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https://github.com/fluencelabs/musl
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016a5dc192
otherwise we cannot support an application's desire to use asynchronous cancellation within the callback function. this change also slightly debloats pthread_create.c.
31 lines
653 B
C
31 lines
653 B
C
#include <signal.h>
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#include <errno.h>
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#include "syscall.h"
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#include "libc.h"
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#include "pthread_impl.h"
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int __libc_sigprocmask(int how, const sigset_t *set, sigset_t *old)
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{
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return syscall(SYS_rt_sigprocmask, how, set, old, 8);
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}
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int __sigprocmask(int how, const sigset_t *set, sigset_t *old)
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{
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sigset_t tmp;
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if (how > 2U) {
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errno = EINVAL;
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return -1;
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}
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/* Disallow blocking thread control signals */
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if (set && how != SIG_UNBLOCK) {
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tmp = *set;
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set = &tmp;
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sigdelset(&tmp, SIGCANCEL);
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sigdelset(&tmp, SIGSYSCALL);
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sigdelset(&tmp, SIGTIMER);
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}
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return __libc_sigprocmask(how, set, old);
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}
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weak_alias(__sigprocmask, sigprocmask);
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