From: Jan Blunck <jblunck@xxxxxxx>
The userspace isn't ready for handling another filetype. Therefore this
patch lets readdir() and others skip over the whiteout directory entries
they might find.
Signed-off-by: Jan Blunck <j.blunck@xxxxxxxxxxxxx>
Signed-off-by: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Signed-off-by: Valerie Aurora <vaurora@xxxxxxxxxx>
---
fs/compat.c | 9 +++++++++
fs/nfsd/nfs3xdr.c | 5 +++++
fs/nfsd/nfs4xdr.c | 2 +-
fs/nfsd/nfsxdr.c | 4 ++++
fs/readdir.c | 9 +++++++++
5 files changed, 28 insertions(+), 1 deletions(-)
diff --git a/fs/compat.c b/fs/compat.c
index 6d6f98f..43f6102 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -847,6 +847,9 @@ 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;
@@ -918,6 +921,9 @@ 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;
@@ -1007,6 +1013,9 @@ 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 01d4ec1..59576d0 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -884,6 +884,11 @@ 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 2dcc7fe..8c25012 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2263,7 +2263,7 @@ nfsd4_encode_dirent(void *ccdv, const char *name, int namlen,
__be32 nfserr = nfserr_toosmall;
/* In nfsv4, "." and ".." never make it onto the wire.. */
- if (name && isdotent(name, namlen)) {
+ if (d_type == DT_WHT || (name && isdotent(name, namlen))) {
cd->common.err = nfs_ok;
return 0;
}
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index afd08e2..a7d622c 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -513,6 +513,10 @@ 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
--
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