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c0fb8a56 UD |
1 | /* Convert between lowlevel sigmask and libc representation of sigset_t. |
2 | Generic version. | |
2b778ceb | 3 | Copyright (C) 1998-2021 Free Software Foundation, Inc. |
c0fb8a56 UD |
4 | This file is part of the GNU C Library. |
5 | Contributed by Joe Keane <jgk@jgk.org>. | |
6 | ||
7 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either | |
10 | version 2.1 of the License, or (at your option) any later version. | |
c0fb8a56 UD |
11 | |
12 | The GNU C Library is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 15 | Lesser General Public License for more details. |
c0fb8a56 | 16 | |
41bdb6e2 | 17 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 18 | License along with the GNU C Library; if not, see |
5a82c748 | 19 | <https://www.gnu.org/licenses/>. */ |
c0fb8a56 | 20 | |
b5d482d0 | 21 | /* Convert between an old-style 32-bit signal mask and a POSIX sigset_t. */ |
c0fb8a56 | 22 | |
4f66dc23 ST |
23 | #include <sigsetops.h> |
24 | ||
b5d482d0 RM |
25 | /* Perform *SET = MASK. Unused bits of *SET are set to 0. |
26 | Returns zero for success or -1 for errors (from sigaddset/sigemptyset). */ | |
27 | static inline int __attribute__ ((unused)) | |
28 | sigset_set_old_mask (sigset_t *set, int mask) | |
29 | { | |
30 | if (sizeof (__sigset_t) == sizeof (unsigned int)) | |
a1e56cd1 | 31 | *set = (unsigned int) mask; |
b5d482d0 RM |
32 | else |
33 | { | |
2e09a79a | 34 | unsigned int __sig; |
b5d482d0 RM |
35 | |
36 | if (__sigemptyset (set) < 0) | |
37 | return -1; | |
38 | ||
39 | for (__sig = 1; __sig < NSIG && __sig <= sizeof (mask) * 8; __sig++) | |
a9175662 | 40 | if (mask & __sigmask (__sig)) |
b5d482d0 RM |
41 | if (__sigaddset (set, __sig) < 0) |
42 | return -1; | |
43 | } | |
44 | return 0; | |
45 | } | |
46 | ||
47 | /* Return the sigmask corresponding to *SET. | |
48 | Unused bits of *SET are thrown away. */ | |
49 | static inline int __attribute__ ((unused)) | |
50 | sigset_get_old_mask (const sigset_t *set) | |
51 | { | |
52 | if (sizeof (sigset_t) == sizeof (unsigned int)) | |
53 | return (unsigned int) *set; | |
54 | else | |
55 | { | |
56 | unsigned int mask = 0; | |
2e09a79a | 57 | unsigned int sig; |
b5d482d0 RM |
58 | |
59 | for (sig = 1; sig < NSIG && sig <= sizeof (mask) * 8; sig++) | |
60 | if (__sigismember (set, sig)) | |
a9175662 | 61 | mask |= __sigmask (sig); |
b5d482d0 RM |
62 | |
63 | return mask; | |
64 | } | |
65 | } |