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GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux

CentOS 4.8

i386

ttyname(3)


TTYNAME

TTYNAME

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
SEE ALSO

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 NUL-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

POSIX.1

SEE ALSO

fstat(2), isatty(3)



ttyname(3)