sys/sys/acl.h

   1 /*-
   2  * Copyright (c) 1999, 2000 Robert N. M. Watson
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/sys/acl.h,v 1.8 2000/01/28 15:22:51 rwatson Exp $
  27  * $DragonFly: src/sys/sys/acl.h,v 1.5 2007/02/19 00:51:54 swildner Exp $
  28  */
  29
  30 /*
  31  * Userland/kernel interface for Access Control Lists.
  32  *
  33  * The POSIX.1e implementation page may be reached at:
  34  * http://www.watson.org/fbsd-hardening/posix1e/
  35  */
  36
  37 #ifndef _SYS_ACL_H_
  38 #define _SYS_ACL_H_
  39
  40 #ifndef _SYS_TYPES_H_
  41 #include <sys/types.h>
  42 #endif
  43
  44 /*
  45  * POSIX.1e ACL types and related constants
  46  */
  47
  48 #define ACL_MAX_ENTRIES         32 /* maximum entries in an ACL */
  49 #define _POSIX_ACL_PATH_MAX     ACL_MAX_ENTRIES
  50
  51 typedef int     acl_type_t;
  52 typedef int     acl_tag_t;
  53 typedef mode_t  acl_perm_t;
  54
  55 struct acl_entry {
  56         acl_tag_t       ae_tag;
  57         uid_t           ae_id;
  58         acl_perm_t      ae_perm;
  59 };
  60 typedef struct acl_entry        *acl_entry_t;
  61
  62 struct acl {
  63         int                     acl_cnt;
  64         struct acl_entry        acl_entry[ACL_MAX_ENTRIES];
  65 };
  66 typedef struct acl      *acl_t;
  67
  68 /*
  69  * Possible valid values for a_tag of acl_entry_t
  70  */
  71 #define ACL_USER_OBJ    0x00000001
  72 #define ACL_USER        0x00000002
  73 #define ACL_GROUP_OBJ   0x00000004
  74 #define ACL_GROUP       0x00000008
  75 #define ACL_MASK        0x00000010
  76 #define ACL_OTHER       0x00000020
  77 #define ACL_OTHER_OBJ   ACL_OTHER
  78
  79 /*
  80  * Possible valid values a_type_t arguments
  81  */
  82 #define ACL_TYPE_ACCESS         0x00000000
  83 #define ACL_TYPE_DEFAULT        0x00000001
  84 #define ACL_TYPE_AFS            0x00000002
  85 #define ACL_TYPE_CODA           0x00000003
  86 #define ACL_TYPE_NTFS           0x00000004
  87 #define ACL_TYPE_NWFS           0x00000005
  88
  89 /*
  90  * Possible flags in a_perm field
  91  */
  92 #define ACL_PERM_EXEC   0x0001
  93 #define ACL_PERM_WRITE  0x0002
  94 #define ACL_PERM_READ   0x0004
  95 #define ACL_PERM_NONE   0x0000
  96 #define ACL_PERM_BITS   (ACL_PERM_EXEC | ACL_PERM_WRITE | ACL_PERM_READ)
  97 #define ACL_POSIX1E_BITS        (ACL_PERM_EXEC | ACL_PERM_WRITE | ACL_PERM_READ)
  98
  99 #ifndef _KERNEL
 100
 101 /*
 102  * Syscall interface -- use the library calls instead as the syscalls
 103  * have strict acl entry ordering requirements
 104  */
 105 __BEGIN_DECLS
 106 int     __acl_aclcheck_fd(int, acl_type_t, struct acl *);
 107 int     __acl_aclcheck_file(const char *, acl_type_t, struct acl *);
 108 int     __acl_delete_fd(int, acl_type_t);
 109 int     __acl_delete_file(const char *, acl_type_t);
 110 int     __acl_get_fd(int, acl_type_t, struct acl *);
 111 int     __acl_get_file(const char *, acl_type_t, struct acl *);
 112 int     __acl_set_fd(int, acl_type_t, struct acl *);
 113 int     __acl_set_file(const char *, acl_type_t, struct acl *);
 114 __END_DECLS
 115
 116 /*
 117  * Supported POSIX.1e ACL manipulation and assignment/retrieval API
 118  * _np calls are local extensions that reflect an environment capable of
 119  * opening file descriptors of directories, and allowing additional
 120  * ACL type for different file systems (i.e., AFS)
 121  */
 122 __BEGIN_DECLS
 123 int     acl_delete_fd_np(int, acl_type_t);
 124 int     acl_delete_file_np(const char *, acl_type_t);
 125 int     acl_delete_def_file(const char *);
 126 acl_t   acl_dup(acl_t);
 127 int     acl_free(void *);
 128 acl_t   acl_from_text(const char *);
 129 acl_t   acl_get_fd(int);
 130 acl_t   acl_get_fd_np(int, acl_type_t);
 131 acl_t   acl_get_file(const char *, acl_type_t);
 132 acl_t   acl_init(int);
 133 int     acl_set_fd(int, acl_t);
 134 int     acl_set_fd_np(int, acl_t, acl_type_t);
 135 int     acl_set_file(const char *, acl_type_t, acl_t);
 136 char    *acl_to_text(acl_t, ssize_t *);
 137 int     acl_valid(acl_t);
 138 int     acl_valid_fd_np(int, acl_type_t, acl_t);
 139 int     acl_valid_file_np(const char *, acl_type_t, acl_t);
 140 __END_DECLS
 141
 142 #endif /* !_KERNEL */
 143
 144 #endif /* !_SYS_ACL_H_ */