device: Don't process link events anymore in device user specific callback handlers
[project/netifd.git] / utils.h
1 /*
2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14 #ifndef __NETIFD_UTILS_H
15 #define __NETIFD_UTILS_H
16
17 #include <unistd.h>
18 #include <stdio.h>
19 #include <uci_blob.h>
20 #include <libubox/list.h>
21 #include <libubox/avl.h>
22 #include <libubox/avl-cmp.h>
23 #include <libubox/blobmsg.h>
24 #include <libubox/vlist.h>
25 #include <libubox/utils.h>
26
27 static inline bool blobmsg_get_bool_default(struct blob_attr *attr, bool val)
28 {
29 if (!attr)
30 return val;
31
32 return blobmsg_get_bool(attr);
33 }
34
35 #define __init __attribute__((constructor))
36
37 struct vlist_simple_tree {
38 struct list_head list;
39 int head_offset;
40 int version;
41 };
42
43 struct vlist_simple_node {
44 struct list_head list;
45 int version;
46 };
47
48 #define vlist_for_each_element_safe(tree, element, node_member, ptr) \
49 avl_for_each_element_safe(&(tree)->avl, element, node_member.avl, ptr)
50
51 #define vlist_simple_init(tree, node, member) \
52 __vlist_simple_init(tree, offsetof(node, member))
53
54 void __vlist_simple_init(struct vlist_simple_tree *tree, int offset);
55 void vlist_simple_delete(struct vlist_simple_tree *tree, struct vlist_simple_node *node);
56 void vlist_simple_flush(struct vlist_simple_tree *tree);
57 void vlist_simple_flush_all(struct vlist_simple_tree *tree);
58 void vlist_simple_replace(struct vlist_simple_tree *dest, struct vlist_simple_tree *old);
59
60 static inline void vlist_simple_update(struct vlist_simple_tree *tree)
61 {
62 tree->version++;
63 }
64
65 static inline void vlist_simple_add(struct vlist_simple_tree *tree, struct vlist_simple_node *node)
66 {
67 node->version = tree->version;
68 list_add_tail(&node->list, &tree->list);
69 }
70
71 #define vlist_simple_for_each_element(tree, element, node_member) \
72 list_for_each_entry(element, &(tree)->list, node_member.list)
73
74 #define vlist_simple_empty(tree) \
75 list_empty(&(tree)->list)
76
77
78 #ifdef __linux__
79 static inline int fls(int x)
80 {
81 int r = 32;
82
83 if (!x)
84 return 0;
85 if (!(x & 0xffff0000u)) {
86 x <<= 16;
87 r -= 16;
88 }
89 if (!(x & 0xff000000u)) {
90 x <<= 8;
91 r -= 8;
92 }
93 if (!(x & 0xf0000000u)) {
94 x <<= 4;
95 r -= 4;
96 }
97 if (!(x & 0xc0000000u)) {
98 x <<= 2;
99 r -= 2;
100 }
101 if (!(x & 0x80000000u))
102 r -= 1;
103 return r;
104 }
105 #endif
106
107 unsigned int parse_netmask_string(const char *str, bool v6);
108 bool split_netmask(char *str, unsigned int *netmask, bool v6);
109 int parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask);
110 bool check_pid_path(int pid, const char *exe);
111
112 char * format_macaddr(uint8_t *mac);
113
114 uint32_t crc32_file(FILE *fp);
115
116 const char * uci_get_validate_string(const struct uci_blob_param_list *c, int i);
117
118 #ifdef __APPLE__
119 #define s6_addr32 __u6_addr.__u6_addr32
120 #endif
121
122 #endif