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/* SPDX-License-Identifier: BSD-3-Clause */
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#define REQ_ERRPRINT /* Require errprint() from ../common/common.h */
#include "../common/common.h"
int main(int, char *argv[]) {
char *terminalname = ttyname(STDIN_FILENO);
if (errno == ENOTTY) {
/* POSIX says that if the stdin isn't a tty then the error shall be
* written to stdout, not stderr.
*/
printf("not a tty\n");
return 1;
} else if (errno) return errprint(argv[0], NULL, errno);
printf("%s\n", terminalname);
return errprint(argv[0], NULL, errno);
}
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