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authorLinus Torvalds <torvalds@linux-foundation.org>2021-04-27 21:18:24 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-04-27 21:18:24 +0300
commita4f7fae10169cf626bb83e97f229ee78c71ceea8 (patch)
treebe09bc64f1697f79afce65a1edc2e14a254f1117 /fs/overlayfs/file.c
parent5e6720888523eaac7c548df0d263739c56a3c22e (diff)
parentc4fe8aef2f07c8a41169bcb2c925f6a3a6818ca3 (diff)
downloadlinux-a4f7fae10169cf626bb83e97f229ee78c71ceea8.tar.xz
Merge branch 'miklos.fileattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull fileattr conversion updates from Miklos Szeredi via Al Viro: "This splits the handling of FS_IOC_[GS]ETFLAGS from ->ioctl() into a separate method. The interface is reasonably uniform across the filesystems that support it and gives nice boilerplate removal" * 'miklos.fileattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (23 commits) ovl: remove unneeded ioctls fuse: convert to fileattr fuse: add internal open/release helpers fuse: unsigned open flags fuse: move ioctl to separate source file vfs: remove unused ioctl helpers ubifs: convert to fileattr reiserfs: convert to fileattr ocfs2: convert to fileattr nilfs2: convert to fileattr jfs: convert to fileattr hfsplus: convert to fileattr efivars: convert to fileattr xfs: convert to fileattr orangefs: convert to fileattr gfs2: convert to fileattr f2fs: convert to fileattr ext4: convert to fileattr ext2: convert to fileattr btrfs: convert to fileattr ...
Diffstat (limited to 'fs/overlayfs/file.c')
-rw-r--r--fs/overlayfs/file.c110
1 files changed, 0 insertions, 110 deletions
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index 3847cdc069b5..c144183a7e09 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -482,112 +482,6 @@ static int ovl_fadvise(struct file *file, loff_t offset, loff_t len, int advice)
return ret;
}
-static long ovl_real_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- struct fd real;
- long ret;
-
- ret = ovl_real_fdget(file, &real);
- if (ret)
- return ret;
-
- ret = security_file_ioctl(real.file, cmd, arg);
- if (!ret) {
- /*
- * Don't override creds, since we currently can't safely check
- * permissions before doing so.
- */
- ret = vfs_ioctl(real.file, cmd, arg);
- }
-
- fdput(real);
-
- return ret;
-}
-
-static long ovl_ioctl_set_flags(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- long ret;
- struct inode *inode = file_inode(file);
-
- if (!inode_owner_or_capable(&init_user_ns, inode))
- return -EACCES;
-
- ret = mnt_want_write_file(file);
- if (ret)
- return ret;
-
- inode_lock(inode);
-
- /*
- * Prevent copy up if immutable and has no CAP_LINUX_IMMUTABLE
- * capability.
- */
- ret = -EPERM;
- if (!ovl_has_upperdata(inode) && IS_IMMUTABLE(inode) &&
- !capable(CAP_LINUX_IMMUTABLE))
- goto unlock;
-
- ret = ovl_maybe_copy_up(file_dentry(file), O_WRONLY);
- if (ret)
- goto unlock;
-
- ret = ovl_real_ioctl(file, cmd, arg);
-
- ovl_copyflags(ovl_inode_real(inode), inode);
-unlock:
- inode_unlock(inode);
-
- mnt_drop_write_file(file);
-
- return ret;
-
-}
-
-long ovl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- long ret;
-
- switch (cmd) {
- case FS_IOC_GETFLAGS:
- case FS_IOC_FSGETXATTR:
- ret = ovl_real_ioctl(file, cmd, arg);
- break;
-
- case FS_IOC_FSSETXATTR:
- case FS_IOC_SETFLAGS:
- ret = ovl_ioctl_set_flags(file, cmd, arg);
- break;
-
- default:
- ret = -ENOTTY;
- }
-
- return ret;
-}
-
-#ifdef CONFIG_COMPAT
-long ovl_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- case FS_IOC32_GETFLAGS:
- cmd = FS_IOC_GETFLAGS;
- break;
-
- case FS_IOC32_SETFLAGS:
- cmd = FS_IOC_SETFLAGS;
- break;
-
- default:
- return -ENOIOCTLCMD;
- }
-
- return ovl_ioctl(file, cmd, arg);
-}
-#endif
-
enum ovl_copyop {
OVL_COPY,
OVL_CLONE,
@@ -687,10 +581,6 @@ const struct file_operations ovl_file_operations = {
.mmap = ovl_mmap,
.fallocate = ovl_fallocate,
.fadvise = ovl_fadvise,
- .unlocked_ioctl = ovl_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ovl_compat_ioctl,
-#endif
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,