The ptrace(2) man page says that PTRACE_SEIZE, PTRACE_LISTEN, and PTRACE_INTERRUPT was introduced in Linux 3.4. In fact, this was added in 3.1: $ git diff v3.0 v3.1 include/linux/ptrace.h | grep SEIZE +#define PTRACE_SEIZE 0x4206 +/* flags in @data for PTRACE_SEIZE */ +#define PTRACE_SEIZE_DEVEL 0x80000000 /* temp flag for development */ +#define PT_SEIZED 0x00010000 /* SEIZE used, enable new behavior */ + if (child->ptrace & PT_SEIZED) -- Patrick Donnelly -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html