Add C implementation for FreeBSD

restartable.c

@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <err.h>
+#include <fcntl.h>
+#include <kvm.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/types.h>
+#include <sys/user.h>
+#include <libutil.h>
+
+void
+print_proc(const struct kinfo_proc *kp) {
+	struct kinfo_vmentry *vmmap;
+	int i, count;
+
+	vmmap = kinfo_getvmmap(kp->ki_pid, &count);
+	if (vmmap == NULL && errno != EPERM)
+		err(1, "kinfo_getvmmap(): %d", kp->ki_pid);
+
+	for (i = 0; i < count; i++)
+		if (vmmap[i].kve_type == KVME_TYPE_VNODE && vmmap[i].kve_protection & VM_PROT_EXECUTE && vmmap[i].kve_path[0] == '\0')
+			printf("%d\t%d\t%d\t%s\t%s\n", kp->ki_pid, kp->ki_ppid, kp->ki_ruid, kp->ki_login, kp->ki_comm);
+
+	free(vmmap);
+}
+
+int
+print_all(void) {
+	struct kinfo_proc *procs;
+	int count;
+
+	procs = kinfo_getallproc(&count);
+	if (procs == NULL)
+		err(1, "kinfo_getallproc()");
+
+	for (int i = 0; i < count; i++)
+		print_proc(&procs[i]);
+
+	free(procs);
+	return 0;
+}
+
+int
+main(void) {
+	printf("PID\tPPID\tUID\tUser\tCommand\n");
+	exit(print_all() != 0);
+}