Name
getpt - open a new pseudoterminal masterLibrary
Standard C library ( libc ", " -lc )Synopsis
"#define(7)_GNU_SOURCE" " /* See feature_test_macros */" #include <stdlib.h> "int getpt(void);"
Description
getpt() opens a new pseudoterminal device and returns a file descriptor that refers to that device. It is equivalent to opening the pseudoterminal multiplexor deviceopen("/dev/ptmx", O_RDWR);
on Linux systems, though the pseudoterminal multiplexor device is located elsewhere on some systems that use the GNU C library.
Return Value
getpt() returns an open file descriptor upon successful completion. Otherwise, it returns -1 and sets errno to indicate the error.Errors
getpt() can fail with various errors described in open(2).Attributes
For an explanation of the terms used in this section, see attributes(7).Interface | Attribute | Value |
T} | Thread safety | MT-Safe |