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/**
* mds — A micro-display server
* Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MDS_MDS_SERVER_H
#define MDS_MDS_SERVER_H
#include <libmdsserver/mds-message.h>
#include <stdlib.h>
/**
* Client information structure
*/
typedef struct client
{
/**
* The client's entry in the list of clients
*/
ssize_t list_entry;
/**
* The socket file descriptor for the socket connected to the client
*/
int socket_fd;
/**
* Whether the socket is open
*/
int open;
/**
* Message read buffer for the client
*/
mds_message_t message;
} client_t;
/**
* Master function for slave threads
*
* @param data Input data
* @return Outout data
*/
void* slave_loop(void* data);
/**
* Read an environment variable, but handle it as undefined if empty
*
* @param var The environment variable's name
* @return The environment variable's value, `NULL` if empty or not defined
*/
char* getenv_nonempty(const char* var);
/**
* Exec into the mdsinitrc script
*
* @param args The arguments to the child process
*/
void run_initrc(char** args);
/**
* Called with the signal SIGUSR1 is caught.
* This function should cue a re-exec of the program.
*
* @param signo The caught signal
*/
void sigusr1_trap(int signo);
/**
* Marshal the server's state into a file
*
* @param fd The file descriptor
* @return Negative on error
*/
int marshal_server(int fd);
/**
* Unmarshal the server's state from a file
*
* @param fd The file descriptor
* @return Negative on error
*/
int unmarshal_server(int fd);
#endif
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