We've had CONFIG_MANDATORY_FILE_LOCKING since 2015 and a lot of distros
have disabled it. Warn the stragglers that still use "-o mand" that
we'll be dropping support for that mount option.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/namespace.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/fs/namespace.c b/fs/namespace.c
index ab4174a3c802..ffab0bb1e649 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1716,8 +1716,16 @@ static inline bool may_mount(void)
}
#ifdef CONFIG_MANDATORY_FILE_LOCKING
+static bool warned_mand;
static inline bool may_mandlock(void)
{
+ if (!warned_mand) {
+ warned_mand = true;
+ pr_warn("======================================================\n");
+ pr_warn("WARNING: the mand mount option is being deprecated and\n");
+ pr_warn(" will be removed in v5.15!\n");
+ pr_warn("======================================================\n");
+ }
return capable(CAP_SYS_ADMIN);
}
#else
--
2.31.1
