Project

General

Profile

Download (1.03 KB)

Bug #3252 ยป tcerror.c

test code - tonyc, 10/25/2020 09:35 PM

 
#include <termios.h>
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>

int main(void) {
struct termios ti;
int nullfd = open("/dev/null", O_RDWR);
int termfd = fileno(stdin); /* stdin: intended to be run in a terminal */
int err;

if (nullfd < 0) {
perror("NA: null open failed");
exit(1);
}

errno = 0;
if (tcgetattr(nullfd, &ti) < 0) {
err = errno;
printf("OK: tcgetattr on /dev/null failed as expected\n");
if (err != ENOTTY) {
perror("FAIL: tcgetattr on /dev/null set errno incorrectly");
}
}
else {
printf("FAIL: tcgetattr on /dev/null succeeded\n");
}

errno = 0;
if (tcgetattr(termfd, &ti) < 0) {
perror("NA: tcgetattr failed");
exit(1);
}

errno = 0;
if (tcsetattr(nullfd, TCSADRAIN, &ti) == 0) {
perror("FAIL: tcsetattr succeeded unexpectedly");
exit(1);
}
err = errno;
printf("OK: tcsetattr failed as expected\n");
if (err != ENOTTY) {
perror("FAIL: tcsetattr failure set errno incorrectly");
exit(1);
}

return 0;
}
    (1-1/1)