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 122
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