diff options
Diffstat (limited to 'nptl/sysdeps/pthread/createthread.c')
| -rw-r--r-- | nptl/sysdeps/pthread/createthread.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/nptl/sysdeps/pthread/createthread.c b/nptl/sysdeps/pthread/createthread.c index 66fafe8050..3bb3915281 100644 --- a/nptl/sysdeps/pthread/createthread.c +++ b/nptl/sysdeps/pthread/createthread.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002-2007, 2008 Free Software Foundation, Inc. +/* Copyright (C) 2002-2007, 2008, 2010 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -28,7 +28,7 @@ #include "kernel-features.h" -#define CLONE_SIGNAL (CLONE_SIGHAND | CLONE_THREAD) +#define CLONE_SIGNAL (CLONE_SIGHAND | CLONE_THREAD) /* Unless otherwise specified, the thread "register" is going to be initialized with a pointer to the TCB. */ @@ -72,8 +72,14 @@ do_clone (struct pthread *pd, const struct pthread_attr *attr, that cares whether the thread count is correct. */ atomic_increment (&__nptl_nthreads); - if (ARCH_CLONE (fct, STACK_VARIABLES_ARGS, clone_flags, - pd, &pd->tid, TLS_VALUE, &pd->tid) == -1) + int rc = ARCH_CLONE (fct, STACK_VARIABLES_ARGS, clone_flags, + pd, &pd->tid, TLS_VALUE, &pd->tid); + + /* Allow setxid from now onwards. */ + if (__builtin_expect (atomic_exchange_acq (&pd->setxid_futex, 0) == -2, 0)) + lll_futex_wake (&pd->setxid_futex, 1, LLL_PRIVATE); + + if (__builtin_expect (rc == -1, 0)) { atomic_decrement (&__nptl_nthreads); /* Oops, we lied for a second. */ |