* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
- * Authors: Alan Cox, <alan@redhat.com> (version 1)
+ * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
* Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
*/
#include <linux/kernel.h>
#define __OLD_VIDIOC_ /* To allow fixing old calls */
+#include <linux/videodev.h>
#include <linux/videodev2.h>
#ifdef CONFIG_VIDEO_V4L1
#endif
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
-#include <linux/video_decoder.h>
+#include <media/v4l2-chip-ident.h>
#define dbgarg(cmd, fmt, arg...) \
do { \
}
EXPORT_SYMBOL(v4l2_norm_to_name);
+/* Returns frame period for the given standard */
+void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
+{
+ if (id & V4L2_STD_525_60) {
+ frameperiod->numerator = 1001;
+ frameperiod->denominator = 30000;
+ } else {
+ frameperiod->numerator = 1;
+ frameperiod->denominator = 25;
+ }
+}
+EXPORT_SYMBOL(v4l2_video_std_frame_period);
+
/* Fill in the fields of a v4l2_standard structure according to the
'id' and 'transmission' parameters. Returns negative on error. */
int v4l2_video_std_construct(struct v4l2_standard *vs,
int id, const char *name)
{
- u32 index = vs->index;
-
- memset(vs, 0, sizeof(struct v4l2_standard));
- vs->index = index;
- vs->id = id;
- if (id & V4L2_STD_525_60) {
- vs->frameperiod.numerator = 1001;
- vs->frameperiod.denominator = 30000;
- vs->framelines = 525;
- } else {
- vs->frameperiod.numerator = 1;
- vs->frameperiod.denominator = 25;
- vs->framelines = 625;
- }
+ vs->id = id;
+ v4l2_video_std_frame_period(id, &vs->frameperiod);
+ vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
strlcpy(vs->name, name, sizeof(vs->name));
return 0;
}
[_IOC_NR(VIDIOC_DBG_S_REGISTER)] = "VIDIOC_DBG_S_REGISTER",
[_IOC_NR(VIDIOC_DBG_G_REGISTER)] = "VIDIOC_DBG_G_REGISTER",
- [_IOC_NR(VIDIOC_G_CHIP_IDENT)] = "VIDIOC_G_CHIP_IDENT",
+ [_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT",
[_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK",
#endif
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
static const char *v4l2_int_ioctls[] = {
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
- [_IOC_NR(DECODER_GET_CAPABILITIES)] = "DECODER_GET_CAPABILITIES",
- [_IOC_NR(DECODER_GET_STATUS)] = "DECODER_GET_STATUS",
- [_IOC_NR(DECODER_SET_NORM)] = "DECODER_SET_NORM",
- [_IOC_NR(DECODER_SET_INPUT)] = "DECODER_SET_INPUT",
- [_IOC_NR(DECODER_SET_OUTPUT)] = "DECODER_SET_OUTPUT",
- [_IOC_NR(DECODER_ENABLE_OUTPUT)] = "DECODER_ENABLE_OUTPUT",
- [_IOC_NR(DECODER_SET_PICTURE)] = "DECODER_SET_PICTURE",
- [_IOC_NR(DECODER_SET_GPIO)] = "DECODER_SET_GPIO",
- [_IOC_NR(DECODER_INIT)] = "DECODER_INIT",
- [_IOC_NR(DECODER_SET_VBI_BYPASS)] = "DECODER_SET_VBI_BYPASS",
- [_IOC_NR(DECODER_DUMP)] = "DECODER_DUMP",
-#endif
[_IOC_NR(AUDC_SET_RADIO)] = "AUDC_SET_RADIO",
[_IOC_NR(TUNER_SET_TYPE_ADDR)] = "TUNER_SET_TYPE_ADDR",
/*
* Obsolete usercopy function - Should be removed soon
*/
-int
-video_usercopy(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg,
- int (*func)(struct inode *inode, struct file *file,
- unsigned int cmd, void *arg))
+long
+video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
+ v4l2_kioctl func)
{
char sbuf[128];
void *mbuf = NULL;
void *parg = NULL;
- int err = -EINVAL;
+ long err = -EINVAL;
int is_ext_ctrl;
size_t ctrls_size = 0;
void __user *user_ptr = NULL;
}
/* call driver */
- err = func(inode, file, cmd, parg);
+ err = func(file, cmd, parg);
if (err == -ENOIOCTLCMD)
err = -EINVAL;
if (is_ext_ctrl) {
return -EINVAL;
}
-static int __video_do_ioctl(struct file *file,
+static long __video_do_ioctl(struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *vfd = video_devdata(file);
const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
void *fh = file->private_data;
- int ret = -EINVAL;
+ long ret = -EINVAL;
if ((vfd->debug & V4L2_DEBUG_IOCTL) &&
!(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) {
if (cmd == VIDIOCGMBUF) {
struct video_mbuf *p = arg;
- memset(p, 0, sizeof(*p));
-
if (!ops->vidiocgmbuf)
return ret;
ret = ops->vidiocgmbuf(file, fh, p);
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *cap = (struct v4l2_capability *)arg;
- memset(cap, 0, sizeof(*cap));
if (!ops->vidioc_querycap)
break;
case VIDIOC_ENUM_FMT:
{
struct v4l2_fmtdesc *f = arg;
- enum v4l2_buf_type type;
- unsigned int index;
-
- index = f->index;
- type = f->type;
- memset(f, 0, sizeof(*f));
- f->index = index;
- f->type = type;
- switch (type) {
+ switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (ops->vidioc_enum_fmt_vid_cap)
ret = ops->vidioc_enum_fmt_vid_cap(file, fh, f);
{
struct v4l2_format *f = (struct v4l2_format *)arg;
- memset(f->fmt.raw_data, 0, sizeof(f->fmt.raw_data));
-
/* FIXME: Should be one dump per type */
dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names));
return -EINVAL;
v4l2_video_std_construct(p, curr_id, descr);
- p->index = index;
dbgarg(cmd, "index=%d, id=0x%Lx, name=%s, fps=%d/%d, "
"framelines=%d\n", p->index,
case VIDIOC_ENUMINPUT:
{
struct v4l2_input *p = arg;
- int i = p->index;
if (!ops->vidioc_enum_input)
break;
- memset(p, 0, sizeof(*p));
- p->index = i;
ret = ops->vidioc_enum_input(file, fh, p);
if (!ret)
case VIDIOC_ENUMOUTPUT:
{
struct v4l2_output *p = arg;
- int i = p->index;
if (!ops->vidioc_enum_output)
break;
- memset(p, 0, sizeof(*p));
- p->index = i;
ret = ops->vidioc_enum_output(file, fh, p);
if (!ret)
case VIDIOC_G_AUDIO:
{
struct v4l2_audio *p = arg;
- __u32 index = p->index;
if (!ops->vidioc_g_audio)
break;
- memset(p, 0, sizeof(*p));
- p->index = index;
ret = ops->vidioc_g_audio(file, fh, p);
if (!ret)
dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
if (!ops->vidioc_g_audout)
break;
- dbgarg(cmd, "Enum for index=%d\n", p->index);
+
ret = ops->vidioc_g_audout(file, fh, p);
if (!ret)
dbgarg2("index=%d, name=%s, capability=%d, "
if (!ops->vidioc_g_crop)
break;
+
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
ret = ops->vidioc_g_crop(file, fh, p);
if (!ret)
/*FIXME: Should also show v4l2_fract pixelaspect */
if (!ops->vidioc_cropcap)
break;
+
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
ret = ops->vidioc_cropcap(file, fh, p);
if (!ret) {
if (!ops->vidioc_g_jpegcomp)
break;
+
ret = ops->vidioc_g_jpegcomp(file, fh, p);
if (!ret)
dbgarg(cmd, "quality=%d, APPn=%d, "
if (!ops->vidioc_encoder_cmd)
break;
- memset(&p->raw, 0, sizeof(p->raw));
ret = ops->vidioc_encoder_cmd(file, fh, p);
if (!ret)
dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
if (!ops->vidioc_try_encoder_cmd)
break;
- memset(&p->raw, 0, sizeof(p->raw));
ret = ops->vidioc_try_encoder_cmd(file, fh, p);
if (!ret)
dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
case VIDIOC_G_PARM:
{
struct v4l2_streamparm *p = arg;
- __u32 type = p->type;
-
- memset(p, 0, sizeof(*p));
- p->type = type;
if (ops->vidioc_g_parm) {
+ ret = check_fmt(ops, p->type);
+ if (ret)
+ break;
ret = ops->vidioc_g_parm(file, fh, p);
} else {
- struct v4l2_standard s;
-
if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- v4l2_video_std_construct(&s, vfd->current_norm,
- v4l2_norm_to_name(vfd->current_norm));
-
- p->parm.capture.timeperframe = s.frameperiod;
+ v4l2_video_std_frame_period(vfd->current_norm,
+ &p->parm.capture.timeperframe);
ret = 0;
}
if (!ops->vidioc_s_parm)
break;
+ ret = check_fmt(ops, p->type);
+ if (ret)
+ break;
+
dbgarg(cmd, "type=%d\n", p->type);
ret = ops->vidioc_s_parm(file, fh, p);
break;
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *p = arg;
- __u32 index = p->index;
if (!ops->vidioc_g_tuner)
break;
- memset(p, 0, sizeof(*p));
- p->index = index;
-
ret = ops->vidioc_g_tuner(file, fh, p);
if (!ret)
dbgarg(cmd, "index=%d, name=%s, type=%d, "
if (!ops->vidioc_g_frequency)
break;
- memset(p->reserved, 0, sizeof(p->reserved));
-
ret = ops->vidioc_g_frequency(file, fh, p);
if (!ret)
dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n",
case VIDIOC_G_SLICED_VBI_CAP:
{
struct v4l2_sliced_vbi_cap *p = arg;
- __u32 type = p->type;
if (!ops->vidioc_g_sliced_vbi_cap)
break;
- memset(p, 0, sizeof(*p));
- p->type = type;
+
+ /* Clear up to type, everything after type is zerod already */
+ memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
+
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p);
if (!ret)
#ifdef CONFIG_VIDEO_ADV_DEBUG
case VIDIOC_DBG_G_REGISTER:
{
- struct v4l2_register *p = arg;
+ struct v4l2_dbg_register *p = arg;
if (!capable(CAP_SYS_ADMIN))
ret = -EPERM;
}
case VIDIOC_DBG_S_REGISTER:
{
- struct v4l2_register *p = arg;
+ struct v4l2_dbg_register *p = arg;
if (!capable(CAP_SYS_ADMIN))
ret = -EPERM;
break;
}
#endif
- case VIDIOC_G_CHIP_IDENT:
+ case VIDIOC_DBG_G_CHIP_IDENT:
{
- struct v4l2_chip_ident *p = arg;
+ struct v4l2_dbg_chip_ident *p = arg;
if (!ops->vidioc_g_chip_ident)
break;
+ p->ident = V4L2_IDENT_NONE;
+ p->revision = 0;
ret = ops->vidioc_g_chip_ident(file, fh, p);
if (!ret)
dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
ret = ops->vidioc_s_hw_freq_seek(file, fh, p);
break;
}
+ case VIDIOC_ENUM_FRAMESIZES:
+ {
+ struct v4l2_frmsizeenum *p = arg;
+
+ if (!ops->vidioc_enum_framesizes)
+ break;
+
+ ret = ops->vidioc_enum_framesizes(file, fh, p);
+ dbgarg(cmd,
+ "index=%d, pixelformat=%d, type=%d ",
+ p->index, p->pixel_format, p->type);
+ switch (p->type) {
+ case V4L2_FRMSIZE_TYPE_DISCRETE:
+ dbgarg2("width = %d, height=%d\n",
+ p->discrete.width, p->discrete.height);
+ break;
+ case V4L2_FRMSIZE_TYPE_STEPWISE:
+ dbgarg2("min %dx%d, max %dx%d, step %dx%d\n",
+ p->stepwise.min_width, p->stepwise.min_height,
+ p->stepwise.step_width, p->stepwise.step_height,
+ p->stepwise.max_width, p->stepwise.max_height);
+ break;
+ case V4L2_FRMSIZE_TYPE_CONTINUOUS:
+ dbgarg2("continuous\n");
+ break;
+ default:
+ dbgarg2("- Unknown type!\n");
+ }
+
+ break;
+ }
+ case VIDIOC_ENUM_FRAMEINTERVALS:
+ {
+ struct v4l2_frmivalenum *p = arg;
+
+ if (!ops->vidioc_enum_frameintervals)
+ break;
+
+ ret = ops->vidioc_enum_frameintervals(file, fh, p);
+ dbgarg(cmd,
+ "index=%d, pixelformat=%d, width=%d, height=%d, type=%d ",
+ p->index, p->pixel_format,
+ p->width, p->height, p->type);
+ switch (p->type) {
+ case V4L2_FRMIVAL_TYPE_DISCRETE:
+ dbgarg2("fps=%d/%d\n",
+ p->discrete.numerator,
+ p->discrete.denominator);
+ break;
+ case V4L2_FRMIVAL_TYPE_STEPWISE:
+ dbgarg2("min=%d/%d, max=%d/%d, step=%d/%d\n",
+ p->stepwise.min.numerator,
+ p->stepwise.min.denominator,
+ p->stepwise.max.numerator,
+ p->stepwise.max.denominator,
+ p->stepwise.step.numerator,
+ p->stepwise.step.denominator);
+ break;
+ case V4L2_FRMIVAL_TYPE_CONTINUOUS:
+ dbgarg2("continuous\n");
+ break;
+ default:
+ dbgarg2("- Unknown type!\n");
+ }
+ break;
+ }
+
default:
{
if (!ops->vidioc_default)
if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
if (ret < 0) {
v4l_print_ioctl(vfd->name, cmd);
- printk(KERN_CONT " error %d\n", ret);
+ printk(KERN_CONT " error %ld\n", ret);
}
}
return ret;
}
-int video_ioctl2(struct inode *inode, struct file *file,
+/* In some cases, only a few fields are used as input, i.e. when the app sets
+ * "index" and then the driver fills in the rest of the structure for the thing
+ * with that index. We only need to copy up the first non-input field. */
+static unsigned long cmd_input_size(unsigned int cmd)
+{
+ /* Size of structure up to and including 'field' */
+#define CMDINSIZE(cmd, type, field) \
+ case VIDIOC_##cmd: \
+ return offsetof(struct v4l2_##type, field) + \
+ sizeof(((struct v4l2_##type *)0)->field);
+
+ switch (cmd) {
+ CMDINSIZE(ENUM_FMT, fmtdesc, type);
+ CMDINSIZE(G_FMT, format, type);
+ CMDINSIZE(QUERYBUF, buffer, type);
+ CMDINSIZE(G_PARM, streamparm, type);
+ CMDINSIZE(ENUMSTD, standard, index);
+ CMDINSIZE(ENUMINPUT, input, index);
+ CMDINSIZE(G_CTRL, control, id);
+ CMDINSIZE(G_TUNER, tuner, index);
+ CMDINSIZE(QUERYCTRL, queryctrl, id);
+ CMDINSIZE(QUERYMENU, querymenu, index);
+ CMDINSIZE(ENUMOUTPUT, output, index);
+ CMDINSIZE(G_MODULATOR, modulator, index);
+ CMDINSIZE(G_FREQUENCY, frequency, tuner);
+ CMDINSIZE(CROPCAP, cropcap, type);
+ CMDINSIZE(G_CROP, crop, type);
+ CMDINSIZE(ENUMAUDIO, audio, index);
+ CMDINSIZE(ENUMAUDOUT, audioout, index);
+ CMDINSIZE(ENCODER_CMD, encoder_cmd, flags);
+ CMDINSIZE(TRY_ENCODER_CMD, encoder_cmd, flags);
+ CMDINSIZE(G_SLICED_VBI_CAP, sliced_vbi_cap, type);
+ CMDINSIZE(ENUM_FRAMESIZES, frmsizeenum, pixel_format);
+ CMDINSIZE(ENUM_FRAMEINTERVALS, frmivalenum, height);
+ default:
+ return _IOC_SIZE(cmd);
+ }
+}
+
+long video_ioctl2(struct file *file,
unsigned int cmd, unsigned long arg)
{
char sbuf[128];
void *mbuf = NULL;
void *parg = NULL;
- int err = -EINVAL;
+ long err = -EINVAL;
int is_ext_ctrl;
size_t ctrls_size = 0;
void __user *user_ptr = NULL;
cmd == VIDIOC_TRY_EXT_CTRLS);
/* Copy arguments into temp kernel buffer */
- switch (_IOC_DIR(cmd)) {
- case _IOC_NONE:
- parg = NULL;
- break;
- case _IOC_READ:
- case _IOC_WRITE:
- case (_IOC_WRITE | _IOC_READ):
+ if (_IOC_DIR(cmd) != _IOC_NONE) {
if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
parg = sbuf;
} else {
}
err = -EFAULT;
- if (_IOC_DIR(cmd) & _IOC_WRITE)
- if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
+ if (_IOC_DIR(cmd) & _IOC_WRITE) {
+ unsigned long n = cmd_input_size(cmd);
+
+ if (copy_from_user(parg, (void __user *)arg, n))
goto out;
- break;
+
+ /* zero out anything we don't copy from userspace */
+ if (n < _IOC_SIZE(cmd))
+ memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
+ } else {
+ /* read-only ioctl */
+ memset(parg, 0, _IOC_SIZE(cmd));
+ }
}
if (is_ext_ctrl) {
return err;
}
EXPORT_SYMBOL(video_ioctl2);
-
-long video_ioctl2_unlocked(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- return video_ioctl2(file->f_path.dentry->d_inode, file, cmd, arg);
-}
-EXPORT_SYMBOL(video_ioctl2_unlocked);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff