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Make linux(4) warn about unsupported SA_ flags.

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MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D25453
This commit is contained in:
Edward Tomasz Napierala 2020-06-27 15:50:35 +00:00
parent a39cdcd7e7
commit d5629eb216
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=362699
1 changed files with 39 additions and 7 deletions
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46
sys/compat/linux/linux_signal.c
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@ -63,24 +63,56 @@ static void sicode_to_lsicode(int si_code, int *lsi_code);
static void
linux_to_bsd_sigaction(l_sigaction_t *lsa, struct sigaction *bsa)
{
unsigned long flags;
linux_to_bsd_sigset(&lsa->lsa_mask, &bsa->sa_mask);
bsa->sa_handler = PTRIN(lsa->lsa_handler);
bsa->sa_flags = 0;
if (lsa->lsa_flags & LINUX_SA_NOCLDSTOP)
flags = lsa->lsa_flags;
if (lsa->lsa_flags & LINUX_SA_NOCLDSTOP) {
flags &= ~LINUX_SA_NOCLDSTOP;
bsa->sa_flags |= SA_NOCLDSTOP;
if (lsa->lsa_flags & LINUX_SA_NOCLDWAIT)
}
if (lsa->lsa_flags & LINUX_SA_NOCLDWAIT) {
flags &= ~LINUX_SA_NOCLDWAIT;
bsa->sa_flags |= SA_NOCLDWAIT;
if (lsa->lsa_flags & LINUX_SA_SIGINFO)
}
if (lsa->lsa_flags & LINUX_SA_SIGINFO) {
flags &= ~LINUX_SA_SIGINFO;
bsa->sa_flags |= SA_SIGINFO;
if (lsa->lsa_flags & LINUX_SA_ONSTACK)
#ifdef notyet
/*
* XXX: We seem to be missing code to convert
* some of the fields in ucontext_t.
*/
linux_msg(curthread,
"partially unsupported sigaction flag SA_SIGINFO");
#endif
}
if (lsa->lsa_flags & LINUX_SA_RESTORER) {
flags &= ~LINUX_SA_RESTORER;
/* XXX: We might want to handle it; see Linux sigreturn(2). */
}
if (lsa->lsa_flags & LINUX_SA_ONSTACK) {
flags &= ~LINUX_SA_ONSTACK;
bsa->sa_flags |= SA_ONSTACK;
if (lsa->lsa_flags & LINUX_SA_RESTART)
}
if (lsa->lsa_flags & LINUX_SA_RESTART) {
flags &= ~LINUX_SA_RESTART;
bsa->sa_flags |= SA_RESTART;
if (lsa->lsa_flags & LINUX_SA_ONESHOT)
}
if (lsa->lsa_flags & LINUX_SA_ONESHOT) {
flags &= ~LINUX_SA_ONESHOT;
bsa->sa_flags |= SA_RESETHAND;
if (lsa->lsa_flags & LINUX_SA_NOMASK)
}
if (lsa->lsa_flags & LINUX_SA_NOMASK) {
flags &= ~LINUX_SA_NOMASK;
bsa->sa_flags |= SA_NODEFER;
}
if (flags != 0)
linux_msg(curthread, "unsupported sigaction flag %#lx", flags);
}
static void