHANDLE, NFSERR_FHEXPIRED, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_secinfo[] = { NFSERR_SERVERFAULT, NFSERR_ACCES, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADNAME, NFSERR_BADXDR, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_MOVED, NFSERR_NAMETOL, NFSERR_NOENT, NFSERR_NOFILEHANDLE, NFSERR_NOTDIR, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_setattr[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_ADMINREVOKED, NFSERR_ATTRNOTSUPP, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADOWNER, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_DQUOT, NFSERR_EXPIRED, NFSERR_FBIG, NFSERR_FHEXPIRED, NFSERR_GRACE, NFSERR_INVAL, NFSERR_IO, NFSERR_ISDIR, NFSERR_LOCKED, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_NOSPC, NFSERR_OLDSTATEID, NFSERR_OPENMODE, NFSERR_PERM, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALESTATEID, 0, }; static short nfsv4err_setclientid[] = { NFSERR_SERVERFAULT, NFSERR_BADXDR, NFSERR_CLIDINUSE, NFSERR_INVAL, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_WRONGSEC, 0, }; static short nfsv4err_setclientidconfirm[] = { NFSERR_SERVERFAULT, NFSERR_BADXDR, NFSERR_CLIDINUSE, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALECLIENTID, 0, }; static short nfsv4err_verify[] = { NFSERR_SERVERFAULT, NFSERR_ACCES, NFSERR_ATTRNOTSUPP, NFSERR_BADCHAR, NFSERR_BADHANDLE, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_FHEXPIRED, NFSERR_INVAL, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_NOTSAME, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALE, 0, }; static short nfsv4err_write[] = { NFSERR_IO, NFSERR_ACCES, NFSERR_ADMINREVOKED, NFSERR_BADHANDLE, NFSERR_BADSTATEID, NFSERR_BADXDR, NFSERR_DELAY, NFSERR_DQUOT, NFSERR_EXPIRED, NFSERR_FBIG, NFSERR_FHEXPIRED, NFSERR_GRACE, NFSERR_INVAL, NFSERR_IO, NFSERR_ISDIR, NFSERR_LEASEMOVED, NFSERR_LOCKED, NFSERR_MOVED, NFSERR_NOFILEHANDLE, NFSERR_NOSPC, NFSERR_NXIO, NFSERR_OLDSTATEID, NFSERR_OPENMODE, NFSERR_RESOURCE, NFSERR_ROFS, NFSERR_SERVERFAULT, NFSERR_STALE, NFSERR_STALESTATEID, 0, }; static short nfsv4err_releaselockowner[] = { NFSERR_SERVERFAULT, NFSERR_ADMINREVOKED, NFSERR_BADXDR, NFSERR_EXPIRED, NFSERR_LEASEMOVED, NFSERR_LOCKSHELD, NFSERR_RESOURCE, NFSERR_SERVERFAULT, NFSERR_STALECLIENTID, 0, }; static short *nfsrv_v4errmap[] = { nfsv4err_null, nfsv4err_null, nfsv4err_null, nfsv4err_access, nfsv4err_close, nfsv4err_commit, nfsv4err_create, nfsv4err_delegpurge, nfsv4err_delegreturn, nfsv4err_getattr, nfsv4err_getfh, nfsv4err_link, nfsv4err_lock, nfsv4err_lockt, nfsv4err_locku, nfsv4err_lookup, nfsv4err_lookupp, nfsv4err_nverify, nfsv4err_open, nfsv4err_openattr, nfsv4err_openconfirm, nfsv4err_opendowngrade, nfsv4err_putfh, nfsv4err_putpubfh, nfsv4err_putrootfh, nfsv4err_read, nfsv4err_readdir, nfsv4err_readlink, nfsv4err_remove, nfsv4err_rename, nfsv4err_renew, nfsv4err_restorefh, nfsv4err_savefh, nfsv4err_secinfo, nfsv4err_setattr, nfsv4err_setclientid, nfsv4err_setclientidconfirm, nfsv4err_verify, nfsv4err_write, nfsv4err_releaselockowner, }; /* * Trim tlen bytes off the end of the mbuf list and then ensure * the end of the last mbuf is nul filled to a long boundary, * as indicated by the value of "nul". * Return the last mbuf in the updated list and free and mbufs * that follow it in the original list. * This is somewhat different than the old nfsrv_adj() with * support for ext_pgs mbufs. It frees the remaining mbufs * instead of setting them 0 length, since lists of ext_pgs * mbufs are all expected to be non-empty. */ struct mbuf * nfsrv_adj(struct mbuf *mp, int len, int nul) { struct mbuf *m, *m2; vm_page_t pg; int i, lastlen, pgno, plen, tlen, trim; uint16_t off; char *cp; /* * Find the last mbuf after adjustment and * how much it needs to be adjusted by. */ tlen = 0; m = mp; for (;;) { tlen += m->m_len; if (m->m_next == NULL) break; m = m->m_next; } /* m is now the last mbuf and tlen the total length. */ if (len >= m->m_len) { /* Need to trim away the last mbuf(s). */ i = tlen - len; m = mp; for (;;) { if (m->m_len >= i) break; i -= m->m_len; m = m->m_next; } lastlen = i; } else lastlen = m->m_len - len; /* * m is now the last mbuf after trimming and its length needs to * be lastlen. * Adjust the last mbuf and set cp to point to where nuls must be * written. */ if ((m->m_flags & M_EXTPG) != 0) { pgno = m->m_epg_npgs - 1; off = (pgno == 0) ? m->m_epg_1st_off : 0; plen = m_epg_pagelen(m, pgno, off); if (m->m_len > lastlen) { /* Trim this mbuf. */ trim = m->m_len - lastlen; while (trim >= plen) { KASSERT(pgno > 0, ("nfsrv_adj: freeing page 0")); /* Free page. */ pg = PHYS_TO_VM_PAGE(m->m_epg_pa[pgno]); vm_page_unwire_noq(pg); vm_page_free(pg); trim -= plen; m->m_epg_npgs--; pgno--; off = (pgno == 0) ? m->m_epg_1st_off : 0; plen = m_epg_pagelen(m, pgno, off); } plen -= trim; m->m_epg_last_len = plen; m->m_len = lastlen; } cp = (char *)(void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]); cp += off + plen - nul; } else { m->m_len = lastlen; cp = mtod(m, char *) + m->m_len - nul; } /* Write the nul bytes. */ for (i = 0; i < nul; i++) *cp++ = '\0'; /* Free up any mbufs past "m". */ m2 = m->m_next; m->m_next = NULL; if (m2 != NULL) m_freem(m2); return (m); } /* * Make these functions instead of macros, so that the kernel text size * doesn't get too big... */ void nfsrv_wcc(struct nfsrv_descript *nd, int before_ret, struct nfsvattr *before_nvap, int after_ret, struct nfsvattr *after_nvap) { u_int32_t *tl; if (before_ret) { NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); *tl = newnfs_false; } else { NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); *tl++ = newnfs_true; txdr_hyper(before_nvap->na_size, tl); tl += 2; txdr_nfsv3time(&(before_nvap->na_mtime), tl); tl += 2; txdr_nfsv3time(&(before_nvap->na_ctime), tl); } nfsrv_postopattr(nd, after_ret, after_nvap); } void nfsrv_postopattr(struct nfsrv_descript *nd, int after_ret, struct nfsvattr *after_nvap) { u_int32_t *tl; NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); if (after_ret) *tl = newnfs_false; else { *tl = newnfs_true; nfsrv_fillattr(nd, after_nvap); } } /* * Fill in file attributes for V2 and 3. For V4, call a separate * routine that sifts through all the attribute bits. */ void nfsrv_fillattr(struct nfsrv_descript *nd, struct nfsvattr *nvap) { struct nfs_fattr *fp; int fattr_size; /* * Build space for the attribute structure. */ if (nd->nd_flag & ND_NFSV3) fattr_size = NFSX_V3FATTR; else fattr_size = NFSX_V2FATTR; NFSM_BUILD(fp, struct nfs_fattr *, fattr_size); /* * Now just fill it all in. */ fp->fa_nlink = txdr_unsigned(nvap->na_nlink); fp->fa_uid = txdr_unsigned(nvap->na_uid); fp->fa_gid = txdr_unsigned(nvap->na_gid); if (nd->nd_flag & ND_NFSV3) { fp->fa_type = vtonfsv34_type(nvap->na_type); fp->fa_mode = vtonfsv34_mode(nvap->na_mode); txdr_hyper(nvap->na_size, (uint32_t*)&fp->fa3_size); txdr_hyper(nvap->na_bytes, (uint32_t*)&fp->fa3_used); fp->fa3_rdev.specdata1 = txdr_unsigned(NFSMAJOR(nvap->na_rdev)); fp->fa3_rdev.specdata2 = txdr_unsigned(NFSMINOR(nvap->na_rdev)); fp->fa3_fsid.nfsuquad[0] = 0; fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(nvap->na_fsid); txdr_hyper(nvap->na_fileid, (uint32_t*)&fp->fa3_fileid); txdr_nfsv3time(&nvap->na_atime, &fp->fa3_atime); txdr_nfsv3time(&nvap->na_mtime, &fp->fa3_mtime); txdr_nfsv3time(&nvap->na_ctime, &fp->fa3_ctime); } else { fp->fa_type = vtonfsv2_type(nvap->na_type); fp->fa_mode = vtonfsv2_mode(nvap->na_type, nvap->na_mode); fp->fa2_size = txdr_unsigned(nvap->na_size); fp->fa2_blocksize = txdr_unsigned(nvap->na_blocksize); if (nvap->na_type == VFIFO) fp->fa2_rdev = 0xffffffff; else fp->fa2_rdev = txdr_unsigned(nvap->na_rdev); fp->fa2_blocks = txdr_unsigned(nvap->na_bytes / NFS_FABLKSIZE); fp->fa2_fsid = txdr_unsigned(nvap->na_fsid); fp->fa2_fileid = txdr_unsigned(nvap->na_fileid); txdr_nfsv2time(&nvap->na_atime, &fp->fa2_atime); txdr_nfsv2time(&nvap->na_mtime, &fp->fa2_mtime); txdr_nfsv2time(&nvap->na_ctime, &fp->fa2_ctime); } } /* * This function gets a file handle out of an mbuf list. * It returns 0 for success, EBADRPC otherwise. * If sets the third flagp argument to 1 if the file handle is * the public file handle. * For NFSv4, if the length is incorrect, set nd_repstat == NFSERR_BADHANDLE */ int nfsrv_mtofh(struct nfsrv_descript *nd, struct nfsrvfh *fhp) { u_int32_t *tl; int error = 0, len, copylen; if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); len = fxdr_unsigned(int, *tl); if (len == 0 && nfs_pubfhset && (nd->nd_flag & ND_NFSV3) && nd->nd_procnum == NFSPROC_LOOKUP) { nd->nd_flag |= ND_PUBLOOKUP; goto nfsmout; } copylen = len; /* If len == NFSX_V4PNFSFH the RPC is a pNFS DS one. */ if (len == NFSX_V4PNFSFH && (nd->nd_flag & ND_NFSV41) != 0) { copylen = NFSX_MYFH; len = NFSM_RNDUP(len); nd->nd_flag |= ND_DSSERVER; } else if (len < NFSRV_MINFH || len > NFSRV_MAXFH) { if (nd->nd_flag & ND_NFSV4) { if (len > 0 && len <= NFSX_V4FHMAX) { error = nfsm_advance(nd, NFSM_RNDUP(len), -1); if (error) goto nfsmout; nd->nd_repstat = NFSERR_BADHANDLE; goto nfsmout; } else { error = EBADRPC; goto nfsmout; } } else { error = EBADRPC; goto nfsmout; } } } else { /* * For NFSv2, the file handle is always 32 bytes on the * wire, but this server only cares about the first * NFSRV_MAXFH bytes. */ len = NFSX_V2FH; copylen = NFSRV_MAXFH; } NFSM_DISSECT(tl, u_int32_t *, len); if ((nd->nd_flag & ND_NFSV2) && nfs_pubfhset && nd->nd_procnum == NFSPROC_LOOKUP && !NFSBCMP((caddr_t)tl, nfs_v2pubfh, NFSX_V2FH)) { nd->nd_flag |= ND_PUBLOOKUP; goto nfsmout; } NFSBCOPY(tl, (caddr_t)fhp->nfsrvfh_data, copylen); fhp->nfsrvfh_len = copylen; nfsmout: NFSEXITCODE2(error, nd); return (error); } /* * Map errnos to NFS error numbers. For Version 3 and 4 also filter out error * numbers not specified for the associated procedure. * NFSPROC_NOOP is a special case, where the high order bits of nd_repstat * should be cleared. NFSPROC_NOOP is used to return errors when a valid * RPC procedure is not involved. * Returns the error number in XDR. */ int nfsd_errmap(struct nfsrv_descript *nd) { short *defaulterrp, *errp; if (!nd->nd_repstat) return (0); if ((nd->nd_repstat & NFSERR_AUTHERR) != 0) return (txdr_unsigned(NFSERR_ACCES)); if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { if (nd->nd_procnum == NFSPROC_NOOP) return (txdr_unsigned(nd->nd_repstat & 0xffff)); if (nd->nd_flag & ND_NFSV3) errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; else if (nd->nd_repstat == EBADRPC) return (txdr_unsigned(NFSERR_BADXDR)); else if (nd->nd_repstat == NFSERR_MINORVERMISMATCH || nd->nd_repstat == NFSERR_OPILLEGAL) return (txdr_unsigned(nd->nd_repstat)); else if (nd->nd_repstat == NFSERR_REPLYFROMCACHE) return (txdr_unsigned(NFSERR_IO)); else if ((nd->nd_flag & ND_NFSV41) != 0) { if (nd->nd_repstat == EOPNOTSUPP) nd->nd_repstat = NFSERR_NOTSUPP; nd->nd_repstat = nfsrv_isannfserr(nd->nd_repstat); return (txdr_unsigned(nd->nd_repstat)); } else errp = defaulterrp = nfsrv_v4errmap[nd->nd_procnum]; while (*++errp) if (*errp == nd->nd_repstat) return (txdr_unsigned(nd->nd_repstat)); return (txdr_unsigned(*defaulterrp)); } if (nd->nd_repstat <= NFSERR_REMOTE) return (txdr_unsigned(nfsrv_v2errmap[nd->nd_repstat - 1])); return (txdr_unsigned(NFSERR_IO)); } /* * Check to see if the error is a valid NFS one. If not, replace it with * NFSERR_IO. */ static u_int32_t nfsrv_isannfserr(u_int32_t errval) { if (errval == NFSERR_OK) return (errval); if (errval >= NFSERR_BADHANDLE && errval <= NFSERR_MAXERRVAL) return (errval); if (errval > 0 && errval <= NFSERR_REMOTE) return (nfsrv_v2errmap[errval - 1]); return (NFSERR_IO); } /* * Check to see if setting a uid/gid is permitted when creating a new * file object. (Called when uid and/or gid is specified in the * settable attributes for V4. */ int nfsrv_checkuidgid(struct nfsrv_descript *nd, struct nfsvattr *nvap) { int error = 0; /* * If not setting either uid nor gid, it's OK. */ if (NFSVNO_NOTSETUID(nvap) && NFSVNO_NOTSETGID(nvap)) goto out; if ((NFSVNO_ISSETUID(nvap) && nvap->na_uid == NFSD_VNET(nfsrv_defaultuid) && enable_nobodycheck == 1) || (NFSVNO_ISSETGID(nvap) && nvap->na_gid == NFSD_VNET(nfsrv_defaultgid) && enable_nogroupcheck == 1)) { error = NFSERR_BADOWNER; goto out; } if (nd->nd_cred->cr_uid == 0) goto out; if ((NFSVNO_ISSETUID(nvap) && nvap->na_uid != nd->nd_cred->cr_uid) || (NFSVNO_ISSETGID(nvap) && nvap->na_gid != nd->nd_cred->cr_gid && !groupmember(nvap->na_gid, nd->nd_cred))) error = NFSERR_PERM; out: NFSEXITCODE2(error, nd); return (error); } /* * and this routine fixes up the settable attributes for V4 if allowed * by nfsrv_checkuidgid(). */ void nfsrv_fixattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, NFSACL_T *aclp, NFSPROC_T *p, nfsattrbit_t *attrbitp, struct nfsexstuff *exp) { int change = 0; struct nfsvattr nva; uid_t tuid; int error; nfsattrbit_t nattrbits; /* * Maybe this should be done for V2 and 3 but it never has been * and nobody seems to be upset, so I think it's best not to change * the V2 and 3 semantics. */ if ((nd->nd_flag & ND_NFSV4) == 0) goto out; NFSVNO_ATTRINIT(&nva); NFSZERO_ATTRBIT(&nattrbits); tuid = nd->nd_cred->cr_uid; if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_OWNER) && NFSVNO_ISSETUID(nvap) && nvap->na_uid != nd->nd_cred->cr_uid) { if (nd->nd_cred->cr_uid == 0) { nva.na_uid = nvap->na_uid; change++; NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_OWNER); } else { NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_OWNER); } } if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEACCESSSET) && NFSVNO_ISSETATIME(nvap)) { nva.na_atime = nvap->na_atime; change++; NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_TIMEACCESSSET); } if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEMODIFYSET) && NFSVNO_ISSETMTIME(nvap)) { nva.na_mtime = nvap->na_mtime; change++; NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_TIMEMODIFYSET); } if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_OWNERGROUP) && NFSVNO_ISSETGID(nvap)) { if (nvap->na_gid == nd->nd_cred->cr_gid || groupmember(nvap->na_gid, nd->nd_cred)) { nd->nd_cred->cr_uid = 0; nva.na_gid = nvap->na_gid; change++; NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_OWNERGROUP); } else { NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_OWNERGROUP); } } if (change) { error = nfsvno_setattr(vp, &nva, nd->nd_cred, p, exp); if (error) { NFSCLRALL_ATTRBIT(attrbitp, &nattrbits); } } if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE) && NFSVNO_ISSETSIZE(nvap) && nvap->na_size != (u_quad_t)0) { NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_SIZE); } #ifdef NFS4_ACL_EXTATTR_NAME if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_ACL) && nfsrv_useacl != 0 && aclp != NULL) { if (aclp->acl_cnt > 0) { error = nfsrv_setacl(vp, aclp, nd->nd_cred, p); if (error) { NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_ACL); } } } else #endif NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_ACL); nd->nd_cred->cr_uid = tuid; out: NFSEXITCODE2(0, nd); } /* * Translate an ASCII hex digit to it's binary value. Return -1 if the * char isn't a hex digit. */ static char nfsrv_hexdigit(char c, int *err) { *err = 0; if (c >= '0' && c <= '9') return (c - '0'); if (c >= 'a' && c <= 'f') return (c - 'a' + ((char)10)); if (c >= 'A' && c <= 'F') return (c - 'A' + ((char)10)); /* Not valid ! */ *err = 1; return (1); /* BOGUS */ } /* * Check to see if NFSERR_MOVED can be returned for this op. Return 1 iff * it can be. */ int nfsrv_errmoved(int op) { short *errp; errp = nfsrv_v4errmap[op]; while (*errp != 0) { if (*errp == NFSERR_MOVED) return (1); errp++; } return (0); } /* * Fill in attributes for a Referral. * (Return the number of bytes of XDR created.) */ int nfsrv_putreferralattr(struct nfsrv_descript *nd, nfsattrbit_t *retbitp, struct nfsreferral *refp, int getattr, int *reterrp) { u_int32_t *tl, *retnump; u_char *cp, *cp2; int prefixnum, retnum = 0, i, len, bitpos, rderrbit = 0, nonrefbit = 0; int fslocationsbit = 0; nfsattrbit_t tmpbits, refbits; NFSREFERRAL_ATTRBIT(&refbits); if (getattr) NFSCLRBIT_ATTRBIT(&refbits, NFSATTRBIT_RDATTRERROR); else if (NFSISSET_ATTRBIT(retbitp, NFSATTRBIT_RDATTRERROR)) rderrbit = 1; if (NFSISSET_ATTRBIT(retbitp, NFSATTRBIT_FSLOCATIONS)) fslocationsbit = 1; /* * Check for the case where unsupported referral attributes are * requested. */ NFSSET_ATTRBIT(&tmpbits, retbitp); NFSCLRALL_ATTRBIT(&tmpbits, &refbits); if (NFSNONZERO_ATTRBIT(&tmpbits)) nonrefbit = 1; if (nonrefbit && !fslocationsbit && (getattr || !rderrbit)) { *reterrp = NFSERR_MOVED; return (0); } /* * Now we can fill in the attributes. */ NFSSET_ATTRBIT(&tmpbits, retbitp); NFSCLRNOT_ATTRBIT(&tmpbits, &refbits); /* * Put out the attribute bitmap for the ones being filled in * and get the field for the number of attributes returned. */ prefixnum = nfsrv_putattrbit(nd, &tmpbits); NFSM_BUILD(retnump, u_int32_t *, NFSX_UNSIGNED); prefixnum += NFSX_UNSIGNED; /* * Now, loop around filling in the attributes for each bit set. */ for (bitpos = 0; bitpos < NFSATTRBIT_MAX; bitpos++) { if (NFSISSET_ATTRBIT(&tmpbits, bitpos)) { switch (bitpos) { case NFSATTRBIT_TYPE: NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); *tl = txdr_unsigned(NFDIR); retnum += NFSX_UNSIGNED; break; case NFSATTRBIT_FSID: NFSM_BUILD(tl, u_int32_t *, NFSX_V4FSID); *tl++ = 0; *tl++ = txdr_unsigned(NFSV4ROOT_FSID0); *tl++ = 0; *tl = txdr_unsigned(NFSV4ROOT_REFERRAL); retnum += NFSX_V4FSID; break; case NFSATTRBIT_RDATTRERROR: NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); if (nonrefbit) *tl = txdr_unsigned(NFSERR_MOVED); else *tl = 0; retnum += NFSX_UNSIGNED; break; case NFSATTRBIT_FSLOCATIONS: retnum += nfsm_strtom(nd, "/", 1); NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); *tl = txdr_unsigned(refp->nfr_srvcnt); retnum += NFSX_UNSIGNED; cp = refp->nfr_srvlist; for (i = 0; i < refp->nfr_srvcnt; i++) { NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); *tl = txdr_unsigned(1); retnum += NFSX_UNSIGNED; cp2 = STRCHR(cp, ':'); if (cp2 != NULL) len = cp2 - cp; else len = 1; retnum += nfsm_strtom(nd, cp, len); if (cp2 != NULL) cp = cp2 + 1; cp2 = STRCHR(cp, ','); if (cp2 != NULL) len = cp2 - cp; else len = strlen(cp); retnum += nfsm_strtom(nd, cp, len); if (cp2 != NULL) cp = cp2 + 1; } break; case NFSATTRBIT_MOUNTEDONFILEID: NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER); txdr_hyper(refp->nfr_dfileno, tl); retnum += NFSX_HYPER; break; default: printf("EEK! Bad V4 refattr bitpos=%d\n", bitpos); } } } *retnump = txdr_unsigned(retnum); return (retnum + prefixnum); } /* * Parse a file name out of a request. */ int nfsrv_parsename(struct nfsrv_descript *nd, char *bufp, u_long *hashp, NFSPATHLEN_T *outlenp) { char *fromcp, *tocp, val = '\0'; struct mbuf *md; int i; int rem, len, error = 0, pubtype = 0, outlen = 0, percent = 0; char digit; u_int32_t *tl; u_long hash = 0; if (hashp != NULL) *hashp = 0; tocp = bufp; /* * For V4, check for lookup parent. * Otherwise, get the component name. */ if ((nd->nd_flag & ND_NFSV4) && (nd->nd_procnum == NFSV4OP_LOOKUPP || nd->nd_procnum == NFSV4OP_SECINFONONAME)) { *tocp++ = '.'; hash += ((u_char)'.'); *tocp++ = '.'; hash += ((u_char)'.'); outlen = 2; } else { /* * First, get the name length. */ NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); len = fxdr_unsigned(int, *tl); if (len > NFS_MAXNAMLEN) { nd->nd_repstat = NFSERR_NAMETOL; error = 0; goto nfsmout; } else if (len <= 0) { nd->nd_repstat = NFSERR_INVAL; error = 0; goto nfsmout; } /* * Now, copy the component name into the buffer. */ fromcp = nd->nd_dpos; md = nd->nd_md; rem = mtod(md, caddr_t) + md->m_len - fromcp; for (i = 0; i < len; i++) { while (rem == 0) { md = md->m_next; if (md == NULL) { error = EBADRPC; goto nfsmout; } fromcp = mtod(md, caddr_t); rem = md->m_len; } if (*fromcp == '\0') { nd->nd_repstat = EACCES; error = 0; goto nfsmout; } /* * For lookups on the public filehandle, do some special * processing on the name. (The public file handle is the * root of the public file system for this server.) */ if (nd->nd_flag & ND_PUBLOOKUP) { /* * If the first char is ASCII, it is a canonical * path, otherwise it is a native path. (RFC2054 * doesn't actually state what it is if the first * char isn't ASCII or 0x80, so I assume native.) * pubtype == 1 -> native path * pubtype == 2 -> canonical path */ if (i == 0) { if (*fromcp & 0x80) { /* * Since RFC2054 doesn't indicate * that a native path of just 0x80 * isn't allowed, I'll replace the * 0x80 with '/' instead of just * throwing it away. */ *fromcp = '/'; pubtype = 1; } else { pubtype = 2; } } /* * '/' only allowed in a native path */ if (*fromcp == '/' && pubtype != 1) { nd->nd_repstat = EACCES; error = 0; goto nfsmout; } /* * For the special case of 2 hex digits after a * '%' in an absolute path, calculate the value. * percent == 1 -> indicates "get first hex digit" * percent == 2 -> indicates "get second hex digit" */ if (percent > 0) { digit = nfsrv_hexdigit(*fromcp, &error); if (error) { nd->nd_repstat = EACCES; error = 0; goto nfsmout; } if (percent == 1) { val = (digit << 4); percent = 2; } else { val += digit; percent = 0; *tocp++ = val; hash += ((u_char)val); outlen++; } } else { if (*fromcp == '%' && pubtype == 2) { /* * Must be followed by 2 hex digits */ if ((len - i) < 3) { nd->nd_repstat = EACCES; error = 0; goto nfsmout; } percent = 1; } else { *tocp++ = *fromcp; hash += ((u_char)*fromcp); outlen++; } } } else { /* * Normal, non lookup on public, name. */ if (*fromcp == '/') { if (nd->nd_flag & ND_NFSV4) nd->nd_repstat = NFSERR_BADNAME; else nd->nd_repstat = EACCES; error = 0; goto nfsmout; } hash += ((u_char)*fromcp); *tocp++ = *fromcp; outlen++; } fromcp++; rem--; } nd->nd_md = md; nd->nd_dpos = fromcp; i = NFSM_RNDUP(len) - len; if (i > 0) { if (rem >= i) { nd->nd_dpos += i; } else { error = nfsm_advance(nd, i, rem); if (error) goto nfsmout; } } /* * For v4, don't allow lookups of '.' or '..' and * also check for non-utf8 strings. */ if (nd->nd_flag & ND_NFSV4) { if ((outlen == 1 && bufp[0] == '.') || (outlen == 2 && bufp[0] == '.' && bufp[1] == '.')) { nd->nd_repstat = NFSERR_BADNAME; error = 0; goto nfsmout; } if (enable_checkutf8 == 1 && nfsrv_checkutf8((u_int8_t *)bufp, outlen)) { nd->nd_repstat = NFSERR_INVAL; error = 0; goto nfsmout; } } } *tocp = '\0'; *outlenp = (size_t)outlen + 1; if (hashp != NULL) *hashp = hash; nfsmout: NFSEXITCODE2(error, nd); return (error); } void nfsd_init(void) { int i; /* * Initialize client queues. Don't free/reinitialize * them when nfsds are restarted. */ NFSD_VNET(nfsclienthash) = malloc(sizeof(struct nfsclienthashhead) * nfsrv_clienthashsize, M_NFSDCLIENT, M_WAITOK | M_ZERO); for (i = 0; i < nfsrv_clienthashsize; i++) LIST_INIT(&NFSD_VNET(nfsclienthash)[i]); NFSD_VNET(nfslockhash) = malloc(sizeof(struct nfslockhashhead) * nfsrv_lockhashsize, M_NFSDLOCKFILE, M_WAITOK | M_ZERO); for (i = 0; i < nfsrv_lockhashsize; i++) LIST_INIT(&NFSD_VNET(nfslockhash)[i]); NFSD_VNET(nfssessionhash) = malloc(sizeof(struct nfssessionhash) * nfsrv_sessionhashsize, M_NFSDSESSION, M_WAITOK | M_ZERO); for (i = 0; i < nfsrv_sessionhashsize; i++) { mtx_init(&NFSD_VNET(nfssessionhash)[i].mtx, "nfssm", NULL, MTX_DEF); LIST_INIT(&NFSD_VNET(nfssessionhash)[i].list); } LIST_INIT(&nfsrv_dontlisthead); TAILQ_INIT(&nfsrv_recalllisthead); /* and the v2 pubfh should be all zeros */ NFSBZERO(nfs_v2pubfh, NFSX_V2FH); } /* * Check the v4 root exports. * Return 0 if ok, 1 otherwise. */ int nfsd_checkrootexp(struct nfsrv_descript *nd) { if (NFSD_VNET(nfs_rootfhset) == 0) return (NFSERR_AUTHERR | AUTH_FAILED); /* * For NFSv4.1/4.2, if the client specifies SP4_NONE, then these * operations are allowed regardless of the value of the "sec=XXX" * field in the V4: exports line. * As such, these Kerberos checks only apply to NFSv4.0 mounts. */ if ((nd->nd_flag & ND_NFSV41) != 0) goto checktls; if ((nd->nd_flag & (ND_GSS | ND_EXAUTHSYS)) == ND_EXAUTHSYS) goto checktls; if ((nd->nd_flag & (ND_GSSINTEGRITY | ND_EXGSSINTEGRITY)) == (ND_GSSINTEGRITY | ND_EXGSSINTEGRITY)) goto checktls; if ((nd->nd_flag & (ND_GSSPRIVACY | ND_EXGSSPRIVACY)) == (ND_GSSPRIVACY | ND_EXGSSPRIVACY)) goto checktls; if ((nd->nd_flag & (ND_GSS | ND_GSSINTEGRITY | ND_GSSPRIVACY | ND_EXGSS)) == (ND_GSS | ND_EXGSS)) goto checktls; return (NFSERR_AUTHERR | AUTH_TOOWEAK); checktls: if ((nd->nd_flag & ND_EXTLS) == 0) return (0); if ((nd->nd_flag & (ND_TLSCERTUSER | ND_EXTLSCERTUSER)) == (ND_TLSCERTUSER | ND_EXTLSCERTUSER)) return (0); if ((nd->nd_flag & (ND_TLSCERT | ND_EXTLSCERT | ND_EXTLSCERTUSER)) == (ND_TLSCERT | ND_EXTLSCERT)) return (0); if ((nd->nd_flag & (ND_TLS | ND_EXTLSCERTUSER | ND_EXTLSCERT)) == ND_TLS) return (0); #ifdef notnow /* There is currently no auth_stat for this. */ if ((nd->nd_flag & ND_TLS) == 0) return (NFSERR_AUTHERR | AUTH_NEEDS_TLS); return (NFSERR_AUTHERR | AUTH_NEEDS_TLS_MUTUAL_HOST); #endif return (NFSERR_AUTHERR | AUTH_TOOWEAK); } /* * Parse the first part of an NFSv4 compound to find out what the minor * version# is. */ void nfsd_getminorvers(struct nfsrv_descript *nd, u_char *tag, u_char **tagstrp, int *taglenp, u_int32_t *minversp) { uint32_t *tl; int error = 0, taglen = -1; u_char *tagstr = NULL; NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); taglen = fxdr_unsigned(int, *tl); if (taglen < 0 || taglen > NFSV4_OPAQUELIMIT) { error = EBADRPC; goto nfsmout; } if (taglen <= NFSV4_SMALLSTR) tagstr = tag; else tagstr = malloc(taglen + 1, M_TEMP, M_WAITOK); error = nfsrv_mtostr(nd, tagstr, taglen); if (error != 0) goto nfsmout; NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); *minversp = fxdr_unsigned(u_int32_t, *tl); *tagstrp = tagstr; if (*minversp == NFSV41_MINORVERSION) nd->nd_flag |= ND_NFSV41; else if (*minversp == NFSV42_MINORVERSION) nd->nd_flag |= (ND_NFSV41 | ND_NFSV42); nfsmout: if (error != 0) { if (tagstr != NULL && taglen > NFSV4_SMALLSTR) free(tagstr, M_TEMP); taglen = -1; } *taglenp = taglen; }