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authorChangli Gao <xiaosuo@gmail.com>2010-06-29 13:10:36 +0200
committerJens Axboe <jaxboe@fusionio.com>2010-06-30 08:12:37 +0200
commit19c9a49b432f245c6293508d164a4350f1f2c601 (patch)
treea051c7c6c4c36d03e304c33a549da7ff4765d425 /fs
parent2cb4b05e7647891b46b91c07c9a60304803d1688 (diff)
downloadlinux-19c9a49b432f245c6293508d164a4350f1f2c601.tar.bz2
splice: check f_mode for seekable file
check f_mode for seekable file As a seekable file is allowed without a llseek function, so the old way isn't work any more. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> ---- fs/splice.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/splice.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/splice.c b/fs/splice.c
index 41900496d3bb..efdbfece9932 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1372,8 +1372,7 @@ static long do_splice(struct file *in, loff_t __user *off_in,
if (off_in)
return -ESPIPE;
if (off_out) {
- if (!out->f_op || !out->f_op->llseek ||
- out->f_op->llseek == no_llseek)
+ if (!(out->f_mode & FMODE_PWRITE))
return -EINVAL;
if (copy_from_user(&offset, off_out, sizeof(loff_t)))
return -EFAULT;
@@ -1393,8 +1392,7 @@ static long do_splice(struct file *in, loff_t __user *off_in,
if (off_out)
return -ESPIPE;
if (off_in) {
- if (!in->f_op || !in->f_op->llseek ||
- in->f_op->llseek == no_llseek)
+ if (!(in->f_mode & FMODE_PREAD))
return -EINVAL;
if (copy_from_user(&offset, off_in, sizeof(loff_t)))
return -EFAULT;