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linux(4): Reduce diffs between linux_rt_sendsig() and sendsig()

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No functional changes (except for the uprintf).

Discussed With:	kib
Sponsored By:	EPSRC
This commit is contained in:
Edward Tomasz Napierala 2022-01-04 14:13:03 +00:00
parent 562bc0a943
commit f7b04c53de
1 changed files with 5 additions and 3 deletions
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8
sys/amd64/linux/linux_sysvec.c
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@ -670,10 +670,10 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
/* Allocate space for the signal handler context. */
if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
SIGISMEMBER(psp->ps_sigonstack, sig)) {
sp = (caddr_t)td->td_sigstk.ss_sp + td->td_sigstk.ss_size -
sizeof(struct l_rt_sigframe);
sp = (caddr_t)td->td_sigstk.ss_sp + td->td_sigstk.ss_size;
} else
sp = (caddr_t)regs->tf_rsp - sizeof(struct l_rt_sigframe) - 128;
sp = (caddr_t)regs->tf_rsp - 128;
sp -= sizeof(struct l_rt_sigframe);
/* Align to 16 bytes. */
sfp = (struct l_rt_sigframe *)((unsigned long)sp & ~0xFul);
@ -695,6 +695,8 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
/* Copy the sigframe out to the user's stack. */
if (copyout(&sf, sfp, sizeof(*sfp)) != 0) {
uprintf("pid %d comm %s has trashed its stack, killing\n",
p->p_pid, p->p_comm);
PROC_LOCK(p);
sigexit(td, SIGILL);
}