This new mount option allows to completely disable creating new reparse
points. When -o sfu or -o mfsymlinks is not specified then creating any
special file (fifo, socket, symlink, block and char) will fail with
-EOPNOTSUPP error.
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
---
fs/smb/client/cifsglob.h | 3 +++
fs/smb/client/fs_context.c | 4 ++++
fs/smb/client/fs_context.h | 1 +
3 files changed, 8 insertions(+)
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index 367f0ac6400d..7632d2ba5390 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -154,6 +154,7 @@ enum securityEnum {
};
enum cifs_reparse_type {
+ CIFS_REPARSE_TYPE_NONE, /* disable creating new reparse points */
CIFS_REPARSE_TYPE_NATIVE, /* native symlinks only */
CIFS_REPARSE_TYPE_NATIVE_NFS, /* native for symlinks, nfs for others */
CIFS_REPARSE_TYPE_NATIVE_WSL, /* native for symlinks, wsl for others */
@@ -165,6 +166,8 @@ enum cifs_reparse_type {
static inline const char *cifs_reparse_type_str(enum cifs_reparse_type type)
{
switch (type) {
+ case CIFS_REPARSE_TYPE_NONE:
+ return "none";
case CIFS_REPARSE_TYPE_NATIVE:
return "native";
case CIFS_REPARSE_TYPE_NATIVE_NFS:
diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c
index e5de84912e3d..3e402961cc95 100644
--- a/fs/smb/client/fs_context.c
+++ b/fs/smb/client/fs_context.c
@@ -303,6 +303,7 @@ cifs_parse_cache_flavor(struct fs_context *fc, char *value, struct smb3_fs_conte
static const match_table_t reparse_flavor_tokens = {
{ Opt_reparse_default, "default" },
+ { Opt_reparse_none, "none" },
{ Opt_reparse_native, "native" },
{ Opt_reparse_native_nfs, "native+nfs" },
{ Opt_reparse_native_wsl, "native+wsl" },
@@ -320,6 +321,9 @@ static int parse_reparse_flavor(struct fs_context *fc, char *value,
case Opt_reparse_default:
ctx->reparse_type = CIFS_REPARSE_TYPE_DEFAULT;
break;
+ case Opt_reparse_none:
+ ctx->reparse_type = CIFS_REPARSE_TYPE_NONE;
+ break;
case Opt_reparse_native:
ctx->reparse_type = CIFS_REPARSE_TYPE_NATIVE;
break;
diff --git a/fs/smb/client/fs_context.h b/fs/smb/client/fs_context.h
index 1011176ba3b7..5db06de2ed35 100644
--- a/fs/smb/client/fs_context.h
+++ b/fs/smb/client/fs_context.h
@@ -43,6 +43,7 @@ enum {
enum cifs_reparse_parm {
Opt_reparse_default,
+ Opt_reparse_none,
Opt_reparse_native,
Opt_reparse_native_nfs,
Opt_reparse_native_wsl,
--
2.20.1
