From 76b6ef85cded5e576dca6cd2840aeb0da9512287 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 6 Aug 2020 05:17:59 +0300 Subject: card: Add a method to retrieve the device minor The device minor number is needed to access the debugfs directory corresponding to the device. Make it available to users through a dev_minor() method on the Card object. Signed-off-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen --- kms++/src/card.cpp | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'kms++/src') diff --git a/kms++/src/card.cpp b/kms++/src/card.cpp index 527aca6..3a7ab70 100644 --- a/kms++/src/card.cpp +++ b/kms++/src/card.cpp @@ -9,6 +9,10 @@ #include #include +#include +#include +#include + #include #include @@ -183,8 +187,15 @@ void Card::setup() m_version.desc = string(ver->desc, ver->desc_len); drmFreeVersion(ver); + struct stat stats; int r; + r = fstat(m_fd, &stats); + if (r < 0) + throw invalid_argument("Can't stat device (" + string(strerror(errno)) + ")"); + + m_minor = minor(stats.st_dev); + r = drmSetMaster(m_fd); m_is_master = r == 0; -- cgit v1.2.3