X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Fcifs%2Fsmb1ops.c;h=8233b174de3d62c6e5a3223919e83db8f7c57016;hb=1d083bc93d159ebcb46c5cbeca512ddd74a74e4b;hp=60943978aec35bb06360adb7e060802d5775bee1;hpb=d8cacd3a259bf522ea5e6c4c60eba67ba22f599c;p=firefly-linux-kernel-4.4.55.git

diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 60943978aec3..8233b174de3d 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -700,7 +700,7 @@ cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
 	struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
 	cfile->fid.netfid = fid->netfid;
 	cifs_set_oplock_level(cinode, oplock);
-	cinode->can_cache_brlcks = cinode->clientCanCacheAll;
+	cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
 }
 
 static void
@@ -837,7 +837,7 @@ cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 {
 	return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
 			   LOCKING_ANDX_OPLOCK_RELEASE, false,
-			   cinode->clientCanCacheRead ? 1 : 0);
+			   CIFS_CACHE_READ(cinode) ? 1 : 0);
 }
 
 static int
@@ -881,6 +881,43 @@ cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 			   (__u8)type, wait, 0);
 }
 
+static int
+cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
+		   const char *full_path, char **target_path,
+		   struct cifs_sb_info *cifs_sb)
+{
+	int rc;
+	int oplock = 0;
+	__u16 netfid;
+
+	cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
+
+	rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
+			 FILE_READ_ATTRIBUTES, OPEN_REPARSE_POINT, &netfid,
+			 &oplock, NULL, cifs_sb->local_nls,
+			 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+	if (rc)
+		return rc;
+
+	rc = CIFSSMBQuerySymLink(xid, tcon, netfid, target_path,
+				 cifs_sb->local_nls);
+	if (rc) {
+		CIFSSMBClose(xid, tcon, netfid);
+		return rc;
+	}
+
+	convert_delimiter(*target_path, '/');
+	CIFSSMBClose(xid, tcon, netfid);
+	cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
+	return rc;
+}
+
+static bool
+cifs_is_read_op(__u32 oplock)
+{
+	return oplock == OPLOCK_READ;
+}
+
 struct smb_version_operations smb1_operations = {
 	.send_cancel = send_nt_cancel,
 	.compare_fids = cifs_compare_fids,
@@ -927,6 +964,7 @@ struct smb_version_operations smb1_operations = {
 	.rename_pending_delete = cifs_rename_pending_delete,
 	.rename = CIFSSMBRename,
 	.create_hardlink = CIFSCreateHardLink,
+	.query_symlink = cifs_query_symlink,
 	.open = cifs_open_file,
 	.set_fid = cifs_set_fid,
 	.close = cifs_close_file,
@@ -945,6 +983,7 @@ struct smb_version_operations smb1_operations = {
 	.mand_unlock_range = cifs_unlock_range,
 	.push_mand_locks = cifs_push_mandatory_locks,
 	.query_mf_symlink = open_query_close_cifs_symlink,
+	.is_read_op = cifs_is_read_op,
 };
 
 struct smb_version_values smb1_values = {
@@ -960,7 +999,6 @@ struct smb_version_values smb1_values = {
 	.cap_unix = CAP_UNIX,
 	.cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
 	.cap_large_files = CAP_LARGE_FILES,
-	.oplock_read = OPLOCK_READ,
 	.signing_enabled = SECMODE_SIGN_ENABLED,
 	.signing_required = SECMODE_SIGN_REQUIRED,
 };