From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 3 Apr 2015 19:23:17 +0000 (-0400)
Subject: coredump: accept any write method
X-Git-Tag: v3.18.15~125
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a381f532a0a998cb464d6fdaf5956b1446014b1;p=thirdparty%2Fkernel%2Fstable.git

coredump: accept any write method

[ Upstream commit 86cc05840a0da1afcb6b8151b53f3b606457c91b ]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---

diff --git a/fs/coredump.c b/fs/coredump.c
index b5c86ffd50334..4c5866b948e77 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -657,7 +657,7 @@ void do_coredump(const siginfo_t *siginfo)
 		 */
 		if (!uid_eq(inode->i_uid, current_fsuid()))
 			goto close_fail;
-		if (!cprm.file->f_op->write)
+		if (!(cprm.file->f_mode & FMODE_CAN_WRITE))
 			goto close_fail;
 		if (do_truncate(cprm.file->f_path.dentry, 0, 0, cprm.file))
 			goto close_fail;