diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-09-01 17:39:11 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-09-05 01:05:15 +0200 |
| commit | ac452acae1caa1a451142a30b4e1ea09cfac4410 (patch) | |
| tree | 93f24510cff66d776a610838a2285ffe1c6ac9ff /fs/read_write.c | |
| parent | autofs4: switch autofs4_write to __kernel_write (diff) | |
| download | linux-ac452acae1caa1a451142a30b4e1ea09cfac4410.tar.xz linux-ac452acae1caa1a451142a30b4e1ea09cfac4410.zip | |
fs: move kernel_write to fs/read_write.c
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/read_write.c')
| -rw-r--r-- | fs/read_write.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 0cc7033aa413..417dbe199505 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; |