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kernel/linux-imx6_3.14.28/fs/reiserfs/xattr_user.c 1.26 KB
6b13f685e   김민수   BSP 최초 추가
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  #include "reiserfs.h"
  #include <linux/errno.h>
  #include <linux/fs.h>
  #include <linux/pagemap.h>
  #include <linux/xattr.h>
  #include "xattr.h"
  #include <asm/uaccess.h>
  
  static int
  user_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
  	 int handler_flags)
  {
  
  	if (strlen(name) < sizeof(XATTR_USER_PREFIX))
  		return -EINVAL;
  	if (!reiserfs_xattrs_user(dentry->d_sb))
  		return -EOPNOTSUPP;
  	return reiserfs_xattr_get(dentry->d_inode, name, buffer, size);
  }
  
  static int
  user_set(struct dentry *dentry, const char *name, const void *buffer,
  	 size_t size, int flags, int handler_flags)
  {
  	if (strlen(name) < sizeof(XATTR_USER_PREFIX))
  		return -EINVAL;
  
  	if (!reiserfs_xattrs_user(dentry->d_sb))
  		return -EOPNOTSUPP;
  	return reiserfs_xattr_set(dentry->d_inode, name, buffer, size, flags);
  }
  
  static size_t user_list(struct dentry *dentry, char *list, size_t list_size,
  			const char *name, size_t name_len, int handler_flags)
  {
  	const size_t len = name_len + 1;
  
  	if (!reiserfs_xattrs_user(dentry->d_sb))
  		return 0;
  	if (list && len <= list_size) {
  		memcpy(list, name, name_len);
  		list[name_len] = '\0';
  	}
  	return len;
  }
  
  const struct xattr_handler reiserfs_xattr_user_handler = {
  	.prefix = XATTR_USER_PREFIX,
  	.get = user_get,
  	.set = user_set,
  	.list = user_list,
  };