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Sources/procd/utils/utils.h

  1 /*
  2  * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
  3  * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
  4  *
  5  * This program is free software; you can redistribute it and/or modify
  6  * it under the terms of the GNU Lesser General Public License version 2.1
  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 
 15 #ifndef __PROCD_UTILS_H
 16 #define __PROCD_UTILS_H
 17 
 18 #include <libubox/avl.h>
 19 #include <libubox/blob.h>
 20 #include <libubox/blobmsg.h>
 21 
 22 #define CMDLINE_SIZE 2048
 23 
 24 struct blobmsg_list_node {
 25         struct avl_node avl;
 26         struct blob_attr *data;
 27 };
 28 
 29 typedef bool (*blobmsg_list_cmp)(struct blobmsg_list_node *l1, struct blobmsg_list_node *l2);
 30 typedef void (*blobmsg_update_cb)(struct blobmsg_list_node *n);
 31 
 32 struct blobmsg_list {
 33         struct avl_tree avl;
 34         int node_offset;
 35         int node_len;
 36 
 37         blobmsg_list_cmp cmp;
 38 };
 39 
 40 #define blobmsg_list_simple_init(list) \
 41         __blobmsg_list_init(list, 0, sizeof(struct blobmsg_list_node), NULL)
 42 
 43 #define blobmsg_list_init(list, type, field, cmp) \
 44         __blobmsg_list_init(list, offsetof(type, field), sizeof(type), cmp)
 45 
 46 #define blobmsg_list_for_each(list, element) \
 47         avl_for_each_element(&(list)->avl, element, avl)
 48 
 49 void __blobmsg_list_init(struct blobmsg_list *list, int offset, int len, blobmsg_list_cmp cmp);
 50 int blobmsg_list_fill(struct blobmsg_list *list, void *data, int len, bool array);
 51 void blobmsg_list_free(struct blobmsg_list *list);
 52 bool blobmsg_list_equal(struct blobmsg_list *l1, struct blobmsg_list *l2);
 53 void blobmsg_list_move(struct blobmsg_list *list, struct blobmsg_list *src);
 54 char *get_cmdline_val(const char *name, char *out, int len);
 55 char *get_active_console(char *out, int len);
 56 
 57 int patch_fd(const char *device, int fd, int flags);
 58 int patch_stdio(const char *device);
 59 
 60 #endif
 61 

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