From: Pete Zaitcev Date: Sat, 20 Dec 2008 19:56:08 +0000 (-0700) Subject: USB: usbmon: Implement compat_ioctl X-Git-Tag: v2.6.29-rc3~6^2~10 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=7abce6bedc118eb39fe177c2c26be5d008505c14;p=linux-2.6-omap-h63xx.git USB: usbmon: Implement compat_ioctl Running a 32-bit usbmon(8) on 2.6.28-rc9 produces the following: ioctl32(usbmon:28563): Unknown cmd fd(3) cmd(400c9206){t:ffffff92;sz:12} arg(ffd3f458) on /dev/usbmon0 It happens because the compatibility mode was implemented for 2.6.18 and not updated for the fsops.compat_ioctl API. This patch relocates the pieces from under #ifdef CONFIG_COMPAT into compat_ioctl with no other changes except one new whitespace. Signed-off-by: Pete Zaitcev Cc: stable Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index e06810aef2d..4cf27c72423 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -37,6 +37,7 @@ #define MON_IOCX_GET _IOW(MON_IOC_MAGIC, 6, struct mon_bin_get) #define MON_IOCX_MFETCH _IOWR(MON_IOC_MAGIC, 7, struct mon_bin_mfetch) #define MON_IOCH_MFLUSH _IO(MON_IOC_MAGIC, 8) + #ifdef CONFIG_COMPAT #define MON_IOCX_GET32 _IOW(MON_IOC_MAGIC, 6, struct mon_bin_get32) #define MON_IOCX_MFETCH32 _IOWR(MON_IOC_MAGIC, 7, struct mon_bin_mfetch32) @@ -921,21 +922,6 @@ static int mon_bin_ioctl(struct inode *inode, struct file *file, } break; -#ifdef CONFIG_COMPAT - case MON_IOCX_GET32: { - struct mon_bin_get32 getb; - - if (copy_from_user(&getb, (void __user *)arg, - sizeof(struct mon_bin_get32))) - return -EFAULT; - - ret = mon_bin_get_event(file, rp, - compat_ptr(getb.hdr32), compat_ptr(getb.data32), - getb.alloc32); - } - break; -#endif - case MON_IOCX_MFETCH: { struct mon_bin_mfetch mfetch; @@ -962,7 +948,57 @@ static int mon_bin_ioctl(struct inode *inode, struct file *file, } break; + case MON_IOCG_STATS: { + struct mon_bin_stats __user *sp; + unsigned int nevents; + unsigned int ndropped; + + spin_lock_irqsave(&rp->b_lock, flags); + ndropped = rp->cnt_lost; + rp->cnt_lost = 0; + spin_unlock_irqrestore(&rp->b_lock, flags); + nevents = mon_bin_queued(rp); + + sp = (struct mon_bin_stats __user *)arg; + if (put_user(rp->cnt_lost, &sp->dropped)) + return -EFAULT; + if (put_user(nevents, &sp->queued)) + return -EFAULT; + + } + break; + + default: + return -ENOTTY; + } + + return ret; +} + #ifdef CONFIG_COMPAT +static long mon_bin_compat_ioctl(struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct mon_reader_bin *rp = file->private_data; + int ret; + + switch (cmd) { + + case MON_IOCX_GET32: { + struct mon_bin_get32 getb; + + if (copy_from_user(&getb, (void __user *)arg, + sizeof(struct mon_bin_get32))) + return -EFAULT; + + ret = mon_bin_get_event(file, rp, + compat_ptr(getb.hdr32), compat_ptr(getb.data32), + getb.alloc32); + if (ret < 0) + return ret; + } + return 0; + case MON_IOCX_MFETCH32: { struct mon_bin_mfetch32 mfetch; @@ -986,37 +1022,25 @@ static int mon_bin_ioctl(struct inode *inode, struct file *file, return ret; if (put_user(ret, &uptr->nfetch32)) return -EFAULT; - ret = 0; } - break; -#endif - - case MON_IOCG_STATS: { - struct mon_bin_stats __user *sp; - unsigned int nevents; - unsigned int ndropped; - - spin_lock_irqsave(&rp->b_lock, flags); - ndropped = rp->cnt_lost; - rp->cnt_lost = 0; - spin_unlock_irqrestore(&rp->b_lock, flags); - nevents = mon_bin_queued(rp); + return 0; - sp = (struct mon_bin_stats __user *)arg; - if (put_user(rp->cnt_lost, &sp->dropped)) - return -EFAULT; - if (put_user(nevents, &sp->queued)) - return -EFAULT; + case MON_IOCG_STATS: + return mon_bin_ioctl(NULL, file, cmd, + (unsigned long) compat_ptr(arg)); - } - break; + case MON_IOCQ_URB_LEN: + case MON_IOCQ_RING_SIZE: + case MON_IOCT_RING_SIZE: + case MON_IOCH_MFLUSH: + return mon_bin_ioctl(NULL, file, cmd, arg); default: - return -ENOTTY; + ; } - - return ret; + return -ENOTTY; } +#endif /* CONFIG_COMPAT */ static unsigned int mon_bin_poll(struct file *file, struct poll_table_struct *wait) @@ -1094,6 +1118,9 @@ static const struct file_operations mon_fops_binary = { /* .write = mon_text_write, */ .poll = mon_bin_poll, .ioctl = mon_bin_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = mon_bin_compat_ioctl, +#endif .release = mon_bin_release, .mmap = mon_bin_mmap, };