Set GIT_EOSERR when the OS errno should be consulted

This error code indicates the OS error code has a better value
describing the last error, as it is likely a network or local
file IO problem identified by a C library function call.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/errors.h b/src/errors.h
index caebc63b3..ab415d59c 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -11,6 +11,11 @@ GIT_INLINE(int) git_int_error(int code)
 	return code;
 }
 
+GIT_INLINE(int) git_os_error(void)
+{
+	return git_int_error(GIT_EOSERR);
+}
+
 GIT_INLINE(void) *git_ptr_error(int code)
 {
 	git_errno = code;