1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/**
* @file
* Protected interface for attribute differences.
*
* @author Jeremy A. Mowery jmowery@tresys.com
* @author Jason Tang jtang@tresys.com
*
* Copyright (C) 2006-2007 Tresys Technology, LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef POLDIFF_ATTRIB_INTERNAL_H
#define POLDIFF_ATTRIB_INTERNAL_H
#ifdef __cplusplus
extern "C"
{
#endif
typedef struct poldiff_attrib_summary poldiff_attrib_summary_t;
/**
* Allocate and return a new poldiff_attrib_summary_t object.
*
* @return A new attrib summary. The caller must call attrib_destroy()
* afterwards. On error, return NULL and set errno.
*/
poldiff_attrib_summary_t *attrib_summary_create(void);
/**
* Deallocate all space associated with a poldiff_attrib_summary_t
* object, including the pointer itself. If the pointer is already
* NULL then do nothing.
*
* @param us Reference to a attrib summary to destroy. The pointer
* will be set to NULL afterwards.
*/
void attrib_summary_destroy(poldiff_attrib_summary_t ** us);
/**
* Reset the state of all attribute differences.
* @param diff The policy difference structure containing the differences
* to reset.
* @return 0 on success and < 0 on error; if the call fails,
* errno will be set and the user should call poldiff_destroy() on diff.
*/
int attrib_reset(poldiff_t * diff);
/**
* Get a vector of all attribs from the given policy, sorted by name.
*
* @param diff Policy diff error handler.
* @param policy The policy from which to get the items.
*
* @return A newly allocated vector of all attribs. The caller is
* responsible for calling apol_vector_destroy() afterwards. On
* error, return NULL and set errno.
*/
apol_vector_t *attrib_get_items(poldiff_t * diff, const apol_policy_t * policy);
/**
* Compare two qpol_attrib_t objects, determining if they have the same
* name or not.
*
* @param x The attrib from the original policy.
* @param y The attrib from the modified policy.
* @param diff The policy difference structure associated with both
* policies.
*
* @return < 0, 0, or > 0 if attrib x is respectively less than, equal
* to, or greater than attrib y.
*/
int attrib_comp(const void *x, const void *y, const poldiff_t * diff);
/**
* Create, initialize, and insert a new semantic difference entry for
* a attrib.
*
* @param diff The policy difference structure to which to add the entry.
* @param form The form of the difference.
* @param item Item for which the entry is being created.
*
* @return 0 on success and < 0 on error; if the call fails, set errno
* and leave the policy difference structure unchanged.
*/
int attrib_new_diff(poldiff_t * diff, poldiff_form_e form, const void *item);
/**
* Compute the semantic difference of two attribs for which the compare
* callback returns 0. If a difference is found then allocate,
* initialize, and insert a new semantic difference entry for that
* attrib.
*
* @param diff The policy difference structure associated with both
* attribs and to which to add an entry if needed.
* @param x The attrib from the original policy.
* @param y The attrib from the modified policy.
*
* @return 0 on success and < 0 on error; if the call fails, set errno
* and leave the policy difference structure unchanged.
*/
int attrib_deep_diff(poldiff_t * diff, const void *x, const void *y);
#ifdef __cplusplus
}
#endif
#endif /* POLDIFF_ATTRIB_INTERNAL_H */
|
