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35 lines
810 B
Markdown
35 lines
810 B
Markdown
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## Name
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posix\_openpt - open a pseudo-terminal device
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## Synopsis
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```**c++
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#include <stdlib.h>
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#include <fcntl.h>
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int posix_openpt(int flags);
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```
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## Description
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Open a pseudo-terminal master using the given *flags*.
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The *flags* argument accepts a bitmask of the following flags:
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* `O_RDWR`: Open for both reading and writing.
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* `O_NOCTTY`: The opened pseudo-terminal will not be made the controlling TTY for the process.
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* `O_CLOEXEC`: The opened fd shall be closed on [`exec`(2)](../man2/exec.md).
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## Return value
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On success, a pseudo-terminal device is allocated and `posix_openpt()` returns a file descriptor for it. Otherwise, it returns -1 and sets `errno` to describe the error.
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## Errors
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Returns the same errors as [`open`(2)](../man2/open.md).
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## See also
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* [`open`(2)](../man2/open.md)
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