[PATCH 5.19 001/717] Revert "fs: check FMODE_LSEEK to control internal pipe splicing"

Greg Kroah-Hartman
2022-10-22T07:34:11Z

This reverts commit fd0a6e99b61e6c08fa5cf585d54fd956f70c73a6.

Which was upstream commit 97ef77c52b789ec1411d360ed99dca1efe4b2c81.

The commit is missing dependencies and breaks NFS tests, remove it for
now.

Reported-by: Saeed Mirzamohammadi <saeed.mirzamohammadi@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/splice.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/splice.c b/fs/splice.c
index 93a2c9bf6249..047b79db8eb5 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -814,15 +814,17 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,
{
struct pipe_inode_info *pipe;
long ret, bytes;
+ umode_t i_mode;
size_t len;
int i, flags, more;

/*
- * We require the input to be seekable, as we don't want to randomly
- * drop data for eg socket -> socket splicing. Use the piped splicing
- * for that!
+ * We require the input being a regular file, as we don't want to
+ * randomly drop data for eg socket -> socket splicing. Use the
+ * piped splicing for that!
*/
- if (unlikely(!(in->f_mode & FMODE_LSEEK)))
+ i_mode = file_inode(in)->i_mode;
+ if (unlikely(!S_ISREG(i_mode) && !S_ISBLK(i_mode)))
return -EINVAL;

/*
--
2.35.1