GETDTABLESIZE(2)

💖 NAME 💖

getdtablesize — get file descriptor limit

okay so this is getdtablesize(2), from the System Calls Manual, and it's literally here to tell you about your fd limit, bestie.

✨ LIBRARY ✨

It lives in the Standard C Library (libc, -lc). slay.

🎀 SYNOPSIS 🎀

#include <unistd.h>

int
getdtablesize(void);

🦋 DESCRIPTION 🦋

The getdtablesize() system call returns the maximum number of file descriptors that the current process may open. no cap, that's the whole vibe.

The maximum file descriptor number that the system may assign is the return value minus one. the way that math works 💅

heads up bestie: existing file descriptor numbers may be higher if the limit was lowered after they were opened. not me warning you about the past 👀

🌈 SEE ALSO 🌈

• close(2)
• closefrom(2)
• dup(2)
• getrlimit(2)
• sysconf(3)

🌸 HISTORY 🌸

The getdtablesize() system call appeared in 4.2BSD. iconic behavior, honestly ✨

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okay bye bestie 💖 — this page is from Debian, dated April 24, 2013, and it's GETDTABLESIZE(2). 🎀