GETGID(3P)

💖 GETGID(3P) — POSIX Programmer's Manual 💖

okay bestie, this is GETGID(3P), a page from the POSIX Programmer's Manual, and we're about to get your group ID together. no cap. ✨

🌸 PROLOG 🌸

real talk first: this manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. so like, check your local listings, yk? 🫶

---

👑 NAME 👑

getgid — get the real group ID

✨ SYNOPSIS ✨

#include <unistd.h>

gid_t getgid(void);

🦋 DESCRIPTION 🦋

The getgid() function shall return the real group ID of the calling process. that's it. that's the whole vibe. 💅

and the getgid() function shall not modify errno. she's respectful. she leaves it exactly how she found it. 🎀

💜 RETURN VALUE 💜

The getgid() function shall always be successful and no return value is reserved to indicate an error. she literally cannot fail. main character energy fr fr. 👑

😭 ERRORS 😭

No errors are defined.

The following sections are informative.

🍓 EXAMPLES 🍓

None.

🧚 APPLICATION USAGE 🧚

None.

🔥 RATIONALE 🔥

In a conforming environment, getgid() will always succeed. It is possible for implementations to provide an extension where a process in a non-conforming environment will not be associated with a user or group ID. It is recommended that such implementations return (gid_t)-1 and set errno to indicate such an environment; doing so does not violate this standard, since such an environment is already an extension.

so basically: normal world = always works. weird extension world = (gid_t)-1 + errno, and that's totally allowed bc that world was already an extension anyway. noted. 📝

🌈 FUTURE DIRECTIONS 🌈

None.

🎀 SEE ALSO 🎀

• getegid()
• geteuid()
• getuid()
• setegid()
• seteuid()
• setgid()
• setregid()
• setreuid()
• setuid()

The Base Definitions volume of POSIX.1‐2017, <sys_types.h>, <unistd.h>

💖 COPYRIGHT 💖

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 the whole page, bestie!! 🫶 brought to you by IEEE/The Open Group, 2017 edition — go get that group ID, you absolute icon. 💅✨