linuxOS_AP06/buildroot/package/libdrm/0004-HACK-Bypass-auth-APIs-by-default.patch
2025-06-03 12:28:32 +08:00

98 lines
2.5 KiB
Diff

From fc2b834365060574825c1ef6a153d9afb3c0c084 Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Wed, 12 Jan 2022 11:42:19 +0800
Subject: [PATCH 4/4] HACK: Bypass auth APIs by default
There're hacks in Rockchip's BSP kernels to ignore drm auth, so we can
bypass the related drm auth APIs here.
Bypass these auth APIs:
drmGetBusid, drmSetBusid, drmGetMagic, drmAuthMagic,
drmSetInterfaceVersion, drmSetMaster, drmDropMaster.
Set these environments to enable:
"DRM_GET_BUSID", "DRM_SET_BUSID", "DRM_GET_MAGIC", "DRM_AUTH_MAGIC",
"DRM_SET_VERSION", "DRM_SET_MASTER", "DRM_DROP_MASTER".
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
xf86drm.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/xf86drm.c b/xf86drm.c
index b1ae6bf..904ea8c 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -1507,6 +1507,9 @@ drm_public char *drmGetBusid(int fd)
{
drm_unique_t u;
+ if (!getenv("DRM_GET_BUSID"))
+ return strdup("");
+
memclear(u);
if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
@@ -1538,6 +1541,9 @@ drm_public int drmSetBusid(int fd, const char *busid)
{
drm_unique_t u;
+ if (!getenv("DRM_SET_BUSID"))
+ return 0;
+
memclear(u);
u.unique = (char *)busid;
u.unique_len = strlen(busid);
@@ -1552,6 +1558,9 @@ drm_public int drmGetMagic(int fd, drm_magic_t * magic)
{
drm_auth_t auth;
+ if (!getenv("DRM_GET_MAGIC"))
+ return 0;
+
memclear(auth);
*magic = 0;
@@ -1565,6 +1574,9 @@ drm_public int drmAuthMagic(int fd, drm_magic_t magic)
{
drm_auth_t auth;
+ if (!getenv("DRM_AUTH_MAGIC"))
+ return 0;
+
memclear(auth);
auth.magic = magic;
if (drmIoctl(fd, DRM_IOCTL_AUTH_MAGIC, &auth))
@@ -3063,6 +3075,9 @@ drm_public int drmSetInterfaceVersion(int fd, drmSetVersion *version)
int retcode = 0;
drm_set_version_t sv;
+ if (!getenv("DRM_SET_VERSION"))
+ return 0;
+
memclear(sv);
sv.drm_di_major = version->drm_di_major;
sv.drm_di_minor = version->drm_di_minor;
@@ -3261,11 +3276,17 @@ drm_public void drmCloseOnce(int fd)
drm_public int drmSetMaster(int fd)
{
- return drmIoctl(fd, DRM_IOCTL_SET_MASTER, NULL);
+ if (!getenv("DRM_SET_MASTER"))
+ return 0;
+
+ return drmIoctl(fd, DRM_IOCTL_SET_MASTER, NULL);
}
drm_public int drmDropMaster(int fd)
{
+ if (!getenv("DRM_DROP_MASTER"))
+ return 0;
+
return drmIoctl(fd, DRM_IOCTL_DROP_MASTER, NULL);
}
--
2.20.1