kmodloader: make insert_module() idempotent

[project/ubox.git] / kmodloader.c

diff --git a/kmodloader.c b/kmodloader.c
index bcb213b..729027a 100644 (file)
--- a/kmodloader.c
+++ b/kmodloader.c
@@ -574,8 +574,11 @@ static int insert_module(char *path, const char *options)
        }
 
        data = malloc(s.st_size);
-       if (read(fd, data, s.st_size) == s.st_size)
+       if (read(fd, data, s.st_size) == s.st_size) {
                ret = syscall(__NR_init_module, data, (unsigned long) s.st_size, options);
+               if (errno == EEXIST)
+                       ret = 0;
+       }
        else
                ULOG_ERR("failed to read full module %s\n", path);