libv4l: Change controls shm segment name to include the username

From: Gregor Jasny <gjasny@googlemail.com>

Change controls shm segment name to include the username, as it is only
writable by the user (this means libv4l controls are per user)

Priority: normal

Signed-off-by: Gregor Jasny <gjasny@googlemail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/v4l2-apps/libv4l/libv4lconvert/libv4lconvert.c b/v4l2-apps/libv4l/libv4lconvert/libv4lconvert.c
index f5e9d9762..be4553cc7 100644
--- a/v4l2-apps/libv4l/libv4lconvert/libv4lconvert.c
+++ b/v4l2-apps/libv4l/libv4lconvert/libv4lconvert.c
@@ -95,8 +95,10 @@ struct v4lconvert_data *v4lconvert_create(int fd)
      processing controls without a performance impact. */
   int always_needs_conversion = 1;
 
-  if (!data)
+  if (!data) {
+    fprintf(stderr, "libv4lconvert: error: out of memory!\n");
     return NULL;
+  }
 
   data->fd = fd;
   data->decompress_pid = -1;