From: Miklos Szeredi <mszeredi@redhat.com>
To: linux-unionfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 06/11] ovl: create helper ovl_create_temp()
Date: Tue, 29 May 2018 16:41:38 +0200 [thread overview]
Message-ID: <20180529144143.16378-7-mszeredi@redhat.com> (raw)
In-Reply-To: <20180529144143.16378-1-mszeredi@redhat.com>
From: Amir Goldstein <amir73il@gmail.com>
Also used ovl_create_temp() in ovl_create_index() instead of calling
ovl_do_mkdir() directly, so now all callers of ovl_do_mkdir() are routed
through ovl_create_real(), which paves the way for Al's fix for non-hashed
result from vfs_mkdir().
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---
fs/overlayfs/copy_up.c | 14 ++++----------
fs/overlayfs/dir.c | 13 +++++++++----
fs/overlayfs/overlayfs.h | 2 +-
3 files changed, 14 insertions(+), 15 deletions(-)
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index d3e9c1eeb7a4..1b442c14c531 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -365,14 +365,10 @@ static int ovl_create_index(struct dentry *dentry, struct dentry *origin,
if (err)
return err;
- temp = ovl_lookup_temp(indexdir);
+ temp = ovl_create_temp(indexdir, OVL_CATTR(S_IFDIR | 0));
if (IS_ERR(temp))
goto temp_err;
- err = ovl_do_mkdir(dir, temp, S_IFDIR);
- if (err)
- goto out;
-
err = ovl_set_upper_fh(upper, temp);
if (err)
goto out_cleanup;
@@ -500,12 +496,10 @@ static int ovl_get_tmpfile(struct ovl_copy_up_ctx *c, struct dentry **tempp)
if (new_creds)
old_creds = override_creds(new_creds);
- if (c->tmpfile) {
+ if (c->tmpfile)
temp = ovl_do_tmpfile(c->workdir, c->stat.mode);
- } else {
- temp = ovl_create_real(d_inode(c->workdir),
- ovl_lookup_temp(c->workdir), &cattr);
- }
+ else
+ temp = ovl_create_temp(c->workdir, &cattr);
if (IS_ERR(temp))
goto temp_err;
err = 0;
diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
index 425ddb098c4a..1b181292a624 100644
--- a/fs/overlayfs/dir.c
+++ b/fs/overlayfs/dir.c
@@ -43,7 +43,7 @@ int ovl_cleanup(struct inode *wdir, struct dentry *wdentry)
return err;
}
-struct dentry *ovl_lookup_temp(struct dentry *workdir)
+static struct dentry *ovl_lookup_temp(struct dentry *workdir)
{
struct dentry *temp;
char name[20];
@@ -169,6 +169,12 @@ struct dentry *ovl_create_real(struct inode *dir, struct dentry *newdentry,
return newdentry;
}
+struct dentry *ovl_create_temp(struct dentry *workdir, struct ovl_cattr *attr)
+{
+ return ovl_create_real(d_inode(workdir), ovl_lookup_temp(workdir),
+ attr);
+}
+
static int ovl_set_opaque_xerr(struct dentry *dentry, struct dentry *upper,
int xerr)
{
@@ -287,8 +293,7 @@ static struct dentry *ovl_clear_empty(struct dentry *dentry,
if (upper->d_parent->d_inode != udir)
goto out_unlock;
- opaquedir = ovl_create_real(wdir, ovl_lookup_temp(workdir),
- OVL_CATTR(stat.mode));
+ opaquedir = ovl_create_temp(workdir, OVL_CATTR(stat.mode));
err = PTR_ERR(opaquedir);
if (IS_ERR(opaquedir))
goto out_unlock;
@@ -388,7 +393,7 @@ static int ovl_create_over_whiteout(struct dentry *dentry, struct inode *inode,
if (IS_ERR(upper))
goto out_unlock;
- newdentry = ovl_create_real(wdir, ovl_lookup_temp(workdir), cattr);
+ newdentry = ovl_create_temp(workdir, cattr);
err = PTR_ERR(newdentry);
if (IS_ERR(newdentry))
goto out_dput;
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index 6bbde513e068..3f13d0965e03 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -346,7 +346,6 @@ static inline void ovl_copyattr(struct inode *from, struct inode *to)
/* dir.c */
extern const struct inode_operations ovl_dir_inode_operations;
-struct dentry *ovl_lookup_temp(struct dentry *workdir);
int ovl_cleanup_and_whiteout(struct dentry *workdir, struct inode *dir,
struct dentry *dentry);
struct ovl_cattr {
@@ -361,6 +360,7 @@ struct ovl_cattr {
struct dentry *ovl_create_real(struct inode *dir, struct dentry *newdentry,
struct ovl_cattr *attr);
int ovl_cleanup(struct inode *dir, struct dentry *dentry);
+struct dentry *ovl_create_temp(struct dentry *workdir, struct ovl_cattr *attr);
/* copy_up.c */
int ovl_copy_up(struct dentry *dentry);
--
2.14.3
next prev parent reply other threads:[~2018-05-29 14:41 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-29 14:41 [PATCH 00/11] overlayfs fixes Miklos Szeredi
2018-05-29 14:41 ` [PATCH 01/11] ovl: update documentation for unionmount-testsuite Miklos Szeredi
2018-05-29 14:41 ` [PATCH 02/11] ovl: remove WARN_ON() real inode attributes mismatch Miklos Szeredi
2018-05-29 14:41 ` [PATCH 03/11] ovl: strip debug argument from ovl_do_ helpers Miklos Szeredi
2018-05-29 14:41 ` [PATCH 04/11] ovl: struct cattr cleanups Miklos Szeredi
2018-05-29 14:41 ` [PATCH 05/11] ovl: return dentry from ovl_create_real() Miklos Szeredi
2018-05-29 15:24 ` Amir Goldstein
2018-05-30 8:28 ` Miklos Szeredi
2018-05-29 14:41 ` Miklos Szeredi [this message]
2018-05-29 14:41 ` [PATCH 07/11] ovl: make ovl_create_real() cope with vfs_mkdir() safely Miklos Szeredi
2018-05-29 15:29 ` Amir Goldstein
2018-05-30 8:18 ` Miklos Szeredi
2018-05-29 14:41 ` [PATCH 08/11] ovl: clean up copy-up error paths Miklos Szeredi
2018-05-29 14:41 ` [PATCH 09/11] vfs: factor out inode_insert5() Miklos Szeredi
2018-06-10 5:49 ` Al Viro
2018-06-10 6:02 ` Al Viro
2018-06-11 9:15 ` Miklos Szeredi
2018-06-11 11:32 ` Miklos Szeredi
2018-06-11 16:43 ` Al Viro
2018-06-12 12:38 ` Miklos Szeredi
2018-05-29 14:41 ` [PATCH 10/11] ovl: Pass argument to ovl_get_inode() in a structure Miklos Szeredi
2018-05-29 14:41 ` [PATCH 11/11] ovl: use inode_insert5() to hash a newly created inode Miklos Szeredi
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