Signed-off-by: Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx>
---
Makefile.am | 1 +
defs.h | 6 ++++-
drm.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
io.c | 2 +-
ioctl.c | 13 ++++++++-
5 files changed, 107 insertions(+), 3 deletions(-)
create mode 100644 drm.c
diff --git a/Makefile.am b/Makefile.am
index 549aebc..50d5140 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -121,6 +121,7 @@ strace_SOURCES = \
utime.c \
utimes.c \
v4l2.c \
+ drm.c \
vsprintf.c \
wait.c \
xattr.c
diff --git a/defs.h b/defs.h
index 77c819c..f77330b 100644
--- a/defs.h
+++ b/defs.h
@@ -559,7 +559,7 @@ extern const struct_ioctlent *ioctl_lookup(const unsigned int);
extern const struct_ioctlent *ioctl_next_match(const struct_ioctlent *);
extern void ioctl_print_code(const unsigned int);
extern int ioctl_decode(struct tcb *, const unsigned int, long);
-extern int ioctl_decode_command_number(const unsigned int);
+extern int ioctl_decode_command_number(struct tcb *, const unsigned int);
extern int block_ioctl(struct tcb *, const unsigned int, long);
extern int evdev_ioctl(struct tcb *, const unsigned int, long);
extern int loop_ioctl(struct tcb *, const unsigned int, long);
@@ -572,6 +572,10 @@ extern int term_ioctl(struct tcb *, const unsigned int, long);
extern int ubi_ioctl(struct tcb *, const unsigned int, long);
extern int v4l2_ioctl(struct tcb *, const unsigned int, long);
+extern int drm_is_priv(const unsigned int);
+extern int drm_is_driver(struct tcb *tcp, const char *name);
+extern int drm_ioctl(struct tcb *, const unsigned int, long);
+
extern int tv_nz(const struct timeval *);
extern int tv_cmp(const struct timeval *, const struct timeval *);
extern double tv_float(const struct timeval *);
diff --git a/drm.c b/drm.c
new file mode 100644
index 0000000..56ef98b
--- /dev/null
+++ b/drm.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2015 Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors:
+ * Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx>
+ */
+
+#include "defs.h"
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <string.h>
+#include <linux/limits.h>
+#include <stdint.h>
+#include <sys/ioctl.h>
+#include <linux/types.h>
+#include <drm.h>
+
+#define DRM_MAX_NAME_LEN 128
+
+inline int drm_is_priv(const unsigned int num)
+{
+ return (_IOC_NR(num) >= DRM_COMMAND_BASE &&
+ _IOC_NR(num) < DRM_COMMAND_END);
+}
+
+static int drm_get_driver_name(struct tcb *tcp, char *name, size_t bufsize)
+{
+ char path[PATH_MAX];
+ char link[PATH_MAX];
+ int ret;
+
+ ret = getfdpath(tcp, tcp->u_arg[0], path, PATH_MAX - 1);
+ if (!ret)
+ return ret;
+
+ snprintf(link, PATH_MAX, "/sys/class/drm/%s/device/driver",
+ basename(path));
+
+ ret = readlink(link, path, PATH_MAX - 1);
+ if (ret < 0)
+ return ret;
+
+ path[ret] = '\0';
+ strncpy(name, basename(path), bufsize);
+
+ return 0;
+}
+
+int drm_is_driver(struct tcb *tcp, const char *name)
+{
+ char drv[DRM_MAX_NAME_LEN];
+ int ret;
+
+ ret = drm_get_driver_name(tcp, drv, DRM_MAX_NAME_LEN);
+ if (ret)
+ return 0;
+
+ return strcmp(name, drv) == 0;
+}
+
+int drm_ioctl(struct tcb *tcp, const unsigned int code, long arg)
+{
+ return 0;
+}
diff --git a/io.c b/io.c
index 30ed578..6810a45 100644
--- a/io.c
+++ b/io.c
@@ -391,7 +391,7 @@ SYS_FUNC(ioctl)
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
- if (!ioctl_decode_command_number(tcp->u_arg[1])) {
+ if (!ioctl_decode_command_number(tcp, tcp->u_arg[1])) {
iop = ioctl_lookup(tcp->u_arg[1]);
if (iop) {
tprints(iop->symbol);
diff --git a/ioctl.c b/ioctl.c
index c67d048..690e7aa 100644
--- a/ioctl.c
+++ b/ioctl.c
@@ -181,8 +181,14 @@ hiddev_decode_number(unsigned int arg)
return 0;
}
+static int
+drm_decode_number(struct tcb *tcp, unsigned int arg)
+{
+ return 0;
+}
+
int
-ioctl_decode_command_number(unsigned int arg)
+ioctl_decode_command_number(struct tcb *tcp, unsigned int arg)
{
switch (_IOC_TYPE(arg)) {
case 'E':
@@ -216,6 +222,8 @@ ioctl_decode_command_number(unsigned int arg)
return 1;
}
return 0;
+ case 'd':
+ return drm_decode_number(tcp, arg);
default:
return 0;
}
@@ -252,6 +260,8 @@ ioctl_decode(struct tcb *tcp, unsigned int code, long arg)
return ubi_ioctl(tcp, code, arg);
case 'V':
return v4l2_ioctl(tcp, code, arg);
+ case 'd':
+ return drm_ioctl(tcp, code, arg);
case '=':
return ptp_ioctl(tcp, code, arg);
#ifdef HAVE_LINUX_INPUT_H
@@ -284,6 +294,7 @@ ioctl_decode(struct tcb *tcp, unsigned int code, long arg)
* d sys/des.h (possible overlap)
* d vax/dkio.h (possible overlap)
* d vaxuba/rxreg.h (possible overlap)
+ * d drm/drm.h
* f sys/filio.h
* g sunwindow/win_ioctl.h -no overlap-
* g sunwindowdev/winioctl.c !no manifest constant! -no overlap-
--
2.1.0
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