Commit fdd92b64 authored by Jeff Layton's avatar Jeff Layton
Browse files

fs: warn about impending deprecation of mandatory locks 



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@vger.kernel.org
Signed-off-by: default avatarJeff Layton <jlayton@kernel.org>
parent 3dbdb38e

fs/namespace.c

+5 −1
Original line number Diff line number Diff line
@@ -1716,8 +1716,12 @@ static inline bool may_mount(void) 
}



#ifdef	CONFIG_MANDATORY_FILE_LOCKING

static inline bool may_mandlock(void)

static bool may_mandlock(void)

{

	pr_warn_once("======================================================\n"

		     "WARNING: the mand mount option is being deprecated and\n"

		     "         will be removed in v5.15!\n"

		     "======================================================\n");

	return capable(CAP_SYS_ADMIN);

}

#else