From 7e4e8e689fe90dd94bd76f9706d6cce580941ed5 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 29 Apr 2008 00:59:13 -0700 Subject: Misc: phantom, add compat ioctl Openhaptics uses pointers in _IOC() macros, implement compat for them. Also add _IOC alternatives which are not 32/64 bit dependent (structures passed through aren't yet) -- libphantom will use them. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Jiri Slaby Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/phantom.c | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) (limited to 'drivers/misc/phantom.c') diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c index 7fa61e907e1c..5447a603686a 100644 --- a/drivers/misc/phantom.c +++ b/drivers/misc/phantom.c @@ -12,6 +12,7 @@ * or alternatively, you might use OpenHaptics provided by Sensable. */ +#include #include #include #include @@ -91,11 +92,8 @@ static long phantom_ioctl(struct file *file, unsigned int cmd, unsigned long flags; unsigned int i; - if (_IOC_TYPE(cmd) != PH_IOC_MAGIC || - _IOC_NR(cmd) > PH_IOC_MAXNR) - return -ENOTTY; - switch (cmd) { + case PHN_SETREG: case PHN_SET_REG: if (copy_from_user(&r, argp, sizeof(r))) return -EFAULT; @@ -126,6 +124,7 @@ static long phantom_ioctl(struct file *file, unsigned int cmd, phantom_status(dev, dev->status & ~PHB_RUNNING); spin_unlock_irqrestore(&dev->regs_lock, flags); break; + case PHN_SETREGS: case PHN_SET_REGS: if (copy_from_user(&rs, argp, sizeof(rs))) return -EFAULT; @@ -143,6 +142,7 @@ static long phantom_ioctl(struct file *file, unsigned int cmd, } spin_unlock_irqrestore(&dev->regs_lock, flags); break; + case PHN_GETREG: case PHN_GET_REG: if (copy_from_user(&r, argp, sizeof(r))) return -EFAULT; @@ -155,6 +155,7 @@ static long phantom_ioctl(struct file *file, unsigned int cmd, if (copy_to_user(argp, &r, sizeof(r))) return -EFAULT; break; + case PHN_GETREGS: case PHN_GET_REGS: { u32 m; @@ -191,6 +192,20 @@ static long phantom_ioctl(struct file *file, unsigned int cmd, return 0; } +#ifdef CONFIG_COMPAT +static long phantom_compat_ioctl(struct file *filp, unsigned int cmd, + unsigned long arg) +{ + if (_IOC_NR(cmd) <= 3 && _IOC_SIZE(cmd) == sizeof(compat_uptr_t)) { + cmd &= ~(_IOC_SIZEMASK << _IOC_SIZESHIFT); + cmd |= sizeof(void *) << _IOC_SIZESHIFT; + } + return phantom_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); +} +#else +#define phantom_compat_ioctl NULL +#endif + static int phantom_open(struct inode *inode, struct file *file) { struct phantom_device *dev = container_of(inode->i_cdev, @@ -253,6 +268,7 @@ static struct file_operations phantom_file_ops = { .open = phantom_open, .release = phantom_release, .unlocked_ioctl = phantom_ioctl, + .compat_ioctl = phantom_compat_ioctl, .poll = phantom_poll, }; -- cgit v1.2.3