From ef1fc2f01e02951a0d8520ec3aa0b38606d74b55 Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Sun, 27 Jan 2008 17:02:02 -0600
Subject: [PATCH] BKL-removal: Implement a compat_ioctl handler for JFS
The ioctls were already compatible except for the actual values so this
was fairly easy to do.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
fs/jfs/file.c | 3 +++
fs/jfs/ioctl.c | 18 ++++++++++++++++++
fs/jfs/jfs_dinode.h | 2 ++
fs/jfs/jfs_inode.h | 1 +
fs/jfs/namei.c | 3 +++
5 files changed, 27 insertions(+)
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index 713ff4c2f807..7f6063acaa3b 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -113,4 +113,7 @@ const struct file_operations jfs_file_operations = {
.fsync = jfs_fsync,
.release = jfs_release,
.unlocked_ioctl = jfs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = jfs_compat_ioctl,
+#endif
};
diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c
index fc82eccf408a..a1f8e375ad21 100644
--- a/fs/jfs/ioctl.c
+++ b/fs/jfs/ioctl.c
@@ -117,3 +117,21 @@ long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
}
+#ifdef CONFIG_COMPAT
+long jfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ /* While these ioctl numbers defined with 'long' and have different
+ * numbers than the 64bit ABI,
+ * the actual implementation only deals with ints and is compatible.
+ */
+ switch (cmd) {
+ case JFS_IOC_GETFLAGS32:
+ cmd = JFS_IOC_GETFLAGS;
+ break;
+ case JFS_IOC_SETFLAGS32:
+ cmd = JFS_IOC_SETFLAGS;
+ break;
+ }
+ return jfs_ioctl(filp, cmd, arg);
+}
+#endif
diff --git a/fs/jfs/jfs_dinode.h b/fs/jfs/jfs_dinode.h
index c387540d3425..395c4c0d0f06 100644
--- a/fs/jfs/jfs_dinode.h
+++ b/fs/jfs/jfs_dinode.h
@@ -170,5 +170,7 @@ struct dinode {
#define JFS_IOC_GETFLAGS _IOR('f', 1, long)
#define JFS_IOC_SETFLAGS _IOW('f', 2, long)
+#define JFS_IOC_GETFLAGS32 _IOR('f', 1, int)
+#define JFS_IOC_SETFLAGS32 _IOW('f', 2, int)
#endif /*_H_JFS_DINODE */
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 570fd5e3ef61..adb2fafcc544 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -23,6 +23,7 @@ struct fid;
extern struct inode *ialloc(struct inode *, umode_t);
extern int jfs_fsync(struct file *, struct dentry *, int);
extern long jfs_ioctl(struct file *, unsigned int, unsigned long);
+extern long jfs_compat_ioctl(struct file *, unsigned int, unsigned long);
extern struct inode *jfs_iget(struct super_block *, unsigned long);
extern int jfs_commit_inode(struct inode *, int);
extern int jfs_write_inode(struct inode*, int);
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 6440904a051c..0ba6778edaa2 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1557,6 +1557,9 @@ const struct file_operations jfs_dir_operations = {
.readdir = jfs_readdir,
.fsync = jfs_fsync,
.unlocked_ioctl = jfs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = jfs_compat_ioctl,
+#endif
};
static int jfs_ci_hash(struct dentry *dir, struct qstr *this)
--
2.20.1