1 /* Copyright (C) 1991-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
18 #define sigpause __rename_sigpause
21 #include <stddef.h> /* For NULL. */
24 #include <sigset-cvt-mask.h>
25 #include <sysdep-cancel.h>
28 __sigpause (int sig_or_mask
, int is_sig
)
34 /* The modern X/Open implementation is requested. */
35 if (__sigprocmask (0, NULL
, &set
) < 0
36 || sigdelset (&set
, sig_or_mask
) < 0)
39 else if (sigset_set_old_mask (&set
, sig_or_mask
) < 0)
42 /* Note the sigpause() is a cancellation point. But since we call
43 sigsuspend() which itself is a cancellation point we do not have
44 to do anything here. */
45 return __sigsuspend (&set
);
47 libc_hidden_def (__sigpause
)
49 /* We have to provide a default version of this function since the
50 standards demand it. The version which is a bit more reasonable is
51 the BSD version. So make this the default. */
53 __attribute__ ((weak
))
54 __default_sigpause (int mask
)
56 return __sigpause (mask
, 0);
59 weak_alias (__default_sigpause
, sigpause
)
60 strong_alias (__default_sigpause
, __libc_sigpause
)
63 /* We have to provide a default version of this function since the
64 standards demand it. The version which is a bit more reasonable is
65 the BSD version. So make this the default. */
67 __attribute__ ((weak
))
68 __xpg_sigpause (int sig
)
70 return __sigpause (sig
, 1);
72 strong_alias (__xpg_sigpause
, __libc___xpg_sigpause
)
74 /* __sigsuspend handles cancellation. */
75 LIBC_CANCEL_HANDLED ();