ptsname(3C) manual page
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ptsname - get name of the slave pseudo-terminal device
#include
<stdio.h>
char *ptsname(int fildes);
Safe
The ptsname()
function returns the name of the slave pseudo-terminal device associated
with a master pseudo-terminal device. fildes is a file descriptor returned
from a successful open of the master device. ptsname() returns a pointer
to a string containing the null-terminated path name of the slave device
of the form /dev/pts/N, where N is a non-negative integer.
Upon
successful completion, the function ptsname() returns a pointer to a string
which is the name of the pseudo-terminal slave device. This value points
to a static data area that is overwritten by each call to ptsname(). Upon
failure, ptsname() returns NULL
. This could occur if fildes is an invalid
file descriptor or if the slave device name does not exist in the file
system.
open(2)
, grantpt(3C)
, ttyname(3C)
, unlockpt(3C)
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