UBIFS: respect MS_SILENT mount flag
When attempting to mount a non-ubifs formatted volume, lots of error
messages (including a stack dump) are thrown to the kernel log even if
the MS_SILENT mount flag is set.
Fix this by introducing adding an additional state-variable in
struct ubifs_info and suppress error messages in ubifs_read_node if
MS_SILENT is set.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index e18b988..2290d58 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -988,30 +988,32 @@
return err;
if (type != ch->node_type) {
- ubifs_err("bad node type (%d but expected %d)",
- ch->node_type, type);
+ ubifs_errc(c, "bad node type (%d but expected %d)",
+ ch->node_type, type);
goto out;
}
err = ubifs_check_node(c, buf, lnum, offs, 0, 0);
if (err) {
- ubifs_err("expected node type %d", type);
+ ubifs_errc(c, "expected node type %d", type);
return err;
}
l = le32_to_cpu(ch->len);
if (l != len) {
- ubifs_err("bad node length %d, expected %d", l, len);
+ ubifs_errc(c, "bad node length %d, expected %d", l, len);
goto out;
}
return 0;
out:
- ubifs_err("bad node at LEB %d:%d, LEB mapping status %d", lnum, offs,
- ubi_is_mapped(c->ubi, lnum));
- ubifs_dump_node(c, buf);
- dump_stack();
+ ubifs_errc(c, "bad node at LEB %d:%d, LEB mapping status %d", lnum,
+ offs, ubi_is_mapped(c->ubi, lnum));
+ if (!c->probing) {
+ ubifs_dump_node(c, buf);
+ dump_stack();
+ }
return -EINVAL;
}