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Use correct value for _NSIG

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User processes can send signals with number up to _NSIG. There are a few
signal numbers above that used by the kernel, but should explicitly not
be included in the range or range checks in PM will fail.

The system processes use a different version of sigaddset, sigdelset,
sigemptyset, sigfillset, and sigismember which does not include a range
check on signal numbers (as opposed to the normal functions used by normal
processes).

This patch unbreaks test37 when the boot image is compiled with GCC/Clang.
This commit is contained in:
Thomas Veerman
2012-01-16 11:42:29 +00:00
parent a282e942bf
commit a6d0ee24c3
8 changed files with 61 additions and 57 deletions
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6
kernel/system.c
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@@ -374,7 +374,7 @@ PUBLIC void send_sig(endpoint_t ep, int sig_nr)
panic("send_sig to empty process: %d", ep);
rp = proc_addr(proc_nr);
(void) sigaddset(&priv(rp)->s_sig_pending, sig_nr);
sigaddset(&priv(rp)->s_sig_pending, sig_nr);
mini_notify(proc_addr(SYSTEM), rp->p_endpoint);
}
@@ -425,14 +425,14 @@ int sig_nr; /* signal to be sent */
panic("cause_sig: sig manager %d gets lethal signal %d for itself",
rp->p_endpoint, sig_nr);
}
(void) sigaddset(&priv(rp)->s_sig_pending, sig_nr);
sigaddset(&priv(rp)->s_sig_pending, sig_nr);
send_sig(rp->p_endpoint, SIGKSIGSM);
return;
}
/* Check if the signal is already pending. Process it otherwise. */
if (! sigismember(&rp->p_pending, sig_nr)) {
(void) sigaddset(&rp->p_pending, sig_nr);
sigaddset(&rp->p_pending, sig_nr);
if (! (RTS_ISSET(rp, RTS_SIGNALED))) { /* other pending */
RTS_SET(rp, RTS_SIGNALED | RTS_SIG_PENDING);
send_sig(sig_mgr, SIGKSIG);