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| author | Changli Gao <xiaosuo@gmail.com> | 2010-06-29 13:10:36 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-06-30 08:12:37 +0200 |
| commit | 19c9a49b432f245c6293508d164a4350f1f2c601 (patch) | |
| tree | a051c7c6c4c36d03e304c33a549da7ff4765d425 | |
| parent | 2cb4b05e7647891b46b91c07c9a60304803d1688 (diff) | |
| download | lwn-19c9a49b432f245c6293508d164a4350f1f2c601.tar.gz lwn-19c9a49b432f245c6293508d164a4350f1f2c601.zip | |
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>
| -rw-r--r-- | fs/splice.c | 6 |
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; |