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Implement signal() via sigaction() and get rid of sys$signal().

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This commit is contained in:
Andreas Kling 2018-11-28 22:27:32 +01:00
parent d90104f9e0
commit 464a16afa2
5 changed files with 9 additions and 19 deletions
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15
LibC/signal.cpp
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@ -20,13 +20,16 @@ int killpg(int pgrp, int sig)
sighandler_t signal(int signum, sighandler_t handler)
{
sighandler_t old_handler = (sighandler_t)Syscall::invoke(Syscall::SC_signal, (dword)signum, (dword)handler);
if (old_handler == SIG_ERR) {
errno = EINVAL;
struct sigaction new_act;
struct sigaction old_act;
new_act.sa_handler = handler;
new_act.sa_flags = 0;
new_act.sa_mask = 0;
new_act.sa_restorer = nullptr;
int rc = sigaction(signum, &new_act, &old_act);
if (rc < 0)
return SIG_ERR;
}
errno = 0;
return old_handler;
return old_act.sa_handler;
}
int sigaction(int signum, const struct sigaction* act, struct sigaction* old_act)