[DTrace-devel] [PATCH 1/2] USDT probes need provider spec ending with 0-9 or *

[eugene.loh at oracle.com]

From: Eugene Loh <eugene.loh at oracle.com>

We can avoid the globbing when the provider name is inconsistent
with any USDT probe.

Signed-off-by: Eugene Loh <eugene.loh at oracle.com>
---
 libdtrace/dt_pid.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libdtrace/dt_pid.c b/libdtrace/dt_pid.c
index 62060b592..3f9e3052b 100644
--- a/libdtrace/dt_pid.c
+++ b/libdtrace/dt_pid.c
@@ -1151,6 +1151,14 @@ dt_pid_create_usdt_probes(dtrace_probedesc_t *pdp, dtrace_hdl_t *dtp, dt_pcb_t *
 
 	assert(pcb != NULL);
 
+	/* If it cannot end with a pid, we're done. */
+	if (pdp->prv[0] != '\0') {
+		char lastchar = pdp->prv[strlen(pdp->prv) - 1];
+
+		if (lastchar != '*' && !isdigit(lastchar))
+			return 0;
+	}
+
 	/* If it's strictly a pid provider, we're done. */
 	if (strncmp(pdp->prv, "pid", 3) == 0 && isdigit(pdp->prv[3])) {
 		const char *p = &pdp->prv[4];
-- 
2.43.5