[PATCH] Convert cciss to compat_ioctl
From: Andi Kleen
Date: Tue Jan 18 2005 - 03:01:35 EST
Convert the cciss driver to compat_ioctl. This cleans up a lot
of code.
I don't have such hardware thus this is only compile tested.
This requires the block device compat_ioctl patch I sent earlier.
Signed-off-by: Andi Kleen <ak@xxxxxx>
diff -u linux-2.6.11-rc1-bk4/drivers/block/cciss.c-o linux-2.6.11-rc1-bk4/drivers/block/cciss.c
--- linux-2.6.11-rc1-bk4/drivers/block/cciss.c-o 2005-01-14 10:12:17.000000000 +0100
+++ linux-2.6.11-rc1-bk4/drivers/block/cciss.c 2005-01-18 06:30:43.000000000 +0100
@@ -146,11 +146,18 @@
static void cciss_procinit(int i) {}
#endif /* CONFIG_PROC_FS */
+#ifdef CONFIG_COMPAT
+static int cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
+#endif
+
static struct block_device_operations cciss_fops = {
.owner = THIS_MODULE,
.open = cciss_open,
.release = cciss_release,
.ioctl = cciss_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = cciss_compat_ioctl,
+#endif
.revalidate_disk= cciss_revalidate,
};
@@ -477,80 +484,50 @@
}
#ifdef CONFIG_COMPAT
-/* for AMD 64 bit kernel compatibility with 32-bit userland ioctls */
-extern long sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg);
-extern int
-register_ioctl32_conversion(unsigned int cmd, int (*handler)(unsigned int,
- unsigned int, unsigned long, struct file *));
-extern int unregister_ioctl32_conversion(unsigned int cmd);
-
-static int cciss_ioctl32_passthru(unsigned int fd, unsigned cmd, unsigned long arg, struct file *file);
-static int cciss_ioctl32_big_passthru(unsigned int fd, unsigned cmd, unsigned long arg,
- struct file *file);
-
-typedef int (*handler_type) (unsigned int, unsigned int, unsigned long, struct file *);
-
-static struct ioctl32_map {
- unsigned int cmd;
- handler_type handler;
- int registered;
-} cciss_ioctl32_map[] = {
- { CCISS_GETPCIINFO, (handler_type) sys_ioctl, 0 },
- { CCISS_GETINTINFO, (handler_type) sys_ioctl, 0 },
- { CCISS_SETINTINFO, (handler_type) sys_ioctl, 0 },
- { CCISS_GETNODENAME, (handler_type) sys_ioctl, 0 },
- { CCISS_SETNODENAME, (handler_type) sys_ioctl, 0 },
- { CCISS_GETHEARTBEAT, (handler_type) sys_ioctl, 0 },
- { CCISS_GETBUSTYPES, (handler_type) sys_ioctl, 0 },
- { CCISS_GETFIRMVER, (handler_type) sys_ioctl, 0 },
- { CCISS_GETDRIVVER, (handler_type) sys_ioctl, 0 },
- { CCISS_REVALIDVOLS, (handler_type) sys_ioctl, 0 },
- { CCISS_PASSTHRU32, cciss_ioctl32_passthru, 0 },
- { CCISS_DEREGDISK, (handler_type) sys_ioctl, 0 },
- { CCISS_REGNEWDISK, (handler_type) sys_ioctl, 0 },
- { CCISS_REGNEWD, (handler_type) sys_ioctl, 0 },
- { CCISS_RESCANDISK, (handler_type) sys_ioctl, 0 },
- { CCISS_GETLUNINFO, (handler_type) sys_ioctl, 0 },
- { CCISS_BIG_PASSTHRU32, cciss_ioctl32_big_passthru, 0 },
-};
-#define NCCISS_IOCTL32_ENTRIES (sizeof(cciss_ioctl32_map) / sizeof(cciss_ioctl32_map[0]))
-static void register_cciss_ioctl32(void)
-{
- int i, rc;
- for (i=0; i < NCCISS_IOCTL32_ENTRIES; i++) {
- rc = register_ioctl32_conversion(
- cciss_ioctl32_map[i].cmd,
- cciss_ioctl32_map[i].handler);
- if (rc != 0) {
- printk(KERN_WARNING "cciss: failed to register "
- "32 bit compatible ioctl 0x%08x\n",
- cciss_ioctl32_map[i].cmd);
- cciss_ioctl32_map[i].registered = 0;
- } else
- cciss_ioctl32_map[i].registered = 1;
- }
-}
-static void unregister_cciss_ioctl32(void)
+static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
{
- int i, rc;
+ int ret;
+ lock_kernel();
+ ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
+ unlock_kernel();
+ return ret;
+}
- for (i=0; i < NCCISS_IOCTL32_ENTRIES; i++) {
- if (!cciss_ioctl32_map[i].registered)
- continue;
- rc = unregister_ioctl32_conversion(
- cciss_ioctl32_map[i].cmd);
- if (rc == 0) {
- cciss_ioctl32_map[i].registered = 0;
- continue;
- }
- printk(KERN_WARNING "cciss: failed to unregister "
- "32 bit compatible ioctl 0x%08x\n",
- cciss_ioctl32_map[i].cmd);
+static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
+static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
+
+static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case CCISS_GETPCIINFO:
+ case CCISS_GETINTINFO:
+ case CCISS_SETINTINFO:
+ case CCISS_GETNODENAME:
+ case CCISS_SETNODENAME:
+ case CCISS_GETHEARTBEAT:
+ case CCISS_GETBUSTYPES:
+ case CCISS_GETFIRMVER:
+ case CCISS_GETDRIVVER:
+ case CCISS_REVALIDVOLS:
+ case CCISS_DEREGDISK:
+ case CCISS_REGNEWDISK:
+ case CCISS_REGNEWD:
+ case CCISS_RESCANDISK:
+ case CCISS_GETLUNINFO:
+ return do_ioctl(f, cmd, arg);
+
+ case CCISS_PASSTHRU32:
+ return cciss_ioctl32_passthru(f, cmd, arg);
+ case CCISS_BIG_PASSTHRU32:
+ return cciss_ioctl32_big_passthru(f, cmd, arg);
+
+ default:
+ return -ENOIOCTLCMD;
}
}
-int cciss_ioctl32_passthru(unsigned int fd, unsigned cmd, unsigned long arg,
- struct file *file)
+
+static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
{
IOCTL32_Command_struct __user *arg32 =
(IOCTL32_Command_struct __user *) arg;
@@ -571,7 +548,7 @@
if (err)
return -EFAULT;
- err = sys_ioctl(fd, CCISS_PASSTHRU, (unsigned long) p);
+ err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
if (err)
return err;
err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
@@ -580,8 +557,7 @@
return err;
}
-int cciss_ioctl32_big_passthru(unsigned int fd, unsigned cmd, unsigned long arg,
- struct file *file)
+static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
{
BIG_IOCTL32_Command_struct __user *arg32 =
(BIG_IOCTL32_Command_struct __user *) arg;
@@ -603,7 +579,7 @@
if (err)
return -EFAULT;
- err = sys_ioctl(fd, CCISS_BIG_PASSTHRU, (unsigned long) p);
+ err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
if (err)
return err;
err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
@@ -611,9 +587,6 @@
return -EFAULT;
return err;
}
-#else
-static inline void register_cciss_ioctl32(void) {}
-static inline void unregister_cciss_ioctl32(void) {}
#endif
/*
* ioctl
@@ -2915,7 +2888,6 @@
static int __init init_cciss_module(void)
{
- register_cciss_ioctl32();
return ( cciss_init());
}
@@ -2923,7 +2895,6 @@
{
int i;
- unregister_cciss_ioctl32();
pci_unregister_driver(&cciss_pci_driver);
/* double check that all controller entrys have been removed */
for (i=0; i< MAX_CTLR; i++)
-
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