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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /include/linux/mtio.h
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'include/linux/mtio.h')
-rw-r--r--include/linux/mtio.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/include/linux/mtio.h b/include/linux/mtio.h
new file mode 100644
index 000000000..67d03156f
--- /dev/null
+++ b/include/linux/mtio.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_MTIO_COMPAT_H
+#define _LINUX_MTIO_COMPAT_H
+
+#include <linux/compat.h>
+#include <uapi/linux/mtio.h>
+#include <linux/uaccess.h>
+
+/*
+ * helper functions for implementing compat ioctls on the four tape
+ * drivers: we define the 32-bit layout of each incompatible structure,
+ * plus a wrapper function to copy it to user space in either format.
+ */
+
+struct mtget32 {
+ s32 mt_type;
+ s32 mt_resid;
+ s32 mt_dsreg;
+ s32 mt_gstat;
+ s32 mt_erreg;
+ s32 mt_fileno;
+ s32 mt_blkno;
+};
+#define MTIOCGET32 _IOR('m', 2, struct mtget32)
+
+struct mtpos32 {
+ s32 mt_blkno;
+};
+#define MTIOCPOS32 _IOR('m', 3, struct mtpos32)
+
+static inline int put_user_mtget(void __user *u, struct mtget *k)
+{
+ struct mtget32 k32 = {
+ .mt_type = k->mt_type,
+ .mt_resid = k->mt_resid,
+ .mt_dsreg = k->mt_dsreg,
+ .mt_gstat = k->mt_gstat,
+ .mt_erreg = k->mt_erreg,
+ .mt_fileno = k->mt_fileno,
+ .mt_blkno = k->mt_blkno,
+ };
+ int ret;
+
+ if (in_compat_syscall())
+ ret = copy_to_user(u, &k32, sizeof(k32));
+ else
+ ret = copy_to_user(u, k, sizeof(*k));
+
+ return ret ? -EFAULT : 0;
+}
+
+static inline int put_user_mtpos(void __user *u, struct mtpos *k)
+{
+ if (in_compat_syscall())
+ return put_user(k->mt_blkno, (u32 __user *)u);
+ else
+ return put_user(k->mt_blkno, (long __user *)u);
+}
+
+#endif