From b416ed97c45e86595d0765efa7d3ca44246083b0 Mon Sep 17 00:00:00 2001 From: Michal Sojka Date: Tue, 12 Sep 2017 13:12:39 +0200 Subject: [PATCH] utrace: Support tracing multi-threaded processes and vfork Signed-off-by: Michal Sojka --- trace/trace.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/trace/trace.c b/trace/trace.c index f882c2e..4c25a4f 100644 --- a/trace/trace.c +++ b/trace/trace.c @@ -163,7 +163,9 @@ static void tracer_cb(struct uloop_process *c, int ret) } } tracee->in_syscall = !tracee->in_syscall; - } else if ((ret >> 8) == (SIGTRAP | (PTRACE_EVENT_FORK << 8))) { + } else if ((ret >> 8) == (SIGTRAP | (PTRACE_EVENT_FORK << 8)) || + (ret >> 8) == (SIGTRAP | (PTRACE_EVENT_VFORK << 8)) || + (ret >> 8) == (SIGTRAP | (PTRACE_EVENT_CLONE << 8))) { struct tracee *child = calloc(1, sizeof(struct tracee)); ptrace(PTRACE_GETEVENTMSG, c->pid, 0, &child->proc.pid); @@ -254,7 +256,9 @@ int main(int argc, char **argv, char **envp) ptrace(PTRACE_SETOPTIONS, child, 0, PTRACE_O_TRACESYSGOOD | - PTRACE_O_TRACEFORK); + PTRACE_O_TRACEFORK | + PTRACE_O_TRACEVFORK | + PTRACE_O_TRACECLONE); ptrace(PTRACE_SYSCALL, child, 0, 0); uloop_init(); -- 2.25.1