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youki/hack/debug.bt
Toru Komatsu 75718d7fad
Named process for debugging. (#1846)
Signed-off-by: utam0k <k0ma@utam0k.jp>
2023-04-24 13:34:02 -07:00

53 lines
1.3 KiB
Plaintext
Executable File

#!/usr/bin/env bpftrace
BEGIN
{
printf("Tracing Youki syscalls... Hit Ctrl-C to end.\n");
printf("%-12s %15s %-8s %-9s %s\n", "TIME", "COMMAND", "PID", "EVENT", "CONTENT");
}
tracepoint:syscalls:sys_enter_write
/comm == "4"|| comm == "youki" || comm == "youki:[1:INTER]" || comm == "youki:[2:INIT]"/
{
$s = str(args->buf, args->count);
if ($s != "\n") {
printf("%-12ld %15s %-8d %-9s ", elapsed , comm, pid, "write");
printf("fd=%d, %s\n", args->fd, $s);
}
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
/comm == "4"|| comm == "youki" || comm == "youki:[1:INTER]" || comm == "youki:[2:INIT]"/
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tracepoint:syscalls:sys_exit_openat
/@filename[tid]/
{
$ret = args->ret;
$fd = $ret >= 0 ? $ret : -1;
$errno = $ret >= 0 ? 0 : - $ret;
printf("%-12ld %15s %-8d %-9s ", elapsed , comm, pid, "open");
printf("errno=%d, fd=%d, file=%s\n", $errno, $fd, str(@filename[tid]));
delete(@filename[tid]);
}
tracepoint:syscalls:sys_enter_clone3
/comm == "4"|| comm == "youki" || comm == "youki:[1:INTER]" || comm == "youki:[2:INIT]"/
{
printf("%-12ld %15s %-8d %-9s ", elapsed , comm, pid, "clone3");
}
END
{
clear(@filename);
printf("Tracing ended.\n");
}