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ttyname
Langue: en
Version: 2002-07-20 (openSuse - 09/10/07)
Section: 3 (Bibliothèques de fonctions)
NAME
ttyname, ttyname_r - return name of a terminalSYNOPSIS
#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
Values stored in errno by a failing ttyname() or returned by a failing 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.
CONFORMING TO
4.2BSD, POSIX.1-2001.SEE ALSO
fstat(2), isatty(3)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre