[PATCH] Clean up mtrr compat ioctl code
Handle 32-bit mtrr ioctls in the mtrr driver instead of the ia32 compatability layer. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
parent
daedb82d6b
commit
c531178157
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@ -149,60 +149,89 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos)
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return -EINVAL;
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return -EINVAL;
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}
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}
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static int
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static long
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mtrr_ioctl(struct inode *inode, struct file *file,
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mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
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unsigned int cmd, unsigned long __arg)
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{
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{
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int err;
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int err = 0;
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mtrr_type type;
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mtrr_type type;
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struct mtrr_sentry sentry;
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struct mtrr_sentry sentry;
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struct mtrr_gentry gentry;
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struct mtrr_gentry gentry;
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void __user *arg = (void __user *) __arg;
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void __user *arg = (void __user *) __arg;
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switch (cmd) {
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case MTRRIOC_ADD_ENTRY:
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case MTRRIOC_SET_ENTRY:
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case MTRRIOC_DEL_ENTRY:
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case MTRRIOC_KILL_ENTRY:
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case MTRRIOC_ADD_PAGE_ENTRY:
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case MTRRIOC_SET_PAGE_ENTRY:
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case MTRRIOC_DEL_PAGE_ENTRY:
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case MTRRIOC_KILL_PAGE_ENTRY:
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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break;
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case MTRRIOC_GET_ENTRY:
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case MTRRIOC_GET_PAGE_ENTRY:
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if (copy_from_user(&gentry, arg, sizeof gentry))
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return -EFAULT;
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break;
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#ifdef CONFIG_COMPAT
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case MTRRIOC32_ADD_ENTRY:
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case MTRRIOC32_SET_ENTRY:
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case MTRRIOC32_DEL_ENTRY:
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case MTRRIOC32_KILL_ENTRY:
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case MTRRIOC32_ADD_PAGE_ENTRY:
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case MTRRIOC32_SET_PAGE_ENTRY:
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case MTRRIOC32_DEL_PAGE_ENTRY:
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case MTRRIOC32_KILL_PAGE_ENTRY: {
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struct mtrr_sentry32 __user *s32 = (struct mtrr_sentry32 __user *)__arg;
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err = get_user(sentry.base, &s32->base);
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err |= get_user(sentry.size, &s32->size);
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err |= get_user(sentry.type, &s32->type);
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if (err)
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return err;
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break;
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}
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case MTRRIOC32_GET_ENTRY:
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case MTRRIOC32_GET_PAGE_ENTRY: {
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struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)__arg;
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err = get_user(gentry.regnum, &g32->regnum);
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err |= get_user(gentry.base, &g32->base);
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err |= get_user(gentry.size, &g32->size);
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err |= get_user(gentry.type, &g32->type);
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if (err)
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return err;
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break;
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}
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#endif
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}
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switch (cmd) {
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switch (cmd) {
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default:
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default:
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return -ENOTTY;
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return -ENOTTY;
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case MTRRIOC_ADD_ENTRY:
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case MTRRIOC_ADD_ENTRY:
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if (!capable(CAP_SYS_ADMIN))
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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err =
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err =
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mtrr_file_add(sentry.base, sentry.size, sentry.type, 1,
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mtrr_file_add(sentry.base, sentry.size, sentry.type, 1,
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file, 0);
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file, 0);
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if (err < 0)
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return err;
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break;
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break;
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case MTRRIOC_SET_ENTRY:
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case MTRRIOC_SET_ENTRY:
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if (!capable(CAP_SYS_ADMIN))
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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err = mtrr_add(sentry.base, sentry.size, sentry.type, 0);
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err = mtrr_add(sentry.base, sentry.size, sentry.type, 0);
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if (err < 0)
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return err;
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break;
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break;
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case MTRRIOC_DEL_ENTRY:
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case MTRRIOC_DEL_ENTRY:
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if (!capable(CAP_SYS_ADMIN))
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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err = mtrr_file_del(sentry.base, sentry.size, file, 0);
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err = mtrr_file_del(sentry.base, sentry.size, file, 0);
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if (err < 0)
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return err;
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break;
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break;
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case MTRRIOC_KILL_ENTRY:
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case MTRRIOC_KILL_ENTRY:
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if (!capable(CAP_SYS_ADMIN))
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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err = mtrr_del(-1, sentry.base, sentry.size);
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err = mtrr_del(-1, sentry.base, sentry.size);
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if (err < 0)
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return err;
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break;
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break;
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case MTRRIOC_GET_ENTRY:
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case MTRRIOC_GET_ENTRY:
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if (copy_from_user(&gentry, arg, sizeof gentry))
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return -EFAULT;
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if (gentry.regnum >= num_var_ranges)
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if (gentry.regnum >= num_var_ranges)
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return -EINVAL;
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return -EINVAL;
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mtrr_if->get(gentry.regnum, &gentry.base, &gentry.size, &type);
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mtrr_if->get(gentry.regnum, &gentry.base, &gentry.size, &type);
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@ -217,60 +246,59 @@ mtrr_ioctl(struct inode *inode, struct file *file,
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gentry.type = type;
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gentry.type = type;
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}
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}
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if (copy_to_user(arg, &gentry, sizeof gentry))
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return -EFAULT;
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break;
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break;
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case MTRRIOC_ADD_PAGE_ENTRY:
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case MTRRIOC_ADD_PAGE_ENTRY:
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if (!capable(CAP_SYS_ADMIN))
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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err =
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err =
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mtrr_file_add(sentry.base, sentry.size, sentry.type, 1,
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mtrr_file_add(sentry.base, sentry.size, sentry.type, 1,
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file, 1);
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file, 1);
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if (err < 0)
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return err;
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break;
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break;
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case MTRRIOC_SET_PAGE_ENTRY:
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case MTRRIOC_SET_PAGE_ENTRY:
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if (!capable(CAP_SYS_ADMIN))
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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err = mtrr_add_page(sentry.base, sentry.size, sentry.type, 0);
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err = mtrr_add_page(sentry.base, sentry.size, sentry.type, 0);
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if (err < 0)
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return err;
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break;
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break;
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case MTRRIOC_DEL_PAGE_ENTRY:
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case MTRRIOC_DEL_PAGE_ENTRY:
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if (!capable(CAP_SYS_ADMIN))
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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err = mtrr_file_del(sentry.base, sentry.size, file, 1);
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err = mtrr_file_del(sentry.base, sentry.size, file, 1);
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if (err < 0)
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return err;
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break;
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break;
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case MTRRIOC_KILL_PAGE_ENTRY:
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case MTRRIOC_KILL_PAGE_ENTRY:
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if (!capable(CAP_SYS_ADMIN))
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(&sentry, arg, sizeof sentry))
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return -EFAULT;
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err = mtrr_del_page(-1, sentry.base, sentry.size);
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err = mtrr_del_page(-1, sentry.base, sentry.size);
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if (err < 0)
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return err;
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break;
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break;
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case MTRRIOC_GET_PAGE_ENTRY:
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case MTRRIOC_GET_PAGE_ENTRY:
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if (copy_from_user(&gentry, arg, sizeof gentry))
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return -EFAULT;
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if (gentry.regnum >= num_var_ranges)
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if (gentry.regnum >= num_var_ranges)
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return -EINVAL;
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return -EINVAL;
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mtrr_if->get(gentry.regnum, &gentry.base, &gentry.size, &type);
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mtrr_if->get(gentry.regnum, &gentry.base, &gentry.size, &type);
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gentry.type = type;
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gentry.type = type;
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if (copy_to_user(arg, &gentry, sizeof gentry))
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return -EFAULT;
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break;
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break;
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}
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}
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return 0;
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if (err)
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return err;
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switch(cmd) {
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case MTRRIOC_GET_ENTRY:
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case MTRRIOC_GET_PAGE_ENTRY:
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if (copy_to_user(arg, &gentry, sizeof gentry))
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err = -EFAULT;
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break;
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#ifdef CONFIG_COMPAT
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case MTRRIOC32_GET_ENTRY:
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case MTRRIOC32_GET_PAGE_ENTRY: {
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struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)__arg;
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err = put_user(gentry.base, &g32->base);
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err |= put_user(gentry.size, &g32->size);
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err |= put_user(gentry.regnum, &g32->regnum);
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err |= put_user(gentry.type, &g32->type);
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break;
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}
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#endif
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}
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return err;
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}
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}
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static int
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static int
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@ -310,7 +338,8 @@ static struct file_operations mtrr_fops = {
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.read = seq_read,
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.read = seq_read,
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.llseek = seq_lseek,
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.llseek = seq_lseek,
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.write = mtrr_write,
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.write = mtrr_write,
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.ioctl = mtrr_ioctl,
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.unlocked_ioctl = mtrr_ioctl,
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.compat_ioctl = mtrr_ioctl,
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.release = mtrr_close,
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.release = mtrr_close,
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};
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};
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@ -12,7 +12,6 @@
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#define INCLUDES
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#define INCLUDES
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#include <linux/syscalls.h>
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#include <linux/syscalls.h>
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#include "compat_ioctl.c"
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#include "compat_ioctl.c"
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#include <asm/mtrr.h>
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#include <asm/ia32.h>
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#include <asm/ia32.h>
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#define CODE
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#define CODE
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@ -85,90 +84,6 @@ static int rtc32_ioctl(unsigned fd, unsigned cmd, unsigned long arg)
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return sys_ioctl(fd,cmd,arg);
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return sys_ioctl(fd,cmd,arg);
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}
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}
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/* /proc/mtrr ioctls */
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struct mtrr_sentry32
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{
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compat_ulong_t base; /* Base address */
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compat_uint_t size; /* Size of region */
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compat_uint_t type; /* Type of region */
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};
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struct mtrr_gentry32
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{
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compat_ulong_t regnum; /* Register number */
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compat_uint_t base; /* Base address */
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compat_uint_t size; /* Size of region */
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compat_uint_t type; /* Type of region */
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};
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#define MTRR_IOCTL_BASE 'M'
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#define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32)
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#define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32)
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#define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32)
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#define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32)
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#define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32)
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#define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32)
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#define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32)
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#define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32)
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#define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32)
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#define MTRRIOC32_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32)
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static int mtrr_ioctl32(unsigned int fd, unsigned int cmd, unsigned long arg)
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{
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struct mtrr_gentry g;
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struct mtrr_sentry s;
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int get = 0, err = 0;
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struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)arg;
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mm_segment_t oldfs = get_fs();
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switch (cmd) {
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#define SET(x) case MTRRIOC32_ ## x ## _ENTRY: cmd = MTRRIOC_ ## x ## _ENTRY; break
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#define GET(x) case MTRRIOC32_ ## x ## _ENTRY: cmd = MTRRIOC_ ## x ## _ENTRY; get=1; break
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SET(ADD);
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SET(SET);
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SET(DEL);
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GET(GET);
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SET(KILL);
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SET(ADD_PAGE);
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SET(SET_PAGE);
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SET(DEL_PAGE);
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GET(GET_PAGE);
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SET(KILL_PAGE);
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}
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if (get) {
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err = get_user(g.regnum, &g32->regnum);
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err |= get_user(g.base, &g32->base);
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err |= get_user(g.size, &g32->size);
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err |= get_user(g.type, &g32->type);
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arg = (unsigned long)&g;
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} else {
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struct mtrr_sentry32 __user *s32 = (struct mtrr_sentry32 __user *)arg;
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err = get_user(s.base, &s32->base);
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err |= get_user(s.size, &s32->size);
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err |= get_user(s.type, &s32->type);
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arg = (unsigned long)&s;
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}
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if (err) return err;
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set_fs(KERNEL_DS);
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err = sys_ioctl(fd, cmd, arg);
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set_fs(oldfs);
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if (!err && get) {
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err = put_user(g.base, &g32->base);
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err |= put_user(g.size, &g32->size);
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err |= put_user(g.regnum, &g32->regnum);
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err |= put_user(g.type, &g32->type);
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}
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return err;
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}
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#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler) },
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#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler) },
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#define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd,sys_ioctl)
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#define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd,sys_ioctl)
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@ -193,17 +108,6 @@ HANDLE_IOCTL(RTC_IRQP_SET32, rtc32_ioctl)
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HANDLE_IOCTL(RTC_EPOCH_READ32, rtc32_ioctl)
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HANDLE_IOCTL(RTC_EPOCH_READ32, rtc32_ioctl)
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HANDLE_IOCTL(RTC_EPOCH_SET32, rtc32_ioctl)
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HANDLE_IOCTL(RTC_EPOCH_SET32, rtc32_ioctl)
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||||||
/* take care of sizeof(sizeof()) breakage */
|
/* take care of sizeof(sizeof()) breakage */
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||||||
/* mtrr */
|
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||||||
HANDLE_IOCTL(MTRRIOC32_ADD_ENTRY, mtrr_ioctl32)
|
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||||||
HANDLE_IOCTL(MTRRIOC32_SET_ENTRY, mtrr_ioctl32)
|
|
||||||
HANDLE_IOCTL(MTRRIOC32_DEL_ENTRY, mtrr_ioctl32)
|
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||||||
HANDLE_IOCTL(MTRRIOC32_GET_ENTRY, mtrr_ioctl32)
|
|
||||||
HANDLE_IOCTL(MTRRIOC32_KILL_ENTRY, mtrr_ioctl32)
|
|
||||||
HANDLE_IOCTL(MTRRIOC32_ADD_PAGE_ENTRY, mtrr_ioctl32)
|
|
||||||
HANDLE_IOCTL(MTRRIOC32_SET_PAGE_ENTRY, mtrr_ioctl32)
|
|
||||||
HANDLE_IOCTL(MTRRIOC32_DEL_PAGE_ENTRY, mtrr_ioctl32)
|
|
||||||
HANDLE_IOCTL(MTRRIOC32_GET_PAGE_ENTRY, mtrr_ioctl32)
|
|
||||||
HANDLE_IOCTL(MTRRIOC32_KILL_PAGE_ENTRY, mtrr_ioctl32)
|
|
||||||
};
|
};
|
||||||
|
|
||||||
int ioctl_table_size = ARRAY_SIZE(ioctl_start);
|
int ioctl_table_size = ARRAY_SIZE(ioctl_start);
|
||||||
|
|
|
@ -25,6 +25,7 @@
|
||||||
|
|
||||||
#include <linux/config.h>
|
#include <linux/config.h>
|
||||||
#include <linux/ioctl.h>
|
#include <linux/ioctl.h>
|
||||||
|
#include <linux/compat.h>
|
||||||
|
|
||||||
#define MTRR_IOCTL_BASE 'M'
|
#define MTRR_IOCTL_BASE 'M'
|
||||||
|
|
||||||
|
@ -105,4 +106,36 @@ static __inline__ int mtrr_del_page (int reg, unsigned long base,
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
#ifdef CONFIG_COMPAT
|
||||||
|
|
||||||
|
struct mtrr_sentry32
|
||||||
|
{
|
||||||
|
compat_ulong_t base; /* Base address */
|
||||||
|
compat_uint_t size; /* Size of region */
|
||||||
|
compat_uint_t type; /* Type of region */
|
||||||
|
};
|
||||||
|
|
||||||
|
struct mtrr_gentry32
|
||||||
|
{
|
||||||
|
compat_ulong_t regnum; /* Register number */
|
||||||
|
compat_uint_t base; /* Base address */
|
||||||
|
compat_uint_t size; /* Size of region */
|
||||||
|
compat_uint_t type; /* Type of region */
|
||||||
|
};
|
||||||
|
|
||||||
|
#define MTRR_IOCTL_BASE 'M'
|
||||||
|
|
||||||
|
#define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32)
|
||||||
|
#define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32)
|
||||||
|
#define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32)
|
||||||
|
#define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32)
|
||||||
|
#define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32)
|
||||||
|
#define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32)
|
||||||
|
#define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32)
|
||||||
|
#define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32)
|
||||||
|
#define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32)
|
||||||
|
#define MTRRIOC32_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32)
|
||||||
|
|
||||||
|
#endif /* CONFIG_COMPAT */
|
||||||
|
|
||||||
#endif /* _LINUX_MTRR_H */
|
#endif /* _LINUX_MTRR_H */
|
||||||
|
|
Loading…
Reference in New Issue