Version 2.5.7

[lttng-ust.git] / liblttng-ust / compat.h

diff --git a/liblttng-ust/compat.h b/liblttng-ust/compat.h
index 19d4da828b67cc793b056a46933d3b332c74b870..43b2223e43b84ad5c5dc373a8c327eb365fd32f4 100644 (file)
--- a/liblttng-ust/compat.h
+++ b/liblttng-ust/compat.h
@@ -19,17 +19,52 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <sys/syscall.h>
+/*
+ * lttng_ust_getprocname.
+ */
+#ifdef __linux__
+
+#include <sys/prctl.h>
+
+#define LTTNG_UST_PROCNAME_LEN 17
+
+static inline
+void lttng_ust_getprocname(char *name)
+{
+       (void) prctl(PR_GET_NAME, (unsigned long) name, 0, 0, 0);
+}
+
+#elif defined(__FreeBSD__)
+#include <stdlib.h>
+#include <string.h>
 
-#ifdef __UCLIBC__
-#define __getcpu(cpu, node, cache)     syscall(__NR_getcpu, cpu, node, cache)
+/*
+ * Limit imposed by Linux UST-sessiond ABI.
+ */
+#define LTTNG_UST_PROCNAME_LEN 17
+
+/*
+ * Acts like linux prctl, the string is not necessarily 0-terminated if
+ * 16-byte long.
+ */
 static inline
-int sched_getcpu(void)
+void lttng_ust_getprocname(char *name)
 {
-       int c, s;
+       const char *bsd_name;
 
-       s = __getcpu(&c, NULL, NULL);
-       return (s == -1) ? s : c;
+       bsd_name = getprogname();
+       if (!bsd_name)
+               name[0] = '\0';
+       else
+               strncpy(name, bsd_name, LTTNG_UST_PROCNAME_LEN - 1);
 }
-#endif /* __UCLIBC__ */
+
+#endif
+
+#include <errno.h>
+
+#ifndef ENODATA
+#define ENODATA        ENOMSG
+#endif
+
 #endif /* _UST_COMPAT_H */