00e5dc76b5
Copy xattr.c, xattr.h, xattr_hurd.c, xattr_security.c, xattr_trusted.c, and xattr_user.c from Linux v6.18 fs/ext4 directory. These files implement extended attribute support for ext4: - xattr.c/h: core xattr implementation - xattr_hurd: Hurd translator xattr handler - xattr_security: security label xattr handler - xattr_trusted: trusted xattr handler - xattr_user: user xattr handler Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com>
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/fs/ext4/xattr_user.c
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* Handler for extended user attributes.
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*
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* Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
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*/
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#include <linux/string.h>
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#include <linux/fs.h>
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#include "ext4_jbd2.h"
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#include "ext4.h"
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#include "xattr.h"
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static bool
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ext4_xattr_user_list(struct dentry *dentry)
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{
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return test_opt(dentry->d_sb, XATTR_USER);
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}
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static int
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ext4_xattr_user_get(const struct xattr_handler *handler,
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struct dentry *unused, struct inode *inode,
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const char *name, void *buffer, size_t size)
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{
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if (!test_opt(inode->i_sb, XATTR_USER))
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return -EOPNOTSUPP;
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return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER,
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name, buffer, size);
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}
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static int
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ext4_xattr_user_set(const struct xattr_handler *handler,
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struct mnt_idmap *idmap,
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struct dentry *unused, struct inode *inode,
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const char *name, const void *value,
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size_t size, int flags)
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{
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if (!test_opt(inode->i_sb, XATTR_USER))
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return -EOPNOTSUPP;
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return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER,
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name, value, size, flags);
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}
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const struct xattr_handler ext4_xattr_user_handler = {
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.prefix = XATTR_USER_PREFIX,
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.list = ext4_xattr_user_list,
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.get = ext4_xattr_user_get,
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.set = ext4_xattr_user_set,
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};
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