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remove bug with sockets: write->send(..., MSG_NOSIGNAL)

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This commit is contained in:
Edward Emelianov 2022-03-24 12:21:49 +03:00
parent a7f4837530
commit fd5d3ddf8e
3 changed files with 1 additions and 96 deletions
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67
tty.c
View File

@ -1,67 +0,0 @@
/*
* This file is part of the ttyterm project.
* Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* 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/>.
*/
#include <stdio.h> // getchar
#include <sys/select.h>
#include "tty.h"
static int sec = 0, usec = 100; // timeout
void settimeout(int tmout){
sec = 0;
if(tmout > 999){
sec = tmout / 1000;
tmout -= sec * 1000;
}
usec = tmout * 1000L;
}
//extern FILE *fd;
int Read_tty(TTY_descr *d){
if(!d || d->comfd < 0) return 0;
size_t L = 0;
ssize_t l;
size_t length = d->bufsz;
char *ptr = d->buf;
fd_set rfds;
struct timeval tv;
int retval;
do{
l = 0;
FD_ZERO(&rfds);
FD_SET(d->comfd, &rfds);
tv.tv_sec = sec; tv.tv_usec = usec;
retval = select(d->comfd + 1, &rfds, NULL, NULL, &tv);
if(!retval) break;
if(retval < 0){
if(errno == EINTR) continue;
return -1;
}
if(FD_ISSET(d->comfd, &rfds)){
l = read(d->comfd, ptr, length);
if(l < 1) return -1; // disconnected
ptr += l; L += l;
length -= l;
}
}while(l && length);
d->buflen = L;
d->buf[L] = 0;
return (int)L;
}

28
tty.h
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@ -1,28 +0,0 @@
/*
* This file is part of the ttyterm project.
* Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* 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/>.
*/
#pragma once
#ifndef TTY_H__
#define TTY_H__
#include <usefull_macros.h>
int Read_tty(TTY_descr *d);
void settimeout(int tms);
#endif // TTY_H__

2
ttysocket.c
View File

@ -214,7 +214,7 @@ int SendData(chardevice *d, char *str){
break;
case DEV_NETSOCKET:
case DEV_UNIXSOCKET:
if(lplus != send(d->dev->comfd, buf, lplus, 0)) ret = 0;
if(lplus != send(d->dev->comfd, buf, lplus, MSG_NOSIGNAL)) ret = 0;
else ret = l;
pthread_mutex_unlock(&d->mutex);
break;