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@ -0,0 +1,29 @@
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From 3f9022bdfe3d720ea27cb688512b4672d26a6dd6 Mon Sep 17 00:00:00 2001
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From: Peter Hutterer <peter.hutterer@who-t.net>
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Date: Mon, 8 Oct 2018 12:55:37 +1000
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Subject: [PATCH xf86-video-v4l 1/4] Remove unused variable osname
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Coverity is unhappy and there's enough unhappiness in this world already, so
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let's go for the low-hanging fruit.
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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
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Reviewed-by: Dave Airlie <airlied@redhat.com>
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---
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src/v4l.c | 1 -
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1 file changed, 1 deletion(-)
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diff --git a/src/v4l.c b/src/v4l.c
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index 8db8f7d..0f1058e 100644
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--- a/src/v4l.c
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+++ b/src/v4l.c
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@@ -86,7 +86,6 @@ _X_EXPORT XF86ModuleData v4lModuleData = { &v4lVersRec, v4lSetup, NULL };
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static pointer
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v4lSetup(pointer module, pointer opts, int *errmaj, int *errmin)
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{
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- const char *osname;
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static Bool setupDone = FALSE;
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if (setupDone) {
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--
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2.17.1
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@ -0,0 +1,43 @@
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From a020fda02fd0aca0c53b2368e6602bbd12002936 Mon Sep 17 00:00:00 2001
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From: Peter Hutterer <peter.hutterer@who-t.net>
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Date: Mon, 8 Oct 2018 12:55:57 +1000
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Subject: [PATCH xf86-video-v4l 2/4] Ensure the device name is null-terminated
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And expand the size to 18, because the stack array we copied this into is 18
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bytes long. This covers us for up to 999 (kernel) v4l devices and that is
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definitely not a reason to use the "640k ought to be enough" meme.
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Found by - you guessed it - coverity!
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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
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Reviewed-by: Dave Airlie <airlied@redhat.com>
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---
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src/v4l.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/src/v4l.c b/src/v4l.c
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index 0f1058e..583c7b8 100644
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--- a/src/v4l.c
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+++ b/src/v4l.c
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@@ -188,7 +188,7 @@ static const XF86AttributeRec FreqAttr =
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static struct V4L_DEVICE {
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int fd;
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int useCount;
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- char devName[16];
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+ char devName[18];
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} v4l_devices[MAX_V4L_DEVICES] = {
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{ -1 },
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{ -1 },
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@@ -1157,7 +1157,8 @@ V4LInit(ScrnInfoPtr pScrn, XF86VideoAdaptorPtr **adaptors)
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}
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xf86Msg(X_INFO, "v4l: enabling overlay mode for %s.\n", dev);
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- strncpy(V4L_NAME, dev, 16);
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+ strncpy(V4L_NAME, dev, 18);
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+ V4L_NAME[17] = '\0';
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V4LBuildEncodings(pPPriv, fd);
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if (NULL == pPPriv->enc)
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return FALSE;
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--
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2.17.1
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@ -0,0 +1,41 @@
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From 3370b6b6a41a27123a45b95ba4820395127c84e7 Mon Sep 17 00:00:00 2001
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From: Peter Hutterer <peter.hutterer@who-t.net>
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Date: Mon, 8 Oct 2018 13:05:09 +1000
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Subject: [PATCH xf86-video-v4l 3/4] Fix handling of realloc failure
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Coverity complaint and whatnot
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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
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Reviewed-by: Dave Airlie <airlied@redhat.com>
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---
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src/v4l.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/src/v4l.c b/src/v4l.c
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index 583c7b8..8c2408c 100644
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--- a/src/v4l.c
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+++ b/src/v4l.c
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@@ -1120,6 +1120,7 @@ V4LInit(ScrnInfoPtr pScrn, XF86VideoAdaptorPtr **adaptors)
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XF86VideoAdaptorPtr *VAR = NULL;
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char dev[18];
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int fd,i,j,d;
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+ void *tmp;
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for (i = 0, d = 0; d < MAX_V4L_DEVICES; d++) {
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sprintf(dev, "/dev/video%d", d);
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@@ -1164,7 +1165,11 @@ V4LInit(ScrnInfoPtr pScrn, XF86VideoAdaptorPtr **adaptors)
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return FALSE;
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/* alloc VideoAdaptorRec */
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- VAR = realloc(VAR,sizeof(XF86VideoAdaptorPtr)*(i+1));
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+ tmp = realloc(VAR,sizeof(XF86VideoAdaptorPtr)*(i+1));
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+ if (!tmp)
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+ return FALSE;
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+ VAR = tmp;
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+
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VAR[i] = malloc(sizeof(XF86VideoAdaptorRec));
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if (!VAR[i])
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return FALSE;
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--
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2.17.1
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@ -0,0 +1,42 @@
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From b3244827d97c6659842544b9cc175631e13ae8f3 Mon Sep 17 00:00:00 2001
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From: Peter Hutterer <peter.hutterer@who-t.net>
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Date: Mon, 8 Oct 2018 13:06:41 +1000
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Subject: [PATCH xf86-video-v4l 4/4] Fix ioctl return value handling
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Found by coverity
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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
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Reviewed-by: Dave Airlie <airlied@redhat.com>
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---
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src/v4l.c | 15 +++++++++------
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1 file changed, 9 insertions(+), 6 deletions(-)
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diff --git a/src/v4l.c b/src/v4l.c
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index 8c2408c..9c6fabe 100644
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--- a/src/v4l.c
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+++ b/src/v4l.c
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@@ -769,12 +769,15 @@ V4lSetPortAttribute(ScrnInfoPtr pScrn,
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} else if (attribute == xvFreq) {
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struct v4l2_frequency freq;
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memset(&freq, 0, sizeof(freq));
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- ioctl(V4L_FD, VIDIOC_G_FREQUENCY, &freq);
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- freq.frequency = value;
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- if (ioctl(V4L_FD, VIDIOC_S_FREQUENCY, &freq) == -1)
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- xf86Msg(X_ERROR, "v4l: Error %d while setting frequency\n", errno);
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- else
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- ret = Success;
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+ if (ioctl(V4L_FD, VIDIOC_G_FREQUENCY, &freq) == -1) {
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+ xf86Msg(X_ERROR, "v4l: Error %d while getting frequency\n", errno);
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+ } else {
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+ freq.frequency = value;
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+ if (ioctl(V4L_FD, VIDIOC_S_FREQUENCY, &freq) == -1)
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+ xf86Msg(X_ERROR, "v4l: Error %d while setting frequency\n", errno);
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+ else
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+ ret = Success;
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+ }
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} else {
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for (i = 0; i < pPPriv->n_qctrl; i++)
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if (pPPriv->XvV4LCtrl[i].xv == attribute)
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--
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2.17.1
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