Date: Sat, 3 May 2014 00:13:45 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r265252 - in head/sys/fs: nfs nfsserver Message-ID: <201405030013.s430DjDp034424@svn.freebsd.org>
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Author: rmacklem Date: Sat May 3 00:13:45 2014 New Revision: 265252 URL: http://svnweb.freebsd.org/changeset/base/265252 Log: The new draft specification for NFSv4.0 specifies that a server should either accept owner and owner_group strings that are just the digits of the uid/gid or return NFS4ERR_BADOWNER. This patch adds a sysctl vfs.nfsd.enable_stringtouid, which can be set to enable the server w.r.t. accepting numeric string. It also ensures that NFS4ERR_BADOWNER is returned if numeric uid/gid strings are not enabled. This fixes the server for recent Linux nfs4 clients that use numeric uid/gid strings by default. Reported and tested by: craigyk@gmail.com MFC after: 2 weeks Modified: head/sys/fs/nfs/nfs_commonsubs.c head/sys/fs/nfsserver/nfs_nfsdport.c Modified: head/sys/fs/nfs/nfs_commonsubs.c ============================================================================== --- head/sys/fs/nfs/nfs_commonsubs.c Fri May 2 23:47:14 2014 (r265251) +++ head/sys/fs/nfs/nfs_commonsubs.c Sat May 3 00:13:45 2014 (r265252) @@ -65,6 +65,7 @@ uid_t nfsrv_defaultuid; gid_t nfsrv_defaultgid; int nfsrv_lease = NFSRV_LEASE; int ncl_mbuf_mlen = MLEN; +int nfsd_enable_stringtouid = 0; NFSNAMEIDMUTEX; NFSSOCKMUTEX; @@ -2640,9 +2641,14 @@ nfsv4_strtouid(struct nfsrv_descript *nd /* If a string of digits and an AUTH_SYS mount, just convert it. */ str0 = str; tuid = (uid_t)strtoul(str0, &endstr, 10); - if ((endstr - str0) == len && - (nd->nd_flag & (ND_KERBV | ND_NFSCL)) == ND_NFSCL) { - *uidp = tuid; + if ((endstr - str0) == len) { + /* A numeric string. */ + if ((nd->nd_flag & ND_KERBV) == 0 && + ((nd->nd_flag & ND_NFSCL) != 0 || + nfsd_enable_stringtouid != 0)) + *uidp = tuid; + else + error = NFSERR_BADOWNER; goto out; } /* @@ -2845,9 +2851,14 @@ nfsv4_strtogid(struct nfsrv_descript *nd /* If a string of digits and an AUTH_SYS mount, just convert it. */ str0 = str; tgid = (gid_t)strtoul(str0, &endstr, 10); - if ((endstr - str0) == len && - (nd->nd_flag & (ND_KERBV | ND_NFSCL)) == ND_NFSCL) { - *gidp = tgid; + if ((endstr - str0) == len) { + /* A numeric string. */ + if ((nd->nd_flag & ND_KERBV) == 0 && + ((nd->nd_flag & ND_NFSCL) != 0 || + nfsd_enable_stringtouid != 0)) + *gidp = tgid; + else + error = NFSERR_BADOWNER; goto out; } /* Modified: head/sys/fs/nfsserver/nfs_nfsdport.c ============================================================================== --- head/sys/fs/nfsserver/nfs_nfsdport.c Fri May 2 23:47:14 2014 (r265251) +++ head/sys/fs/nfsserver/nfs_nfsdport.c Sat May 3 00:13:45 2014 (r265252) @@ -80,6 +80,7 @@ static int nfs_commit_blks; static int nfs_commit_miss; extern int nfsrv_issuedelegs; extern int nfsrv_dolocallocks; +extern int nfsd_enable_stringtouid; SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server"); SYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, @@ -92,6 +93,8 @@ SYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_de &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW, &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); +SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_stringtouid, CTLFLAG_RW, + &nfsd_enable_stringtouid, 0, "Enable nfsd to accept numeric owner_names"); #define MAX_REORDERED_RPC 16 #define NUM_HEURISTIC 1031
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