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-rw-r--r--src/linux/ptrace.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/linux/ptrace.c b/src/linux/ptrace.c
new file mode 100644
index 00000000..83b8022b
--- /dev/null
+++ b/src/linux/ptrace.c
@@ -0,0 +1,25 @@
+#include <sys/ptrace.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include "syscall.h"
+
+long ptrace(int req, ...)
+{
+ va_list ap;
+ pid_t pid;
+ void *addr, *data, *addr2;
+ long ret, result;
+
+ va_start(ap, req);
+ pid = va_arg(ap, pid_t);
+ addr = va_arg(ap, void *);
+ data = va_arg(ap, void *);
+ addr2 = va_arg(ap, void *);
+ va_end(ap);
+
+ if (req-1U < 3) data = &result;
+ ret = syscall(SYS_ptrace, req, pid, addr, data, addr2);
+
+ if (ret < 0 || req-1U >= 3) return ret;
+ return result;
+}