+#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
- * is _not_ shifted left by eight (multiplied by 256), as it is in
- * POSIX/UNIX. To undo the surpise effect to the rest of Perl we
- * need this wrapper. (The rest of BeOS might be surprised because
- * of this, though.) */
+ * has the upper and lower bytes swapped compared with the usual
+ * POSIX/UNIX implementations. To undo the surpise 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(procedd_is, status_location, options);
- if (status_localtion)
- *status_location <<= 8;
+ 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;
+}