151 lines
4.9 KiB
C
151 lines
4.9 KiB
C
/*-
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* Copyright (c) 1999-2001 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Userland/kernel interface for Access Control Lists.
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*
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* The POSIX.1e implementation page may be reached at:
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* http://www.watson.org/fbsd-hardening/posix1e/
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*/
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#ifndef _SYS_ACL_H
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#define _SYS_ACL_H
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/*
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* POSIX.1e ACL types and related constants.
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*/
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#define POSIX1E_ACL_ACCESS_EXTATTR_NAME "$posix1e.acl_access"
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#define POSIX1E_ACL_DEFAULT_EXTATTR_NAME "$posix1e.acl_default"
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#define ACL_MAX_ENTRIES 32 /* maximum entries in an ACL */
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#define _POSIX_ACL_PATH_MAX ACL_MAX_ENTRIES
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typedef int acl_type_t;
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typedef int acl_tag_t;
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typedef mode_t acl_perm_t;
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struct acl_entry {
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acl_tag_t ae_tag;
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uid_t ae_id;
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acl_perm_t ae_perm;
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};
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typedef struct acl_entry *acl_entry_t;
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struct acl {
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int acl_cnt;
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struct acl_entry acl_entry[ACL_MAX_ENTRIES];
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};
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typedef struct acl *acl_t;
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/*
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* Possible valid values for ae_tag field.
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*/
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#define ACL_USER_OBJ 0x00000001
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#define ACL_USER 0x00000002
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#define ACL_GROUP_OBJ 0x00000004
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#define ACL_GROUP 0x00000008
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#define ACL_MASK 0x00000010
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#define ACL_OTHER 0x00000020
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#define ACL_OTHER_OBJ ACL_OTHER
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/*
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* Possible valid values for acl_type_t arguments.
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*/
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#define ACL_TYPE_ACCESS 0x00000000
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#define ACL_TYPE_DEFAULT 0x00000001
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#define ACL_TYPE_AFS 0x00000002
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#define ACL_TYPE_CODA 0x00000003
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#define ACL_TYPE_NTFS 0x00000004
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#define ACL_TYPE_NWFS 0x00000005
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/*
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* Possible flags in ae_perm field.
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*/
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#define ACL_PERM_EXEC 0x0001
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#define ACL_PERM_WRITE 0x0002
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#define ACL_PERM_READ 0x0004
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#define ACL_PERM_NONE 0x0000
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#define ACL_PERM_BITS (ACL_PERM_EXEC | ACL_PERM_WRITE | ACL_PERM_READ)
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#define ACL_POSIX1E_BITS (ACL_PERM_EXEC | ACL_PERM_WRITE | ACL_PERM_READ)
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#ifdef _KERNEL
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/*
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* Storage for ACLs and support structures.
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*/
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#ifdef MALLOC_DECLARE
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MALLOC_DECLARE(M_ACL);
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#endif
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#else /* !_KERNEL */
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/*
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* Syscall interface -- use the library calls instead as the syscalls
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* have strict acl entry ordering requirements.
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*/
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__BEGIN_DECLS
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int __acl_aclcheck_fd(int _filedes, acl_type_t _type, struct acl *_aclp);
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int __acl_aclcheck_file(const char *_path, acl_type_t _type,
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struct acl *_aclp);
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int __acl_delete_fd(int _filedes, acl_type_t _type);
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int __acl_delete_file(const char *_path_p, acl_type_t _type);
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int __acl_get_fd(int _filedes, acl_type_t _type, struct acl *_aclp);
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int __acl_get_file(const char *_path, acl_type_t _type, struct acl *_aclp);
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int __acl_set_fd(int _filedes, acl_type_t _type, struct acl *_aclp);
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int __acl_set_file(const char *_path, acl_type_t _type, struct acl *_aclp);
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__END_DECLS
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/*
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* Supported POSIX.1e ACL manipulation and assignment/retrieval API
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* _np calls are local extensions that reflect an environment capable of
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* opening file descriptors of directories, and allowing additional
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* ACL type for different file systems (i.e., AFS).
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*/
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__BEGIN_DECLS
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int acl_delete_fd_np(int _filedes, acl_type_t _type);
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int acl_delete_file_np(const char *_path_p, acl_type_t _type);
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int acl_delete_def_file(const char *_path_p);
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acl_t acl_dup(acl_t _acl);
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int acl_free(void *_obj_p);
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acl_t acl_from_text(const char *_buf_p);
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acl_t acl_get_fd(int _fd);
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acl_t acl_get_fd_np(int fd, acl_type_t _type);
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acl_t acl_get_file(const char *_path_p, acl_type_t _type);
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acl_t acl_init(int _count);
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int acl_set_fd(int _fd, acl_t _acl);
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int acl_set_fd_np(int _fd, acl_t _acl, acl_type_t _type);
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int acl_set_file(const char *_path_p, acl_type_t _type, acl_t _acl);
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char *acl_to_text(acl_t _acl, ssize_t *_len_p);
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int acl_valid(acl_t _acl);
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int acl_valid_fd_np(int _fd, acl_type_t _type, acl_t _acl);
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int acl_valid_file_np(const char *_path_p, acl_type_t _type, acl_t _acl);
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__END_DECLS
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#endif /* !_KERNEL */
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#endif /* !_SYS_ACL_H */
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