TTYNAME(3) Linux Programmer's Manual TTYNAME(3)
ttyname, ttyname_r - return name of a terminal
#include <unistd.h> char *ttyname(int fd); int ttyname_r(int fd, char *buf, size_t buflen);.
The function ttyname() returns a pointer to a pathname on success. On error, NULL is returned, and errno is set appropriately. The function ttyname_r() returns 0 on success, and an error number upon error.
ttyname_r(): EBADF Bad file descriptor. ENOTTY File descriptor does not refer to a terminal device. ERANGE buflen was too small to allow storing the pathname.
4.2BSD, POSIX.1-2001.
fstat(2), isatty(3)
This page is part of release 3.32 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at. Linux 2008-07-14 TTYNAME(3)
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