forked from ~ljy/RK356X_SDK_RELEASE

blame | history | patch | commit | commitdiff
hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/sound/core/rawmidi_compat.c
....@@ -1,21 +1,7 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *   32bit -> 64bit ioctl wrapper for raw MIDI API
34  *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
4
- *
5
- *   This program is free software; you can redistribute it and/or modify
6
- *   it under the terms of the GNU General Public License as published by
7
- *   the Free Software Foundation; either version 2 of the License, or
8
- *   (at your option) any later version.
9
- *
10
- *   This program is distributed in the hope that it will be useful,
11
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
12
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13
- *   GNU General Public License for more details.
14
- *
15
- *   You should have received a copy of the GNU General Public License
16
- *   along with this program; if not, write to the Free Software
17
- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
18
- *
195  */
206 
217 /* This file included from rawmidi.c */
....@@ -55,19 +41,22 @@
5541 	return -EINVAL;
5642 }
5743 
58
-struct snd_rawmidi_status32 {
44
+struct compat_snd_rawmidi_status64 {
5945 	s32 stream;
60
-	struct compat_timespec tstamp;
46
+	u8 rsvd[4]; /* alignment */
47
+	s64 tstamp_sec;
48
+	s64 tstamp_nsec;
6149 	u32 avail;
6250 	u32 xruns;
6351 	unsigned char reserved[16];
6452 } __attribute__((packed));
6553 
66
-static int snd_rawmidi_ioctl_status_compat(struct snd_rawmidi_file *rfile,
67
-					   struct snd_rawmidi_status32 __user *src)
54
+static int snd_rawmidi_ioctl_status_compat64(struct snd_rawmidi_file *rfile,
55
+					     struct compat_snd_rawmidi_status64 __user *src)
6856 {
6957 	int err;
70
-	struct snd_rawmidi_status status;
58
+	struct snd_rawmidi_status64 status;
59
+	struct compat_snd_rawmidi_status64 compat_status;
7160 
7261 	if (get_user(status.stream, &src->stream))
7362 		return -EFAULT;
....@@ -89,68 +78,24 @@
8978 	if (err < 0)
9079 		return err;
9180 
92
-	if (compat_put_timespec(&status.tstamp, &src->tstamp) ||
93
-	    put_user(status.avail, &src->avail) ||
94
-	    put_user(status.xruns, &src->xruns))
81
+	compat_status = (struct compat_snd_rawmidi_status64) {
82
+		.stream = status.stream,
83
+		.tstamp_sec = status.tstamp_sec,
84
+		.tstamp_nsec = status.tstamp_nsec,
85
+		.avail = status.avail,
86
+		.xruns = status.xruns,
87
+	};
88
+
89
+	if (copy_to_user(src, &compat_status, sizeof(*src)))
9590 		return -EFAULT;
9691 
9792 	return 0;
9893 }
99
-
100
-#ifdef CONFIG_X86_X32
101
-/* X32 ABI has 64bit timespec and 64bit alignment */
102
-struct snd_rawmidi_status_x32 {
103
-	s32 stream;
104
-	u32 rsvd; /* alignment */
105
-	struct timespec tstamp;
106
-	u32 avail;
107
-	u32 xruns;
108
-	unsigned char reserved[16];
109
-} __attribute__((packed));
110
-
111
-#define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
112
-
113
-static int snd_rawmidi_ioctl_status_x32(struct snd_rawmidi_file *rfile,
114
-					struct snd_rawmidi_status_x32 __user *src)
115
-{
116
-	int err;
117
-	struct snd_rawmidi_status status;
118
-
119
-	if (get_user(status.stream, &src->stream))
120
-		return -EFAULT;
121
-
122
-	switch (status.stream) {
123
-	case SNDRV_RAWMIDI_STREAM_OUTPUT:
124
-		if (!rfile->output)
125
-			return -EINVAL;
126
-		err = snd_rawmidi_output_status(rfile->output, &status);
127
-		break;
128
-	case SNDRV_RAWMIDI_STREAM_INPUT:
129
-		if (!rfile->input)
130
-			return -EINVAL;
131
-		err = snd_rawmidi_input_status(rfile->input, &status);
132
-		break;
133
-	default:
134
-		return -EINVAL;
135
-	}
136
-	if (err < 0)
137
-		return err;
138
-
139
-	if (put_timespec(&status.tstamp, &src->tstamp) ||
140
-	    put_user(status.avail, &src->avail) ||
141
-	    put_user(status.xruns, &src->xruns))
142
-		return -EFAULT;
143
-
144
-	return 0;
145
-}
146
-#endif /* CONFIG_X86_X32 */
14794 
14895 enum {
14996 	SNDRV_RAWMIDI_IOCTL_PARAMS32 = _IOWR('W', 0x10, struct snd_rawmidi_params32),
150
-	SNDRV_RAWMIDI_IOCTL_STATUS32 = _IOWR('W', 0x20, struct snd_rawmidi_status32),
151
-#ifdef CONFIG_X86_X32
152
-	SNDRV_RAWMIDI_IOCTL_STATUS_X32 = _IOWR('W', 0x20, struct snd_rawmidi_status_x32),
153
-#endif /* CONFIG_X86_X32 */
97
+	SNDRV_RAWMIDI_IOCTL_STATUS_COMPAT32 = _IOWR('W', 0x20, struct snd_rawmidi_status32),
98
+	SNDRV_RAWMIDI_IOCTL_STATUS_COMPAT64 = _IOWR('W', 0x20, struct compat_snd_rawmidi_status64),
15499 };
155100 
156101 static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
....@@ -167,12 +112,10 @@
167112 		return snd_rawmidi_ioctl(file, cmd, (unsigned long)argp);
168113 	case SNDRV_RAWMIDI_IOCTL_PARAMS32:
169114 		return snd_rawmidi_ioctl_params_compat(rfile, argp);
170
-	case SNDRV_RAWMIDI_IOCTL_STATUS32:
171
-		return snd_rawmidi_ioctl_status_compat(rfile, argp);
172
-#ifdef CONFIG_X86_X32
173
-	case SNDRV_RAWMIDI_IOCTL_STATUS_X32:
174
-		return snd_rawmidi_ioctl_status_x32(rfile, argp);
175
-#endif /* CONFIG_X86_X32 */
115
+	case SNDRV_RAWMIDI_IOCTL_STATUS_COMPAT32:
116
+		return snd_rawmidi_ioctl_status32(rfile, argp);
117
+	case SNDRV_RAWMIDI_IOCTL_STATUS_COMPAT64:
118
+		return snd_rawmidi_ioctl_status_compat64(rfile, argp);
176119 	}
177120 	return -ENOIOCTLCMD;
178121 }