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Merge branch 'compat-ioctl-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground
* 'compat-ioctl-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground: usbdevfs: move compat_ioctl handling to devio.c lp: move compat_ioctl handling into lp.c compat_ioctl: pass compat pointer directly to handlers compat_ioctl: simplify lookup table compat_ioctl: simplify calling of handlers compat_ioctl: inline all conversion handlers compat_ioctl: Remove BKL compat_ioctl: remove all VT ioctl handling
This commit is contained in:
Linus Torvalds
commit
92340ee319
4 changed files with 417 additions and 601 deletions
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@ -127,6 +127,7 @@
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#include <linux/wait.h>
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#include <linux/jiffies.h>
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#include <linux/smp_lock.h>
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#include <linux/compat.h>
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#include <linux/parport.h>
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#undef LP_STATS
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@ -571,13 +572,11 @@ static int lp_release(struct inode * inode, struct file * file)
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return 0;
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}
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static int lp_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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static int lp_do_ioctl(unsigned int minor, unsigned int cmd,
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unsigned long arg, void __user *argp)
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{
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unsigned int minor = iminor(inode);
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int status;
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int retval = 0;
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void __user *argp = (void __user *)arg;
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#ifdef LP_DEBUG
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printk(KERN_DEBUG "lp%d ioctl, cmd: 0x%x, arg: 0x%lx\n", minor, cmd, arg);
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@ -587,9 +586,6 @@ static int lp_ioctl(struct inode *inode, struct file *file,
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if ((LP_F(minor) & LP_EXIST) == 0)
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return -ENODEV;
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switch ( cmd ) {
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struct timeval par_timeout;
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long to_jiffies;
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case LPTIME:
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LP_TIME(minor) = arg * HZ/100;
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break;
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@ -652,34 +648,101 @@ static int lp_ioctl(struct inode *inode, struct file *file,
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return -EFAULT;
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break;
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case LPSETTIMEOUT:
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if (copy_from_user (&par_timeout, argp,
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sizeof (struct timeval))) {
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return -EFAULT;
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}
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/* Convert to jiffies, place in lp_table */
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if ((par_timeout.tv_sec < 0) ||
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(par_timeout.tv_usec < 0)) {
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return -EINVAL;
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}
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to_jiffies = DIV_ROUND_UP(par_timeout.tv_usec, 1000000/HZ);
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to_jiffies += par_timeout.tv_sec * (long) HZ;
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if (to_jiffies <= 0) {
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return -EINVAL;
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}
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lp_table[minor].timeout = to_jiffies;
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break;
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default:
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retval = -EINVAL;
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}
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return retval;
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}
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static int lp_set_timeout(unsigned int minor, struct timeval *par_timeout)
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{
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long to_jiffies;
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/* Convert to jiffies, place in lp_table */
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if ((par_timeout->tv_sec < 0) ||
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(par_timeout->tv_usec < 0)) {
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return -EINVAL;
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}
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to_jiffies = DIV_ROUND_UP(par_timeout->tv_usec, 1000000/HZ);
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to_jiffies += par_timeout->tv_sec * (long) HZ;
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if (to_jiffies <= 0) {
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return -EINVAL;
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}
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lp_table[minor].timeout = to_jiffies;
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return 0;
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}
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static long lp_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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unsigned int minor;
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struct timeval par_timeout;
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int ret;
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minor = iminor(file->f_path.dentry->d_inode);
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lock_kernel();
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switch (cmd) {
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case LPSETTIMEOUT:
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if (copy_from_user(&par_timeout, (void __user *)arg,
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sizeof (struct timeval))) {
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ret = -EFAULT;
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break;
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}
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ret = lp_set_timeout(minor, &par_timeout);
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break;
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default:
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ret = lp_do_ioctl(minor, cmd, arg, (void __user *)arg);
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break;
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}
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unlock_kernel();
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return ret;
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}
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#ifdef CONFIG_COMPAT
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static long lp_compat_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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unsigned int minor;
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struct timeval par_timeout;
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struct compat_timeval __user *tc;
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int ret;
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minor = iminor(file->f_path.dentry->d_inode);
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lock_kernel();
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switch (cmd) {
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case LPSETTIMEOUT:
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tc = compat_ptr(arg);
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if (get_user(par_timeout.tv_sec, &tc->tv_sec) ||
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get_user(par_timeout.tv_usec, &tc->tv_usec)) {
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ret = -EFAULT;
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break;
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}
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ret = lp_set_timeout(minor, &par_timeout);
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break;
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#ifdef LP_STATS
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case LPGETSTATS:
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/* FIXME: add an implementation if you set LP_STATS */
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ret = -EINVAL;
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break;
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#endif
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default:
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ret = lp_do_ioctl(minor, cmd, arg, compat_ptr(arg));
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break;
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}
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unlock_kernel();
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return ret;
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}
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#endif
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static const struct file_operations lp_fops = {
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.owner = THIS_MODULE,
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.write = lp_write,
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.ioctl = lp_ioctl,
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.unlocked_ioctl = lp_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = lp_compat_ioctl,
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#endif
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.open = lp_open,
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.release = lp_release,
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#ifdef CONFIG_PARPORT_1284
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@ -1388,6 +1388,46 @@ static int proc_reapurbnonblock(struct dev_state *ps, void __user *arg)
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}
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#ifdef CONFIG_COMPAT
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static int proc_control_compat(struct dev_state *ps,
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struct usbdevfs_ctrltransfer32 __user *p32)
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{
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struct usbdevfs_ctrltransfer __user *p;
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__u32 udata;
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p = compat_alloc_user_space(sizeof(*p));
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if (copy_in_user(p, p32, (sizeof(*p32) - sizeof(compat_caddr_t))) ||
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get_user(udata, &p32->data) ||
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put_user(compat_ptr(udata), &p->data))
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return -EFAULT;
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return proc_control(ps, p);
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}
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static int proc_bulk_compat(struct dev_state *ps,
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struct usbdevfs_bulktransfer32 __user *p32)
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{
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struct usbdevfs_bulktransfer __user *p;
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compat_uint_t n;
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compat_caddr_t addr;
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p = compat_alloc_user_space(sizeof(*p));
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if (get_user(n, &p32->ep) || put_user(n, &p->ep) ||
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get_user(n, &p32->len) || put_user(n, &p->len) ||
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get_user(n, &p32->timeout) || put_user(n, &p->timeout) ||
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get_user(addr, &p32->data) || put_user(compat_ptr(addr), &p->data))
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return -EFAULT;
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return proc_bulk(ps, p);
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}
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static int proc_disconnectsignal_compat(struct dev_state *ps, void __user *arg)
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{
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struct usbdevfs_disconnectsignal32 ds;
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if (copy_from_user(&ds, arg, sizeof(ds)))
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return -EFAULT;
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ps->discsignr = ds.signr;
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ps->disccontext = compat_ptr(ds.context);
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return 0;
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}
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static int get_urb32(struct usbdevfs_urb *kurb,
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struct usbdevfs_urb32 __user *uurb)
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@ -1482,6 +1522,7 @@ static int proc_reapurbnonblock_compat(struct dev_state *ps, void __user *arg)
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return processcompl_compat(as, (void __user * __user *)arg);
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}
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#endif
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static int proc_disconnectsignal(struct dev_state *ps, void __user *arg)
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@ -1648,12 +1689,12 @@ static int proc_release_port(struct dev_state *ps, void __user *arg)
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* are assuming that somehow the configuration has been prevented from
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* changing. But there's no mechanism to ensure that...
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*/
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static int usbdev_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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static long usbdev_do_ioctl(struct file *file, unsigned int cmd,
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void __user *p)
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{
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struct dev_state *ps = file->private_data;
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struct inode *inode = file->f_path.dentry->d_inode;
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struct usb_device *dev = ps->dev;
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void __user *p = (void __user *)arg;
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int ret = -ENOTTY;
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if (!(file->f_mode & FMODE_WRITE))
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@ -1726,6 +1767,24 @@ static int usbdev_ioctl(struct inode *inode, struct file *file,
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break;
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#ifdef CONFIG_COMPAT
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case USBDEVFS_CONTROL32:
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snoop(&dev->dev, "%s: CONTROL32\n", __func__);
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ret = proc_control_compat(ps, p);
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if (ret >= 0)
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inode->i_mtime = CURRENT_TIME;
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break;
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case USBDEVFS_BULK32:
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snoop(&dev->dev, "%s: BULK32\n", __func__);
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ret = proc_bulk_compat(ps, p);
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if (ret >= 0)
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inode->i_mtime = CURRENT_TIME;
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break;
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case USBDEVFS_DISCSIGNAL32:
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snoop(&dev->dev, "%s: DISCSIGNAL32\n", __func__);
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ret = proc_disconnectsignal_compat(ps, p);
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break;
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case USBDEVFS_SUBMITURB32:
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snoop(&dev->dev, "%s: SUBMITURB32\n", __func__);
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@ -1745,7 +1804,7 @@ static int usbdev_ioctl(struct inode *inode, struct file *file,
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break;
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case USBDEVFS_IOCTL32:
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snoop(&dev->dev, "%s: IOCTL\n", __func__);
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snoop(&dev->dev, "%s: IOCTL32\n", __func__);
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ret = proc_ioctl_compat(ps, ptr_to_compat(p));
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break;
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#endif
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@ -1801,6 +1860,32 @@ static int usbdev_ioctl(struct inode *inode, struct file *file,
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return ret;
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}
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static long usbdev_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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int ret;
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lock_kernel();
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ret = usbdev_do_ioctl(file, cmd, (void __user *)arg);
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unlock_kernel();
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return ret;
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}
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#ifdef CONFIG_COMPAT
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static long usbdev_compat_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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int ret;
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lock_kernel();
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ret = usbdev_do_ioctl(file, cmd, compat_ptr(arg));
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unlock_kernel();
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return ret;
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}
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#endif
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/* No kernel lock - fine */
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static unsigned int usbdev_poll(struct file *file,
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struct poll_table_struct *wait)
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@ -1817,13 +1902,16 @@ static unsigned int usbdev_poll(struct file *file,
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}
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const struct file_operations usbdev_file_operations = {
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.owner = THIS_MODULE,
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.llseek = usbdev_lseek,
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.read = usbdev_read,
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.poll = usbdev_poll,
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.ioctl = usbdev_ioctl,
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.open = usbdev_open,
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.release = usbdev_release,
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.owner = THIS_MODULE,
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.llseek = usbdev_lseek,
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.read = usbdev_read,
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.poll = usbdev_poll,
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.unlocked_ioctl = usbdev_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = usbdev_compat_ioctl,
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#endif
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.open = usbdev_open,
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.release = usbdev_release,
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};
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static void usbdev_remove(struct usb_device *udev)
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File diff suppressed because it is too large
Load diff
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@ -128,6 +128,29 @@ struct usbdevfs_hub_portinfo {
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#ifdef __KERNEL__
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#ifdef CONFIG_COMPAT
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#include <linux/compat.h>
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struct usbdevfs_ctrltransfer32 {
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u8 bRequestType;
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u8 bRequest;
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u16 wValue;
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u16 wIndex;
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u16 wLength;
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u32 timeout; /* in milliseconds */
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compat_caddr_t data;
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};
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struct usbdevfs_bulktransfer32 {
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compat_uint_t ep;
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compat_uint_t len;
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compat_uint_t timeout; /* in milliseconds */
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compat_caddr_t data;
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};
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struct usbdevfs_disconnectsignal32 {
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compat_int_t signr;
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compat_caddr_t context;
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};
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struct usbdevfs_urb32 {
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unsigned char type;
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unsigned char endpoint;
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@ -153,7 +176,9 @@ struct usbdevfs_ioctl32 {
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#endif /* __KERNEL__ */
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#define USBDEVFS_CONTROL _IOWR('U', 0, struct usbdevfs_ctrltransfer)
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#define USBDEVFS_CONTROL32 _IOWR('U', 0, struct usbdevfs_ctrltransfer32)
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#define USBDEVFS_BULK _IOWR('U', 2, struct usbdevfs_bulktransfer)
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#define USBDEVFS_BULK32 _IOWR('U', 2, struct usbdevfs_bulktransfer32)
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#define USBDEVFS_RESETEP _IOR('U', 3, unsigned int)
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#define USBDEVFS_SETINTERFACE _IOR('U', 4, struct usbdevfs_setinterface)
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#define USBDEVFS_SETCONFIGURATION _IOR('U', 5, unsigned int)
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@ -166,6 +191,7 @@ struct usbdevfs_ioctl32 {
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#define USBDEVFS_REAPURBNDELAY _IOW('U', 13, void *)
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#define USBDEVFS_REAPURBNDELAY32 _IOW('U', 13, __u32)
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#define USBDEVFS_DISCSIGNAL _IOR('U', 14, struct usbdevfs_disconnectsignal)
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#define USBDEVFS_DISCSIGNAL32 _IOR('U', 14, struct usbdevfs_disconnectsignal32)
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#define USBDEVFS_CLAIMINTERFACE _IOR('U', 15, unsigned int)
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#define USBDEVFS_RELEASEINTERFACE _IOR('U', 16, unsigned int)
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#define USBDEVFS_CONNECTINFO _IOW('U', 17, struct usbdevfs_connectinfo)
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