Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=650c12c528d3e0ac69405dd35d3bc8a7228e49f2
Commit: 650c12c528d3e0ac69405dd35d3bc8a7228e49f2
Parent: 883b97eaf2a3fba7628f9f78ca7dc422aaf9728b
Author: Petr Vandrovec <[EMAIL PROTECTED]>
AuthorDate: Mon May 7 04:14:47 2007 +0200
Committer: Stefan Richter <[EMAIL PROTECTED]>
CommitDate: Tue Jul 10 00:07:38 2007 +0200
ieee1394: raw1394: Add ioctl() for 32bit userland on 64bit kernel
Add compat_ioctl. Although all structures are more or less same,
raw1394_iso_packets got pointer inside, and raw1394_cycle_timer got unwanted
padding in the middle. I did not add any translation for ioctls passing
array
of integers around as integers seem to have same size (32 bits) on all
architectures supported by Linux.
Signed-off-by: Petr Vandrovec <[EMAIL PROTECTED]>
Acked-by: Dan Dennedy <[EMAIL PROTECTED]>
Signed-off-by: Stefan Richter <[EMAIL PROTECTED]> (split into 3 patches)
---
drivers/ieee1394/raw1394.c | 97 +++-
1 files changed, 96 insertions(+), 1 deletions(-)
diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
index 94a3b6d..151a48f 100644
--- a/drivers/ieee1394/raw1394.c
+++ b/drivers/ieee1394/raw1394.c
@@ -2805,6 +2805,99 @@ static int raw1394_ioctl(struct inode *inode, struct
file *file,
return -EINVAL;
}
+#ifdef CONFIG_COMPAT
+struct raw1394_iso_packets32 {
+__u32 n_packets;
+compat_uptr_t infos;
+} __attribute__((packed));
+
+struct raw1394_cycle_timer32 {
+__u32 cycle_timer;
+__u64 local_time;
+} __attribute__((packed));
+
+#define RAW1394_IOC_ISO_RECV_PACKETS32 \
+_IOW ('#', 0x25, struct raw1394_iso_packets32)
+#define RAW1394_IOC_ISO_XMIT_PACKETS32 \
+_IOW ('#', 0x27, struct raw1394_iso_packets32)
+#define RAW1394_IOC_GET_CYCLE_TIMER32 \
+_IOR ('#', 0x30, struct raw1394_cycle_timer32)
+
+static long raw1394_iso_xmit_recv_packets32(struct file *file, unsigned int
cmd,
+ struct raw1394_iso_packets32 __user
*arg)
+{
+ compat_uptr_t infos32;
+ void *infos;
+ long err = -EFAULT;
+ struct raw1394_iso_packets __user *dst =
compat_alloc_user_space(sizeof(struct raw1394_iso_packets));
+
+ if (!copy_in_user(&dst->n_packets, &arg->n_packets, sizeof
arg->n_packets) &&
+ !copy_from_user(&infos32, &arg->infos, sizeof infos32)) {
+ infos = compat_ptr(infos32);
+ if (!copy_to_user(&dst->infos, &infos, sizeof infos))
+ err = raw1394_ioctl(NULL, file, cmd, (unsigned
long)dst);
+ }
+ return err;
+}
+
+static long raw1394_read_cycle_timer32(struct file_info *fi, void __user *
uaddr)
+{
+ struct raw1394_cycle_timer32 ct;
+ int err;
+
+ err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time);
+ if (!err)
+ if (copy_to_user(uaddr, &ct, sizeof(ct)))
+ err = -EFAULT;
+ return err;
+}
+
+static long raw1394_compat_ioctl(struct file *file,
+unsigned int cmd, unsigned long arg)
+{
+ struct file_info *fi = file->private_data;
+ void __user *argp = (void __user *)arg;
+ long err;
+
+ lock_kernel();
+ switch (cmd) {
+ /* These requests have same format as long as 'int' has same size. */
+ case RAW1394_IOC_ISO_RECV_INIT:
+ case RAW1394_IOC_ISO_RECV_START:
+ case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL:
+ case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL:
+ case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:
+ case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS:
+ case RAW1394_IOC_ISO_RECV_FLUSH:
+ case RAW1394_IOC_ISO_XMIT_RECV_STOP:
+ case RAW1394_IOC_ISO_XMIT_INIT:
+ case RAW1394_IOC_ISO_XMIT_START:
+ case RAW1394_IOC_ISO_XMIT_SYNC:
+ case RAW1394_IOC_ISO_GET_STATUS:
+ case RAW1394_IOC_ISO_SHUTDOWN:
+ case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
+ err = raw1394_ioctl(NULL, file, cmd, arg);
+ break;
+ /* These request have different format. */
+ case RAW1394_IOC_ISO_RECV_PACKETS32:
+ err = raw1394_iso_xmit_recv_packets32(file,
RAW1394_IOC_ISO_RECV_PACKETS, argp);
+ break;
+ case RAW1394_IOC_ISO_XMIT_PACKETS32:
+ err = raw1394_iso_xmit_recv_packets32(file,
RAW1394_IOC_ISO_XMIT_PACKETS, argp);
+ break;
+ case RAW1394_IOC_GET_CYCLE_TIMER32:
+ err = raw1394_read_cycle_timer32(fi, argp);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ unlock_kernel();
+
+ return err;
