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path: root/drivers/media/video/v4l2-compat-ioctl32.c
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Diffstat (limited to 'drivers/media/video/v4l2-compat-ioctl32.c')
-rw-r--r--drivers/media/video/v4l2-compat-ioctl32.c1082
1 files changed, 1082 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c
new file mode 100644
index 000000000000..d0e1bd3ace6a
--- /dev/null
+++ b/drivers/media/video/v4l2-compat-ioctl32.c
@@ -0,0 +1,1082 @@
+/*
+ * 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;
+ unsigned char *data;
+};
+
+static int get_microcode32(struct video_code *kp, struct video_code32 __user *up)
+{
+ if (!access_ok(VERIFY_READ, up, sizeof(struct video_code32)) ||
+ copy_from_user(kp->loadwhat, up->loadwhat, sizeof(up->loadwhat)) ||
+ get_user(kp->datasize, &up->datasize) ||
+ copy_from_user(kp->data, up->data, up->datasize))
+ return -EFAULT;
+ return 0;
+}
+
+#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 int native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ int 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(up->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:
+ 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 * */
+};
+
+static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
+{
+ struct v4l2_ext_control __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->id, &ucontrols->id, sizeof(__u32)))
+ return -EFAULT;
+ if (copy_in_user(&kcontrols->reserved2, &ucontrols->reserved2, sizeof(ucontrols->reserved2)))
+ return -EFAULT;
+ /* Note: if the void * part of the union ever becomes relevant
+ then we need to know the type of the control in order to do
+ the right thing here. Luckily, that is not yet an issue. */
+ if (copy_in_user(&kcontrols->value, &ucontrols->value, sizeof(ucontrols->value)))
+ 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_control __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) {
+ if (copy_in_user(&ucontrols->id, &kcontrols->id, sizeof(__u32)))
+ return -EFAULT;
+ if (copy_in_user(&ucontrols->reserved2, &kcontrols->reserved2,
+ sizeof(ucontrols->reserved2)))
+ return -EFAULT;
+ /* Note: if the void * part of the union ever becomes relevant
+ then we need to know the type of the control in order to do
+ the right thing here. Luckily, that is not yet an issue. */
+ if (copy_in_user(&ucontrols->value, &kcontrols->value, sizeof(ucontrols->value)))
+ 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 int 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_code 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;
+ int 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:
+ err = get_microcode32(&karg.vc, up);
+ compatible_arg = 0;
+ 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 v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ int 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_G_CHIP_IDENT:
+ case VIDIOC_S_HW_FREQ_SEEK:
+ 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:
+ v4l_print_ioctl("compat_ioctl32", cmd);
+ printk(KERN_CONT "\n");
+ break;
+ }
+ return ret;
+}
+#else
+long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ return -ENOIOCTLCMD;
+}
+#endif
+EXPORT_SYMBOL_GPL(v4l_compat_ioctl32);
+
+MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.