NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | BUGS | SEE ALSO | COLOPHON 

CTERMID(3)                Linux Programmer's Manual               CTERMID(3)

NAME         top

       ctermid - get controlling terminal name

SYNOPSIS         top

       #include <stdio.h>
       char *ctermid(char *s);
   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
       ctermid(): _POSIX_C_SOURCE

DESCRIPTION         top

       ctermid() returns a string which is the pathname for the current
       controlling terminal for this process.  If s is NULL, a static buffer
       is used, otherwise s points to a buffer used to hold the terminal
       pathname.  The symbolic constant L_ctermid is the maximum number of
       characters in the returned pathname.

RETURN VALUE         top

       The pointer to the pathname.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────┬───────────────┬─────────┐
       │Interface │ Attribute     │ Value   │
       ├──────────┼───────────────┼─────────┤
       │ctermid() │ Thread safety │ MT-Safe │
       └──────────┴───────────────┴─────────┘

CONFORMING TO         top

       POSIX.1-2001, POSIX.1-2008, Svr4.

BUGS         top

       The path returned may not uniquely identify the controlling terminal;
       it may, for example, be /dev/tty.
       It is not assured that the program can open the terminal.

SEE ALSO         top

       ttyname(3)

COLOPHON         top

       This page is part of release 4.12 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.
GNU                              2016-03-15                       CTERMID(3)

Pages that refer to this page: ttyname(3)