Date: Sun, 7 May 2017 21:22:47 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r317924 - stable/11/sys/fs/nfsclient Message-ID: <201705072122.v47LMlA4050535@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: rmacklem Date: Sun May 7 21:22:47 2017 New Revision: 317924 URL: https://svnweb.freebsd.org/changeset/base/317924 Log: MFC: r317272 Add checks for failed operations to the NFSv4 client function nfscl_mtofh(). The nfscl_mtofh() function didn't check for failed operations and, as such, would have returned EBADRPC for these cases, due to parsing failure. This patch adds checks, so that it returns with ND_NOMOREDATA set. This is needed for future use in the pNFS server and acts as a safety belt in the meantime. Modified: stable/11/sys/fs/nfsclient/nfs_clcomsubs.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/fs/nfsclient/nfs_clcomsubs.c ============================================================================== --- stable/11/sys/fs/nfsclient/nfs_clcomsubs.c Sun May 7 21:11:28 2017 (r317923) +++ stable/11/sys/fs/nfsclient/nfs_clcomsubs.c Sun May 7 21:22:47 2017 (r317924) @@ -471,6 +471,11 @@ nfscl_mtofh(struct nfsrv_descript *nd, s flag = fxdr_unsigned(int, *tl); } else if (nd->nd_flag & ND_NFSV4) { NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); + /* If the GetFH failed, clear flag. */ + if (*++tl != 0) { + nd->nd_flag |= ND_NOMOREDATA; + flag = 0; + } } if (flag) { error = nfsm_getfh(nd, nfhpp); @@ -481,8 +486,12 @@ nfscl_mtofh(struct nfsrv_descript *nd, s /* * Now, get the attributes. */ - if (nd->nd_flag & ND_NFSV4) { + if (flag != 0 && (nd->nd_flag & ND_NFSV4) != 0) { NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); + if (*++tl != 0) { + nd->nd_flag |= ND_NOMOREDATA; + flag = 0; + } } else if (nd->nd_flag & ND_NFSV3) { NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); if (flag) {
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201705072122.v47LMlA4050535>