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Annotation of researchv10dc/man/adm/man3/ttyname.3, revision 1.1.1.1

1.1       root        1: .TH TTYNAME 3
                      2: .CT 2 comm_term
                      3: .SH NAME
                      4: ttyname, isatty, nametty \(mi find or set name of a terminal
                      5: .SH SYNOPSIS
                      6: .B char *ttyname(fildes)
                      7: .PP
                      8: .B isatty(fildes)
                      9: .PP
                     10: .B nametty(fildes, file)
                     11: .br
                     12: .B char *file;
                     13: .SH DESCRIPTION
                     14: .I Ttyname
                     15: returns a pointer to the null-terminated path name
                     16: of the terminal device associated with file descriptor
                     17: .IR fildes .
                     18: .PP
                     19: .I Isatty
                     20: returns 1 if
                     21: .I fildes
                     22: is associated with a terminal device,
                     23: 0 otherwise.
                     24: .PP
                     25: .I Nametty
                     26: arranges that future opens of
                     27: .I file
                     28: will refer to
                     29: the stream opened on
                     30: .IR fildes .
                     31: .I File
                     32: must exist before
                     33: .I nametty
                     34: is called.
                     35: The arrangement is terminated
                     36: when the other end of the stream
                     37: is closed or hung up.
                     38: .SH FILES
                     39: .F /lib/ttydevs
                     40:        list of tty directories for
                     41: .I ttyname
                     42: .SH SEE ALSO
                     43: .IR fmount (2),
                     44: .IR ioctl (2)
                     45: .SH DIAGNOSTICS
                     46: .I Ttyname
                     47: returns
                     48: .L NULL
                     49: if
                     50: .I fildes
                     51: does not describe an entry in any of the directories
                     52: listed in
                     53: .FR /lib/ttydevs .
                     54: .PP
                     55: .I Nametty
                     56: returns 1 for success,
                     57: 0 for failure
                     58: .RI ( file
                     59: does not exist,
                     60: .I fildes
                     61: is not a stream).
                     62: .SH BUGS
                     63: The return value of
                     64: .I ttyname
                     65: points to static data
                     66: whose content is overwritten by each call.
                     67: .br
                     68: If
                     69: .I fildes
                     70: connects to a remote machine, as when serving
                     71: .I dcon
                     72: or
                     73: .I rx
                     74: (see
                     75: .IR con (1)),
                     76: .I isatty
                     77: answers no, regardless of whether the stream 
                     78: leads ultimately to a terminal on the remote machine.
                     79: Similarly, when serving
                     80: .I ndcon
                     81: or
                     82: .I nrx,
                     83: it always answers yes.
                     84: 

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