| 1 | /* |
| 2 | * lib/genl/family.c Generic Netlink Family |
| 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 | /** |
| 13 | * @ingroup genl |
| 14 | * @defgroup genl_family Generic Netlink Family |
| 15 | * @brief |
| 16 | * |
| 17 | * @{ |
| 18 | */ |
| 19 | |
| 20 | #include <netlink-generic.h> |
| 21 | #include <netlink/netlink.h> |
| 22 | #include <netlink/genl/genl.h> |
| 23 | #include <netlink/genl/family.h> |
| 24 | #include <netlink/utils.h> |
| 25 | |
| 26 | struct nl_object_ops genl_family_ops; |
| 27 | /** @endcond */ |
| 28 | |
| 29 | static void family_constructor(struct nl_object *c) |
| 30 | { |
| 31 | struct genl_family *family = (struct genl_family *) c; |
| 32 | |
| 33 | nl_init_list_head(&family->gf_ops); |
| 34 | } |
| 35 | |
| 36 | static void family_free_data(struct nl_object *c) |
| 37 | { |
| 38 | struct genl_family *family = (struct genl_family *) c; |
| 39 | struct genl_family_op *ops, *tmp; |
| 40 | |
| 41 | if (family == NULL) |
| 42 | return; |
| 43 | |
| 44 | nl_list_for_each_entry_safe(ops, tmp, &family->gf_ops, o_list) { |
| 45 | nl_list_del(&ops->o_list); |
| 46 | free(ops); |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | static int family_clone(struct nl_object *_dst, struct nl_object *_src) |
| 51 | { |
| 52 | struct genl_family *dst = nl_object_priv(_dst); |
| 53 | struct genl_family *src = nl_object_priv(_src); |
| 54 | struct genl_family_op *ops; |
| 55 | int err; |
| 56 | |
| 57 | nl_list_for_each_entry(ops, &src->gf_ops, o_list) { |
| 58 | err = genl_family_add_op(dst, ops->o_id, ops->o_flags); |
| 59 | if (err < 0) |
| 60 | return err; |
| 61 | } |
| 62 | |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | static int family_compare(struct nl_object *_a, struct nl_object *_b, |
| 67 | uint32_t attrs, int flags) |
| 68 | { |
| 69 | struct genl_family *a = (struct genl_family *) _a; |
| 70 | struct genl_family *b = (struct genl_family *) _b; |
| 71 | int diff = 0; |
| 72 | |
| 73 | #define FAM_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, FAMILY_ATTR_##ATTR, a, b, EXPR) |
| 74 | |
| 75 | diff |= FAM_DIFF(ID, a->gf_id != b->gf_id); |
| 76 | diff |= FAM_DIFF(VERSION, a->gf_version != b->gf_version); |
| 77 | diff |= FAM_DIFF(HDRSIZE, a->gf_hdrsize != b->gf_hdrsize); |
| 78 | diff |= FAM_DIFF(MAXATTR, a->gf_maxattr != b->gf_maxattr); |
| 79 | diff |= FAM_DIFF(NAME, strcmp(a->gf_name, b->gf_name)); |
| 80 | |
| 81 | #undef FAM_DIFF |
| 82 | |
| 83 | return diff; |
| 84 | } |
| 85 | |
| 86 | |
| 87 | /** |
| 88 | * @name Family Object |
| 89 | * @{ |
| 90 | */ |
| 91 | |
| 92 | struct genl_family *genl_family_alloc(void) |
| 93 | { |
| 94 | return (struct genl_family *) nl_object_alloc(&genl_family_ops); |
| 95 | } |
| 96 | |
| 97 | void genl_family_put(struct genl_family *family) |
| 98 | { |
| 99 | nl_object_put((struct nl_object *) family); |
| 100 | } |
| 101 | |
| 102 | /** @} */ |
| 103 | |
| 104 | |
| 105 | int genl_family_add_op(struct genl_family *family, int id, int flags) |
| 106 | { |
| 107 | struct genl_family_op *op; |
| 108 | |
| 109 | op = calloc(1, sizeof(*op)); |
| 110 | if (op == NULL) |
| 111 | return -NLE_NOMEM; |
| 112 | |
| 113 | op->o_id = id; |
| 114 | op->o_flags = flags; |
| 115 | |
| 116 | nl_list_add_tail(&op->o_list, &family->gf_ops); |
| 117 | family->ce_mask |= FAMILY_ATTR_OPS; |
| 118 | |
| 119 | return 0; |
| 120 | } |
| 121 | |
| 122 | /** @} */ |
| 123 | |
| 124 | /** @cond SKIP */ |
| 125 | struct nl_object_ops genl_family_ops = { |
| 126 | .oo_name = "genl/family", |
| 127 | .oo_size = sizeof(struct genl_family), |
| 128 | .oo_constructor = family_constructor, |
| 129 | .oo_free_data = family_free_data, |
| 130 | .oo_clone = family_clone, |
| 131 | .oo_compare = family_compare, |
| 132 | .oo_id_attrs = FAMILY_ATTR_ID, |
| 133 | }; |
| 134 | /** @endcond */ |
| 135 | |
| 136 | /** @} */ |
| 137 | |
