OpenWrt – Blame information for rev 1
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1 | office | 1 | /* |
2 | * lib/genl/family.c Generic Netlink Family |
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3 | * |
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4 | * This library is free software; you can redistribute it and/or |
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5 | * modify it under the terms of the GNU Lesser General Public |
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6 | * License as published by the Free Software Foundation version 2.1 |
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7 | * of the License. |
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8 | * |
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9 | * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch> |
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10 | */ |
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11 | |||
12 | /** |
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13 | * @ingroup genl |
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14 | * @defgroup genl_family Generic Netlink Family |
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15 | * @brief |
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16 | * |
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17 | * @{ |
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18 | */ |
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19 | |||
20 | #include <netlink-generic.h> |
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21 | #include <netlink/netlink.h> |
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22 | #include <netlink/genl/genl.h> |
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23 | #include <netlink/genl/family.h> |
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24 | #include <netlink/utils.h> |
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25 | |||
26 | struct nl_object_ops genl_family_ops; |
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27 | /** @endcond */ |
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28 | |||
29 | static void family_constructor(struct nl_object *c) |
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30 | { |
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31 | struct genl_family *family = (struct genl_family *) c; |
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32 | |||
33 | nl_init_list_head(&family->gf_ops); |
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34 | nl_init_list_head(&family->gf_mc_grps); |
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35 | } |
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36 | |||
37 | static void family_free_data(struct nl_object *c) |
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38 | { |
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39 | struct genl_family *family = (struct genl_family *) c; |
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40 | struct genl_family_op *ops, *tmp; |
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41 | struct genl_family_grp *grp, *t_grp; |
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42 | |||
43 | if (family == NULL) |
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44 | return; |
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45 | |||
46 | nl_list_for_each_entry_safe(ops, tmp, &family->gf_ops, o_list) { |
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47 | nl_list_del(&ops->o_list); |
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48 | free(ops); |
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49 | } |
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50 | |||
51 | nl_list_for_each_entry_safe(grp, t_grp, &family->gf_mc_grps, list) { |
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52 | nl_list_del(&grp->list); |
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53 | free(grp); |
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54 | } |
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55 | |||
56 | } |
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57 | |||
58 | static int family_clone(struct nl_object *_dst, struct nl_object *_src) |
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59 | { |
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60 | struct genl_family *dst = nl_object_priv(_dst); |
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61 | struct genl_family *src = nl_object_priv(_src); |
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62 | struct genl_family_op *ops; |
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63 | struct genl_family_grp *grp; |
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64 | int err; |
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65 | |||
66 | nl_list_for_each_entry(ops, &src->gf_ops, o_list) { |
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67 | err = genl_family_add_op(dst, ops->o_id, ops->o_flags); |
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68 | if (err < 0) |
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69 | return err; |
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70 | } |
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71 | |||
72 | nl_list_for_each_entry(grp, &src->gf_mc_grps, list) { |
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73 | err = genl_family_add_grp(dst, grp->id, grp->name); |
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74 | if (err < 0) |
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75 | return err; |
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76 | } |
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77 | |||
78 | |||
79 | return 0; |
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80 | } |
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81 | |||
82 | static int family_compare(struct nl_object *_a, struct nl_object *_b, |
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83 | uint32_t attrs, int flags) |
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84 | { |
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85 | struct genl_family *a = (struct genl_family *) _a; |
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86 | struct genl_family *b = (struct genl_family *) _b; |
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87 | int diff = 0; |
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88 | |||
89 | #define FAM_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, FAMILY_ATTR_##ATTR, a, b, EXPR) |
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90 | |||
91 | diff |= FAM_DIFF(ID, a->gf_id != b->gf_id); |
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92 | diff |= FAM_DIFF(VERSION, a->gf_version != b->gf_version); |
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93 | diff |= FAM_DIFF(HDRSIZE, a->gf_hdrsize != b->gf_hdrsize); |
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94 | diff |= FAM_DIFF(MAXATTR, a->gf_maxattr != b->gf_maxattr); |
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95 | diff |= FAM_DIFF(NAME, strcmp(a->gf_name, b->gf_name)); |
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96 | |||
97 | #undef FAM_DIFF |
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98 | |||
99 | return diff; |
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100 | } |
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101 | |||
102 | |||
103 | /** |
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104 | * @name Family Object |
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105 | * @{ |
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106 | */ |
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107 | |||
108 | struct genl_family *genl_family_alloc(void) |
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109 | { |
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110 | return (struct genl_family *) nl_object_alloc(&genl_family_ops); |
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111 | } |
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112 | |||
113 | void genl_family_put(struct genl_family *family) |
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114 | { |
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115 | nl_object_put((struct nl_object *) family); |
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116 | } |
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117 | |||
118 | /** @} */ |
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119 | |||
120 | |||
121 | int genl_family_add_op(struct genl_family *family, int id, int flags) |
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122 | { |
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123 | struct genl_family_op *op; |
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124 | |||
125 | op = calloc(1, sizeof(*op)); |
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126 | if (op == NULL) |
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127 | return -NLE_NOMEM; |
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128 | |||
129 | op->o_id = id; |
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130 | op->o_flags = flags; |
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131 | |||
132 | nl_list_add_tail(&op->o_list, &family->gf_ops); |
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133 | family->ce_mask |= FAMILY_ATTR_OPS; |
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134 | |||
135 | return 0; |
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136 | } |
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137 | |||
138 | int genl_family_add_grp(struct genl_family *family, uint32_t id, |
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139 | const char *name) |
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140 | { |
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141 | struct genl_family_grp *grp; |
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142 | |||
143 | grp = calloc(1, sizeof(*grp)); |
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144 | if (grp == NULL) |
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145 | return -NLE_NOMEM; |
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146 | |||
147 | grp->id = id; |
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148 | strncpy(grp->name, name, GENL_NAMSIZ - 1); |
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149 | |||
150 | nl_list_add_tail(&grp->list, &family->gf_mc_grps); |
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151 | |||
152 | return 0; |
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153 | } |
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154 | |||
155 | /** @} */ |
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156 | |||
157 | /** @cond SKIP */ |
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158 | struct nl_object_ops genl_family_ops = { |
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159 | .oo_name = "genl/family", |
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160 | .oo_size = sizeof(struct genl_family), |
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161 | .oo_constructor = family_constructor, |
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162 | .oo_free_data = family_free_data, |
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163 | .oo_clone = family_clone, |
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164 | .oo_compare = family_compare, |
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165 | .oo_id_attrs = FAMILY_ATTR_ID, |
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166 | }; |
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167 | /** @endcond */ |
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168 | |||
169 | /** @} */ |