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#include "beos/beosish.h"
#undef waitpid
#undef kill
#undef sigaction
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <OS.h>
/* In BeOS 5.0 the waitpid() seems to misbehave in that the status
* has the upper and lower bytes swapped compared with the usual
* POSIX/UNIX implementations. To undo the surprise effect to the
* rest of Perl we need this wrapper. (The rest of BeOS might be
* surprised because of this, though.) */
pid_t beos_waitpid(pid_t process_id, int *status_location, int options) {
pid_t got = waitpid(process_id, status_location, options);
if (status_location)
*status_location =
(*status_location & 0x00FF) << 8 |
(*status_location & 0xFF00) >> 8;
return got;
}
/* BeOS kill() doesn't like the combination of the pseudo-signal 0 and
* specifying a process group (i.e. pid < -1 || pid == 0). We work around
* by changing pid to the respective process group leader. That should work
* well enough in most cases. */
int beos_kill(pid_t pid, int sig)
{
if (sig == 0) {
if (pid == 0) {
/* it's our process group */
pid = getpgrp();
} else if (pid < -1) {
/* just address the process group leader */
pid = -pid;
}
}
return kill(pid, sig);
}
/* sigaction() should fail, if trying to ignore or install a signal handler
* for a signal that cannot be caught or ignored. The BeOS R5 sigaction()
* doesn't return an error, though. */
int beos_sigaction(int sig, const struct sigaction *act,
struct sigaction *oact)
{
int result = sigaction(sig, act, oact);
if (result == 0 && act && act->sa_handler != SIG_DFL
&& act->sa_handler != SIG_ERR && (sig == SIGKILL || sig == SIGSTOP)) {
result = -1;
errno = EINVAL;
}
return result;
}
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