config.c: fix writing config files on Windows network shares

Renaming to an existing file doesn't work on Windows network shares if the target file is open. munmap() the old config file before commit_lock_file. This fixes git-for-windows#226. Signed-off-by: Karsten Blees <[email protected]> Signed-off-by: Johannes Schindelin <[email protected]>
dscho · Jul 18, 2015 · acee5f8 · acee5f8
1 parent 410d6fa
commit acee5f8
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/config.c b/config.c
@@ -2135,6 +2135,9 @@ int git_config_set_multivar_in_file(const char *config_filename,
 					  contents_sz - copy_begin) <
 			    contents_sz - copy_begin)
 				goto write_err_out;
+
+		munmap(contents, contents_sz);
+		contents = NULL;
 	}
 
 	if (commit_lock_file(lock) < 0) {