6999b62af8
. create signals-related struct message type to store sigset_t directly . create notify-specific message types, so the generic NOTIFY_ARG doesn't exist anymore Change-Id: I26494b8e0f27718628aab4c1f37eca924ad57cbf
37 lines
939 B
C
37 lines
939 B
C
#include "namespace.h"
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#include <sys/cdefs.h>
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#include <lib.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/signal.h>
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#include <machine/signal.h>
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#ifdef __weak_alias
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__weak_alias(sigreturn, _sigreturn)
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#endif
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int sigreturn(struct sigcontext *scp)
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{
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sigset_t set;
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/* The message can't be on the stack, because the stack will vanish out
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* from under us. The send part of sendrec will succeed, but when
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* a message is sent to restart the current process, who knows what will
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* be in the place formerly occupied by the message?
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*/
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static message m;
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memset(&m, 0, sizeof(m));
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/* Protect against race conditions by blocking all interrupts. */
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sigfillset(&set); /* splhi */
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sigprocmask(SIG_SETMASK, &set, (sigset_t *) NULL);
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m.SIG_MAP = scp->sc_mask;
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m.SIG_FLAGS = scp->sc_flags;
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m.SIG_CTXT_PTR = (char *) scp;
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return(_syscall(PM_PROC_NR, SIGRETURN, &m)); /* normally this doesn't return */
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}
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