From: Al Viro <viro@zeniv.linux.org.uk>
To: linux-fsdevel@vger.kernel.org
Cc: agruenba@redhat.com, amir73il@gmail.com, brauner@kernel.org,
ceph-devel@vger.kernel.org, dhowells@redhat.com,
hubcap@omnibond.com, jack@suse.cz, krisman@kernel.org,
linux-nfs@vger.kernel.org, miklos@szeredi.hu,
torvalds@linux-foundation.org
Subject: [PATCH 13/20] vfat_revalidate{,_ci}(): use stable parent inode passed by caller
Date: Fri, 10 Jan 2025 02:42:56 +0000 [thread overview]
Message-ID: <20250110024303.4157645-13-viro@zeniv.linux.org.uk> (raw)
In-Reply-To: <20250110024303.4157645-1-viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/fat/namei_vfat.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index f9cbd5c6f932..926c26e90ef8 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -43,14 +43,9 @@ static inline void vfat_d_version_set(struct dentry *dentry,
* If it happened, the negative dentry isn't actually negative
* anymore. So, drop it.
*/
-static int vfat_revalidate_shortname(struct dentry *dentry)
+static bool vfat_revalidate_shortname(struct dentry *dentry, struct inode *dir)
{
- int ret = 1;
- spin_lock(&dentry->d_lock);
- if (!inode_eq_iversion(d_inode(dentry->d_parent), vfat_d_version(dentry)))
- ret = 0;
- spin_unlock(&dentry->d_lock);
- return ret;
+ return inode_eq_iversion(dir, vfat_d_version(dentry));
}
static int vfat_revalidate(struct inode *dir, const struct qstr *name,
@@ -62,7 +57,7 @@ static int vfat_revalidate(struct inode *dir, const struct qstr *name,
/* This is not negative dentry. Always valid. */
if (d_really_is_positive(dentry))
return 1;
- return vfat_revalidate_shortname(dentry);
+ return vfat_revalidate_shortname(dentry, dir);
}
static int vfat_revalidate_ci(struct inode *dir, const struct qstr *name,
@@ -99,7 +94,7 @@ static int vfat_revalidate_ci(struct inode *dir, const struct qstr *name,
if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
return 0;
- return vfat_revalidate_shortname(dentry);
+ return vfat_revalidate_shortname(dentry, dir);
}
/* returns the length of a struct qstr, ignoring trailing dots */
--
2.39.5
next prev parent reply other threads:[~2025-01-10 2:43 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-10 2:38 [PATCHES][RFC][CFT] ->d_revalidate() calling conventions changes (->d_parent/->d_name stability problems) Al Viro
2025-01-10 2:42 ` [PATCH 01/20] make sure that DNAME_INLINE_LEN is a multiple of word size Al Viro
2025-01-10 2:42 ` [PATCH 02/20] dcache: back inline names with a struct-wrapped array of unsigned long Al Viro
2025-01-10 9:35 ` Jan Kara
2025-01-10 16:24 ` Al Viro
2025-01-10 2:42 ` [PATCH 03/20] make take_dentry_name_snapshot() lockless Al Viro
2025-01-10 9:45 ` Jan Kara
2025-01-10 2:42 ` [PATCH 04/20] dissolve external_name.u into separate members Al Viro
2025-01-10 7:34 ` David Howells
2025-01-10 16:46 ` Al Viro
2025-01-10 2:42 ` [PATCH 05/20] ext4 fast_commit: make use of name_snapshot primitives Al Viro
2025-01-10 9:15 ` Jan Kara
2025-01-10 2:42 ` [PATCH 06/20] generic_ci_d_compare(): use shortname_storage Al Viro
2025-01-10 2:42 ` [PATCH 07/20] Pass parent directory inode and expected name to ->d_revalidate() Al Viro
2025-01-10 2:42 ` [PATCH 08/20] afs_d_revalidate(): use stable name and parent inode passed by caller Al Viro
2025-01-10 2:42 ` [PATCH 09/20] ceph_d_revalidate(): use stable " Al Viro
2025-01-10 19:45 ` Viacheslav Dubeyko
2025-01-10 2:42 ` [PATCH 10/20] ceph_d_revalidate(): propagate stable name down into request enconding Al Viro
2025-01-10 2:42 ` [PATCH 11/20] fscrypt_d_revalidate(): use stable parent inode passed by caller Al Viro
2025-01-10 2:42 ` [PATCH 12/20] exfat_d_revalidate(): " Al Viro
2025-01-10 2:42 ` Al Viro [this message]
2025-01-10 2:42 ` [PATCH 14/20] fuse_dentry_revalidate(): use stable parent inode and name " Al Viro
2025-01-10 2:42 ` [PATCH 15/20] gfs2_drevalidate(): " Al Viro
2025-01-10 19:20 ` Andreas Grünbacher
2025-01-10 2:42 ` [PATCH 16/20] nfs{,4}_lookup_validate(): use stable parent inode " Al Viro
2025-01-10 2:43 ` [PATCH 17/20] nfs: fix ->d_revalidate() UAF on ->d_name accesses Al Viro
2025-01-10 2:43 ` [PATCH 18/20] ocfs2_dentry_revalidate(): use stable parent inode and name passed by caller Al Viro
2025-01-10 9:54 ` Jan Kara
2025-01-10 2:43 ` [PATCH 19/20] orangefs_d_revalidate(): " Al Viro
2025-01-10 3:06 ` Linus Torvalds
2025-01-10 2:43 ` [PATCH 20/20] 9p: fix ->rename_sem exclusion Al Viro
2025-01-10 3:11 ` Linus Torvalds
2025-01-10 5:53 ` Al Viro
2025-01-10 9:21 ` [PATCH 01/20] make sure that DNAME_INLINE_LEN is a multiple of word size Jan Kara
2025-01-16 5:21 ` [PATCHES v2][RFC][CFT] ->d_revalidate() calling conventions changes (->d_parent/->d_name stability problems) Al Viro
2025-01-16 5:22 ` [PATCH v2 01/20] make sure that DNAME_INLINE_LEN is a multiple of word size Al Viro
2025-01-16 5:22 ` [PATCH v2 02/20] dcache: back inline names with a struct-wrapped array of unsigned long Al Viro
2025-01-16 5:23 ` [PATCH v2 03/20] make take_dentry_name_snapshot() lockless Al Viro
2025-01-16 5:23 ` [PATCH v2 04/20] dissolve external_name.u into separate members Al Viro
2025-01-16 10:06 ` Jan Kara
2025-01-16 5:23 ` [PATCH v2 05/20] ext4 fast_commit: make use of name_snapshot primitives Al Viro
2025-01-16 5:23 ` [PATCH v2 06/20] generic_ci_d_compare(): use shortname_storage Al Viro
2025-01-16 15:38 ` Gabriel Krisman Bertazi
2025-01-16 15:46 ` Al Viro
2025-01-16 15:53 ` Gabriel Krisman Bertazi
2025-01-16 5:23 ` [PATCH v2 07/20] Pass parent directory inode and expected name to ->d_revalidate() Al Viro
2025-01-16 15:15 ` Gabriel Krisman Bertazi
2025-01-17 18:55 ` Jeff Layton
2025-01-17 19:00 ` Al Viro
2025-01-16 5:23 ` [PATCH v2 08/20] afs_d_revalidate(): use stable name and parent inode passed by caller Al Viro
2025-01-22 20:27 ` David Howells
2025-01-22 21:01 ` Al Viro
2025-01-22 21:24 ` Al Viro
2025-01-22 21:55 ` David Howells
2025-01-16 5:23 ` [PATCH v2 09/20] ceph_d_revalidate(): use stable " Al Viro
2025-01-17 18:35 ` Jeff Layton
2025-01-16 5:23 ` [PATCH v2 10/20] ceph_d_revalidate(): propagate stable name down into request enconding Al Viro
2025-01-17 18:35 ` Jeff Layton
2025-01-16 5:23 ` [PATCH v2 11/20] fscrypt_d_revalidate(): use stable parent inode passed by caller Al Viro
2025-01-17 15:20 ` Jeff Layton
2025-01-16 5:23 ` [PATCH v2 12/20] exfat_d_revalidate(): " Al Viro
2025-01-16 5:23 ` [PATCH v2 13/20] vfat_revalidate{,_ci}(): " Al Viro
2025-01-17 15:22 ` Jeff Layton
2025-01-16 5:23 ` [PATCH v2 14/20] fuse_dentry_revalidate(): use stable parent inode and name " Al Viro
2025-01-17 15:18 ` Jeff Layton
2025-01-16 5:23 ` [PATCH v2 15/20] gfs2_drevalidate(): " Al Viro
2025-01-16 5:23 ` [PATCH v2 16/20] nfs{,4}_lookup_validate(): use stable parent inode " Al Viro
2025-01-17 14:05 ` Jeff Layton
2025-01-16 5:23 ` [PATCH v2 17/20] nfs: fix ->d_revalidate() UAF on ->d_name accesses Al Viro
2025-01-17 15:12 ` Jeff Layton
2025-01-16 5:23 ` [PATCH v2 18/20] ocfs2_dentry_revalidate(): use stable parent inode and name passed by caller Al Viro
2025-01-16 5:23 ` [PATCH v2 19/20] orangefs_d_revalidate(): " Al Viro
2025-01-16 5:23 ` [PATCH v2 20/20] 9p: fix ->rename_sem exclusion Al Viro
2025-01-23 1:45 ` [PATCHES v3][RFC][CFT] ->d_revalidate() calling conventions changes (->d_parent/->d_name stability problems) Al Viro
2025-01-23 1:46 ` [PATCH v3 01/20] make sure that DNAME_INLINE_LEN is a multiple of word size Al Viro
2025-01-23 1:46 ` [PATCH v3 02/20] dcache: back inline names with a struct-wrapped array of unsigned long Al Viro
2025-01-23 1:46 ` [PATCH v3 03/20] make take_dentry_name_snapshot() lockless Al Viro
2025-01-23 1:46 ` [PATCH v3 04/20] dissolve external_name.u into separate members Al Viro
2025-01-23 1:46 ` [PATCH v3 05/20] ext4 fast_commit: make use of name_snapshot primitives Al Viro
2025-01-23 1:46 ` [PATCH v3 06/20] generic_ci_d_compare(): use shortname_storage Al Viro
2025-01-23 1:46 ` [PATCH v3 07/20] Pass parent directory inode and expected name to ->d_revalidate() Al Viro
2025-01-23 1:46 ` [PATCH v3 08/20] afs_d_revalidate(): use stable name and parent inode passed by caller Al Viro
2025-01-23 1:46 ` [PATCH v3 09/20] ceph_d_revalidate(): use stable " Al Viro
2025-01-23 1:46 ` [PATCH v3 10/20] ceph_d_revalidate(): propagate stable name down into request encoding Al Viro
2025-01-23 1:46 ` [PATCH v3 11/20] fscrypt_d_revalidate(): use stable parent inode passed by caller Al Viro
2025-01-23 1:46 ` [PATCH v3 12/20] exfat_d_revalidate(): " Al Viro
2025-01-23 1:46 ` [PATCH v3 13/20] vfat_revalidate{,_ci}(): " Al Viro
2025-01-23 1:46 ` [PATCH v3 14/20] fuse_dentry_revalidate(): use stable parent inode and name " Al Viro
2025-01-23 10:51 ` Miklos Szeredi
2025-01-23 1:46 ` [PATCH v3 15/20] gfs2_drevalidate(): " Al Viro
2025-01-23 1:46 ` [PATCH v3 16/20] nfs{,4}_lookup_validate(): use stable parent inode " Al Viro
2025-01-23 1:46 ` [PATCH v3 17/20] nfs: fix ->d_revalidate() UAF on ->d_name accesses Al Viro
2025-01-23 1:46 ` [PATCH v3 18/20] ocfs2_dentry_revalidate(): use stable parent inode and name passed by caller Al Viro
2025-01-23 1:46 ` [PATCH v3 19/20] orangefs_d_revalidate(): " Al Viro
2025-01-25 16:25 ` Mike Marshall
2025-01-23 1:46 ` [PATCH v3 20/20] 9p: fix ->rename_sem exclusion Al Viro
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