72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
#ifndef __COMMUNICATION_H__
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#define __COMMUNICATION_H__
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h> // unlink
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#include <sys/types.h> // mkfifo
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#include <sys/stat.h> // mkfifo
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#include <fcntl.h> // open
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#include <errno.h> // error numbers
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#define TMPDIR "/tmp/ipc/"
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#define COMMUNICATION_VERSION 1
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// TODO to check the right length for a path
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#define PATH_MAX BUFSIZ
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struct process {
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pid_t pid;
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unsigned int version;
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unsigned int index;
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FILE *in, *out;
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};
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struct service {
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unsigned int version;
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unsigned int index;
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};
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// TODO create the service process structure
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int service_path (char *buf, const char *sname);
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struct process * srv_process_copy (struct process *p);
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int srv_process_eq (const struct process *p1, const struct process *p2);
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void gen_process_structure (struct process *p
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, pid_t pid, unsigned int index, unsigned int version);
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/*
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* returns
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* 0 : ok
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* 1 : no service name
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* 2 : service name too long
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* 3 : unable to create fifo
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*/
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int service_create (const char *sname);
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int service_close (const char *sname);
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int service_get_new_process (struct process *proc, const char * spath);
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void service_get_new_processes (struct process ***, int *nproc, char *spath);
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void service_free_processes (struct process **, int nproc);
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void process_print (struct process *);
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int process_create (struct process *, int index); // called by the application
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int process_destroy (struct process *); // called by the application
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int process_read (struct process *, void * buf, size_t *);
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int process_write (struct process *, void * buf, size_t);
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int service_read (struct process *, void * buf, size_t *);
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int service_write (struct process *, void * buf, size_t);
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#endif
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