FreeBSD/Linux Kernel Cross Reference
sys/sys/extattr.h

     /*      $NetBSD: extattr.h,v 1.11 2021/06/19 13:56:34 christos Exp $    */
     
     /*-
      * Copyright (c) 1999-2001 Robert N. M. Watson
      * All rights reserved.
      *
      * This software was developed by Robert Watson for the TrustedBSD Project.
      *
      * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * FreeBSD: src/sys/sys/extattr.h,v 1.12 2003/06/04 04:04:24 rwatson Exp
     */
    
    /*
     * Support for file system extended attributes.  Originally developed by
     * the TrustedBSD Project.  For a Linux-compatible interface to the same
     * subsystem, see <sys/xattr.h>.
     */
    
    #ifndef _SYS_EXTATTR_H_
    #define _SYS_EXTATTR_H_
    
    #include <sys/types.h>
    
    #define EXTATTR_NAMESPACE_EMPTY         0x00000000
    #define EXTATTR_NAMESPACE_EMPTY_STRING  "empty"
    #define EXTATTR_NAMESPACE_USER          0x00000001
    #define EXTATTR_NAMESPACE_USER_STRING   "user"
    #define EXTATTR_NAMESPACE_SYSTEM        0x00000002
    #define EXTATTR_NAMESPACE_SYSTEM_STRING "system"
    
    /*    
     * The following macro is designed to initialize an array that maps
     * extended-attribute namespace values to their names, e.g.:
     * 
     * char *extattr_namespace_names[] = EXTATTR_NAMESPACE_NAMES;
     */
    #define EXTATTR_NAMESPACE_NAMES { \
        EXTATTR_NAMESPACE_EMPTY_STRING, \
        EXTATTR_NAMESPACE_USER_STRING, \
        EXTATTR_NAMESPACE_SYSTEM_STRING, \
    }
    
    #define EXTATTR_MAXNAMELEN      KERNEL_NAME_MAX
    
    /* for sys_extattrctl */
    #define EXTATTR_CMD_START               0x00000001
    #define EXTATTR_CMD_STOP                0x00000002
    
    #ifdef _KERNEL
    
    #include <sys/param.h>
    
    /* VOP_LISTEXTATTR flags */
    #define EXTATTR_LIST_LENPREFIX  1       /* names with length prefix */
    
    struct lwp;
    struct vnode;
    int     extattr_check_cred(struct vnode *, int, kauth_cred_t, int);
    
    #else
    
    #include <sys/cdefs.h>
    __BEGIN_DECLS
    int     extattrctl(const char *_path, int _cmd, const char *_filename,
                int _attrnamespace, const char *_attrname);
    
    int     extattr_delete_fd(int _fd, int _attrnamespace, const char *_attrname);
    int     extattr_delete_file(const char *_path, int _attrnamespace,
                const char *_attrname);
    int     extattr_delete_link(const char *_path, int _attrnamespace,
                const char *_attrname);
    ssize_t extattr_get_fd(int _fd, int _attrnamespace, const char *_attrname,
                void *_data, size_t _nbytes);
    ssize_t extattr_get_file(const char *_path, int _attrnamespace,
                const char *_attrname, void *_data, size_t _nbytes);
    ssize_t extattr_get_link(const char *_path, int _attrnamespace,
                const char *_attrname, void *_data, size_t _nbytes);
    ssize_t extattr_list_fd(int _fd, int _attrnamespace, void *_data,
                size_t _nbytes);
   ssize_t extattr_list_file(const char *_path, int _attrnamespace, void *_data,
               size_t _nbytes);
   ssize_t extattr_list_link(const char *_path, int _attrnamespace, void *_data,
               size_t _nbytes);
   int     extattr_set_fd(int _fd, int _attrnamespace, const char *_attrname,
               const void *_data, size_t _nbytes);
   int     extattr_set_file(const char *_path, int _attrnamespace,
               const char *_attrname, const void *_data, size_t _nbytes);
   int     extattr_set_link(const char *_path, int _attrnamespace,
               const char *_attrname, const void *_data, size_t _nbytes);
   
   extern const int extattr_namespaces[];
   
   int     extattr_namespace_to_string(int, char **);
   int     extattr_string_to_namespace(const char *, int *);
   int     extattr_copy_fd(int _from_fd, int _to_fd, int _namespace);
   int     extattr_copy_file(const char *_from, const char *_to, int _namespace);
   int     extattr_copy_link(const char *_from, const char *_to, int _namespace);
   
   int     fcpxattr(int _from_fd, int _to_fd);
   int     cpxattr(const char *_from, const char *_to);
   int     lcpxattr(const char *_from, const char *_to);
   __END_DECLS
   
   #endif /* !_KERNEL */
   #endif /* !_SYS_EXTATTR_H_ */

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