diff options
Diffstat (limited to 'runtime/staprun/ctl.c')
| -rw-r--r-- | runtime/staprun/ctl.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/runtime/staprun/ctl.c b/runtime/staprun/ctl.c index 9336631c..a217d270 100644 --- a/runtime/staprun/ctl.c +++ b/runtime/staprun/ctl.c @@ -18,14 +18,18 @@ int init_ctl_channel(void) struct statfs st; if (statfs("/sys/kernel/debug", &st) == 0 && (int) st.f_type == (int) DEBUGFS_MAGIC) - sprintf (buf, "/sys/kernel/debug/systemtap_%d/cmd", getpid()); + sprintf (buf, "/sys/kernel/debug/systemtap/%s/cmd", modname); else - sprintf (buf, "/proc/systemtap_%d/cmd", getpid()); + sprintf (buf, "/proc/systemtap/%s/cmd", modname); dbug("Opening %s\n", buf); control_channel = open(buf, O_RDWR); if (control_channel < 0) { - fprintf(stderr, "ERROR: couldn't open control channel %s: errcode = %s\n", buf, strerror(errno)); + if (attach_mod) + fprintf (stderr, "ERROR: Cannot connect to module \"%s\".\n", modname); + else + fprintf (stderr, "ERROR: couldn't open control channel %s\n", buf); + fprintf (stderr, "errcode = %s\n", strerror(errno)); return -1; } return 0; |