X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-context-procname.c;h=b9bae82eba91be79fdd2ca1749fe2e5f2066b570;hb=4c1ee94e5ef9ac3efb4a036108a9ff4eb24c238c;hp=b737084bf69aae013cee43c11e7ffa3484067ce5;hpb=e4486ebcdee39064492ed386b11008191fbbad17;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-context-procname.c b/liblttng-ust/lttng-context-procname.c
index b737084b..b9bae82e 100644
--- a/liblttng-ust/lttng-context-procname.c
+++ b/liblttng-ust/lttng-context-procname.c
@@ -7,11 +7,13 @@
  * Dual LGPL v2.1/GPL v2 license.
  */
 
+#include <sys/prctl.h>
 #include <lttng/ust-events.h>
 #include <lttng/ust-tracer.h>
 #include <lttng/ringbuffer-config.h>
 #include <assert.h>
-#include "compat.h"
+
+#define PROCNAME_LEN	17	/* includes \0 */
 
 /*
  * We cache the result to ensure we don't trigger a system call for
@@ -24,9 +26,12 @@ static char cached_procname[17];
 static inline
 char *wrapper_getprocname(void)
 {
+	int ret;
+
 	if (caa_unlikely(!cached_procname[0])) {
-		lttng_ust_getprocname(cached_procname);
-		cached_procname[LTTNG_UST_PROCNAME_LEN - 1] = '\0';
+		ret = prctl(PR_GET_NAME, (unsigned long) cached_procname,
+			0, 0, 0);
+		assert(!ret);
 	}
 	return cached_procname;
 }
@@ -41,7 +46,7 @@ size_t procname_get_size(size_t offset)
 {
 	size_t size = 0;
 
-	size += LTTNG_UST_PROCNAME_LEN;
+	size += PROCNAME_LEN;
 	return size;
 }
 
@@ -53,7 +58,7 @@ void procname_record(struct lttng_ctx_field *field,
 	char *procname;
 
 	procname = wrapper_getprocname();
-	chan->ops->event_write(ctx, procname, LTTNG_UST_PROCNAME_LEN);
+	chan->ops->event_write(ctx, procname, PROCNAME_LEN);
 }
 
 int lttng_add_procname_to_ctx(struct lttng_ctx **ctx)
@@ -76,7 +81,7 @@ int lttng_add_procname_to_ctx(struct lttng_ctx **ctx)
 	field->event_field.type.u.array.elem_type.u.basic.integer.reverse_byte_order = 0;
 	field->event_field.type.u.array.elem_type.u.basic.integer.base = 10;
 	field->event_field.type.u.array.elem_type.u.basic.integer.encoding = lttng_encode_UTF8;
-	field->event_field.type.u.array.length = LTTNG_UST_PROCNAME_LEN;
+	field->event_field.type.u.array.length = PROCNAME_LEN;
 	field->get_size = procname_get_size;
 	field->record = procname_record;
 	return 0;