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1 office 1 /*
2 * netlink/netlink-types.h Netlink Types
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
7 * of the License.
8 *
9 * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
10 */
11  
12 #ifndef __NETLINK_TYPES_H_
13 #define __NETLINK_TYPES_H_
14  
15 #include <stdio.h>
16  
17 /**
18 * Dumping types (dp_type)
19 * @ingroup utils
20 */
21 enum nl_dump_type {
22 NL_DUMP_LINE, /**< Dump object briefly on one line */
23 NL_DUMP_DETAILS, /**< Dump all attributes but no statistics */
24 NL_DUMP_STATS, /**< Dump all attributes including statistics */
25 NL_DUMP_ENV, /**< Dump all attribtues as env variables */
26 __NL_DUMP_MAX,
27 };
28 #define NL_DUMP_MAX (__NL_DUMP_MAX - 1)
29  
30 /**
31 * Dumping parameters
32 * @ingroup utils
33 */
34 struct nl_dump_params
35 {
36 /**
37 * Specifies the type of dump that is requested.
38 */
39 enum nl_dump_type dp_type;
40  
41 /**
42 * Specifies the number of whitespaces to be put in front
43 * of every new line (indentation).
44 */
45 int dp_prefix;
46  
47 /**
48 * Causes the cache index to be printed for each element.
49 */
50 int dp_print_index;
51  
52 /**
53 * Causes each element to be prefixed with the message type.
54 */
55 int dp_dump_msgtype;
56  
57 /**
58 * A callback invoked for output
59 *
60 * Passed arguments are:
61 * - dumping parameters
62 * - string to append to the output
63 */
64 void (*dp_cb)(struct nl_dump_params *, char *);
65  
66 /**
67 * A callback invoked for every new line, can be used to
68 * customize the indentation.
69 *
70 * Passed arguments are:
71 * - dumping parameters
72 * - line number starting from 0
73 */
74 void (*dp_nl_cb)(struct nl_dump_params *, int);
75  
76 /**
77 * User data pointer, can be used to pass data to callbacks.
78 */
79 void *dp_data;
80  
81 /**
82 * File descriptor the dumping output should go to
83 */
84 FILE * dp_fd;
85  
86 /**
87 * Alternatively the output may be redirected into a buffer
88 */
89 char * dp_buf;
90  
91 /**
92 * Length of the buffer dp_buf
93 */
94 size_t dp_buflen;
95  
96 /**
97 * PRIVATE
98 * Set if a dump was performed prior to the actual dump handler.
99 */
100 int dp_pre_dump;
101  
102 /**
103 * PRIVATE
104 * Owned by the current caller
105 */
106 int dp_ivar;
107  
108 unsigned int dp_line;
109 };
110  
111 #ifndef __GNUC__
112 #define __extension__
113 #endif
114  
115 #define min_t(type,x,y) \
116 __extension__({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
117 #define max_t(type,x,y) \
118 __extension__({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
119  
120  
121 #endif