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-rw-r--r--fs/fuse/dir.c51
-rw-r--r--fs/nfs/nfs4xdr.c2
-rw-r--r--fs/nfsd/vfs.c5
-rw-r--r--fs/xfs/xfs_dinode.h3
-rw-r--r--fs/xfs/xfs_inode.c31
-rw-r--r--fs/xfs/xfs_log_recover.c13
6 files changed, 76 insertions, 29 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 0eda52738ec4..72a5d5b04494 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1223,30 +1223,46 @@ static int fuse_direntplus_link(struct file *file,
if (name.name[1] == '.' && name.len == 2)
return 0;
}
+
+ if (invalid_nodeid(o->nodeid))
+ return -EIO;
+ if (!fuse_valid_type(o->attr.mode))
+ return -EIO;
+
fc = get_fuse_conn(dir);
name.hash = full_name_hash(name.name, name.len);
dentry = d_lookup(parent, &name);
- if (dentry && dentry->d_inode) {
+ if (dentry) {
inode = dentry->d_inode;
- if (get_node_id(inode) == o->nodeid) {
+ if (!inode) {
+ d_drop(dentry);
+ } else if (get_node_id(inode) != o->nodeid ||
+ ((o->attr.mode ^ inode->i_mode) & S_IFMT)) {
+ err = d_invalidate(dentry);
+ if (err)
+ goto out;
+ } else if (is_bad_inode(inode)) {
+ err = -EIO;
+ goto out;
+ } else {
struct fuse_inode *fi;
fi = get_fuse_inode(inode);
spin_lock(&fc->lock);
fi->nlookup++;
spin_unlock(&fc->lock);
+ fuse_change_attributes(inode, &o->attr,
+ entry_attr_timeout(o),
+ attr_version);
+
/*
* The other branch to 'found' comes via fuse_iget()
* which bumps nlookup inside
*/
goto found;
}
- err = d_invalidate(dentry);
- if (err)
- goto out;
dput(dentry);
- dentry = NULL;
}
dentry = d_alloc(parent, &name);
@@ -1259,25 +1275,30 @@ static int fuse_direntplus_link(struct file *file,
if (!inode)
goto out;
- alias = d_materialise_unique(dentry, inode);
- err = PTR_ERR(alias);
- if (IS_ERR(alias))
- goto out;
+ if (S_ISDIR(inode->i_mode)) {
+ mutex_lock(&fc->inst_mutex);
+ alias = fuse_d_add_directory(dentry, inode);
+ mutex_unlock(&fc->inst_mutex);
+ err = PTR_ERR(alias);
+ if (IS_ERR(alias)) {
+ iput(inode);
+ goto out;
+ }
+ } else {
+ alias = d_splice_alias(inode, dentry);
+ }
+
if (alias) {
dput(dentry);
dentry = alias;
}
found:
- fuse_change_attributes(inode, &o->attr, entry_attr_timeout(o),
- attr_version);
-
fuse_change_entry_timeout(dentry, o);
err = 0;
out:
- if (dentry)
- dput(dentry);
+ dput(dentry);
return err;
}
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index c74d6168db99..3850b018815f 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1118,11 +1118,11 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
len, ((char *)p - (char *)q) + 4);
BUG();
}
- len = (char *)p - (char *)q - (bmval_len << 2);
*q++ = htonl(bmval0);
*q++ = htonl(bmval1);
if (bmval_len == 3)
*q++ = htonl(bmval2);
+ len = (char *)p - (char *)(q + 1);
*q = htonl(len);
/* out: */
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 8ff6a0019b0b..c827acb0e943 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -830,9 +830,10 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
flags = O_WRONLY|O_LARGEFILE;
}
*filp = dentry_open(&path, flags, current_cred());
- if (IS_ERR(*filp))
+ if (IS_ERR(*filp)) {
host_err = PTR_ERR(*filp);
- else {
+ *filp = NULL;
+ } else {
host_err = ima_file_check(*filp, may_flags);
if (may_flags & NFSD_MAY_64BIT_COOKIE)
diff --git a/fs/xfs/xfs_dinode.h b/fs/xfs/xfs_dinode.h
index 07d735a80a0f..e5869b50dc41 100644
--- a/fs/xfs/xfs_dinode.h
+++ b/fs/xfs/xfs_dinode.h
@@ -39,6 +39,9 @@ typedef struct xfs_timestamp {
* There is a very similar struct icdinode in xfs_inode which matches the
* layout of the first 96 bytes of this structure, but is kept in native
* format instead of big endian.
+ *
+ * Note: di_flushiter is only used by v1/2 inodes - it's effectively a zeroed
+ * padding field for v3 inodes.
*/
typedef struct xfs_dinode {
__be16 di_magic; /* inode magic # = XFS_DINODE_MAGIC */
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index b78481f99d9d..bb262c25c8de 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -896,7 +896,6 @@ xfs_dinode_to_disk(
to->di_projid_lo = cpu_to_be16(from->di_projid_lo);
to->di_projid_hi = cpu_to_be16(from->di_projid_hi);
memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad));
- to->di_flushiter = cpu_to_be16(from->di_flushiter);
to->di_atime.t_sec = cpu_to_be32(from->di_atime.t_sec);
to->di_atime.t_nsec = cpu_to_be32(from->di_atime.t_nsec);
to->di_mtime.t_sec = cpu_to_be32(from->di_mtime.t_sec);
@@ -924,6 +923,9 @@ xfs_dinode_to_disk(
to->di_lsn = cpu_to_be64(from->di_lsn);
memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2));
uuid_copy(&to->di_uuid, &from->di_uuid);
+ to->di_flushiter = 0;
+ } else {
+ to->di_flushiter = cpu_to_be16(from->di_flushiter);
}
}
@@ -1029,10 +1031,14 @@ xfs_dinode_calc_crc(
/*
* Read the disk inode attributes into the in-core inode structure.
*
- * If we are initialising a new inode and we are not utilising the
- * XFS_MOUNT_IKEEP inode cluster mode, we can simple build the new inode core
- * with a random generation number. If we are keeping inodes around, we need to
- * read the inode cluster to get the existing generation number off disk.
+ * For version 5 superblocks, if we are initialising a new inode and we are not
+ * utilising the XFS_MOUNT_IKEEP inode cluster mode, we can simple build the new
+ * inode core with a random generation number. If we are keeping inodes around,
+ * we need to read the inode cluster to get the existing generation number off
+ * disk. Further, if we are using version 4 superblocks (i.e. v1/v2 inode
+ * format) then log recovery is dependent on the di_flushiter field being
+ * initialised from the current on-disk value and hence we must also read the
+ * inode off disk.
*/
int
xfs_iread(
@@ -1054,6 +1060,7 @@ xfs_iread(
/* shortcut IO on inode allocation if possible */
if ((iget_flags & XFS_IGET_CREATE) &&
+ xfs_sb_version_hascrc(&mp->m_sb) &&
!(mp->m_flags & XFS_MOUNT_IKEEP)) {
/* initialise the on-disk inode core */
memset(&ip->i_d, 0, sizeof(ip->i_d));
@@ -2882,12 +2889,18 @@ xfs_iflush_int(
__func__, ip->i_ino, ip->i_d.di_forkoff, ip);
goto corrupt_out;
}
+
/*
- * bump the flush iteration count, used to detect flushes which
- * postdate a log record during recovery. This is redundant as we now
- * log every change and hence this can't happen. Still, it doesn't hurt.
+ * Inode item log recovery for v1/v2 inodes are dependent on the
+ * di_flushiter count for correct sequencing. We bump the flush
+ * iteration count so we can detect flushes which postdate a log record
+ * during recovery. This is redundant as we now log every change and
+ * hence this can't happen but we need to still do it to ensure
+ * backwards compatibility with old kernels that predate logging all
+ * inode changes.
*/
- ip->i_d.di_flushiter++;
+ if (ip->i_d.di_version < 3)
+ ip->i_d.di_flushiter++;
/*
* Copy the dirty parts of the inode into the on-disk
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 6fcc910a50b9..7681b19aa5dc 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -2592,8 +2592,16 @@ xlog_recover_inode_pass2(
goto error;
}
- /* Skip replay when the on disk inode is newer than the log one */
- if (dicp->di_flushiter < be16_to_cpu(dip->di_flushiter)) {
+ /*
+ * di_flushiter is only valid for v1/2 inodes. All changes for v3 inodes
+ * are transactional and if ordering is necessary we can determine that
+ * more accurately by the LSN field in the V3 inode core. Don't trust
+ * the inode versions we might be changing them here - use the
+ * superblock flag to determine whether we need to look at di_flushiter
+ * to skip replay when the on disk inode is newer than the log one
+ */
+ if (!xfs_sb_version_hascrc(&mp->m_sb) &&
+ dicp->di_flushiter < be16_to_cpu(dip->di_flushiter)) {
/*
* Deal with the wrap case, DI_MAX_FLUSH is less
* than smaller numbers
@@ -2608,6 +2616,7 @@ xlog_recover_inode_pass2(
goto error;
}
}
+
/* Take the opportunity to reset the flush iteration count */
dicp->di_flushiter = 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 06:17:17 +0100