diff options
Diffstat (limited to 'REORG.TODO/sysdeps/mach/hurd/sigprocmask.c')
-rw-r--r-- | REORG.TODO/sysdeps/mach/hurd/sigprocmask.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/hurd/sigprocmask.c b/REORG.TODO/sysdeps/mach/hurd/sigprocmask.c new file mode 100644 index 0000000000..a4ebe580ff --- /dev/null +++ b/REORG.TODO/sysdeps/mach/hurd/sigprocmask.c @@ -0,0 +1,83 @@ +/* Copyright (C) 1991-2017 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 + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <signal.h> +#include <hurd.h> +#include <hurd/signal.h> +#include <hurd/msg.h> + +/* If SET is not NULL, modify the current set of blocked signals + according to HOW, which may be SIG_BLOCK, SIG_UNBLOCK or SIG_SETMASK. + If OSET is not NULL, store the old set of blocked signals in *OSET. */ +int +__sigprocmask (int how, const sigset_t *set, sigset_t *oset) +{ + struct hurd_sigstate *ss; + sigset_t old, new; + sigset_t pending; + + if (set != NULL) + new = *set; + + ss = _hurd_self_sigstate (); + + __spin_lock (&ss->lock); + + old = ss->blocked; + + if (set != NULL) + { + switch (how) + { + case SIG_BLOCK: + __sigorset (&ss->blocked, &ss->blocked, &new); + break; + + case SIG_UNBLOCK: + ss->blocked &= ~new; + break; + + case SIG_SETMASK: + ss->blocked = new; + break; + + default: + __spin_unlock (&ss->lock); + errno = EINVAL; + return -1; + } + + ss->blocked &= ~_SIG_CANT_MASK; + } + + pending = ss->pending & ~ss->blocked; + + __spin_unlock (&ss->lock); + + if (oset != NULL) + *oset = old; + + if (pending) + /* Send a message to the signal thread so it + will wake up and check for pending signals. */ + __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ()); + + return 0; +} + +weak_alias (__sigprocmask, sigprocmask) |