security/keys/process_keys.c

377 void key_fsuid_changed(struct cred *new_cred)
380 	if (new_cred->thread_keyring) {
381 		down_write(&new_cred->thread_keyring->sem);
382 		new_cred->thread_keyring->uid = new_cred->fsuid;
383 		up_write(&new_cred->thread_keyring->sem);
390 void key_fsgid_changed(struct cred *new_cred)
393 	if (new_cred->thread_keyring) {
394 		down_write(&new_cred->thread_keyring->sem);
395 		new_cred->thread_keyring->gid = new_cred->fsgid;
396 		up_write(&new_cred->thread_keyring->sem);