[PATCH libdrm 01/10] xf86drm: drmGetDevice2: error out if the fd has unknown subsys
Emil Velikov
emil.l.velikov at gmail.com
Mon Jun 25 17:36:17 UTC 2018
From: Emil Velikov <emil.velikov at collabora.com>
Currently one can open() any /dev node. If it's unknown
drmParseSubsystemType() will return an error.
Track that and bail as needed.
Signed-off-by: Emil Velikov <emil.velikov at collabora.com>
---
xf86drm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/xf86drm.c b/xf86drm.c
index 87c216cf..e1bbbe99 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -3814,6 +3814,8 @@ int drmGetDevice2(int fd, uint32_t flags, drmDevicePtr *device)
return -EINVAL;
subsystem_type = drmParseSubsystemType(maj, min);
+ if (subsystem_type < 0)
+ return subsystem_type;
local_devices = calloc(max_count, sizeof(drmDevicePtr));
if (local_devices == NULL)
--
2.18.0
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