From 442e8a40da9dfa24aeebf4f1a163f0a58b12cf7e Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Wed, 21 Apr 2021 19:49:51 +0200 Subject: nptl: Move part of TCB initialization from libpthread to __tls_init_tp This initalization should only happen once for the main thread's TCB. At present, auditors can achieve this by not linking against libpthread. If libpthread becomes part of libc, doing this initialization in libc would happen for every audit namespace, or too late (if it happens from the main libc only). That's why moving this code into ld.so seems the right thing to do, right after the TCB initialization. For !__ASSUME_SET_ROBUST_LIST ports, this also moves the symbol __set_robust_list_avail into ld.so, as __nptl_set_robust_list_avail. It also turned into a proper boolean flag. Inline the __pthread_initialize_pids function because it seems no longer useful as a separate function. Reviewed-by: Adhemerval Zanella --- sysdeps/unix/sysv/linux/pthread-pids.h | 29 ----------------------------- 1 file changed, 29 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/pthread-pids.h (limited to 'sysdeps/unix') diff --git a/sysdeps/unix/sysv/linux/pthread-pids.h b/sysdeps/unix/sysv/linux/pthread-pids.h deleted file mode 100644 index 10b58899f5..0000000000 --- a/sysdeps/unix/sysv/linux/pthread-pids.h +++ /dev/null @@ -1,29 +0,0 @@ -/* Initialize pid and tid fields of struct pthread. Linux version. - Copyright (C) 2015-2021 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include - -/* Initialize PD->pid and PD->tid for the initial thread. If there is - setup required to arrange that __exit_thread causes PD->tid to be - cleared and futex-woken, then this function should do that as well. */ -static inline void -__pthread_initialize_pids (struct pthread *pd) -{ - pd->tid = INTERNAL_SYSCALL_CALL (set_tid_address, &pd->tid); -} -- cgit 1.4.1