| /* |
| * ioctl32.c: Conversion between 32bit and 64bit native ioctls. |
| * Separated from fs stuff by Arnd Bergmann <arnd@arndb.de> |
| * |
| * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com) |
| * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) |
| * Copyright (C) 2001,2002 Andi Kleen, SuSE Labs |
| * Copyright (C) 2003 Pavel Machek (pavel@suse.cz) |
| * Copyright (C) 2005 Philippe De Muyter (phdm@macqel.be) |
| * Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl> |
| * |
| * These routines maintain argument size conversion between 32bit and 64bit |
| * ioctls. |
| */ |
| |
| #include <linux/compat.h> |
| #define __OLD_VIDIOC_ /* To allow fixing old calls*/ |
| #include <linux/videodev.h> |
| #include <linux/videodev2.h> |
| #include <linux/module.h> |
| #include <linux/smp_lock.h> |
| #include <media/v4l2-ioctl.h> |
| |
| #ifdef CONFIG_COMPAT |
| |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| struct video_tuner32 { |
| compat_int_t tuner; |
| char name[32]; |
| compat_ulong_t rangelow, rangehigh; |
| u32 flags; /* It is really u32 in videodev.h */ |
| u16 mode, signal; |
| }; |
| |
| static int get_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up) |
| { |
| if (!access_ok(VERIFY_READ, up, sizeof(struct video_tuner32)) || |
| get_user(kp->tuner, &up->tuner) || |
| copy_from_user(kp->name, up->name, 32) || |
| get_user(kp->rangelow, &up->rangelow) || |
| get_user(kp->rangehigh, &up->rangehigh) || |
| get_user(kp->flags, &up->flags) || |
| get_user(kp->mode, &up->mode) || |
| get_user(kp->signal, &up->signal)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int put_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up) |
| { |
| if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_tuner32)) || |
| put_user(kp->tuner, &up->tuner) || |
| copy_to_user(up->name, kp->name, 32) || |
| put_user(kp->rangelow, &up->rangelow) || |
| put_user(kp->rangehigh, &up->rangehigh) || |
| put_user(kp->flags, &up->flags) || |
| put_user(kp->mode, &up->mode) || |
| put_user(kp->signal, &up->signal)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| struct video_buffer32 { |
| compat_caddr_t base; |
| compat_int_t height, width, depth, bytesperline; |
| }; |
| |
| static int get_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up) |
| { |
| u32 tmp; |
| |
| if (!access_ok(VERIFY_READ, up, sizeof(struct video_buffer32)) || |
| get_user(tmp, &up->base) || |
| get_user(kp->height, &up->height) || |
| get_user(kp->width, &up->width) || |
| get_user(kp->depth, &up->depth) || |
| get_user(kp->bytesperline, &up->bytesperline)) |
| return -EFAULT; |
| |
| /* This is actually a physical address stored |
| * as a void pointer. |
| */ |
| kp->base = (void *)(unsigned long) tmp; |
| |
| return 0; |
| } |
| |
| static int put_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up) |
| { |
| u32 tmp = (u32)((unsigned long)kp->base); |
| |
| if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_buffer32)) || |
| put_user(tmp, &up->base) || |
| put_user(kp->height, &up->height) || |
| put_user(kp->width, &up->width) || |
| put_user(kp->depth, &up->depth) || |
| put_user(kp->bytesperline, &up->bytesperline)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| struct video_clip32 { |
| s32 x, y, width, height; /* It's really s32 in videodev.h */ |
| compat_caddr_t next; |
| }; |
| |
| struct video_window32 { |
| u32 x, y, width, height, chromakey, flags; |
| compat_caddr_t clips; |
| compat_int_t clipcount; |
| }; |
| |
| static int get_video_window32(struct video_window *kp, struct video_window32 __user *up) |
| { |
| struct video_clip __user *uclips; |
| struct video_clip __user *kclips; |
| compat_caddr_t p; |
| int nclips; |
| |
| if (!access_ok(VERIFY_READ, up, sizeof(struct video_window32))) |
| return -EFAULT; |
| |
| if (get_user(nclips, &up->clipcount)) |
| return -EFAULT; |
| |
| if (!access_ok(VERIFY_READ, up, sizeof(struct video_window32)) || |
| get_user(kp->x, &up->x) || |
| get_user(kp->y, &up->y) || |
| get_user(kp->width, &up->width) || |
| get_user(kp->height, &up->height) || |
| get_user(kp->chromakey, &up->chromakey) || |
| get_user(kp->flags, &up->flags) || |
| get_user(kp->clipcount, &up->clipcount)) |
| return -EFAULT; |
| |
| nclips = kp->clipcount; |
| kp->clips = NULL; |
| |
| if (nclips == 0) |
| return 0; |
| if (get_user(p, &up->clips)) |
| return -EFAULT; |
| uclips = compat_ptr(p); |
| |
| /* If nclips < 0, then it is a clipping bitmap of size |
| VIDEO_CLIPMAP_SIZE */ |
| if (nclips < 0) { |
| if (!access_ok(VERIFY_READ, uclips, VIDEO_CLIPMAP_SIZE)) |
| return -EFAULT; |
| kp->clips = compat_alloc_user_space(VIDEO_CLIPMAP_SIZE); |
| if (copy_in_user(kp->clips, uclips, VIDEO_CLIPMAP_SIZE)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| /* Otherwise it is an array of video_clip structs. */ |
| if (!access_ok(VERIFY_READ, uclips, nclips * sizeof(struct video_clip))) |
| return -EFAULT; |
| |
| kp->clips = compat_alloc_user_space(nclips * sizeof(struct video_clip)); |
| kclips = kp->clips; |
| while (nclips--) { |
| int err; |
| |
| err = copy_in_user(&kclips->x, &uclips->x, sizeof(kclips->x)); |
| err |= copy_in_user(&kclips->y, &uclips->y, sizeof(kclips->y)); |
| err |= copy_in_user(&kclips->width, &uclips->width, sizeof(kclips->width)); |
| err |= copy_in_user(&kclips->height, &uclips->height, sizeof(kclips->height)); |
| kclips->next = NULL; |
| if (err) |
| return -EFAULT; |
| kclips++; |
| uclips++; |
| } |
| return 0; |
| } |
| |
| /* You get back everything except the clips... */ |
| static int put_video_window32(struct video_window *kp, struct video_window32 __user *up) |
| { |
| if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_window32)) || |
| put_user(kp->x, &up->x) || |
| put_user(kp->y, &up->y) || |
| put_user(kp->width, &up->width) || |
| put_user(kp->height, &up->height) || |
| put_user(kp->chromakey, &up->chromakey) || |
| put_user(kp->flags, &up->flags) || |
| put_user(kp->clipcount, &up->clipcount)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| struct video_code32 { |
| char loadwhat[16]; /* name or tag of file being passed */ |
| compat_int_t datasize; |
| compat_uptr_t data; |
| }; |
| |
| static struct video_code __user *get_microcode32(struct video_code32 *kp) |
| { |
| struct video_code __user *up; |
| |
| up = compat_alloc_user_space(sizeof(*up)); |
| |
| /* |
| * NOTE! We don't actually care if these fail. If the |
| * user address is invalid, the native ioctl will do |
| * the error handling for us |
| */ |
| (void) copy_to_user(up->loadwhat, kp->loadwhat, sizeof(up->loadwhat)); |
| (void) put_user(kp->datasize, &up->datasize); |
| (void) put_user(compat_ptr(kp->data), &up->data); |
| return up; |
| } |
| |
| #define VIDIOCGTUNER32 _IOWR('v', 4, struct video_tuner32) |
| #define VIDIOCSTUNER32 _IOW('v', 5, struct video_tuner32) |
| #define VIDIOCGWIN32 _IOR('v', 9, struct video_window32) |
| #define VIDIOCSWIN32 _IOW('v', 10, struct video_window32) |
| #define VIDIOCGFBUF32 _IOR('v', 11, struct video_buffer32) |
| #define VIDIOCSFBUF32 _IOW('v', 12, struct video_buffer32) |
| #define VIDIOCGFREQ32 _IOR('v', 14, u32) |
| #define VIDIOCSFREQ32 _IOW('v', 15, u32) |
| #define VIDIOCSMICROCODE32 _IOW('v', 27, struct video_code32) |
| |
| #define VIDIOCCAPTURE32 _IOW('v', 8, s32) |
| #define VIDIOCSYNC32 _IOW('v', 18, s32) |
| #define VIDIOCSWRITEMODE32 _IOW('v', 25, s32) |
| |
| #endif |
| |
| static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| { |
| long ret = -ENOIOCTLCMD; |
| |
| if (file->f_op->unlocked_ioctl) |
| ret = file->f_op->unlocked_ioctl(file, cmd, arg); |
| else if (file->f_op->ioctl) { |
| lock_kernel(); |
| ret = file->f_op->ioctl(file->f_path.dentry->d_inode, file, cmd, arg); |
| unlock_kernel(); |
| } |
| |
| return ret; |
| } |
| |
| |
| struct v4l2_clip32 { |
| struct v4l2_rect c; |
| compat_caddr_t next; |
| }; |
| |
| struct v4l2_window32 { |
| struct v4l2_rect w; |
| enum v4l2_field field; |
| __u32 chromakey; |
| compat_caddr_t clips; /* actually struct v4l2_clip32 * */ |
| __u32 clipcount; |
| compat_caddr_t bitmap; |
| }; |
| |
| static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) |
| { |
| if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) || |
| copy_from_user(&kp->w, &up->w, sizeof(up->w)) || |
| get_user(kp->field, &up->field) || |
| get_user(kp->chromakey, &up->chromakey) || |
| get_user(kp->clipcount, &up->clipcount)) |
| return -EFAULT; |
| if (kp->clipcount > 2048) |
| return -EINVAL; |
| if (kp->clipcount) { |
| struct v4l2_clip32 __user *uclips; |
| struct v4l2_clip __user *kclips; |
| int n = kp->clipcount; |
| compat_caddr_t p; |
| |
| if (get_user(p, &up->clips)) |
| return -EFAULT; |
| uclips = compat_ptr(p); |
| kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip)); |
| kp->clips = kclips; |
| while (--n >= 0) { |
| if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c))) |
| return -EFAULT; |
| if (put_user(n ? kclips + 1 : NULL, &kclips->next)) |
| return -EFAULT; |
| uclips += 1; |
| kclips += 1; |
| } |
| } else |
| kp->clips = NULL; |
| return 0; |
| } |
| |
| static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) |
| { |
| if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) || |
| put_user(kp->field, &up->field) || |
| put_user(kp->chromakey, &up->chromakey) || |
| put_user(kp->clipcount, &up->clipcount)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up) |
| { |
| if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up) |
| { |
| if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up) |
| { |
| if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up) |
| { |
| if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up) |
| { |
| if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up) |
| { |
| if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| struct v4l2_format32 { |
| enum v4l2_buf_type type; |
| union { |
| struct v4l2_pix_format pix; |
| struct v4l2_window32 win; |
| struct v4l2_vbi_format vbi; |
| struct v4l2_sliced_vbi_format sliced; |
| __u8 raw_data[200]; /* user-defined */ |
| } fmt; |
| }; |
| |
| static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) |
| { |
| if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) || |
| get_user(kp->type, &up->type)) |
| return -EFAULT; |
| switch (kp->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix); |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| return get_v4l2_window32(&kp->fmt.win, &up->fmt.win); |
| case V4L2_BUF_TYPE_VBI_CAPTURE: |
| case V4L2_BUF_TYPE_VBI_OUTPUT: |
| return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi); |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced); |
| case V4L2_BUF_TYPE_PRIVATE: |
| if (copy_from_user(kp, up, sizeof(kp->fmt.raw_data))) |
| return -EFAULT; |
| return 0; |
| case 0: |
| return -EINVAL; |
| default: |
| printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n", |
| kp->type); |
| return -EINVAL; |
| } |
| } |
| |
| static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) |
| { |
| if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) || |
| put_user(kp->type, &up->type)) |
| return -EFAULT; |
| switch (kp->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix); |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| return put_v4l2_window32(&kp->fmt.win, &up->fmt.win); |
| case V4L2_BUF_TYPE_VBI_CAPTURE: |
| case V4L2_BUF_TYPE_VBI_OUTPUT: |
| return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi); |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced); |
| case V4L2_BUF_TYPE_PRIVATE: |
| if (copy_to_user(up, kp, sizeof(up->fmt.raw_data))) |
| return -EFAULT; |
| return 0; |
| case 0: |
| return -EINVAL; |
| default: |
| printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n", |
| kp->type); |
| return -EINVAL; |
| } |
| } |
| |
| struct v4l2_standard32 { |
| __u32 index; |
| __u32 id[2]; /* __u64 would get the alignment wrong */ |
| __u8 name[24]; |
| struct v4l2_fract frameperiod; /* Frames, not fields */ |
| __u32 framelines; |
| __u32 reserved[4]; |
| }; |
| |
| static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) |
| { |
| /* other fields are not set by the user, nor used by the driver */ |
| if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) || |
| get_user(kp->index, &up->index)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) |
| { |
| if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) || |
| put_user(kp->index, &up->index) || |
| copy_to_user(up->id, &kp->id, sizeof(__u64)) || |
| copy_to_user(up->name, kp->name, 24) || |
| copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) || |
| put_user(kp->framelines, &up->framelines) || |
| copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| struct v4l2_buffer32 { |
| __u32 index; |
| enum v4l2_buf_type type; |
| __u32 bytesused; |
| __u32 flags; |
| enum v4l2_field field; |
| struct compat_timeval timestamp; |
| struct v4l2_timecode timecode; |
| __u32 sequence; |
| |
| /* memory location */ |
| enum v4l2_memory memory; |
| union { |
| __u32 offset; |
| compat_long_t userptr; |
| } m; |
| __u32 length; |
| __u32 input; |
| __u32 reserved; |
| }; |
| |
| static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up) |
| { |
| |
| if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) || |
| get_user(kp->index, &up->index) || |
| get_user(kp->type, &up->type) || |
| get_user(kp->flags, &up->flags) || |
| get_user(kp->memory, &up->memory) || |
| get_user(kp->input, &up->input)) |
| return -EFAULT; |
| switch (kp->memory) { |
| case V4L2_MEMORY_MMAP: |
| if (get_user(kp->length, &up->length) || |
| get_user(kp->m.offset, &up->m.offset)) |
| return -EFAULT; |
| break; |
| case V4L2_MEMORY_USERPTR: |
| { |
| compat_long_t tmp; |
| |
| if (get_user(kp->length, &up->length) || |
| get_user(tmp, &up->m.userptr)) |
| return -EFAULT; |
| |
| kp->m.userptr = (unsigned long)compat_ptr(tmp); |
| } |
| break; |
| case V4L2_MEMORY_OVERLAY: |
| if (get_user(kp->m.offset, &up->m.offset)) |
| return -EFAULT; |
| break; |
| } |
| return 0; |
| } |
| |
| static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up) |
| { |
| if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) || |
| put_user(kp->index, &up->index) || |
| put_user(kp->type, &up->type) || |
| put_user(kp->flags, &up->flags) || |
| put_user(kp->memory, &up->memory) || |
| put_user(kp->input, &up->input)) |
| return -EFAULT; |
| switch (kp->memory) { |
| case V4L2_MEMORY_MMAP: |
| if (put_user(kp->length, &up->length) || |
| put_user(kp->m.offset, &up->m.offset)) |
| return -EFAULT; |
| break; |
| case V4L2_MEMORY_USERPTR: |
| if (put_user(kp->length, &up->length) || |
| put_user(kp->m.userptr, &up->m.userptr)) |
| return -EFAULT; |
| break; |
| case V4L2_MEMORY_OVERLAY: |
| if (put_user(kp->m.offset, &up->m.offset)) |
| return -EFAULT; |
| break; |
| } |
| if (put_user(kp->bytesused, &up->bytesused) || |
| put_user(kp->field, &up->field) || |
| put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || |
| put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) || |
| copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) || |
| put_user(kp->sequence, &up->sequence) || |
| put_user(kp->reserved, &up->reserved)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| struct v4l2_framebuffer32 { |
| __u32 capability; |
| __u32 flags; |
| compat_caddr_t base; |
| struct v4l2_pix_format fmt; |
| }; |
| |
| static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up) |
| { |
| u32 tmp; |
| |
| if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) || |
| get_user(tmp, &up->base) || |
| get_user(kp->capability, &up->capability) || |
| get_user(kp->flags, &up->flags)) |
| return -EFAULT; |
| kp->base = compat_ptr(tmp); |
| get_v4l2_pix_format(&kp->fmt, &up->fmt); |
| return 0; |
| } |
| |
| static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up) |
| { |
| u32 tmp = (u32)((unsigned long)kp->base); |
| |
| if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) || |
| put_user(tmp, &up->base) || |
| put_user(kp->capability, &up->capability) || |
| put_user(kp->flags, &up->flags)) |
| return -EFAULT; |
| put_v4l2_pix_format(&kp->fmt, &up->fmt); |
| return 0; |
| } |
| |
| struct v4l2_input32 { |
| __u32 index; /* Which input */ |
| __u8 name[32]; /* Label */ |
| __u32 type; /* Type of input */ |
| __u32 audioset; /* Associated audios (bitfield) */ |
| __u32 tuner; /* Associated tuner */ |
| v4l2_std_id std; |
| __u32 status; |
| __u32 reserved[4]; |
| } __attribute__ ((packed)); |
| |
| /* The 64-bit v4l2_input struct has extra padding at the end of the struct. |
| Otherwise it is identical to the 32-bit version. */ |
| static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up) |
| { |
| if (copy_from_user(kp, up, sizeof(struct v4l2_input32))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up) |
| { |
| if (copy_to_user(up, kp, sizeof(struct v4l2_input32))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| struct v4l2_ext_controls32 { |
| __u32 ctrl_class; |
| __u32 count; |
| __u32 error_idx; |
| __u32 reserved[2]; |
| compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */ |
| }; |
| |
| struct v4l2_ext_control32 { |
| __u32 id; |
| __u32 size; |
| __u32 reserved2[1]; |
| union { |
| __s32 value; |
| __s64 value64; |
| compat_caddr_t string; /* actually char * */ |
| }; |
| } __attribute__ ((packed)); |
| |
| /* The following function really belong in v4l2-common, but that causes |
| a circular dependency between modules. We need to think about this, but |
| for now this will do. */ |
| |
| /* Return non-zero if this control is a pointer type. Currently only |
| type STRING is a pointer type. */ |
| static inline int ctrl_is_pointer(u32 id) |
| { |
| switch (id) { |
| case V4L2_CID_RDS_TX_PS_NAME: |
| case V4L2_CID_RDS_TX_RADIO_TEXT: |
| return 1; |
| default: |
| return 0; |
| } |
| } |
| |
| static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up) |
| { |
| struct v4l2_ext_control32 __user *ucontrols; |
| struct v4l2_ext_control __user *kcontrols; |
| int n; |
| compat_caddr_t p; |
| |
| if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) || |
| get_user(kp->ctrl_class, &up->ctrl_class) || |
| get_user(kp->count, &up->count) || |
| get_user(kp->error_idx, &up->error_idx) || |
| copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) |
| return -EFAULT; |
| n = kp->count; |
| if (n == 0) { |
| kp->controls = NULL; |
| return 0; |
| } |
| if (get_user(p, &up->controls)) |
| return -EFAULT; |
| ucontrols = compat_ptr(p); |
| if (!access_ok(VERIFY_READ, ucontrols, n * sizeof(struct v4l2_ext_control))) |
| return -EFAULT; |
| kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control)); |
| kp->controls = kcontrols; |
| while (--n >= 0) { |
| if (copy_in_user(kcontrols, ucontrols, sizeof(*kcontrols))) |
| return -EFAULT; |
| if (ctrl_is_pointer(kcontrols->id)) { |
| void __user *s; |
| |
| if (get_user(p, &ucontrols->string)) |
| return -EFAULT; |
| s = compat_ptr(p); |
| if (put_user(s, &kcontrols->string)) |
| return -EFAULT; |
| } |
| ucontrols++; |
| kcontrols++; |
| } |
| return 0; |
| } |
| |
| static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up) |
| { |
| struct v4l2_ext_control32 __user *ucontrols; |
| struct v4l2_ext_control __user *kcontrols = kp->controls; |
| int n = kp->count; |
| compat_caddr_t p; |
| |
| if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) || |
| put_user(kp->ctrl_class, &up->ctrl_class) || |
| put_user(kp->count, &up->count) || |
| put_user(kp->error_idx, &up->error_idx) || |
| copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) |
| return -EFAULT; |
| if (!kp->count) |
| return 0; |
| |
| if (get_user(p, &up->controls)) |
| return -EFAULT; |
| ucontrols = compat_ptr(p); |
| if (!access_ok(VERIFY_WRITE, ucontrols, n * sizeof(struct v4l2_ext_control))) |
| return -EFAULT; |
| |
| while (--n >= 0) { |
| unsigned size = sizeof(*ucontrols); |
| |
| /* Do not modify the pointer when copying a pointer control. |
| The contents of the pointer was changed, not the pointer |
| itself. */ |
| if (ctrl_is_pointer(kcontrols->id)) |
| size -= sizeof(ucontrols->value64); |
| if (copy_in_user(ucontrols, kcontrols, size)) |
| return -EFAULT; |
| ucontrols++; |
| kcontrols++; |
| } |
| return 0; |
| } |
| |
| #define VIDIOC_G_FMT32 _IOWR('V', 4, struct v4l2_format32) |
| #define VIDIOC_S_FMT32 _IOWR('V', 5, struct v4l2_format32) |
| #define VIDIOC_QUERYBUF32 _IOWR('V', 9, struct v4l2_buffer32) |
| #define VIDIOC_G_FBUF32 _IOR ('V', 10, struct v4l2_framebuffer32) |
| #define VIDIOC_S_FBUF32 _IOW ('V', 11, struct v4l2_framebuffer32) |
| #define VIDIOC_QBUF32 _IOWR('V', 15, struct v4l2_buffer32) |
| #define VIDIOC_DQBUF32 _IOWR('V', 17, struct v4l2_buffer32) |
| #define VIDIOC_ENUMSTD32 _IOWR('V', 25, struct v4l2_standard32) |
| #define VIDIOC_ENUMINPUT32 _IOWR('V', 26, struct v4l2_input32) |
| #define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32) |
| #define VIDIOC_G_EXT_CTRLS32 _IOWR('V', 71, struct v4l2_ext_controls32) |
| #define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32) |
| #define VIDIOC_TRY_EXT_CTRLS32 _IOWR('V', 73, struct v4l2_ext_controls32) |
| |
| #define VIDIOC_OVERLAY32 _IOW ('V', 14, s32) |
| #ifdef __OLD_VIDIOC_ |
| #define VIDIOC_OVERLAY32_OLD _IOWR('V', 14, s32) |
| #endif |
| #define VIDIOC_STREAMON32 _IOW ('V', 18, s32) |
| #define VIDIOC_STREAMOFF32 _IOW ('V', 19, s32) |
| #define VIDIOC_G_INPUT32 _IOR ('V', 38, s32) |
| #define VIDIOC_S_INPUT32 _IOWR('V', 39, s32) |
| #define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32) |
| #define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32) |
| |
| static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| { |
| union { |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| struct video_tuner vt; |
| struct video_buffer vb; |
| struct video_window vw; |
| struct video_code32 vc; |
| struct video_audio va; |
| #endif |
| struct v4l2_format v2f; |
| struct v4l2_buffer v2b; |
| struct v4l2_framebuffer v2fb; |
| struct v4l2_input v2i; |
| struct v4l2_standard v2s; |
| struct v4l2_ext_controls v2ecs; |
| unsigned long vx; |
| int vi; |
| } karg; |
| void __user *up = compat_ptr(arg); |
| int compatible_arg = 1; |
| long err = 0; |
| |
| /* First, convert the command. */ |
| switch (cmd) { |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| case VIDIOCGTUNER32: cmd = VIDIOCGTUNER; break; |
| case VIDIOCSTUNER32: cmd = VIDIOCSTUNER; break; |
| case VIDIOCGWIN32: cmd = VIDIOCGWIN; break; |
| case VIDIOCSWIN32: cmd = VIDIOCSWIN; break; |
| case VIDIOCGFBUF32: cmd = VIDIOCGFBUF; break; |
| case VIDIOCSFBUF32: cmd = VIDIOCSFBUF; break; |
| case VIDIOCGFREQ32: cmd = VIDIOCGFREQ; break; |
| case VIDIOCSFREQ32: cmd = VIDIOCSFREQ; break; |
| case VIDIOCSMICROCODE32: cmd = VIDIOCSMICROCODE; break; |
| #endif |
| case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break; |
| case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break; |
| case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break; |
| case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break; |
| case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break; |
| case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break; |
| case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break; |
| case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break; |
| case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break; |
| case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break; |
| case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break; |
| case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break; |
| case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break; |
| case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break; |
| #ifdef __OLD_VIDIOC_ |
| case VIDIOC_OVERLAY32_OLD: cmd = VIDIOC_OVERLAY; break; |
| #endif |
| case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break; |
| case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break; |
| case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break; |
| case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break; |
| case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break; |
| case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break; |
| } |
| |
| switch (cmd) { |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| case VIDIOCSTUNER: |
| case VIDIOCGTUNER: |
| err = get_video_tuner32(&karg.vt, up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOCSFBUF: |
| err = get_video_buffer32(&karg.vb, up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOCSWIN: |
| err = get_video_window32(&karg.vw, up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOCGWIN: |
| case VIDIOCGFBUF: |
| case VIDIOCGFREQ: |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOCSMICROCODE: |
| /* Copy the 32-bit "video_code32" to kernel space */ |
| if (copy_from_user(&karg.vc, up, sizeof(karg.vc))) |
| return -EFAULT; |
| /* Convert the 32-bit version to a 64-bit version in user space */ |
| up = get_microcode32(&karg.vc); |
| break; |
| |
| case VIDIOCSFREQ: |
| err = get_user(karg.vx, (u32 __user *)up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOCCAPTURE: |
| case VIDIOCSYNC: |
| case VIDIOCSWRITEMODE: |
| #endif |
| case VIDIOC_OVERLAY: |
| case VIDIOC_STREAMON: |
| case VIDIOC_STREAMOFF: |
| case VIDIOC_S_INPUT: |
| case VIDIOC_S_OUTPUT: |
| err = get_user(karg.vi, (s32 __user *)up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOC_G_INPUT: |
| case VIDIOC_G_OUTPUT: |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOC_G_FMT: |
| case VIDIOC_S_FMT: |
| case VIDIOC_TRY_FMT: |
| err = get_v4l2_format32(&karg.v2f, up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOC_QUERYBUF: |
| case VIDIOC_QBUF: |
| case VIDIOC_DQBUF: |
| err = get_v4l2_buffer32(&karg.v2b, up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOC_S_FBUF: |
| err = get_v4l2_framebuffer32(&karg.v2fb, up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOC_G_FBUF: |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOC_ENUMSTD: |
| err = get_v4l2_standard32(&karg.v2s, up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOC_ENUMINPUT: |
| err = get_v4l2_input32(&karg.v2i, up); |
| compatible_arg = 0; |
| break; |
| |
| case VIDIOC_G_EXT_CTRLS: |
| case VIDIOC_S_EXT_CTRLS: |
| case VIDIOC_TRY_EXT_CTRLS: |
| err = get_v4l2_ext_controls32(&karg.v2ecs, up); |
| compatible_arg = 0; |
| break; |
| } |
| if (err) |
| return err; |
| |
| if (compatible_arg) |
| err = native_ioctl(file, cmd, (unsigned long)up); |
| else { |
| mm_segment_t old_fs = get_fs(); |
| |
| set_fs(KERNEL_DS); |
| err = native_ioctl(file, cmd, (unsigned long)&karg); |
| set_fs(old_fs); |
| } |
| |
| /* Special case: even after an error we need to put the |
| results back for these ioctls since the error_idx will |
| contain information on which control failed. */ |
| switch (cmd) { |
| case VIDIOC_G_EXT_CTRLS: |
| case VIDIOC_S_EXT_CTRLS: |
| case VIDIOC_TRY_EXT_CTRLS: |
| if (put_v4l2_ext_controls32(&karg.v2ecs, up)) |
| err = -EFAULT; |
| break; |
| } |
| if (err) |
| return err; |
| |
| switch (cmd) { |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| case VIDIOCGTUNER: |
| err = put_video_tuner32(&karg.vt, up); |
| break; |
| |
| case VIDIOCGWIN: |
| err = put_video_window32(&karg.vw, up); |
| break; |
| |
| case VIDIOCGFBUF: |
| err = put_video_buffer32(&karg.vb, up); |
| break; |
| |
| case VIDIOCGFREQ: |
| err = put_user(((u32)karg.vx), (u32 __user *)up); |
| break; |
| #endif |
| case VIDIOC_S_INPUT: |
| case VIDIOC_S_OUTPUT: |
| case VIDIOC_G_INPUT: |
| case VIDIOC_G_OUTPUT: |
| err = put_user(((s32)karg.vi), (s32 __user *)up); |
| break; |
| |
| case VIDIOC_G_FBUF: |
| err = put_v4l2_framebuffer32(&karg.v2fb, up); |
| break; |
| |
| case VIDIOC_G_FMT: |
| case VIDIOC_S_FMT: |
| case VIDIOC_TRY_FMT: |
| err = put_v4l2_format32(&karg.v2f, up); |
| break; |
| |
| case VIDIOC_QUERYBUF: |
| case VIDIOC_QBUF: |
| case VIDIOC_DQBUF: |
| err = put_v4l2_buffer32(&karg.v2b, up); |
| break; |
| |
| case VIDIOC_ENUMSTD: |
| err = put_v4l2_standard32(&karg.v2s, up); |
| break; |
| |
| case VIDIOC_ENUMINPUT: |
| err = put_v4l2_input32(&karg.v2i, up); |
| break; |
| } |
| return err; |
| } |
| |
| long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg) |
| { |
| long ret = -ENOIOCTLCMD; |
| |
| if (!file->f_op->ioctl && !file->f_op->unlocked_ioctl) |
| return ret; |
| |
| switch (cmd) { |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| case VIDIOCGCAP: |
| case VIDIOCGCHAN: |
| case VIDIOCSCHAN: |
| case VIDIOCGTUNER32: |
| case VIDIOCSTUNER32: |
| case VIDIOCGPICT: |
| case VIDIOCSPICT: |
| case VIDIOCCAPTURE32: |
| case VIDIOCGWIN32: |
| case VIDIOCSWIN32: |
| case VIDIOCGFBUF32: |
| case VIDIOCSFBUF32: |
| case VIDIOCKEY: |
| case VIDIOCGFREQ32: |
| case VIDIOCSFREQ32: |
| case VIDIOCGAUDIO: |
| case VIDIOCSAUDIO: |
| case VIDIOCSYNC32: |
| case VIDIOCMCAPTURE: |
| case VIDIOCGMBUF: |
| case VIDIOCGUNIT: |
| case VIDIOCGCAPTURE: |
| case VIDIOCSCAPTURE: |
| case VIDIOCSPLAYMODE: |
| case VIDIOCSWRITEMODE32: |
| case VIDIOCGPLAYINFO: |
| case VIDIOCSMICROCODE32: |
| case VIDIOCGVBIFMT: |
| case VIDIOCSVBIFMT: |
| #endif |
| #ifdef __OLD_VIDIOC_ |
| case VIDIOC_OVERLAY32_OLD: |
| case VIDIOC_S_PARM_OLD: |
| case VIDIOC_S_CTRL_OLD: |
| case VIDIOC_G_AUDIO_OLD: |
| case VIDIOC_G_AUDOUT_OLD: |
| case VIDIOC_CROPCAP_OLD: |
| #endif |
| case VIDIOC_QUERYCAP: |
| case VIDIOC_RESERVED: |
| case VIDIOC_ENUM_FMT: |
| case VIDIOC_G_FMT32: |
| case VIDIOC_S_FMT32: |
| case VIDIOC_REQBUFS: |
| case VIDIOC_QUERYBUF32: |
| case VIDIOC_G_FBUF32: |
| case VIDIOC_S_FBUF32: |
| case VIDIOC_OVERLAY32: |
| case VIDIOC_QBUF32: |
| case VIDIOC_DQBUF32: |
| case VIDIOC_STREAMON32: |
| case VIDIOC_STREAMOFF32: |
| case VIDIOC_G_PARM: |
| case VIDIOC_S_PARM: |
| case VIDIOC_G_STD: |
| case VIDIOC_S_STD: |
| case VIDIOC_ENUMSTD32: |
| case VIDIOC_ENUMINPUT32: |
| case VIDIOC_G_CTRL: |
| case VIDIOC_S_CTRL: |
| case VIDIOC_G_TUNER: |
| case VIDIOC_S_TUNER: |
| case VIDIOC_G_AUDIO: |
| case VIDIOC_S_AUDIO: |
| case VIDIOC_QUERYCTRL: |
| case VIDIOC_QUERYMENU: |
| case VIDIOC_G_INPUT32: |
| case VIDIOC_S_INPUT32: |
| case VIDIOC_G_OUTPUT32: |
| case VIDIOC_S_OUTPUT32: |
| case VIDIOC_ENUMOUTPUT: |
| case VIDIOC_G_AUDOUT: |
| case VIDIOC_S_AUDOUT: |
| case VIDIOC_G_MODULATOR: |
| case VIDIOC_S_MODULATOR: |
| case VIDIOC_S_FREQUENCY: |
| case VIDIOC_G_FREQUENCY: |
| case VIDIOC_CROPCAP: |
| case VIDIOC_G_CROP: |
| case VIDIOC_S_CROP: |
| case VIDIOC_G_JPEGCOMP: |
| case VIDIOC_S_JPEGCOMP: |
| case VIDIOC_QUERYSTD: |
| case VIDIOC_TRY_FMT32: |
| case VIDIOC_ENUMAUDIO: |
| case VIDIOC_ENUMAUDOUT: |
| case VIDIOC_G_PRIORITY: |
| case VIDIOC_S_PRIORITY: |
| case VIDIOC_G_SLICED_VBI_CAP: |
| case VIDIOC_LOG_STATUS: |
| case VIDIOC_G_EXT_CTRLS32: |
| case VIDIOC_S_EXT_CTRLS32: |
| case VIDIOC_TRY_EXT_CTRLS32: |
| case VIDIOC_ENUM_FRAMESIZES: |
| case VIDIOC_ENUM_FRAMEINTERVALS: |
| case VIDIOC_G_ENC_INDEX: |
| case VIDIOC_ENCODER_CMD: |
| case VIDIOC_TRY_ENCODER_CMD: |
| case VIDIOC_DBG_S_REGISTER: |
| case VIDIOC_DBG_G_REGISTER: |
| case VIDIOC_DBG_G_CHIP_IDENT: |
| case VIDIOC_S_HW_FREQ_SEEK: |
| case VIDIOC_ENUM_DV_PRESETS: |
| case VIDIOC_S_DV_PRESET: |
| case VIDIOC_G_DV_PRESET: |
| case VIDIOC_QUERY_DV_PRESET: |
| case VIDIOC_S_DV_TIMINGS: |
| case VIDIOC_G_DV_TIMINGS: |
| case VIDIOC_DQEVENT: |
| case VIDIOC_SUBSCRIBE_EVENT: |
| case VIDIOC_UNSUBSCRIBE_EVENT: |
| ret = do_video_ioctl(file, cmd, arg); |
| break; |
| |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| /* BTTV specific... */ |
| case _IOW('v', BASE_VIDIOCPRIVATE+0, char [256]): |
| case _IOR('v', BASE_VIDIOCPRIVATE+1, char [256]): |
| case _IOR('v' , BASE_VIDIOCPRIVATE+2, unsigned int): |
| case _IOW('v' , BASE_VIDIOCPRIVATE+3, char [16]): /* struct bttv_pll_info */ |
| case _IOR('v' , BASE_VIDIOCPRIVATE+4, int): |
| case _IOR('v' , BASE_VIDIOCPRIVATE+5, int): |
| case _IOR('v' , BASE_VIDIOCPRIVATE+6, int): |
| case _IOR('v' , BASE_VIDIOCPRIVATE+7, int): |
| ret = native_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); |
| break; |
| #endif |
| default: |
| printk(KERN_WARNING "compat_ioctl32: " |
| "unknown ioctl '%c', dir=%d, #%d (0x%08x)\n", |
| _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), cmd); |
| break; |
| } |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32); |
| #endif |
| |
| MODULE_LICENSE("GPL"); |
