ctdb/common/system.h

   1 /*
   2    System specific code
   3
   4    Copyright (C) Amitay Isaacs  2015
   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 as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #ifndef __CTDB_SYSTEM_H__
  21 #define __CTDB_SYSTEM_H__
  22
  23 #include <talloc.h>
  24
  25 /* From system_common.c */
  26
  27 uint32_t uint16_checksum(uint16_t *data, size_t n);
  28 bool ctdb_sys_have_ip(ctdb_sock_addr *_addr);
  29 char *ctdb_sys_find_ifname(ctdb_sock_addr *addr);
  30
  31 /* From system_<os>.c */
  32
  33 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
  34 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
  35                       const ctdb_sock_addr *src,
  36                       uint32_t seq, uint32_t ack, int rst);
  37 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
  38 int ctdb_sys_close_capture_socket(void *private_data);
  39 int ctdb_sys_read_tcp_packet(int s, void *private_data,
  40                              ctdb_sock_addr *src, ctdb_sock_addr *dst,
  41                              uint32_t *ack_seq, uint32_t *seq,
  42                              int *rst, uint16_t *window);
  43 bool ctdb_sys_check_iface_exists(const char *iface);
  44 int ctdb_get_peer_pid(const int fd, pid_t *peer_pid);
  45
  46 /* From system_util.c */
  47
  48 bool set_scheduler(void);
  49 void reset_scheduler(void);
  50
  51 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
  52 bool parse_ip(const char *addr, const char *ifaces, unsigned port,
  53               ctdb_sock_addr *saddr);
  54 bool parse_ip_mask(const char *str, const char *ifaces, ctdb_sock_addr *addr,
  55                    unsigned *mask);
  56 bool parse_ip_port(const char *addr, ctdb_sock_addr *saddr);
  57
  58 void lockdown_memory(bool valgrinding);
  59
  60 int mkdir_p(const char *dir, int mode);
  61 void mkdir_p_or_die(const char *dir, int mode);
  62
  63 ssize_t sys_read(int fd, void *buf, size_t count);
  64 ssize_t sys_write(int fd, const void *buf, size_t count);
  65
  66 void ctdb_wait_for_process_to_exit(pid_t pid);
  67
  68 int ctdb_parse_connections(FILE *fp, TALLOC_CTX *mem_ctx,
  69                            int *num_conn, struct ctdb_connection **out);
  70
  71 #endif /* __CTDB_SYSTEM_H__ */