diff options
| author | Amir Goldstein <amir73il@gmail.com> | 2020-09-29 15:28:47 +0800 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-10-06 15:38:14 +0200 |
| commit | 61536bed2149b082748f8a38c593d915ff3e5957 (patch) | |
| tree | 650bd20e89098381d36658935b3554ccee1b33ee /fs/overlayfs/file.c | |
| parent | 8f6ee74c27860d4a4c6e0f8cf772bb2afc184bcb (diff) | |
ovl: support [S|G]ETFLAGS and FS[S|G]ETXATTR ioctls for directories
[S|G]ETFLAGS and FS[S|G]ETXATTR ioctls are applicable to both files and
directories, so add ioctl operations to dir as well.
We teach ovl_real_fdget() to get the realfile of directories which use
a different type of file->private_data.
Ifdef away compat ioctl implementation to conform to standard practice.
With this change, xfstest generic/079 which tests these ioctls on files
and directories passes.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/file.c')
| -rw-r--r-- | fs/overlayfs/file.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index 3582c3ae819c..443986ca564b 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -136,6 +136,13 @@ static int ovl_real_fdget_meta(const struct file *file, struct fd *real, static int ovl_real_fdget(const struct file *file, struct fd *real) { + if (d_is_dir(file_dentry(file))) { + real->flags = 0; + real->file = ovl_dir_real_file(file, false); + + return PTR_ERR_OR_ZERO(real->file); + } + return ovl_real_fdget_meta(file, real, false); } @@ -648,7 +655,7 @@ static long ovl_ioctl_set_fsxflags(struct file *file, unsigned int cmd, ovl_fsxflags_to_iflags(fa.fsx_xflags)); } -static long ovl_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +long ovl_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long ret; @@ -673,8 +680,8 @@ static long ovl_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return ret; } -static long ovl_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) +#ifdef CONFIG_COMPAT +long ovl_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { switch (cmd) { case FS_IOC32_GETFLAGS: @@ -691,6 +698,7 @@ static long ovl_compat_ioctl(struct file *file, unsigned int cmd, return ovl_ioctl(file, cmd, arg); } +#endif enum ovl_copyop { OVL_COPY, @@ -792,7 +800,9 @@ const struct file_operations ovl_file_operations = { .fallocate = ovl_fallocate, .fadvise = ovl_fadvise, .unlocked_ioctl = ovl_ioctl, +#ifdef CONFIG_COMPAT .compat_ioctl = ovl_compat_ioctl, +#endif .splice_read = ovl_splice_read, .splice_write = ovl_splice_write, |