From ac452acae1caa1a451142a30b4e1ea09cfac4410 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 1 Sep 2017 17:39:11 +0200 Subject: fs: move kernel_write to fs/read_write.c Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/read_write.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'fs/read_write.c') diff --git a/fs/read_write.c b/fs/read_write.c index 0cc7033..417dbe1 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -496,9 +496,24 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t inc_syscw(current); return ret; } - EXPORT_SYMBOL(__kernel_write); +ssize_t kernel_write(struct file *file, const char *buf, size_t count, + loff_t pos) +{ + mm_segment_t old_fs; + ssize_t res; + + old_fs = get_fs(); + set_fs(get_ds()); + /* The cast to a user pointer is valid due to the set_fs() */ + res = vfs_write(file, (__force const char __user *)buf, count, &pos); + set_fs(old_fs); + + return res; +} +EXPORT_SYMBOL(kernel_write); + ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_t *pos) { ssize_t ret; -- cgit v1.1