setattr_should_drop_sgid(9)

💅 setattr_should_drop_sgid 💅

okay bestie, welcome to this page from the Kernel API Manual — it's all about setattr_should_drop_sgid, and yes, the name is a mouthful but we move. 💖

---

🎀 NAME 🎀

setattr_should_drop_sgid — determine whether the setgid bit needs to be removed. iconic little helper behavior, honestly.

---

✨ SYNOPSIS ✨

int setattr_should_drop_sgid (struct mnt_idmap *idmap , const struct inode *inode );

---

🦋 ARGUMENTS 🦋

• idmap — the idmap of the mount the inode was found from.
• inode — the inode to check.

---

🌸 DESCRIPTION 🌸

so like, this function determines whether the setgid bit needs to be removed. that's the whole vibe check. 💅

for backwards compatibility, we require the setgid bit to be removed unconditionally if S_IXGRP is set. no cap.

otherwise, we have the exact same requirements as setattr_prepare and setattr_copy. periodt.

---

🔥 RETURN 🔥

returns ATTR_KILL_SGID if the setgid bit needs to be removed, and 0 otherwise. simple, cute, done. ✨

---

🫶 SEE ALSO 🫶

Kernel file ./fs/attr.c: setattr_should_drop_suidgid(9), chown_ok(9), chgrp_ok(9), setattr_prepare(9), inode_newsize_ok(9), setattr_copy_mgtime(9), setattr_copy(9), notify_change(9).

---

that's the whole page, bestie 💖 — brought to you by ./fs, October 2026, for setattr_should_drop_sgid(9). slay! 🎀