root/fs/reiserfs/xattr_user.c

DEFINITIONS

1. user_get
2. user_set
3. user_del
4. user_list

#include <linux/reiserfs_fs.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/xattr.h>
#include <linux/reiserfs_xattr.h>
#include <asm/uaccess.h>

#ifdef CONFIG_REISERFS_FS_POSIX_ACL
# include <linux/reiserfs_acl.h>
#endif

static int
user_get(struct inode *inode, const char *name, void *buffer, size_t size)
{

        if (strlen(name) < sizeof(XATTR_USER_PREFIX))
                return -EINVAL;
        if (!reiserfs_xattrs_user(inode->i_sb))
                return -EOPNOTSUPP;
        return reiserfs_xattr_get(inode, name, buffer, size);
}

static int
user_set(struct inode *inode, const char *name, const void *buffer,
         size_t size, int flags)
{

        if (strlen(name) < sizeof(XATTR_USER_PREFIX))
                return -EINVAL;

        if (!reiserfs_xattrs_user(inode->i_sb))
                return -EOPNOTSUPP;
        return reiserfs_xattr_set(inode, name, buffer, size, flags);
}

static int user_del(struct inode *inode, const char *name)
{
        if (strlen(name) < sizeof(XATTR_USER_PREFIX))
                return -EINVAL;

        if (!reiserfs_xattrs_user(inode->i_sb))
                return -EOPNOTSUPP;
        return 0;
}

static int
user_list(struct inode *inode, const char *name, int namelen, char *out)
{
        int len = namelen;
        if (!reiserfs_xattrs_user(inode->i_sb))
                return 0;

        if (out)
                memcpy(out, name, len);

        return len;
}

struct reiserfs_xattr_handler user_handler = {
        .prefix = XATTR_USER_PREFIX,
        .get = user_get,
        .set = user_set,
        .del = user_del,
        .list = user_list,
};