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cifs: Add mount option -o reparse=none

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This new mount option allows to completely disable creating new reparse
points. When -o sfu or -o mfsymlinks or -o symlink= 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@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Pali Rohár
2024-09-21 16:15:30 +02:00
committed by Steve French
parent 660618dde2
commit 78f69467cb
3 changed files with 11 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
fs/smb/client/cifsglob.h
+3
View File
@@ -160,6 +160,7 @@ enum upcall_target_enum {
};
enum cifs_reparse_type {
CIFS_REPARSE_TYPE_NONE,
CIFS_REPARSE_TYPE_NFS,
CIFS_REPARSE_TYPE_WSL,
CIFS_REPARSE_TYPE_DEFAULT = CIFS_REPARSE_TYPE_NFS,
@@ -168,6 +169,8 @@ 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_NFS:
return "nfs";
case CIFS_REPARSE_TYPE_WSL:
fs/smb/client/fs_context.c
+7 -1
View File
@@ -334,6 +334,7 @@ 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_nfs, "nfs" },
{ Opt_reparse_wsl, "wsl" },
{ Opt_reparse_err, NULL },
@@ -348,6 +349,9 @@ 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_nfs:
ctx->reparse_type = CIFS_REPARSE_TYPE_NFS;
break;
@@ -1828,8 +1832,10 @@ enum cifs_symlink_type get_cifs_symlink_type(struct cifs_sb_info *cifs_sb)
return CIFS_SYMLINK_TYPE_SFU;
else if (cifs_sb->ctx->linux_ext && !cifs_sb->ctx->no_linux_ext)
return CIFS_SYMLINK_TYPE_UNIX;
else
else if (cifs_sb->ctx->reparse_type != CIFS_REPARSE_TYPE_NONE)
return CIFS_SYMLINK_TYPE_NATIVE;
else
return CIFS_SYMLINK_TYPE_NONE;
} else {
return cifs_sb->ctx->symlink_type;
}
fs/smb/client/fs_context.h
+1
View File
@@ -43,6 +43,7 @@ enum {
enum cifs_reparse_parm {
Opt_reparse_default,
Opt_reparse_none,
Opt_reparse_nfs,
Opt_reparse_wsl,
Opt_reparse_err