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-rw-r--r--fs/overlayfs/copy_up.c8
-rw-r--r--fs/overlayfs/export.c4
-rw-r--r--fs/overlayfs/namei.c4
-rw-r--r--fs/overlayfs/ovl_entry.h5
-rw-r--r--fs/overlayfs/params.c2
-rw-r--r--fs/overlayfs/readdir.c2
-rw-r--r--fs/overlayfs/super.c19
-rw-r--r--fs/overlayfs/util.c2
8 files changed, 22 insertions, 24 deletions
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index 45cadc3aed85..696478f09cc1 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -953,6 +953,13 @@ static int ovl_do_copy_up(struct ovl_copy_up_ctx *c)
goto out_free_fh;
} else {
/*
+ * c->dentry->d_name is stabilzed by ovl_copy_up_start(),
+ * because if we got here, it means that c->dentry has no upper
+ * alias and changing ->d_name means going through ovl_rename()
+ * that will call ovl_copy_up() on source and target dentry.
+ */
+ c->destname = c->dentry->d_name;
+ /*
* Mark parent "impure" because it may now contain non-pure
* upper
*/
@@ -1132,7 +1139,6 @@ static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,
if (parent) {
ovl_path_upper(parent, &parentpath);
ctx.destdir = parentpath.dentry;
- ctx.destname = dentry->d_name;
err = vfs_getattr(&parentpath, &ctx.pstat,
STATX_ATIME | STATX_MTIME,
diff --git a/fs/overlayfs/export.c b/fs/overlayfs/export.c
index 7e16bbcad95e..6909c4a5da56 100644
--- a/fs/overlayfs/export.c
+++ b/fs/overlayfs/export.c
@@ -460,7 +460,7 @@ static struct dentry *ovl_lookup_real_inode(struct super_block *sb,
* For decoded lower dir file handle, lookup index by origin to check
* if lower dir was copied up and and/or removed.
*/
- if (!this && layer->idx && ofs->indexdir && !WARN_ON(!d_is_dir(real))) {
+ if (!this && layer->idx && ovl_indexdir(sb) && !WARN_ON(!d_is_dir(real))) {
index = ovl_lookup_index(ofs, NULL, real, false);
if (IS_ERR(index))
return index;
@@ -733,7 +733,7 @@ static struct dentry *ovl_lower_fh_to_d(struct super_block *sb,
}
/* Then lookup indexed upper/whiteout by origin fh */
- if (ofs->indexdir) {
+ if (ovl_indexdir(sb)) {
index = ovl_get_index_fh(ofs, fh);
err = PTR_ERR(index);
if (IS_ERR(index)) {
diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c
index 03bc8d5dfa31..984ffdaeed6c 100644
--- a/fs/overlayfs/namei.c
+++ b/fs/overlayfs/namei.c
@@ -754,7 +754,7 @@ struct dentry *ovl_get_index_fh(struct ovl_fs *ofs, struct ovl_fh *fh)
if (err)
return ERR_PTR(err);
- index = lookup_positive_unlocked(name.name, ofs->indexdir, name.len);
+ index = lookup_positive_unlocked(name.name, ofs->workdir, name.len);
kfree(name.name);
if (IS_ERR(index)) {
if (PTR_ERR(index) == -ENOENT)
@@ -787,7 +787,7 @@ struct dentry *ovl_lookup_index(struct ovl_fs *ofs, struct dentry *upper,
return ERR_PTR(err);
index = lookup_one_positive_unlocked(ovl_upper_mnt_idmap(ofs), name.name,
- ofs->indexdir, name.len);
+ ofs->workdir, name.len);
if (IS_ERR(index)) {
err = PTR_ERR(index);
if (err == -ENOENT) {
diff --git a/fs/overlayfs/ovl_entry.h b/fs/overlayfs/ovl_entry.h
index d82d2a043da2..5fa9c58af65f 100644
--- a/fs/overlayfs/ovl_entry.h
+++ b/fs/overlayfs/ovl_entry.h
@@ -63,10 +63,8 @@ struct ovl_fs {
struct ovl_sb *fs;
/* workbasedir is the path at workdir= mount option */
struct dentry *workbasedir;
- /* workdir is the 'work' directory under workbasedir */
+ /* workdir is the 'work' or 'index' directory under workbasedir */
struct dentry *workdir;
- /* index directory listing overlay inodes by origin file handle */
- struct dentry *indexdir;
long namelen;
/* pathnames of lower and upper dirs, for show_options */
struct ovl_config config;
@@ -81,7 +79,6 @@ struct ovl_fs {
/* Traps in ovl inode cache */
struct inode *workbasedir_trap;
struct inode *workdir_trap;
- struct inode *indexdir_trap;
/* -1: disabled, 0: same fs, 1..32: number of unused ino bits */
int xino_mode;
/* For allocation of non-persistent inode numbers */
diff --git a/fs/overlayfs/params.c b/fs/overlayfs/params.c
index 3fe2dde1598f..112b4b12f825 100644
--- a/fs/overlayfs/params.c
+++ b/fs/overlayfs/params.c
@@ -743,10 +743,8 @@ void ovl_free_fs(struct ovl_fs *ofs)
unsigned i;
iput(ofs->workbasedir_trap);
- iput(ofs->indexdir_trap);
iput(ofs->workdir_trap);
dput(ofs->whiteout);
- dput(ofs->indexdir);
dput(ofs->workdir);
if (ofs->workdir_locked)
ovl_inuse_unlock(ofs->workbasedir);
diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
index a490fc47c3e7..e71156baa7bc 100644
--- a/fs/overlayfs/readdir.c
+++ b/fs/overlayfs/readdir.c
@@ -1169,7 +1169,7 @@ int ovl_workdir_cleanup(struct ovl_fs *ofs, struct inode *dir,
int ovl_indexdir_cleanup(struct ovl_fs *ofs)
{
int err;
- struct dentry *indexdir = ofs->indexdir;
+ struct dentry *indexdir = ofs->workdir;
struct dentry *index = NULL;
struct inode *dir = indexdir->d_inode;
struct path path = { .mnt = ovl_upper_mnt(ofs), .dentry = indexdir };
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 7131e3f5b9f5..0bbbe4818f67 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -853,10 +853,8 @@ static int ovl_get_indexdir(struct super_block *sb, struct ovl_fs *ofs,
if (IS_ERR(indexdir)) {
err = PTR_ERR(indexdir);
} else if (indexdir) {
- ofs->indexdir = indexdir;
- ofs->workdir = dget(indexdir);
-
- err = ovl_setup_trap(sb, ofs->indexdir, &ofs->indexdir_trap,
+ ofs->workdir = indexdir;
+ err = ovl_setup_trap(sb, indexdir, &ofs->workdir_trap,
"indexdir");
if (err)
goto out;
@@ -869,16 +867,15 @@ static int ovl_get_indexdir(struct super_block *sb, struct ovl_fs *ofs,
* ".overlay.upper" to indicate that index may have
* directory entries.
*/
- if (ovl_check_origin_xattr(ofs, ofs->indexdir)) {
- err = ovl_verify_origin_xattr(ofs, ofs->indexdir,
+ if (ovl_check_origin_xattr(ofs, indexdir)) {
+ err = ovl_verify_origin_xattr(ofs, indexdir,
OVL_XATTR_ORIGIN,
upperpath->dentry, true,
false);
if (err)
pr_err("failed to verify index dir 'origin' xattr\n");
}
- err = ovl_verify_upper(ofs, ofs->indexdir, upperpath->dentry,
- true);
+ err = ovl_verify_upper(ofs, indexdir, upperpath->dentry, true);
if (err)
pr_err("failed to verify index dir 'upper' xattr\n");
@@ -886,7 +883,7 @@ static int ovl_get_indexdir(struct super_block *sb, struct ovl_fs *ofs,
if (!err)
err = ovl_indexdir_cleanup(ofs);
}
- if (err || !ofs->indexdir)
+ if (err || !indexdir)
pr_warn("try deleting index dir or mounting with '-o index=off' to disable inodes index.\n");
out:
@@ -1406,7 +1403,7 @@ int ovl_fill_super(struct super_block *sb, struct fs_context *fc)
goto out_free_oe;
/* Force r/o mount with no index dir */
- if (!ofs->indexdir)
+ if (!ofs->workdir)
sb->s_flags |= SB_RDONLY;
}
@@ -1415,7 +1412,7 @@ int ovl_fill_super(struct super_block *sb, struct fs_context *fc)
goto out_free_oe;
/* Show index=off in /proc/mounts for forced r/o mount */
- if (!ofs->indexdir) {
+ if (!ofs->workdir) {
ofs->config.index = false;
if (ovl_upper_mnt(ofs) && ofs->config.nfs_export) {
pr_warn("NFS export requires an index dir, falling back to nfs_export=off.\n");
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index c3f020ca13a8..22b519763267 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -91,7 +91,7 @@ struct dentry *ovl_indexdir(struct super_block *sb)
{
struct ovl_fs *ofs = OVL_FS(sb);
- return ofs->indexdir;
+ return ofs->config.index ? ofs->workdir : NULL;
}
/* Index all files on copy up. For now only enabled for NFS export */
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-23 18:00:56 +0000