/* Use this to get at 32-bit user passed pointers.
* See sys_sparc32.c for description about it.
*/
-#define A(__x) compat_ptr(__x)
+#define A(__x) ((void __user *)(unsigned long)(__x))
static __inline__ void *alloc_user_space(long len)
{
static int fbiogetputcmap(unsigned int fd, 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;
+ struct fbcmap f;
int ret;
+ char red[256], green[256], blue[256];
+ u32 r, g, b;
+ mm_segment_t old_fs = get_fs();
- 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);
+ ret = get_user(f.index, &(((struct fbcmap32 __user *)arg)->index));
+ ret |= __get_user(f.count, &(((struct fbcmap32 __user *)arg)->count));
+ ret |= __get_user(r, &(((struct fbcmap32 __user *)arg)->red));
+ ret |= __get_user(g, &(((struct fbcmap32 __user *)arg)->green));
+ ret |= __get_user(b, &(((struct fbcmap32 __user *)arg)->blue));
if (ret)
return -EFAULT;
- return sys_ioctl(fd, (cmd == FBIOPUTCMAP32) ? FBIOPUTCMAP_SPARC : FBIOGETCMAP_SPARC, (unsigned long)p);
+ if ((f.index < 0) || (f.index > 255)) return -EINVAL;
+ if (f.index + f.count > 256)
+ f.count = 256 - f.index;
+ if (cmd == FBIOPUTCMAP32) {
+ ret = copy_from_user (red, A(r), f.count);
+ ret |= copy_from_user (green, A(g), f.count);
+ ret |= copy_from_user (blue, A(b), f.count);
+ if (ret)
+ return -EFAULT;
+ }
+ f.red = red; f.green = green; f.blue = blue;
+ set_fs (KERNEL_DS);
+ ret = sys_ioctl (fd, (cmd == FBIOPUTCMAP32) ? FBIOPUTCMAP_SPARC : FBIOGETCMAP_SPARC, (long)&f);
+ set_fs (old_fs);
+ if (!ret && cmd == FBIOGETCMAP32) {
+ ret = copy_to_user (A(r), red, f.count);
+ ret |= copy_to_user (A(g), green, f.count);
+ ret |= copy_to_user (A(b), blue, f.count);
+ }
+ return ret ? -EFAULT : 0;
}
struct fbcursor32 {
static int fbiogscursor(unsigned int fd, unsigned int cmd, unsigned long arg)
{
- struct fbcursor __user *p = compat_alloc_user_space(sizeof(*p));
- struct fbcursor32 __user *argp = (void __user *)arg;
- compat_uptr_t addr;
+ struct fbcursor f;
int ret;
+ char red[2], green[2], blue[2];
+ char image[128], mask[128];
+ u32 r, g, b;
+ u32 m, i;
+ mm_segment_t old_fs = get_fs();
- ret = copy_in_user(p, argp,
+ ret = copy_from_user (&f, (struct fbcursor32 __user *) arg,
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);
+ ret |= __get_user(f.size.x,
+ &(((struct fbcursor32 __user *)arg)->size.x));
+ ret |= __get_user(f.size.y,
+ &(((struct fbcursor32 __user *)arg)->size.y));
+ ret |= __get_user(f.cmap.index,
+ &(((struct fbcursor32 __user *)arg)->cmap.index));
+ ret |= __get_user(f.cmap.count,
+ &(((struct fbcursor32 __user *)arg)->cmap.count));
+ ret |= __get_user(r, &(((struct fbcursor32 __user *)arg)->cmap.red));
+ ret |= __get_user(g, &(((struct fbcursor32 __user *)arg)->cmap.green));
+ ret |= __get_user(b, &(((struct fbcursor32 __user *)arg)->cmap.blue));
+ ret |= __get_user(m, &(((struct fbcursor32 __user *)arg)->mask));
+ ret |= __get_user(i, &(((struct fbcursor32 __user *)arg)->image));
if (ret)
return -EFAULT;
- return sys_ioctl (fd, FBIOSCURSOR, (unsigned long)p);
+ if (f.set & FB_CUR_SETCMAP) {
+ if ((uint) f.size.y > 32)
+ return -EINVAL;
+ ret = copy_from_user (mask, A(m), f.size.y * 4);
+ ret |= copy_from_user (image, A(i), f.size.y * 4);
+ if (ret)
+ return -EFAULT;
+ f.image = image; f.mask = mask;
+ }
+ if (f.set & FB_CUR_SETCMAP) {
+ ret = copy_from_user (red, A(r), 2);
+ ret |= copy_from_user (green, A(g), 2);
+ ret |= copy_from_user (blue, A(b), 2);
+ if (ret)
+ return -EFAULT;
+ f.cmap.red = red; f.cmap.green = green; f.cmap.blue = blue;
+ }
+ set_fs (KERNEL_DS);
+ ret = sys_ioctl (fd, FBIOSCURSOR, (long)&f);
+ set_fs (old_fs);
+ return ret;
}
#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE)
static int drm32_version(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_version_t __user *uversion = (drm32_version_t __user *)arg;
- drm_version_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int n;
+ char __user *name_ptr, *date_ptr, *desc_ptr;
+ u32 tmp1, tmp2, tmp3;
+ drm_version_t kversion;
+ mm_segment_t old_fs;
int ret;
- if (clear_user(p, 3 * sizeof(int)) ||
- get_user(n, &uversion->name_len) ||
- put_user(n, &p->name_len) ||
- get_user(addr, &uversion->name) ||
- put_user(compat_ptr(addr), &p->name) ||
- get_user(n, &uversion->date_len) ||
- put_user(n, &p->date_len) ||
- get_user(addr, &uversion->date) ||
- put_user(compat_ptr(addr), &p->date) ||
- get_user(n, &uversion->desc_len) ||
- put_user(n, &p->desc_len) ||
- get_user(addr, &uversion->desc) ||
- put_user(compat_ptr(addr), &p->desc))
+ memset(&kversion, 0, sizeof(kversion));
+ if (get_user(kversion.name_len, &uversion->name_len) ||
+ get_user(kversion.date_len, &uversion->date_len) ||
+ get_user(kversion.desc_len, &uversion->desc_len) ||
+ get_user(tmp1, &uversion->name) ||
+ get_user(tmp2, &uversion->date) ||
+ get_user(tmp3, &uversion->desc))
return -EFAULT;
- ret = sys_ioctl(fd, DRM_IOCTL_VERSION, (unsigned long)p);
- if (ret)
- return ret;
-
- if (copy_in_user(uversion, p, 3 * sizeof(int)) ||
- get_user(n, &p->name_len) ||
- put_user(n, &uversion->name_len) ||
- get_user(n, &p->date_len) ||
- put_user(n, &uversion->date_len) ||
- get_user(n, &p->desc_len) ||
- put_user(n, &uversion->desc_len))
- return -EFAULT;
+ name_ptr = A(tmp1);
+ date_ptr = A(tmp2);
+ desc_ptr = A(tmp3);
- return 0;
+ ret = -ENOMEM;
+ if (kversion.name_len && name_ptr) {
+ kversion.name = kmalloc(kversion.name_len, GFP_KERNEL);
+ if (!kversion.name)
+ goto out;
+ }
+ if (kversion.date_len && date_ptr) {
+ kversion.date = kmalloc(kversion.date_len, GFP_KERNEL);
+ if (!kversion.date)
+ goto out;
+ }
+ if (kversion.desc_len && desc_ptr) {
+ kversion.desc = kmalloc(kversion.desc_len, GFP_KERNEL);
+ if (!kversion.desc)
+ goto out;
+ }
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_ioctl (fd, DRM_IOCTL_VERSION, (unsigned long)&kversion);
+ set_fs(old_fs);
+
+ if (!ret) {
+ if ((kversion.name &&
+ copy_to_user(name_ptr, kversion.name, kversion.name_len)) ||
+ (kversion.date &&
+ copy_to_user(date_ptr, kversion.date, kversion.date_len)) ||
+ (kversion.desc &&
+ copy_to_user(desc_ptr, kversion.desc, kversion.desc_len)))
+ ret = -EFAULT;
+ if (put_user(kversion.version_major, &uversion->version_major) ||
+ put_user(kversion.version_minor, &uversion->version_minor) ||
+ put_user(kversion.version_patchlevel, &uversion->version_patchlevel) ||
+ put_user(kversion.name_len, &uversion->name_len) ||
+ put_user(kversion.date_len, &uversion->date_len) ||
+ put_user(kversion.desc_len, &uversion->desc_len))
+ ret = -EFAULT;
+ }
+
+out:
+ if (kversion.name)
+ kfree(kversion.name);
+ if (kversion.date)
+ kfree(kversion.date);
+ if (kversion.desc)
+ kfree(kversion.desc);
+ return ret;
}
typedef struct drm32_unique {
static int drm32_getsetunique(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_unique_t __user *uarg = (drm32_unique_t __user *)arg;
- drm_unique_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int n;
+ drm_unique_t karg;
+ mm_segment_t old_fs;
+ char __user *uptr;
+ u32 tmp;
int ret;
- if (get_user(n, &uarg->unique_len) ||
- put_user(n, &p->unique_len) ||
- get_user(addr, &uarg->unique) ||
- put_user(compat_ptr(addr), &p->unique))
+ if (get_user(karg.unique_len, &uarg->unique_len))
return -EFAULT;
+ karg.unique = NULL;
+
+ if (get_user(tmp, &uarg->unique))
+ return -EFAULT;
+
+ uptr = A(tmp);
+ if (uptr) {
+ karg.unique = kmalloc(karg.unique_len, GFP_KERNEL);
+ if (!karg.unique)
+ return -ENOMEM;
+ if (cmd == DRM32_IOCTL_SET_UNIQUE &&
+ copy_from_user(karg.unique, uptr, karg.unique_len)) {
+ kfree(karg.unique);
+ return -EFAULT;
+ }
+ }
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
if (cmd == DRM32_IOCTL_GET_UNIQUE)
- ret = sys_ioctl (fd, DRM_IOCTL_GET_UNIQUE, (unsigned long)p);
+ ret = sys_ioctl (fd, DRM_IOCTL_GET_UNIQUE, (unsigned long)&karg);
else
- ret = sys_ioctl (fd, DRM_IOCTL_SET_UNIQUE, (unsigned long)p);
+ ret = sys_ioctl (fd, DRM_IOCTL_SET_UNIQUE, (unsigned long)&karg);
+ set_fs(old_fs);
- if (ret)
- return ret;
+ if (!ret) {
+ if (cmd == DRM32_IOCTL_GET_UNIQUE &&
+ uptr != NULL &&
+ copy_to_user(uptr, karg.unique, karg.unique_len))
+ ret = -EFAULT;
+ if (put_user(karg.unique_len, &uarg->unique_len))
+ ret = -EFAULT;
+ }
- if (get_user(n, &p->unique_len) || put_user(n, &uarg->unique_len))
- return -EFAULT;
+ if (karg.unique != NULL)
+ kfree(karg.unique);
- return 0;
+ return ret;
}
typedef struct drm32_map {
static int drm32_info_bufs(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_buf_info_t __user *uarg = (drm32_buf_info_t __user *)arg;
- drm_buf_info_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int n;
- int ret;
+ drm_buf_desc_t __user *ulist;
+ drm_buf_info_t karg;
+ mm_segment_t old_fs;
+ int orig_count, ret;
+ u32 tmp;
- if (get_user(n, &uarg->count) || put_user(n, &p->count) ||
- get_user(addr, &uarg->list) || put_user(compat_ptr(addr), &p->list))
+ if (get_user(karg.count, &uarg->count) ||
+ get_user(tmp, &uarg->list))
return -EFAULT;
- ret = sys_ioctl(fd, DRM_IOCTL_INFO_BUFS, (unsigned long)p);
- if (ret)
- return ret;
+ ulist = A(tmp);
- if (get_user(n, &p->count) || put_user(n, &uarg->count))
+ orig_count = karg.count;
+
+ karg.list = kmalloc(karg.count * sizeof(drm_buf_desc_t), GFP_KERNEL);
+ if (!karg.list)
return -EFAULT;
- return 0;
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_ioctl(fd, DRM_IOCTL_INFO_BUFS, (unsigned long) &karg);
+ set_fs(old_fs);
+
+ if (!ret) {
+ if (karg.count <= orig_count &&
+ (copy_to_user(ulist, karg.list,
+ karg.count * sizeof(drm_buf_desc_t))))
+ ret = -EFAULT;
+ if (put_user(karg.count, &uarg->count))
+ ret = -EFAULT;
+ }
+
+ kfree(karg.list);
+
+ return ret;
}
typedef struct drm32_buf_free {
static int drm32_free_bufs(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_buf_free_t __user *uarg = (drm32_buf_free_t __user *)arg;
- drm_buf_free_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int n;
+ drm_buf_free_t karg;
+ mm_segment_t old_fs;
+ int __user *ulist;
+ int ret;
+ u32 tmp;
- if (get_user(n, &uarg->count) || put_user(n, &p->count) ||
- get_user(addr, &uarg->list) || put_user(compat_ptr(addr), &p->list))
+ if (get_user(karg.count, &uarg->count) ||
+ get_user(tmp, &uarg->list))
return -EFAULT;
- return sys_ioctl(fd, DRM_IOCTL_FREE_BUFS, (unsigned long)p);
+ ulist = A(tmp);
+
+ karg.list = kmalloc(karg.count * sizeof(int), GFP_KERNEL);
+ if (!karg.list)
+ return -ENOMEM;
+
+ ret = -EFAULT;
+ if (copy_from_user(karg.list, ulist, (karg.count * sizeof(int))))
+ goto out;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_ioctl(fd, DRM_IOCTL_FREE_BUFS, (unsigned long) &karg);
+ set_fs(old_fs);
+
+out:
+ kfree(karg.list);
+
+ return ret;
}
typedef struct drm32_buf_pub {
{
drm32_buf_map_t __user *uarg = (drm32_buf_map_t __user *)arg;
drm32_buf_pub_t __user *ulist;
- drm_buf_map_t __user *arg64;
- drm_buf_pub_t __user *list;
+ drm_buf_map_t karg;
+ mm_segment_t old_fs;
int orig_count, ret, i;
- int n;
- compat_uptr_t addr;
+ u32 tmp1, tmp2;
- if (get_user(orig_count, &uarg->count))
+ if (get_user(karg.count, &uarg->count) ||
+ get_user(tmp1, &uarg->virtual) ||
+ get_user(tmp2, &uarg->list))
return -EFAULT;
- arg64 = compat_alloc_user_space(sizeof(drm_buf_map_t) +
- (size_t)orig_count * sizeof(drm_buf_pub_t));
- list = (void __user *)(arg64 + 1);
+ karg.virtual = (void *) (unsigned long) tmp1;
+ ulist = A(tmp2);
- if (put_user(orig_count, &arg64->count) ||
- put_user(list, &arg64->list) ||
- get_user(addr, &uarg->virtual) ||
- put_user(compat_ptr(addr), &arg64->virtual) ||
- get_user(addr, &uarg->list))
- return -EFAULT;
+ orig_count = karg.count;
- ulist = compat_ptr(addr);
-
- for (i = 0; i < orig_count; i++) {
- if (get_user(n, &ulist[i].idx) ||
- put_user(n, &list[i].idx) ||
- get_user(n, &ulist[i].total) ||
- put_user(n, &list[i].total) ||
- get_user(n, &ulist[i].used) ||
- put_user(n, &list[i].used) ||
- get_user(addr, &ulist[i].address) ||
- put_user(compat_ptr(addr), &list[i].address))
- return -EFAULT;
- }
+ karg.list = kmalloc(karg.count * sizeof(drm_buf_pub_t), GFP_KERNEL);
+ if (!karg.list)
+ return -ENOMEM;
- ret = sys_ioctl(fd, DRM_IOCTL_MAP_BUFS, (unsigned long) arg64);
- if (ret)
- return ret;
-
- for (i = 0; i < orig_count; i++) {
- void __user *p;
- if (get_user(n, &list[i].idx) ||
- put_user(n, &ulist[i].idx) ||
- get_user(n, &list[i].total) ||
- put_user(n, &ulist[i].total) ||
- get_user(n, &list[i].used) ||
- put_user(n, &ulist[i].used) ||
- get_user(p, &list[i].address) ||
- put_user((unsigned long)p, &ulist[i].address))
- return -EFAULT;
+ ret = -EFAULT;
+ for (i = 0; i < karg.count; i++) {
+ if (get_user(karg.list[i].idx, &ulist[i].idx) ||
+ get_user(karg.list[i].total, &ulist[i].total) ||
+ get_user(karg.list[i].used, &ulist[i].used) ||
+ get_user(tmp1, &ulist[i].address))
+ goto out;
+
+ karg.list[i].address = (void *) (unsigned long) tmp1;
}
- if (get_user(n, &arg64->count) || put_user(n, &uarg->count))
- return -EFAULT;
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_ioctl(fd, DRM_IOCTL_MAP_BUFS, (unsigned long) &karg);
+ set_fs(old_fs);
+
+ if (!ret) {
+ for (i = 0; i < orig_count; i++) {
+ tmp1 = (u32) (long) karg.list[i].address;
+ if (put_user(karg.list[i].idx, &ulist[i].idx) ||
+ put_user(karg.list[i].total, &ulist[i].total) ||
+ put_user(karg.list[i].used, &ulist[i].used) ||
+ put_user(tmp1, &ulist[i].address)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ }
+ if (put_user(karg.count, &uarg->count))
+ ret = -EFAULT;
+ }
- return 0;
+out:
+ kfree(karg.list);
+ return ret;
}
typedef struct drm32_dma {
static int drm32_dma(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_dma_t __user *uarg = (drm32_dma_t __user *) arg;
- drm_dma_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
+ int __user *u_si, *u_ss, *u_ri, *u_rs;
+ drm_dma_t karg;
+ mm_segment_t old_fs;
int ret;
-
- if (copy_in_user(p, uarg, 2 * sizeof(int)) ||
- get_user(addr, &uarg->send_indices) ||
- put_user(compat_ptr(addr), &p->send_indices) ||
- get_user(addr, &uarg->send_sizes) ||
- put_user(compat_ptr(addr), &p->send_sizes) ||
- copy_in_user(&p->flags, &uarg->flags, sizeof(drm_dma_flags_t)) ||
- copy_in_user(&p->request_count, &uarg->request_count, sizeof(int))||
- copy_in_user(&p->request_size, &uarg->request_size, sizeof(int)) ||
- get_user(addr, &uarg->request_indices) ||
- put_user(compat_ptr(addr), &p->request_indices) ||
- get_user(addr, &uarg->request_sizes) ||
- put_user(compat_ptr(addr), &p->request_sizes) ||
- copy_in_user(&p->granted_count, &uarg->granted_count, sizeof(int)))
+ u32 tmp1, tmp2, tmp3, tmp4;
+
+ karg.send_indices = karg.send_sizes = NULL;
+ karg.request_indices = karg.request_sizes = NULL;
+
+ if (get_user(karg.context, &uarg->context) ||
+ get_user(karg.send_count, &uarg->send_count) ||
+ get_user(tmp1, &uarg->send_indices) ||
+ get_user(tmp2, &uarg->send_sizes) ||
+ get_user(karg.flags, &uarg->flags) ||
+ get_user(karg.request_count, &uarg->request_count) ||
+ get_user(karg.request_size, &uarg->request_size) ||
+ get_user(tmp3, &uarg->request_indices) ||
+ get_user(tmp4, &uarg->request_sizes) ||
+ get_user(karg.granted_count, &uarg->granted_count))
return -EFAULT;
- ret = sys_ioctl(fd, DRM_IOCTL_DMA, (unsigned long)p);
- if (ret)
- return ret;
+ u_si = A(tmp1);
+ u_ss = A(tmp2);
+ u_ri = A(tmp3);
+ u_rs = A(tmp4);
+
+ if (karg.send_count) {
+ karg.send_indices = kmalloc(karg.send_count * sizeof(int), GFP_KERNEL);
+ karg.send_sizes = kmalloc(karg.send_count * sizeof(int), GFP_KERNEL);
+
+ ret = -ENOMEM;
+ if (!karg.send_indices || !karg.send_sizes)
+ goto out;
+
+ ret = -EFAULT;
+ if (copy_from_user(karg.send_indices, u_si,
+ (karg.send_count * sizeof(int))) ||
+ copy_from_user(karg.send_sizes, u_ss,
+ (karg.send_count * sizeof(int))))
+ goto out;
+ }
- if (copy_in_user(uarg, p, 2 * sizeof(int)) ||
- copy_in_user(&uarg->flags, &p->flags, sizeof(drm_dma_flags_t)) ||
- copy_in_user(&uarg->request_count, &p->request_count, sizeof(int))||
- copy_in_user(&uarg->request_size, &p->request_size, sizeof(int)) ||
- copy_in_user(&uarg->granted_count, &p->granted_count, sizeof(int)))
- return -EFAULT;
+ if (karg.request_count) {
+ karg.request_indices = kmalloc(karg.request_count * sizeof(int), GFP_KERNEL);
+ karg.request_sizes = kmalloc(karg.request_count * sizeof(int), GFP_KERNEL);
+
+ ret = -ENOMEM;
+ if (!karg.request_indices || !karg.request_sizes)
+ goto out;
- return 0;
+ ret = -EFAULT;
+ if (copy_from_user(karg.request_indices, u_ri,
+ (karg.request_count * sizeof(int))) ||
+ copy_from_user(karg.request_sizes, u_rs,
+ (karg.request_count * sizeof(int))))
+ goto out;
+ }
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_ioctl(fd, DRM_IOCTL_DMA, (unsigned long) &karg);
+ set_fs(old_fs);
+
+ if (!ret) {
+ if (put_user(karg.context, &uarg->context) ||
+ put_user(karg.send_count, &uarg->send_count) ||
+ put_user(karg.flags, &uarg->flags) ||
+ put_user(karg.request_count, &uarg->request_count) ||
+ put_user(karg.request_size, &uarg->request_size) ||
+ put_user(karg.granted_count, &uarg->granted_count))
+ ret = -EFAULT;
+
+ if (karg.send_count) {
+ if (copy_to_user(u_si, karg.send_indices,
+ (karg.send_count * sizeof(int))) ||
+ copy_to_user(u_ss, karg.send_sizes,
+ (karg.send_count * sizeof(int))))
+ ret = -EFAULT;
+ }
+ if (karg.request_count) {
+ if (copy_to_user(u_ri, karg.request_indices,
+ (karg.request_count * sizeof(int))) ||
+ copy_to_user(u_rs, karg.request_sizes,
+ (karg.request_count * sizeof(int))))
+ ret = -EFAULT;
+ }
+ }
+
+out:
+ if (karg.send_indices)
+ kfree(karg.send_indices);
+ if (karg.send_sizes)
+ kfree(karg.send_sizes);
+ if (karg.request_indices)
+ kfree(karg.request_indices);
+ if (karg.request_sizes)
+ kfree(karg.request_sizes);
+
+ return ret;
}
typedef struct drm32_ctx_res {
static int drm32_res_ctx(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_ctx_res_t __user *uarg = (drm32_ctx_res_t __user *) arg;
- drm_ctx_res_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int ret;
+ drm_ctx_t __user *ulist;
+ drm_ctx_res_t karg;
+ mm_segment_t old_fs;
+ int orig_count, ret;
+ u32 tmp;
- if (copy_in_user(p, uarg, sizeof(int)) ||
- get_user(addr, &uarg->contexts) ||
- put_user(compat_ptr(addr), &p->contexts))
+ karg.contexts = NULL;
+ if (get_user(karg.count, &uarg->count) ||
+ get_user(tmp, &uarg->contexts))
return -EFAULT;
- ret = sys_ioctl(fd, DRM_IOCTL_RES_CTX, (unsigned long)p);
- if (ret)
- return ret;
+ ulist = A(tmp);
- if (copy_in_user(uarg, p, sizeof(int)))
- return -EFAULT;
+ orig_count = karg.count;
+ if (karg.count && ulist) {
+ karg.contexts = kmalloc((karg.count * sizeof(drm_ctx_t)), GFP_KERNEL);
+ if (!karg.contexts)
+ return -ENOMEM;
+ if (copy_from_user(karg.contexts, ulist,
+ (karg.count * sizeof(drm_ctx_t)))) {
+ kfree(karg.contexts);
+ return -EFAULT;
+ }
+ }
- return 0;
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_ioctl(fd, DRM_IOCTL_RES_CTX, (unsigned long) &karg);
+ set_fs(old_fs);
+
+ if (!ret) {
+ if (orig_count) {
+ if (copy_to_user(ulist, karg.contexts,
+ (orig_count * sizeof(drm_ctx_t))))
+ ret = -EFAULT;
+ }
+ if (put_user(karg.count, &uarg->count))
+ ret = -EFAULT;
+ }
+
+ if (karg.contexts)
+ kfree(karg.contexts);
+
+ return ret;
}
#endif
git://git.onelab.eu / linux-2.6.git / blobdiff