FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/freebsd/spl/sys/acl.h

     /*
      * CDDL HEADER START
      *
      * The contents of this file are subject to the terms of the
      * Common Development and Distribution License (the "License").
      * You may not use this file except in compliance with the License.
      *
      * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      * or https://opensource.org/licenses/CDDL-1.0.
     * See the License for the specific language governing permissions
     * and limitations under the License.
     *
     * When distributing Covered Code, include this CDDL HEADER in each
     * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     * If applicable, add the following below this CDDL HEADER, with the
     * fields enclosed by brackets "[]" replaced with your own identifying
     * information: Portions Copyright [yyyy] [name of copyright owner]
     *
     * CDDL HEADER END
     */
    /*
     * Copyright 2014 Garrett D'Amore <garrett@damore.org>
     *
     * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     * Use is subject to license terms.
     * Copyright 2017 RackTop Systems.
     */
    
    #ifndef _SYS_ACL_H
    #define _SYS_ACL_H
    
    #include <sys/types.h>
    #include <sys/acl_impl.h>
    
    /*
     * When compiling OpenSolaris kernel code, this file is included instead of the
     * FreeBSD one.  Include the original sys/acl.h as well.
     */
    #undef _SYS_ACL_H
    #include_next <sys/acl.h>
    #define _SYS_ACL_H
    
    #ifdef  __cplusplus
    extern "C" {
    #endif
    
    #define MAX_ACL_ENTRIES         (1024)  /* max entries of each type */
    typedef struct {
            int             a_type;         /* the type of ACL entry */
            uid_t           a_id;           /* the entry in -uid or gid */
            o_mode_t        a_perm;         /* the permission field */
    } aclent_t;
    
    typedef struct ace {
            uid_t           a_who;          /* uid or gid */
            uint32_t        a_access_mask;  /* read,write,... */
            uint16_t        a_flags;        /* see below */
            uint16_t        a_type;         /* allow or deny */
    } ace_t;
    
    /*
     * The following are Defined types for an aclent_t.
     */
    #define USER_OBJ        (0x01)          /* object owner */
    #define USER            (0x02)          /* additional users */
    #define GROUP_OBJ       (0x04)          /* owning group of the object */
    #define GROUP           (0x08)          /* additional groups */
    #define CLASS_OBJ       (0x10)          /* file group class and mask entry */
    #define OTHER_OBJ       (0x20)          /* other entry for the object */
    #define ACL_DEFAULT     (0x1000)        /* default flag */
    /* default object owner */
    #define DEF_USER_OBJ    (ACL_DEFAULT | USER_OBJ)
    /* default additional users */
    #define DEF_USER        (ACL_DEFAULT | USER)
    /* default owning group */
    #define DEF_GROUP_OBJ   (ACL_DEFAULT | GROUP_OBJ)
    /* default additional groups */
    #define DEF_GROUP       (ACL_DEFAULT | GROUP)
    /* default mask entry */
    #define DEF_CLASS_OBJ   (ACL_DEFAULT | CLASS_OBJ)
    /* default other entry */
    #define DEF_OTHER_OBJ   (ACL_DEFAULT | OTHER_OBJ)
    
    /*
     * The following are defined for ace_t.
     */
    #define ACE_READ_DATA           0x00000001
    #define ACE_LIST_DIRECTORY      0x00000001
    #define ACE_WRITE_DATA          0x00000002
    #define ACE_ADD_FILE            0x00000002
    #define ACE_APPEND_DATA         0x00000004
    #define ACE_ADD_SUBDIRECTORY    0x00000004
    #define ACE_READ_NAMED_ATTRS    0x00000008
    #define ACE_WRITE_NAMED_ATTRS   0x00000010
    #define ACE_EXECUTE             0x00000020
    #define ACE_DELETE_CHILD        0x00000040
    #define ACE_READ_ATTRIBUTES     0x00000080
    #define ACE_WRITE_ATTRIBUTES    0x00000100
    #define ACE_DELETE              0x00010000
   #define ACE_READ_ACL            0x00020000
   #define ACE_WRITE_ACL           0x00040000
   #define ACE_WRITE_OWNER         0x00080000
   #define ACE_SYNCHRONIZE         0x00100000
   
   #define ACE_FILE_INHERIT_ACE            0x0001
   #define ACE_DIRECTORY_INHERIT_ACE       0x0002
   #define ACE_NO_PROPAGATE_INHERIT_ACE    0x0004
   #define ACE_INHERIT_ONLY_ACE            0x0008
   #define ACE_SUCCESSFUL_ACCESS_ACE_FLAG  0x0010
   #define ACE_FAILED_ACCESS_ACE_FLAG      0x0020
   #define ACE_IDENTIFIER_GROUP            0x0040
   #define ACE_INHERITED_ACE               0x0080
   #define ACE_OWNER                       0x1000
   #define ACE_GROUP                       0x2000
   #define ACE_EVERYONE                    0x4000
   
   #define ACE_ACCESS_ALLOWED_ACE_TYPE     0x0000
   #define ACE_ACCESS_DENIED_ACE_TYPE      0x0001
   #define ACE_SYSTEM_AUDIT_ACE_TYPE       0x0002
   #define ACE_SYSTEM_ALARM_ACE_TYPE       0x0003
   
   #define ACL_AUTO_INHERIT                0x0001
   #define ACL_PROTECTED                   0x0002
   #define ACL_DEFAULTED                   0x0004
   #define ACL_FLAGS_ALL                   (ACL_AUTO_INHERIT|ACL_PROTECTED| \
       ACL_DEFAULTED)
   
   /*
    * These are only applicable in a CIFS context.
    */
   #define ACE_ACCESS_ALLOWED_COMPOUND_ACE_TYPE            0x04
   #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE              0x05
   #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE               0x06
   #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE                0x07
   #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE                0x08
   #define ACE_ACCESS_ALLOWED_CALLBACK_ACE_TYPE            0x09
   #define ACE_ACCESS_DENIED_CALLBACK_ACE_TYPE             0x0A
   #define ACE_ACCESS_ALLOWED_CALLBACK_OBJECT_ACE_TYPE     0x0B
   #define ACE_ACCESS_DENIED_CALLBACK_OBJECT_ACE_TYPE      0x0C
   #define ACE_SYSTEM_AUDIT_CALLBACK_ACE_TYPE              0x0D
   #define ACE_SYSTEM_ALARM_CALLBACK_ACE_TYPE              0x0E
   #define ACE_SYSTEM_AUDIT_CALLBACK_OBJECT_ACE_TYPE       0x0F
   #define ACE_SYSTEM_ALARM_CALLBACK_OBJECT_ACE_TYPE       0x10
   
   #define ACE_ALL_TYPES   0x001F
   
   typedef struct ace_object {
           uid_t           a_who;          /* uid or gid */
           uint32_t        a_access_mask;  /* read,write,... */
           uint16_t        a_flags;        /* see below */
           uint16_t        a_type;         /* allow or deny */
           uint8_t         a_obj_type[16]; /* obj type */
           uint8_t         a_inherit_obj_type[16];  /* inherit obj */
   } ace_object_t;
   
   #define ACE_ALL_PERMS   (ACE_READ_DATA|ACE_LIST_DIRECTORY|ACE_WRITE_DATA| \
       ACE_ADD_FILE|ACE_APPEND_DATA|ACE_ADD_SUBDIRECTORY|ACE_READ_NAMED_ATTRS| \
       ACE_WRITE_NAMED_ATTRS|ACE_EXECUTE|ACE_DELETE_CHILD|ACE_READ_ATTRIBUTES| \
       ACE_WRITE_ATTRIBUTES|ACE_DELETE|ACE_READ_ACL|ACE_WRITE_ACL| \
       ACE_WRITE_OWNER|ACE_SYNCHRONIZE)
   
   #define ACE_ALL_WRITE_PERMS (ACE_WRITE_DATA|ACE_APPEND_DATA| \
       ACE_WRITE_ATTRIBUTES|ACE_WRITE_NAMED_ATTRS|ACE_WRITE_ACL| \
       ACE_WRITE_OWNER|ACE_DELETE|ACE_DELETE_CHILD)
   
   #define ACE_READ_PERMS  (ACE_READ_DATA|ACE_READ_ACL|ACE_READ_ATTRIBUTES| \
       ACE_READ_NAMED_ATTRS)
   
   #define ACE_WRITE_PERMS (ACE_WRITE_DATA|ACE_APPEND_DATA|ACE_WRITE_ATTRIBUTES| \
       ACE_WRITE_NAMED_ATTRS)
   
   #define ACE_MODIFY_PERMS (ACE_READ_DATA|ACE_LIST_DIRECTORY|ACE_WRITE_DATA| \
       ACE_ADD_FILE|ACE_APPEND_DATA|ACE_ADD_SUBDIRECTORY|ACE_READ_NAMED_ATTRS| \
       ACE_WRITE_NAMED_ATTRS|ACE_EXECUTE|ACE_DELETE_CHILD|ACE_READ_ATTRIBUTES| \
       ACE_WRITE_ATTRIBUTES|ACE_DELETE|ACE_READ_ACL|ACE_SYNCHRONIZE)
   /*
    * The following flags are supported by both NFSv4 ACLs and ace_t.
    */
   #define ACE_NFSV4_SUP_FLAGS (ACE_FILE_INHERIT_ACE | \
       ACE_DIRECTORY_INHERIT_ACE | \
       ACE_NO_PROPAGATE_INHERIT_ACE | \
       ACE_INHERIT_ONLY_ACE | \
       ACE_INHERITED_ACE | \
       ACE_IDENTIFIER_GROUP)
   
   #define ACE_TYPE_FLAGS          (ACE_OWNER|ACE_GROUP|ACE_EVERYONE| \
       ACE_IDENTIFIER_GROUP)
   #define ACE_INHERIT_FLAGS       (ACE_FILE_INHERIT_ACE| ACL_INHERITED_ACE| \
       ACE_DIRECTORY_INHERIT_ACE|ACE_NO_PROPAGATE_INHERIT_ACE|ACE_INHERIT_ONLY_ACE)
   
   /* cmd args to acl(2) for aclent_t  */
   #define GETACL                  1
   #define SETACL                  2
   #define GETACLCNT               3
   
   /* cmd's to manipulate ace acls. */
   #define ACE_GETACL              4
   #define ACE_SETACL              5
   #define ACE_GETACLCNT           6
   
   /* minimal acl entries from GETACLCNT */
   #define MIN_ACL_ENTRIES         4
   
   extern void aces_from_acl(ace_t *aces, int *nentries, const struct acl *aclp);
   extern int acl_from_aces(struct acl *aclp, const ace_t *aces, int nentries);
   extern void ksort(caddr_t, int, int, int (*)(void *, void *));
   extern int cmp2acls(void *, void *);
   
   extern int acl(const char *path, int cmd, int cnt, void *buf);
   extern int facl(int fd, int cmd, int cnt, void *buf);
   
   #ifdef  __cplusplus
   }
   #endif
   
   #endif /* _SYS_ACL_H */

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