From 555a2af73f7c97b4745f93d5f14dbbe73ebfaa5d Mon Sep 17 00:00:00 2001
From: Andre Maroneze <andre.maroneze@cea.fr>
Date: Thu, 6 Feb 2025 09:18:58 +0100
Subject: [PATCH] [Libc] add some POSIX constants in limits.h
---
share/libc/limits.h | 54 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/share/libc/limits.h b/share/libc/limits.h
index a545c01f67..4ae39a3106 100644
--- a/share/libc/limits.h
+++ b/share/libc/limits.h
@@ -223,4 +223,58 @@
# define IOV_MAX 255
#endif
+// Maximum number of user trace event type identifiers that may simultaneously
+// exist in a traced process, including the predefined user trace event
+// POSIX_TRACE_UNNAMED_USER_EVENT.
+// Minimum Acceptable Value: _POSIX_TRACE_USER_EVENT_MAX
+#ifdef __FC_TRACE_USER_EVENT_MAX
+# if __FC_TRACE_USER_EVENT_MAX >= 0
+ _Static_assert(__FC_TRACE_USER_EVENT_MAX >= _POSIX_TRACE_USER_EVENT_MAX, "__FC_TRACE_USER_EVENT_MAX is too small (" __fc_expand(__FC_TRACE_USER_EVENT_MAX) "): minimal value is " __fc_expand(_POSIX_TRACE_USER_EVENT_MAX));
+# define TRACE_USER_EVENT_MAX __FC_TRACE_USER_EVENT_MAX
+# else
+# undef TRACE_USER_EVENT_MAX
+# endif
+#else
+# define TRACE_USER_EVENT_MAX 64
+#endif
+
+// Maximum length of the trace event name (not including the terminating null).
+// Minimum Acceptable Value: _POSIX_TRACE_EVENT_NAME_MAX
+#ifdef __FC_TRACE_EVENT_NAME_MAX
+# if __FC_TRACE_EVENT_NAME_MAX >= 0
+ _Static_assert(__FC_TRACE_EVENT_NAME_MAX >= _POSIX_TRACE_EVENT_NAME_MAX, "__FC_TRACE_EVENT_NAME_MAX is too small (" __fc_expand(__FC_TRACE_EVENT_NAME_MAX) "): minimal value is " __fc_expand(_POSIX_TRACE_EVENT_NAME_MAX));
+# define TRACE_EVENT_NAME_MAX __FC_TRACE_EVENT_NAME_MAX
+# else
+# undef TRACE_EVENT_NAME_MAX
+# endif
+#else
+# define TRACE_EVENT_NAME_MAX 30
+#endif
+
+// Maximum length of the trace generation version string or of the trace stream name (not including the terminating null).
+// Minimum Acceptable Value: _POSIX_TRACE_NAME_MAX
+#ifdef __FC_TRACE_NAME_MAX
+# if __FC_TRACE_NAME_MAX >= 0
+ _Static_assert(__FC_TRACE_NAME_MAX >= _POSIX_TRACE_NAME_MAX, "__FC_TRACE_NAME_MAX is too small (" __fc_expand(__FC_TRACE_NAME_MAX) "): minimal value is " __fc_expand(_POSIX_TRACE_NAME_MAX));
+# define TRACE_NAME_MAX __FC_TRACE_NAME_MAX
+# else
+# undef TRACE_NAME_MAX
+# endif
+#else
+# define TRACE_NAME_MAX 8
+#endif
+
+// The size of the storage required for a login name, in bytes, including the terminating null.
+// Minimum Acceptable Value: _POSIX_LOGIN_NAME_MAX
+#ifdef __FC_LOGIN_NAME_MAX
+# if __FC_LOGIN_NAME_MAX >= 0
+ _Static_assert(__FC_LOGIN_NAME_MAX >= _POSIX_LOGIN_NAME_MAX, "__FC_LOGIN_NAME_MAX is too small (" __fc_expand(__FC_LOGIN_NAME_MAX) "): minimal value is " __fc_expand(_POSIX_LOGIN_NAME_MAX));
+# define LOGIN_NAME_MAX __FC_LOGIN_NAME_MAX
+# else
+# undef LOGIN_NAME_MAX
+# endif
+#else
+# define LOGIN_NAME_MAX 8
+#endif
+
#endif
--
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