diff options
author | Christian Brauner <brauner@kernel.org> | 2023-02-01 16:14:59 +0300 |
---|---|---|
committer | Christian Brauner (Microsoft) <brauner@kernel.org> | 2023-03-06 11:57:13 +0300 |
commit | d9f892b9bdc22b12bc960837a09f014d5a324975 (patch) | |
tree | b59aa0c6871a17c7028cb921badf7098225b3b06 /fs | |
parent | d549b741740e63e87e661754e2d1b336fdc51d50 (diff) | |
download | linux-d9f892b9bdc22b12bc960837a09f014d5a324975.tar.xz |
reiserfs: rework priv inode handling
Reiserfs is the only filesystem that removes IOP_XATTR without also
using a set of dedicated inode operations at the same time that nop all
xattr related inode operations. This means we need to have a IOP_XATTR
check in vfs_listxattr() instead of just being able to check for
->listxatt() being implemented.
Introduce a dedicated set of nop inode operations that are used when
IOP_XATTR is removed, allowing us to remove that check from
vfs_listxattr(). This in turn allows us to completely decouple POSIX ACLs from
IOP_XATTR.
Cc: reiserfs-devel@vger.kernel.org
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/reiserfs/file.c | 7 | ||||
-rw-r--r-- | fs/reiserfs/inode.c | 6 | ||||
-rw-r--r-- | fs/reiserfs/namei.c | 50 | ||||
-rw-r--r-- | fs/reiserfs/reiserfs.h | 2 | ||||
-rw-r--r-- | fs/reiserfs/xattr.c | 9 |
5 files changed, 59 insertions, 15 deletions
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index 467d13da198f..b54cc7048f02 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -261,3 +261,10 @@ const struct inode_operations reiserfs_file_inode_operations = { .fileattr_get = reiserfs_fileattr_get, .fileattr_set = reiserfs_fileattr_set, }; + +const struct inode_operations reiserfs_priv_file_inode_operations = { + .setattr = reiserfs_setattr, + .permission = reiserfs_permission, + .fileattr_get = reiserfs_fileattr_get, + .fileattr_set = reiserfs_fileattr_set, +}; diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index d54cab854f60..d8debbb6105f 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -2087,10 +2087,8 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th, * Mark it private if we're creating the privroot * or something under it. */ - if (IS_PRIVATE(dir) || dentry == REISERFS_SB(sb)->priv_root) { - inode->i_flags |= S_PRIVATE; - inode->i_opflags &= ~IOP_XATTR; - } + if (IS_PRIVATE(dir) || dentry == REISERFS_SB(sb)->priv_root) + reiserfs_init_priv_inode(inode); if (reiserfs_posixacl(inode->i_sb)) { reiserfs_write_unlock(inode->i_sb); diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c index 42d2c20e1345..52240cc891cf 100644 --- a/fs/reiserfs/namei.c +++ b/fs/reiserfs/namei.c @@ -378,13 +378,11 @@ static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry, /* * Propagate the private flag so we know we're - * in the priv tree. Also clear IOP_XATTR + * in the priv tree. Also clear xattr support * since we don't have xattrs on xattr files. */ - if (IS_PRIVATE(dir)) { - inode->i_flags |= S_PRIVATE; - inode->i_opflags &= ~IOP_XATTR; - } + if (IS_PRIVATE(dir)) + reiserfs_init_priv_inode(inode); } reiserfs_write_unlock(dir->i_sb); if (retval == IO_ERROR) { @@ -1649,6 +1647,48 @@ static int reiserfs_rename(struct mnt_idmap *idmap, return retval; } +static const struct inode_operations reiserfs_priv_dir_inode_operations = { + .create = reiserfs_create, + .lookup = reiserfs_lookup, + .link = reiserfs_link, + .unlink = reiserfs_unlink, + .symlink = reiserfs_symlink, + .mkdir = reiserfs_mkdir, + .rmdir = reiserfs_rmdir, + .mknod = reiserfs_mknod, + .rename = reiserfs_rename, + .setattr = reiserfs_setattr, + .permission = reiserfs_permission, + .fileattr_get = reiserfs_fileattr_get, + .fileattr_set = reiserfs_fileattr_set, +}; + +static const struct inode_operations reiserfs_priv_symlink_inode_operations = { + .get_link = page_get_link, + .setattr = reiserfs_setattr, + .permission = reiserfs_permission, +}; + +static const struct inode_operations reiserfs_priv_special_inode_operations = { + .setattr = reiserfs_setattr, + .permission = reiserfs_permission, +}; + +void reiserfs_init_priv_inode(struct inode *inode) +{ + inode->i_flags |= S_PRIVATE; + inode->i_opflags &= ~IOP_XATTR; + + if (S_ISREG(inode->i_mode)) + inode->i_op = &reiserfs_priv_file_inode_operations; + else if (S_ISDIR(inode->i_mode)) + inode->i_op = &reiserfs_priv_dir_inode_operations; + else if (S_ISLNK(inode->i_mode)) + inode->i_op = &reiserfs_priv_symlink_inode_operations; + else + inode->i_op = &reiserfs_priv_special_inode_operations; +} + /* directories can handle most operations... */ const struct inode_operations reiserfs_dir_inode_operations = { .create = reiserfs_create, diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h index 98e6f53c2fe0..1bccf6a2e908 100644 --- a/fs/reiserfs/reiserfs.h +++ b/fs/reiserfs/reiserfs.h @@ -3106,6 +3106,7 @@ int reiserfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, int __reiserfs_write_begin(struct page *page, unsigned from, unsigned len); /* namei.c */ +void reiserfs_init_priv_inode(struct inode *inode); void set_de_name_and_namelen(struct reiserfs_dir_entry *de); int search_by_entry_key(struct super_block *sb, const struct cpu_key *key, struct treepath *path, struct reiserfs_dir_entry *de); @@ -3175,6 +3176,7 @@ void reiserfs_unmap_buffer(struct buffer_head *); /* file.c */ extern const struct inode_operations reiserfs_file_inode_operations; +extern const struct inode_operations reiserfs_priv_file_inode_operations; extern const struct file_operations reiserfs_file_operations; extern const struct address_space_operations reiserfs_address_space_operations; diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index 354b74bc8072..651027967159 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -896,8 +896,7 @@ static int create_privroot(struct dentry *dentry) return -EOPNOTSUPP; } - d_inode(dentry)->i_flags |= S_PRIVATE; - d_inode(dentry)->i_opflags &= ~IOP_XATTR; + reiserfs_init_priv_inode(d_inode(dentry)); reiserfs_info(dentry->d_sb, "Created %s - reserved for xattr " "storage.\n", PRIVROOT_NAME); @@ -979,10 +978,8 @@ int reiserfs_lookup_privroot(struct super_block *s) if (!IS_ERR(dentry)) { REISERFS_SB(s)->priv_root = dentry; d_set_d_op(dentry, &xattr_lookup_poison_ops); - if (d_really_is_positive(dentry)) { - d_inode(dentry)->i_flags |= S_PRIVATE; - d_inode(dentry)->i_opflags &= ~IOP_XATTR; - } + if (d_really_is_positive(dentry)) + reiserfs_init_priv_inode(d_inode(dentry)); } else err = PTR_ERR(dentry); inode_unlock(d_inode(s->s_root)); |