ISASTREAM(3POSIX)

📦 version 2017a, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu resolute, ubuntu stonking

✨ ISASTREAM(3POSIX) ✨

okay bestie, so this one lives in the POSIX Programmer's Manual (that's the <pink>POSIX Programmer's Manual</pink> manual, section 3POSIX) 💖

🌸 PROLOG 🌸

so like, real talk first: this manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ — so if you're on Linux, go check the corresponding Linux manual page for the deets on how Linux actually does it. Or… the interface might not be implemented on Linux at all. 🙈 Not me warning you upfront. Slay.

🎀 NAME 🎀

isastream — test a file descriptor (STREAMS) 💅

🦋 SYNOPSIS 🦋

#include <stropts.h>

int isastream(int fildes);

💜 DESCRIPTION 💜

The isastream() function shall test whether fildes — an open file descriptor, bestie, an open one — is associated with a STREAMS-based file. That's it. That's the whole vibe check. 🫶

⭐ RETURN VALUE ⭐

Upon successful completion, isastream() shall return 1 if fildes refers to a STREAMS-based file, and 0 if not. ✨

Otherwise, isastream() shall return -1 and set errno to indicate the error. 😭

🔥 ERRORS 🔥

The isastream() function shall fail if:

  • EBADF — The fildes argument is not a valid open file descriptor. 💀 like girl. that's not a file descriptor.

The following sections are informative.

🌈 EXAMPLES 🌈

None. (i know. nothing. not a single one. iconic of them honestly 🎀)

🧚 APPLICATION USAGE 🧚

None. 🦋

💖 RATIONALE 💖

None. 💜

👑 FUTURE DIRECTIONS 👑

The isastream() function may be removed in a future version. so… cherish her while she's here bestie 😭

🌸 SEE ALSO 🌸

The Base Definitions volume of POSIX.1‐2017, <stropts.h> 📖

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

and that's a wrap, bestie 🫶 this whole thing was brought to you by IEEE/The Open Group, dated 2017 — no cap, that's the version and the date, go off kings 👑💖

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