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#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
static void create_file(const char *path, const char *buffer, int mode) {
int fd = open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
assert(fd >= 0);
int err = write(fd, buffer, sizeof(char) * strlen(buffer));
assert(err == (sizeof(char) * strlen(buffer)));
close(fd);
}
void setup() {
create_file("test.txt", "abcdefg", 0666);
}
void cleanup() {
unlink("test.txt");
}
void test() {
struct termios tc;
int ret;
int fd;
fd = open("test.txt", O_RDONLY);
ret = tcgetattr(fd, &tc);
assert(ret == -1);
assert(errno = ENOTTY);
ret = tcgetattr(STDIN_FILENO, &tc);
assert(!ret);
ret = tcsetattr(fd, 0, &tc);
assert(ret == -1);
assert(errno = ENOTTY);
ret = tcsetattr(STDIN_FILENO, 0, &tc);
assert(!ret);
close(fd);
puts("success");
}
int main() {
atexit(cleanup);
signal(SIGABRT, cleanup);
setup();
test();
return EXIT_SUCCESS;
}
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