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| author | Mattias Andrée <maandree@kth.se> | 2020-06-01 00:06:51 +0200 |
|---|---|---|
| committer | Mattias Andrée <maandree@kth.se> | 2020-06-01 00:06:51 +0200 |
| commit | c316057f4ec5926b256da8b52b28e689da818b75 (patch) | |
| tree | 9d00f7fe7149065fbc8a02df8c5d1d327b01fbd1 | |
| parent | Things work as expected again (diff) | |
| download | sctrace-c316057f4ec5926b256da8b52b28e689da818b75.tar.gz sctrace-c316057f4ec5926b256da8b52b28e689da818b75.tar.bz2 sctrace-c316057f4ec5926b256da8b52b28e689da818b75.tar.xz | |
Silence output for initial tracee until it has successfully execed
Signed-off-by: Mattias Andrée <maandree@kth.se>
| -rw-r--r-- | sctrace.c | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -63,6 +63,8 @@ handle_syscall(struct process *proc) /* Print system call result */ print_systemcall_exit(proc); + proc->silent_until_execed -= (proc->silent_until_execed == 1); + /* Make process continue and stop at next syscall */ if (ptrace(PTRACE_SYSCALL, proc->pid, NULL, 0)) eprintf("ptrace PTRACE_SYSCALL %ju NULL 0:", (uintmax_t)proc->pid); @@ -71,6 +73,8 @@ handle_syscall(struct process *proc) break; case Exec: + proc->silent_until_execed -= (proc->silent_until_execed == 2); + /* fall through */ case VforkParent: if (ptrace(PTRACE_SYSCALL, proc->pid, NULL, 0)) eprintf("ptrace PTRACE_SYSCALL %ju NULL 0:", (uintmax_t)proc->pid); @@ -219,7 +223,7 @@ main(int argc, char **argv) outfp = outfile ? xfopen(outfile, "wb") : stderr; setup_trace_output(outfp, multiprocess); init_process_list(); - add_process(orig_pid, trace_options); + add_process(orig_pid, trace_options)->silent_until_execed = 2; for (;;) { pid = waitpid(-1, &status, __WALL | WCONTINUED); |