table of contents
TTYNAME(3) | Linux Programmer's Manual | TTYNAME(3) |
NAME¶
ttyname, ttyname_r - return name of a terminal
SYNOPSIS¶
#include <unistd.h> char *ttyname(int fd); int ttyname_r(int fd, char *buf, size_t buflen);
DESCRIPTION¶
The function ttyname() returns a pointer to the null-terminated pathname of the terminal device that is open on the file descriptor fd, or NULL on error (for example, if fd is not connected to a terminal). The return value may point to static data, possibly overwritten by the next call. The function ttyname_r() stores this pathname in the buffer buf of length buflen.
RETURN VALUE¶
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.
ERRORS¶
ATTRIBUTES¶
Multithreading (see pthreads(7))¶
The ttyname() function is not thread-safe.
The ttyname_r() function is thread-safe.
CONFORMING TO¶
4.2BSD, POSIX.1-2001.
SEE ALSO¶
COLOPHON¶
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
2013-06-21 | Linux |