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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /fs/reiserfs/xattr.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fs/reiserfs/xattr.h')
-rw-r--r--fs/reiserfs/xattr.h117
1 files changed, 117 insertions, 0 deletions
diff --git a/fs/reiserfs/xattr.h b/fs/reiserfs/xattr.h
new file mode 100644
index 0000000000..5868a4e990
--- /dev/null
+++ b/fs/reiserfs/xattr.h
@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/reiserfs_xattr.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/rwsem.h>
+#include <linux/xattr.h>
+
+struct inode;
+struct dentry;
+struct iattr;
+struct super_block;
+
+int reiserfs_xattr_register_handlers(void) __init;
+void reiserfs_xattr_unregister_handlers(void);
+int reiserfs_xattr_init(struct super_block *sb, int mount_flags);
+int reiserfs_lookup_privroot(struct super_block *sb);
+int reiserfs_delete_xattrs(struct inode *inode);
+int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs);
+int reiserfs_permission(struct mnt_idmap *idmap,
+ struct inode *inode, int mask);
+
+#ifdef CONFIG_REISERFS_FS_XATTR
+#define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
+ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
+
+int reiserfs_xattr_get(struct inode *, const char *, void *, size_t);
+int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int);
+int reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *,
+ struct inode *, const char *, const void *,
+ size_t, int);
+
+extern const struct xattr_handler reiserfs_xattr_user_handler;
+extern const struct xattr_handler reiserfs_xattr_trusted_handler;
+extern const struct xattr_handler reiserfs_xattr_security_handler;
+#ifdef CONFIG_REISERFS_FS_SECURITY
+int reiserfs_security_init(struct inode *dir, struct inode *inode,
+ const struct qstr *qstr,
+ struct reiserfs_security_handle *sec);
+int reiserfs_security_write(struct reiserfs_transaction_handle *th,
+ struct inode *inode,
+ struct reiserfs_security_handle *sec);
+void reiserfs_security_free(struct reiserfs_security_handle *sec);
+#endif
+
+static inline int reiserfs_xattrs_initialized(struct super_block *sb)
+{
+ return REISERFS_SB(sb)->priv_root && REISERFS_SB(sb)->xattr_root;
+}
+
+#define xattr_size(size) ((size) + sizeof(struct reiserfs_xattr_header))
+static inline loff_t reiserfs_xattr_nblocks(struct inode *inode, loff_t size)
+{
+ loff_t ret = 0;
+ if (reiserfs_file_data_log(inode)) {
+ ret = _ROUND_UP(xattr_size(size), inode->i_sb->s_blocksize);
+ ret >>= inode->i_sb->s_blocksize_bits;
+ }
+ return ret;
+}
+
+/*
+ * We may have to create up to 3 objects: xattr root, xattr dir, xattr file.
+ * Let's try to be smart about it.
+ * xattr root: We cache it. If it's not cached, we may need to create it.
+ * xattr dir: If anything has been loaded for this inode, we can set a flag
+ * saying so.
+ * xattr file: Since we don't cache xattrs, we can't tell. We always include
+ * blocks for it.
+ *
+ * However, since root and dir can be created between calls - YOU MUST SAVE
+ * THIS VALUE.
+ */
+static inline size_t reiserfs_xattr_jcreate_nblocks(struct inode *inode)
+{
+ size_t nblocks = JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
+
+ if ((REISERFS_I(inode)->i_flags & i_has_xattr_dir) == 0) {
+ nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
+ if (d_really_is_negative(REISERFS_SB(inode->i_sb)->xattr_root))
+ nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
+ }
+
+ return nblocks;
+}
+
+static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
+{
+ init_rwsem(&REISERFS_I(inode)->i_xattr_sem);
+}
+
+#else
+
+#define reiserfs_listxattr NULL
+
+static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
+{
+}
+#endif /* CONFIG_REISERFS_FS_XATTR */
+
+#ifndef CONFIG_REISERFS_FS_SECURITY
+static inline int reiserfs_security_init(struct inode *dir,
+ struct inode *inode,
+ const struct qstr *qstr,
+ struct reiserfs_security_handle *sec)
+{
+ return 0;
+}
+static inline int
+reiserfs_security_write(struct reiserfs_transaction_handle *th,
+ struct inode *inode,
+ struct reiserfs_security_handle *sec)
+{
+ return 0;
+}
+static inline void reiserfs_security_free(struct reiserfs_security_handle *sec)
+{}
+#endif