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Matheus
27 lines
557 B
C
27 lines
557 B
C
#include <kernel/syscalls.h>
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#include <kernel/signal.h>
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#include <logging.h>
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syscallret_t syscall_sigsuspend(context_t *, sigset_t *umask) {
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syscallret_t ret = {
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.ret = -1
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};
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sigset_t mask;
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sigset_t old;
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ret.errno = usercopy_fromuser(&mask, umask, sizeof(sigset_t));
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if (ret.errno)
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return ret;
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signal_changemask(_cpu()->thread, SIG_SETMASK, &mask, &old);
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sched_preparesleep(true);
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__assert(sched_yield() == SCHED_WAKEUP_REASON_INTERRUPTED);
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signal_changemask(_cpu()->thread, SIG_SETMASK, &old, NULL);
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ret.errno = EINTR;
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return ret;
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}
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