Messages in this thread | | | Date | Mon, 26 Nov 2018 15:56:43 +0100 | From | Oleg Nesterov <> | Subject | Re: [PATCH RESEND v3 1/3] ptrace: pass type of a syscall-stop in ptrace_message |
| |
On 11/25, Elvira Khabirova wrote: > > + * These values are stored in task->ptrace_message by tracehook_report_syscall_* > + * to describe current syscall-stop. > + * > + * Values for these constants are chosen so that they do not appear > + * in task->ptrace_message by other means. > + */ > +#define PTRACE_EVENTMSG_SYSCALL_ENTRY 0x80000000U > +#define PTRACE_EVENTMSG_SYSCALL_EXIT 0x90000000U
Stupid question, why not
#define PTRACE_EVENT_SYSCALL_ENTRY 8 #define PTRACE_EVENT_SYSCALL_EXIT 9
right after other PTRACE_EVENT_* constants?
The next 3/3 tries to detect PTRACE_EVENT_SECCOMP case anyway, so I am not sure I understand what "do not appear in task->ptrace_message by other means" actually means...
Oleg.
| |