src/lxc/confile_utils.h

   1 /* liblxcapi
   2  *
   3  * Copyright © 2017 Christian Brauner <christian.brauner@ubuntu.com>.
   4  * Copyright © 2017 Canonical Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #ifndef __LXC_CONFILE_UTILS_H
  21 #define __LXC_CONFILE_UTILS_H
  22
  23 #include <stdbool.h>
  24
  25 #include "conf.h"
  26 #include "confile_utils.h"
  27
  28 #ifndef MACVLAN_MODE_PRIVATE
  29 #define MACVLAN_MODE_PRIVATE 1
  30 #endif
  31
  32 #ifndef MACVLAN_MODE_VEPA
  33 #define MACVLAN_MODE_VEPA 2
  34 #endif
  35
  36 #ifndef MACVLAN_MODE_BRIDGE
  37 #define MACVLAN_MODE_BRIDGE 4
  38 #endif
  39
  40 #ifndef MACVLAN_MODE_PASSTHRU
  41 #define MACVLAN_MODE_PASSTHRU 8
  42 #endif
  43
  44 #define strprint(str, inlen, ...)                                              \
  45         do {                                                                   \
  46                 len = snprintf(str, inlen, ##__VA_ARGS__);                     \
  47                 if (len < 0) {                                                 \
  48                         SYSERROR("failed to create string");                   \
  49                         return -1;                                             \
  50                 };                                                             \
  51                 fulllen += len;                                                \
  52                 if (inlen > 0) {                                               \
  53                         if (str)                                               \
  54                                 str += len;                                    \
  55                         inlen -= len;                                          \
  56                         if (inlen < 0)                                         \
  57                                 inlen = 0;                                     \
  58                 }                                                              \
  59         } while (0);
  60
  61 extern int parse_idmaps(const char *idmap, char *type, unsigned long *nsid,
  62                         unsigned long *hostid, unsigned long *range);
  63
  64 extern bool lxc_config_value_empty(const char *value);
  65 extern struct lxc_netdev *lxc_network_add(struct lxc_list *networks, int idx,
  66                                           bool tail);
  67 extern struct lxc_netdev *
  68 lxc_get_netdev_by_idx(struct lxc_conf *conf, unsigned int idx, bool allocate);
  69 extern void lxc_log_configured_netdevs(const struct lxc_conf *conf);
  70 extern bool lxc_remove_nic_by_idx(struct lxc_conf *conf, unsigned int idx);
  71 extern void lxc_free_networks(struct lxc_list *networks);
  72 extern int lxc_macvlan_mode_to_flag(int *mode, const char *value);
  73 extern char *lxc_macvlan_flag_to_mode(int mode);
  74
  75 extern int set_config_string_item(char **conf_item, const char *value);
  76 extern int set_config_string_item_max(char **conf_item, const char *value,
  77                                       size_t max);
  78 extern int set_config_path_item(char **conf_item, const char *value);
  79 extern int config_ip_prefix(struct in_addr *addr);
  80 extern int network_ifname(char *valuep, const char *value);
  81 extern int rand_complete_hwaddr(char *hwaddr);
  82 extern bool lxc_config_net_hwaddr(const char *line);
  83 extern void update_hwaddr(const char *line);
  84 extern bool new_hwaddr(char *hwaddr);
  85 extern int lxc_get_conf_str(char *retv, int inlen, const char *value);
  86 extern int lxc_get_conf_int(struct lxc_conf *c, char *retv, int inlen, int v);
  87 extern int lxc_get_conf_uint64(struct lxc_conf *c, char *retv, int inlen, uint64_t v);
  88 extern bool parse_limit_value(const char **value, rlim_t *res);
  89 extern int lxc_inherit_namespace(const char *lxcname_or_pid,
  90                                  const char *lxcpath, const char *namespace);
  91
  92 #endif /* __LXC_CONFILE_UTILS_H */