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-rw-r--r--winsup/cygwin/winsup.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/winsup/cygwin/winsup.h b/winsup/cygwin/winsup.h
index dcf7bff27..bf7315413 100644
--- a/winsup/cygwin/winsup.h
+++ b/winsup/cygwin/winsup.h
@@ -145,6 +145,10 @@ extern "C" void __stdcall do_exit (int) __attribute__ ((noreturn));
/* UID/GID */
void uinfo_init (void);
+#define ILLEGAL_UID ((__uid16_t)-1)
+#define ILLEGAL_GID ((__gid16_t)-1)
+#define ILLEGAL_SEEK ((__off32_t)-1)
+
/* various events */
void events_init (void);
void events_terminate (void);