diff options
| -rw-r--r-- | fs/fcntl.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c index 67bdc6e8ccad..ed051f825bad 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -264,15 +264,18 @@ static long fcntl_rw_hint(struct file *file, unsigned int cmd, struct inode *inode = file_inode(file); u64 *argp = (u64 __user *)arg; enum rw_hint hint; + u64 h; switch (cmd) { case F_GET_FILE_RW_HINT: - if (put_user(file_write_hint(file), argp)) + h = file_write_hint(file); + if (copy_to_user(argp, &h, sizeof(*argp))) return -EFAULT; return 0; case F_SET_FILE_RW_HINT: - if (get_user(hint, argp)) + if (copy_from_user(&h, argp, sizeof(h))) return -EFAULT; + hint = (enum rw_hint) h; if (!rw_hint_valid(hint)) return -EINVAL; @@ -281,12 +284,14 @@ static long fcntl_rw_hint(struct file *file, unsigned int cmd, spin_unlock(&file->f_lock); return 0; case F_GET_RW_HINT: - if (put_user(inode->i_write_hint, argp)) + h = inode->i_write_hint; + if (copy_to_user(argp, &h, sizeof(*argp))) return -EFAULT; return 0; case F_SET_RW_HINT: - if (get_user(hint, argp)) + if (copy_from_user(&h, argp, sizeof(h))) return -EFAULT; + hint = (enum rw_hint) h; if (!rw_hint_valid(hint)) return -EINVAL; |