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authorLinus Torvalds <torvalds@linux-foundation.org>2023-07-04 11:52:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-07-04 11:52:54 -0700
commit538140ca602b1c5f3870bef051c93b491045f70a (patch)
treeee12aae771ad4718f6177132b415c7951f898b36 /fs/overlayfs/params.h
parent94c76955e86a5a4f16a1d690b66dcc268c156e6a (diff)
parent7fb7998b599a2e1f3744fbd34a3e7145da841ed1 (diff)
downloadlwn-538140ca602b1c5f3870bef051c93b491045f70a.tar.gz
lwn-538140ca602b1c5f3870bef051c93b491045f70a.zip
Merge tag 'ovl-update-6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs
Pull more overlayfs updates from Amir Goldstein: "This is a small 'move code around' followup by Christian to his work on porting overlayfs to the new mount api for 6.5. It makes things a bit cleaner and simpler for the next development cycle when I hand overlayfs back over to Miklos" * tag 'ovl-update-6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs: ovl: move all parameter handling into params.{c,h}
Diffstat (limited to 'fs/overlayfs/params.h')
-rw-r--r--fs/overlayfs/params.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/fs/overlayfs/params.h b/fs/overlayfs/params.h
new file mode 100644
index 000000000000..8750da68ab2a
--- /dev/null
+++ b/fs/overlayfs/params.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <linux/fs_context.h>
+#include <linux/fs_parser.h>
+
+struct ovl_fs;
+struct ovl_config;
+
+extern const struct fs_parameter_spec ovl_parameter_spec[];
+extern const struct constant_table ovl_parameter_redirect_dir[];
+
+/* The set of options that user requested explicitly via mount options */
+struct ovl_opt_set {
+ bool metacopy;
+ bool redirect;
+ bool nfs_export;
+ bool index;
+};
+
+#define OVL_MAX_STACK 500
+
+struct ovl_fs_context_layer {
+ char *name;
+ struct path path;
+};
+
+struct ovl_fs_context {
+ struct path upper;
+ struct path work;
+ size_t capacity;
+ size_t nr; /* includes nr_data */
+ size_t nr_data;
+ struct ovl_opt_set set;
+ struct ovl_fs_context_layer *lower;
+};
+
+int ovl_init_fs_context(struct fs_context *fc);
+void ovl_free_fs(struct ovl_fs *ofs);
+int ovl_fs_params_verify(const struct ovl_fs_context *ctx,
+ struct ovl_config *config);
+int ovl_show_options(struct seq_file *m, struct dentry *dentry);
+const char *ovl_xino_mode(struct ovl_config *config);