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getpt(3) Library Functions Manual getpt(3)
getpt - open a new pseudoterminal master
Standard C library (libc, -lc)
#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <stdlib.h> int getpt(void);
getpt() opens a new pseudoterminal device and returns a file descriptor that refers to that device. It is equivalent to opening the pseudoterminal multiplexor device open("/dev/ptmx", O_RDWR); on Linux systems, though the pseudoterminal multiplexor device is located elsewhere on some systems that use the GNU C library.
getpt() returns an open file descriptor upon successful completion. Otherwise, it returns -1 and sets errno to indicate the error.
getpt() can fail with various errors described in open(2).
For an explanation of the terms used in this section, see attributes(7). ┌─────────────────────────────────────┬───────────────┬─────────┐ │ Interface │ Attribute │ Value │ ├─────────────────────────────────────┼───────────────┼─────────┤ │ getpt() │ Thread safety │ MT-Safe │ └─────────────────────────────────────┴───────────────┴─────────┘
Use posix_openpt(3) instead.
GNU.
glibc 2.1.
grantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)
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Linux man-pages 6.9.1 2024-05-02 getpt(3)
Pages that refer to this page: posix_openpt(3), pts(4)
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