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libipc-old/lib/communication.h

78 lines
2.2 KiB
C

#ifndef __COMMUNICATION_H__
#define __COMMUNICATION_H__
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "process.h"
#include <unistd.h> // unlink
#include <sys/types.h> // mkfifo
#include <sys/stat.h> // mkfifo
#include <fcntl.h> // open
#include <errno.h> // error numbers
#define COMMUNICATION_VERSION 1
#define ER_FILE_OPEN 1
#define ER_FILE_CLOSE 2
#define ER_FILE_READ 3
#define ER_FILE_WRITE 4
#define ER_FILE_WRITE_PARAMS 5
#define ER_MEM_ALLOC 100
#define ER_PARAMS 101
struct service {
unsigned int version;
unsigned int index;
char spath[PATH_MAX];
FILE *spipe;
};
int srv_init (int argc, char **argv, char **env
, struct service *srv, const char *sname
, int (*cb)(int argc, char **argv, char **env
, struct service *srv, const char *sname));
int srv_get_listen_raw (const struct service *srv, char **buf, size_t *msize);
int srv_get_new_process (const struct service *srv, struct process *proc);
/*
* returns
* 0 : ok
* 1 : no service name
* 2 : service name too long
* 3 : unable to create fifo
*/
int srv_create (struct service *srv);
int srv_close (struct service *srv);
int srv_read_cb (struct process *p, char ** buf, size_t * msize
, int (*cb)(FILE *f, char ** buf, size_t * msize));
int srv_read (struct process *, char ** buf, size_t *);
int srv_write (struct process *, char * buf, size_t);
// APPLICATION
// send the connection string to $TMP/<service>
int app_srv_connection (struct service *, const char *, size_t);
int app_create (struct process *, pid_t pid, int index, int version);
int app_destroy (struct process *);
int app_read_cb (struct process *p, char ** buf, size_t * msize
, int (*cb)(FILE *f, char ** buf, size_t * msize));
int app_read (struct process *, char ** buf, size_t *);
int app_write (struct process *, char * buf, size_t);
// wrappers
int file_open (FILE **f, const char *path, const char *mode);
int file_close (FILE *f);
int file_read (FILE *f, char **buf, size_t *msize);
int file_write (FILE *f, const char *buf, size_t msize);
#endif