Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758107Ab0DOXO0 (ORCPT ); Thu, 15 Apr 2010 19:14:26 -0400 Received: from mx1.redhat.com ([209.132.183.28]:54507 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932076Ab0DOXFm (ORCPT ); Thu, 15 Apr 2010 19:05:42 -0400 From: Valerie Aurora To: Alexander Viro Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jan Blunck , David Woodhouse , Valerie Aurora , linux-nfs@vger.kernel.org, "J. Bruce Fields" , Neil Brown Subject: [PATCH 04/35] whiteout/NFSD: Don't return information about whiteouts to userspace Date: Thu, 15 Apr 2010 16:04:11 -0700 Message-Id: <1271372682-21225-5-git-send-email-vaurora@redhat.com> In-Reply-To: <1271372682-21225-4-git-send-email-vaurora@redhat.com> References: <1271372682-21225-1-git-send-email-vaurora@redhat.com> <1271372682-21225-2-git-send-email-vaurora@redhat.com> <1271372682-21225-3-git-send-email-vaurora@redhat.com> <1271372682-21225-4-git-send-email-vaurora@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4195 Lines: 142 From: Jan Blunck Userspace isn't ready for handling another file type, so silently drop whiteout directory entries before they leave the kernel. Signed-off-by: Jan Blunck Signed-off-by: David Woodhouse Signed-off-by: Valerie Aurora Cc: linux-nfs@vger.kernel.org Cc: "J. Bruce Fields" Cc: Neil Brown --- fs/compat.c | 9 +++++++++ fs/nfsd/nfs3xdr.c | 5 +++++ fs/nfsd/nfs4xdr.c | 5 +++++ fs/nfsd/nfsxdr.c | 4 ++++ fs/readdir.c | 9 +++++++++ 5 files changed, 32 insertions(+), 0 deletions(-) diff --git a/fs/compat.c b/fs/compat.c index 00d90c2..624e1a5 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -838,6 +838,9 @@ static int compat_fillonedir(void *__buf, const char *name, int namlen, struct compat_old_linux_dirent __user *dirent; compat_ulong_t d_ino; + if (d_type == DT_WHT) + return 0; + if (buf->result) return -EINVAL; d_ino = ino; @@ -909,6 +912,9 @@ static int compat_filldir(void *__buf, const char *name, int namlen, compat_ulong_t d_ino; int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 2, sizeof(compat_long_t)); + if (d_type == DT_WHT) + return 0; + buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) return -EINVAL; @@ -998,6 +1004,9 @@ static int compat_filldir64(void * __buf, const char * name, int namlen, loff_t int reclen = ALIGN(jj + namlen + 1, sizeof(u64)); u64 off; + if (d_type == DT_WHT) + return 0; + buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) return -EINVAL; diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c index 2a533a0..9b96f5a 100644 --- a/fs/nfsd/nfs3xdr.c +++ b/fs/nfsd/nfs3xdr.c @@ -885,6 +885,11 @@ encode_entry(struct readdir_cd *ccd, const char *name, int namlen, int elen; /* estimated entry length in words */ int num_entry_words = 0; /* actual number of words */ + if (d_type == DT_WHT) { + cd->common.err = nfs_ok; + return 0; + } + if (cd->offset) { u64 offset64 = offset; diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 78c7e24..8839ba8 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -2268,6 +2268,11 @@ nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, return 0; } + if (d_type == DT_WHT) { + cd->common.err = nfs_ok; + return 0; + } + if (cd->offset) xdr_encode_hyper(cd->offset, (u64) offset); diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c index 4ce005d..0e57d4b 100644 --- a/fs/nfsd/nfsxdr.c +++ b/fs/nfsd/nfsxdr.c @@ -503,6 +503,10 @@ nfssvc_encode_entry(void *ccdv, const char *name, namlen, name, offset, ino); */ + if (d_type == DT_WHT) { + cd->common.err = nfs_ok; + return 0; + } if (offset > ~((u32) 0)) { cd->common.err = nfserr_fbig; return -EINVAL; diff --git a/fs/readdir.c b/fs/readdir.c index 7723401..3a48491 100644 --- a/fs/readdir.c +++ b/fs/readdir.c @@ -77,6 +77,9 @@ static int fillonedir(void * __buf, const char * name, int namlen, loff_t offset struct old_linux_dirent __user * dirent; unsigned long d_ino; + if (d_type == DT_WHT) + return 0; + if (buf->result) return -EINVAL; d_ino = ino; @@ -154,6 +157,9 @@ static int filldir(void * __buf, const char * name, int namlen, loff_t offset, unsigned long d_ino; int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 2, sizeof(long)); + if (d_type == DT_WHT) + return 0; + buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) return -EINVAL; @@ -239,6 +245,9 @@ static int filldir64(void * __buf, const char * name, int namlen, loff_t offset, struct getdents_callback64 * buf = (struct getdents_callback64 *) __buf; int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 1, sizeof(u64)); + if (d_type == DT_WHT) + return 0; + buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) return -EINVAL; -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/