This is a backported version for v3.14.
Commit 52755808d4525f4d5b86d112d36ffc7a46f3fb48 upstream.
SMB2 servers indicates the end of a directory search with
STATUS_NO_MORE_FILE error code that is not processed now.
This causes generic/257 xfstest to fail. Fix this by triggering
the end of search by this error code in SMB2_query_directory.
Also when negotiating CIFS protocol we tell the server to close
the search automatically at the end and there is no need to do
it itself. In the case of SMB2 protocol, we need to close it
explicitly - separate close directory checks for different
protocols.
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Pavel Shilovsky <pshilovsky@xxxxxxxxx>
Signed-off-by: Steve French <smfrench@xxxxxxxxx>
---
fs/cifs/cifsglob.h | 2 ++
fs/cifs/file.c | 2 +-
fs/cifs/readdir.c | 2 +-
fs/cifs/smb1ops.c | 7 +++++++
fs/cifs/smb2maperror.c | 2 +-
fs/cifs/smb2ops.c | 9 +++++++++
fs/cifs/smb2pdu.c | 9 ++++-----
7 files changed, 25 insertions(+), 8 deletions(-)
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 30f6e92..60d365e 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -404,6 +404,8 @@ struct smb_version_operations {
const struct cifs_fid *, u32 *);
int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *,
int);
+ /* check if we need to issue closedir */
+ bool (*dir_needs_close)(struct cifsFileInfo *);
};
struct smb_version_values {
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 87c4dd0..12f3a98 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -762,7 +762,7 @@ int cifs_closedir(struct inode *inode, struct file *file)
cifs_dbg(FYI, "Freeing private data in close dir\n");
spin_lock(&cifs_file_list_lock);
- if (!cfile->srch_inf.endOfSearch && !cfile->invalidHandle) {
+ if (server->ops->dir_needs_close(cfile)) {
cfile->invalidHandle = true;
spin_unlock(&cifs_file_list_lock);
if (server->ops->close_dir)
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index b15862e..798c80a 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -593,7 +593,7 @@ find_cifs_entry(const unsigned int xid, struct cifs_tcon *tcon, loff_t pos,
/* close and restart search */
cifs_dbg(FYI, "search backing up - close and restart search\n");
spin_lock(&cifs_file_list_lock);
- if (!cfile->srch_inf.endOfSearch && !cfile->invalidHandle) {
+ if (server->ops->dir_needs_close(cfile)) {
cfile->invalidHandle = true;
spin_unlock(&cifs_file_list_lock);
if (server->ops->close)
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index d1fdfa8..84ca0a4 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -1009,6 +1009,12 @@ cifs_is_read_op(__u32 oplock)
return oplock == OPLOCK_READ;
}
+static bool
+cifs_dir_needs_close(struct cifsFileInfo *cfile)
+{
+ return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
+}
+
struct smb_version_operations smb1_operations = {
.send_cancel = send_nt_cancel,
.compare_fids = cifs_compare_fids,
@@ -1078,6 +1084,7 @@ struct smb_version_operations smb1_operations = {
.query_mf_symlink = cifs_query_mf_symlink,
.create_mf_symlink = cifs_create_mf_symlink,
.is_read_op = cifs_is_read_op,
+ .dir_needs_close = cifs_dir_needs_close,
#ifdef CONFIG_CIFS_XATTR
.query_all_EAs = CIFSSMBQAllEAs,
.set_EA = CIFSSMBSetEA,
diff --git a/fs/cifs/smb2maperror.c b/fs/cifs/smb2maperror.c
index 94bd4fb..d8c01457 100644
--- a/fs/cifs/smb2maperror.c
+++ b/fs/cifs/smb2maperror.c
@@ -214,7 +214,7 @@ static const struct status_to_posix_error smb2_error_map_table[] = {
{STATUS_BREAKPOINT, -EIO, "STATUS_BREAKPOINT"},
{STATUS_SINGLE_STEP, -EIO, "STATUS_SINGLE_STEP"},
{STATUS_BUFFER_OVERFLOW, -EIO, "STATUS_BUFFER_OVERFLOW"},
- {STATUS_NO_MORE_FILES, -EIO, "STATUS_NO_MORE_FILES"},
+ {STATUS_NO_MORE_FILES, -ENODATA, "STATUS_NO_MORE_FILES"},
{STATUS_WAKE_SYSTEM_DEBUGGER, -EIO, "STATUS_WAKE_SYSTEM_DEBUGGER"},
{STATUS_HANDLES_CLOSED, -EIO, "STATUS_HANDLES_CLOSED"},
{STATUS_NO_INHERITANCE, -EIO, "STATUS_NO_INHERITANCE"},
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 35ddc3e..a628cf8 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1102,6 +1102,12 @@ smb3_parse_lease_buf(void *buf, unsigned int *epoch)
return le32_to_cpu(lc->lcontext.LeaseState);
}
+static bool
+smb2_dir_needs_close(struct cifsFileInfo *cfile)
+{
+ return !cfile->invalidHandle;
+}
+
struct smb_version_operations smb20_operations = {
.compare_fids = smb2_compare_fids,
.setup_request = smb2_setup_request,
@@ -1175,6 +1181,7 @@ struct smb_version_operations smb20_operations = {
.create_lease_buf = smb2_create_lease_buf,
.parse_lease_buf = smb2_parse_lease_buf,
.clone_range = smb2_clone_range,
+ .dir_needs_close = smb2_dir_needs_close,
};
struct smb_version_operations smb21_operations = {
@@ -1250,6 +1257,7 @@ struct smb_version_operations smb21_operations = {
.create_lease_buf = smb2_create_lease_buf,
.parse_lease_buf = smb2_parse_lease_buf,
.clone_range = smb2_clone_range,
+ .dir_needs_close = smb2_dir_needs_close,
};
struct smb_version_operations smb30_operations = {
@@ -1328,6 +1336,7 @@ struct smb_version_operations smb30_operations = {
.parse_lease_buf = smb3_parse_lease_buf,
.clone_range = smb2_clone_range,
.validate_negotiate = smb3_validate_negotiate,
+ .dir_needs_close = smb2_dir_needs_close,
};
struct smb_version_values smb20_values = {
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 049a3f2..e5129b3 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2135,6 +2135,10 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
rsp = (struct smb2_query_directory_rsp *)iov[0].iov_base;
if (rc) {
+ if (rc == -ENODATA && rsp->hdr.Status == STATUS_NO_MORE_FILES) {
+ srch_inf->endOfSearch = true;
+ rc = 0;
+ }
cifs_stats_fail_inc(tcon, SMB2_QUERY_DIRECTORY_HE);
goto qdir_exit;
}
@@ -2172,11 +2176,6 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
else
cifs_dbg(VFS, "illegal search buffer type\n");
- if (rsp->hdr.Status == STATUS_NO_MORE_FILES)
- srch_inf->endOfSearch = 1;
- else
- srch_inf->endOfSearch = 0;
-
return rc;
qdir_exit:
--
1.7.10.4
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