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-rw-r--r--sctrace.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/sctrace.c b/sctrace.c
index 43afce7..34bd3ac 100644
--- a/sctrace.c
+++ b/sctrace.c
@@ -68,6 +68,14 @@ handle_syscall(struct process *proc)
proc->state = Normal;
break;
+ case Exec:
+ if (ptrace(PTRACE_SYSCALL, proc->pid, NULL, 0))
+ eprintf("ptrace PTRACE_SYSCALL %ju NULL 0", (uintmax_t)proc->pid);
+ if (ptrace(PTRACE_SYSCALL, proc->pid, NULL, 0))
+ eprintf("ptrace PTRACE_SYSCALL %ju NULL 0", (uintmax_t)proc->pid);
+ proc->state = Normal;
+ break;
+
case VforkParent:
if (ptrace(PTRACE_SYSCALL, proc->pid, NULL, 0))
eprintf("ptrace PTRACE_SYSCALL %ju NULL 0", (uintmax_t)proc->pid);
@@ -92,11 +100,10 @@ main(int argc, char **argv)
FILE *outfp = stderr;
const char *num = NULL;
int status, exit_value = 0, trace_event, with_argv0 = 0;
- unsigned long int trace_options = PTRACE_O_EXITKILL | PTRACE_O_TRACESYSGOOD;
+ unsigned long int trace_options = PTRACE_O_EXITKILL | PTRACE_O_TRACESYSGOOD | PTRACE_O_TRACEEXEC;
struct process *proc, *proc2;
unsigned long int event;
- /* TODO add support for exec after vfork */
/* TODO add option to trace threads (-t) */
/* TODO add option to trace signals (-s) */
ARGBEGIN {
@@ -198,7 +205,7 @@ have_outfp:
proc2 = proc->continue_on_exit;
remove_process(proc);
if (proc2) {
- tprintf(proc2, "Process continue do to exit of vfork child\n");
+ tprintf(proc2, "Process continues due to exit of vfork child\n");
handle_syscall(proc2);
}
@@ -234,6 +241,18 @@ have_outfp:
handle_syscall(proc2);
break;
+ case PTRACE_EVENT_EXEC:
+ proc->state = Exec;
+ handle_syscall(proc);
+ proc2 = proc->continue_on_exit;
+ if (proc2) {
+ proc->continue_on_exit = NULL;
+ proc2->vfork_waiting_on = NULL;
+ tprintf(proc2, "Process continues due to exec(2) of vfork child\n");
+ handle_syscall(proc2);
+ }
+ break;
+
default:
goto print_signal;
}