STRNLEN(3POSIX)

💖 STRNLEN(3POSIX) — the POSIX Programmer's Manual, bestie edition 🎀

okay so real talk, this is strnlen from the POSIX Programmer's Manual and I'm literally so hype to tell you about it. it's in section 3, it's a C library function, and yes we are doing this together, hand in hand, like the icons we are. 💅

---

✨ PROLOG ✨

okay first things first, important disclaimer energy:

this manual page is part of the POSIX Programmer's Manual. 🫶

• the Linux implementation of this interface may differ — so bestie, pls consult the corresponding Linux manual page for details on Linux behavior
• or, plot twist, the interface may not be implemented on Linux at all 😭

no cap, check before you ship. 🚨

---

🌸 NAME 🌸

strnlen — get length of fixed size string

like, it's giving "how long is this thing, but capped at a max". iconic. 👑

---

🦋 SYNOPSIS 🦋

#include <string.h>

size_t strnlen(const char *s, size_t maxlen);

yes, <string.h> the one and only. and yes, it hands you back a size_t. periodt. ✨

---

💜 DESCRIPTION 💜

okay so, plot twist, there's not a huge lore drop here: Refer to strlen().

that's it. that's the description. the whole thing. it's lowkey a "go read the other page" moment and honestly? valid. strnlen is strlen's more careful cousin, and the deets live over there. go read strlen(3POSIX), bestie, I'll wait. 🌈

ngl the entire DESCRIPTION section is literally just that one sentence, so if you were waiting for a big paragraph — no ma'am, that's the whole vibe.

---

👑 COPYRIGHT 👑

okay the serious part, but I'm still gonna hold your hand through it 💖:

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. (translation: if they disagree, the original wins, no debate, that's the main character.) 👑

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 .

---

fr fr, if you spot a typo, it's probably a conversion glitch, not a lore drop. report it at the link above and be the hero this manpage deserves. 🫡

---

and that's the whole page, bestie!! IEEE/The Open Group dropped this in 2017, and it's STRNLEN(3POSIX) forever and always. go forth, measure your fixed size strings, and slay. 💖✨🎀🦋🌸💅🫶🔥👑🌈⭐💜