Similar to the compat handlers of other file systems. The ioctls
are compatible except that they have different numbers.
Cc: sfrench@xxxxxxxxx
Signed-off-by: Andi Kleen <ak@xxxxxxx>
---
fs/cifs/cifsfs.c | 15 +++++++++++++++
fs/cifs/cifsfs.h | 2 ++
fs/cifs/ioctl.c | 19 +++++++++++++++++++
3 files changed, 36 insertions(+)
Index: linux/fs/cifs/cifsfs.c
===================================================================
--- linux.orig/fs/cifs/cifsfs.c
+++ linux/fs/cifs/cifsfs.c
@@ -626,6 +626,9 @@ const struct file_operations cifs_file_o
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_POSIX
.unlocked_ioctl = cifs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = cifs_compat_ioctl,
+#endif
#endif /* CONFIG_CIFS_POSIX */
#ifdef CONFIG_CIFS_EXPERIMENTAL
@@ -646,6 +649,9 @@ const struct file_operations cifs_file_d
.splice_read = generic_file_splice_read,
#ifdef CONFIG_CIFS_POSIX
.unlocked_ioctl = cifs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = cifs_compat_ioctl,
+#endif
#endif /* CONFIG_CIFS_POSIX */
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_EXPERIMENTAL
@@ -666,6 +672,9 @@ const struct file_operations cifs_file_n
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_POSIX
.unlocked_ioctl = cifs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = cifs_compat_ioctl,
+#endif
#endif /* CONFIG_CIFS_POSIX */
#ifdef CONFIG_CIFS_EXPERIMENTAL
@@ -685,6 +694,9 @@ const struct file_operations cifs_file_d
.splice_read = generic_file_splice_read,
#ifdef CONFIG_CIFS_POSIX
.unlocked_ioctl = cifs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = cifs_compat_ioctl,
+#endif
#endif /* CONFIG_CIFS_POSIX */
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_EXPERIMENTAL
@@ -700,6 +712,9 @@ const struct file_operations cifs_dir_op
.dir_notify = cifs_dir_notify,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
.unlocked_ioctl = cifs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = cifs_compat_ioctl,
+#endif
};
static void
Index: linux/fs/cifs/cifsfs.h
===================================================================
--- linux.orig/fs/cifs/cifsfs.h
+++ linux/fs/cifs/cifsfs.h
@@ -101,6 +101,8 @@ extern ssize_t cifs_getxattr(struct dent
extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
extern long cifs_ioctl(struct file *filep, unsigned int command,
unsigned long arg);
+extern long cifs_compat_ioctl(struct file *filep, unsigned int command,
+ unsigned long arg);
#ifdef CONFIG_CIFS_EXPERIMENTAL
extern const struct export_operations cifs_export_ops;
Index: linux/fs/cifs/ioctl.c
===================================================================
--- linux.orig/fs/cifs/ioctl.c
+++ linux/fs/cifs/ioctl.c
@@ -108,3 +108,22 @@ long cifs_ioctl(struct file *filep, unsi
FreeXid(xid);
return rc;
}
+
+#ifdef CONFIG_COMPAT
+#define FS_IOC_GETFLAGS32 _IOR('f', 1, int)
+#define FS_IOC_SETFLAGS32 _IOR('f', 2, int)
+
+long cifs_compat_ioctl(struct file *f, unsigned int command, unsigned long arg)
+{
+ /* Native ioctl is just mistyped, the real type is always int */
+ switch (command) {
+ case FS_IOC_GETFLAGS32:
+ command = FS_IOC_GETFLAGS;
+ break;
+ case FS_IOC_SETFLAGS32:
+ command = FS_IOC_SETFLAGS;
+ break;
+ }
+ return cifs_ioctl(f, command, arg);
+}
+#endif
-
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