diff options
Diffstat (limited to 'drivers/video/sbuslib.c')
| -rw-r--r-- | drivers/video/sbuslib.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/video/sbuslib.c b/drivers/video/sbuslib.c index 34f72edba820..3a74a63dd4f2 100644 --- a/drivers/video/sbuslib.c +++ b/drivers/video/sbuslib.c @@ -3,6 +3,7 @@ * Copyright (C) 2003 David S. Miller (davem@redhat.com) */ +#include <linux/compat.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/string.h> @@ -45,6 +46,9 @@ int sbusfb_mmap_helper(struct sbus_mmap_map *map, unsigned long off; int i; + if (!(vma->vm_flags & (VM_SHARED | VM_MAYSHARE))) + return -EINVAL; + size = vma->vm_end - vma->vm_start; if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) return -EINVAL; @@ -182,3 +186,109 @@ int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg, }; } EXPORT_SYMBOL(sbusfb_ioctl_helper); + +#ifdef CONFIG_COMPAT +struct fbcmap32 { + int index; /* first element (0 origin) */ + int count; + u32 red; + u32 green; + u32 blue; +}; + +#define FBIOPUTCMAP32 _IOW('F', 3, struct fbcmap32) +#define FBIOGETCMAP32 _IOW('F', 4, struct fbcmap32) + +static int fbiogetputcmap(struct file *file, struct fb_info *info, + unsigned int cmd, unsigned long arg) +{ + struct fbcmap32 __user *argp = (void __user *)arg; + struct fbcmap __user *p = compat_alloc_user_space(sizeof(*p)); + u32 addr; + int ret; + + ret = copy_in_user(p, argp, 2 * sizeof(int)); + ret |= get_user(addr, &argp->red); + ret |= put_user(compat_ptr(addr), &p->red); + ret |= get_user(addr, &argp->green); + ret |= put_user(compat_ptr(addr), &p->green); + ret |= get_user(addr, &argp->blue); + ret |= put_user(compat_ptr(addr), &p->blue); + if (ret) + return -EFAULT; + return info->fbops->fb_ioctl(file->f_dentry->d_inode, file, + (cmd == FBIOPUTCMAP32) ? + FBIOPUTCMAP_SPARC : FBIOGETCMAP_SPARC, + (unsigned long)p, info); +} + +struct fbcursor32 { + short set; /* what to set, choose from the list above */ + short enable; /* cursor on/off */ + struct fbcurpos pos; /* cursor position */ + struct fbcurpos hot; /* cursor hot spot */ + struct fbcmap32 cmap; /* color map info */ + struct fbcurpos size; /* cursor bit map size */ + u32 image; /* cursor image bits */ + u32 mask; /* cursor mask bits */ +}; + +#define FBIOSCURSOR32 _IOW('F', 24, struct fbcursor32) +#define FBIOGCURSOR32 _IOW('F', 25, struct fbcursor32) + +static int fbiogscursor(struct file *file, struct fb_info *info, + unsigned long arg) +{ + struct fbcursor __user *p = compat_alloc_user_space(sizeof(*p)); + struct fbcursor32 __user *argp = (void __user *)arg; + compat_uptr_t addr; + int ret; + + ret = copy_in_user(p, argp, + 2 * sizeof (short) + 2 * sizeof(struct fbcurpos)); + ret |= copy_in_user(&p->size, &argp->size, sizeof(struct fbcurpos)); + ret |= copy_in_user(&p->cmap, &argp->cmap, 2 * sizeof(int)); + ret |= get_user(addr, &argp->cmap.red); + ret |= put_user(compat_ptr(addr), &p->cmap.red); + ret |= get_user(addr, &argp->cmap.green); + ret |= put_user(compat_ptr(addr), &p->cmap.green); + ret |= get_user(addr, &argp->cmap.blue); + ret |= put_user(compat_ptr(addr), &p->cmap.blue); + ret |= get_user(addr, &argp->mask); + ret |= put_user(compat_ptr(addr), &p->mask); + ret |= get_user(addr, &argp->image); + ret |= put_user(compat_ptr(addr), &p->image); + if (ret) + return -EFAULT; + return info->fbops->fb_ioctl(file->f_dentry->d_inode, file, + FBIOSCURSOR, (unsigned long)p, info); +} + +long sbusfb_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg, struct fb_info *info) +{ + switch (cmd) { + case FBIOGTYPE: + case FBIOSATTR: + case FBIOGATTR: + case FBIOSVIDEO: + case FBIOGVIDEO: + case FBIOGCURSOR32: /* This is not implemented yet. + Later it should be converted... */ + case FBIOSCURPOS: + case FBIOGCURPOS: + case FBIOGCURMAX: + return info->fbops->fb_ioctl(file->f_dentry->d_inode, + file, cmd, arg, info); + case FBIOPUTCMAP32: + return fbiogetputcmap(file, info, cmd, arg); + case FBIOGETCMAP32: + return fbiogetputcmap(file, info, cmd, arg); + case FBIOSCURSOR32: + return fbiogscursor(file, info, arg); + default: + return -ENOIOCTLCMD; + } +} +EXPORT_SYMBOL(sbusfb_compat_ioctl); +#endif |