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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/unix/sysv/linux/sigwait.c
1 /* Copyright (C) 1997,1998,2000,2002,2003,2004 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, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
25 #include <sysdep-cancel.h>
26 #include <sys/syscall.h>
27 #include <bp-checks.h>
29 #ifdef __NR_rt_sigtimedwait
31 /* Return any pending signal or wait for one for the given time. */
33 do_sigwait (const sigset_t
*set
, int *sig
)
40 && (__builtin_expect (__sigismember (set
, SIGCANCEL
), 0)
42 || __builtin_expect (__sigismember (set
, SIGSETXID
), 0)
46 /* Create a temporary mask without the bit for SIGCANCEL set. */
47 // We are not copying more than we have to.
48 memcpy (&tmpset
, set
, _NSIG
/ 8);
49 __sigdelset (&tmpset
, SIGCANCEL
);
51 __sigdelset (&tmpset
, SIGSETXID
);
57 /* XXX The size argument hopefully will have to be changed to the
58 real size of the user-level sigset_t. */
59 #ifdef INTERNAL_SYSCALL
60 INTERNAL_SYSCALL_DECL (err
);
61 ret
= INTERNAL_SYSCALL (rt_sigtimedwait
, err
, 4, CHECK_SIGSET (set
),
62 NULL
, NULL
, _NSIG
/ 8);
63 if (! INTERNAL_SYSCALL_ERROR_P (ret
, err
))
69 ret
= INTERNAL_SYSCALL_ERRNO (ret
, err
);
71 ret
= INLINE_SYSCALL (rt_sigtimedwait
, 4, CHECK_SIGSET (set
),
72 NULL
, NULL
, _NSIG
/ 8);
91 return do_sigwait (set
, sig
);
93 int oldtype
= LIBC_CANCEL_ASYNC ();
95 int result
= do_sigwait (set
, sig
);
97 LIBC_CANCEL_RESET (oldtype
);
101 libc_hidden_def (__sigwait
)
102 weak_alias (__sigwait
, sigwait
)
104 # include <sysdeps/posix/sigwait.c>
106 strong_alias (__sigwait
, __libc_sigwait
)