1 /* $NetBSD: linux_mtio.c,v 1.9 2024/10/01 16:41:29 riastradh Exp $ */
2
3 /*
4 * Copyright (c) 2005 Soren S. Jorvang. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions, and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: linux_mtio.c,v 1.9 2024/10/01 16:41:29 riastradh Exp $");
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/ioctl.h>
34 #include <sys/file.h>
35 #include <sys/filedesc.h>
36 #include <sys/mount.h>
37 #include <sys/proc.h>
38
39 #include <sys/mtio.h>
40
41 #include <sys/syscallargs.h>
42
43 #include <compat/linux/common/linux_types.h>
44 #include <compat/linux/common/linux_ioctl.h>
45 #include <compat/linux/common/linux_signal.h>
46 #include <compat/linux/common/linux_mtio.h>
47 #include <compat/linux/common/linux_ipc.h>
48 #include <compat/linux/common/linux_sem.h>
49
50 #include <compat/linux/linux_syscallargs.h>
51
52 static const struct mtop_mapping {
53 short lop;
54 short op;
55 } mtop_map[] = {
56 { LINUX_MTFSF, MTFSF },
57 { LINUX_MTBSF, MTBSF },
58 { LINUX_MTFSR, MTFSR },
59 { LINUX_MTBSR, MTBSR },
60 { LINUX_MTWEOF, MTWEOF },
61 { LINUX_MTREW, MTREW },
62 { LINUX_MTOFFL, MTOFFL },
63 { LINUX_MTNOP, MTNOP },
64 { LINUX_MTRETEN, MTRETEN },
65 { LINUX_MTEOM, MTEOM },
66 { LINUX_MTERASE, MTERASE },
67 { LINUX_MTSETBLK, MTSETBSIZ },
68 { LINUX_MTSETDENSITY, MTSETDNSTY },
69 { LINUX_MTCOMPRESSION, MTCMPRESS },
70 { -1, -1 }
71 };
72
73 int
linux_ioctl_mtio(struct lwp * l,const struct linux_sys_ioctl_args * uap,register_t * retval)74 linux_ioctl_mtio(struct lwp *l, const struct linux_sys_ioctl_args *uap,
75 register_t *retval)
76 {
77 file_t *fp;
78 u_long com = SCARG(uap, com);
79 int i, error = 0;
80 int (*ioctlf)(file_t *, u_long, void *);
81 struct linux_mtop lmtop;
82 struct linux_mtget lmtget;
83 struct mtop mt;
84
85 if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
86 return EBADF;
87
88 ioctlf = fp->f_ops->fo_ioctl;
89
90 *retval = 0;
91 switch (com) {
92 case LINUX_MTIOCTOP:
93 error = copyin(SCARG(uap, data), &lmtop, sizeof lmtop);
94 for (i = 0; mtop_map[i].lop >= 0; i++) {
95 if (mtop_map[i].lop == lmtop.mt_op)
96 break;
97 }
98
99 if (mtop_map[i].lop == -1) {
100 error = EINVAL;
101 break;
102 }
103
104 mt.mt_op = mtop_map[i].op;
105 mt.mt_count = lmtop.mt_count;
106 error = ioctlf(fp, MTIOCTOP, &mt);
107 break;
108 case LINUX_MTIOCGET:
109 memset(&lmtget, 0, sizeof(lmtget));
110 lmtget.mt_type = LINUX_MT_ISUNKNOWN;
111 lmtget.mt_resid = 0;
112 lmtget.mt_dsreg = 0;
113 lmtget.mt_gstat = 0;
114 lmtget.mt_erreg = 0;
115 lmtget.mt_fileno = 0;
116 lmtget.mt_blkno = 0;
117 error = copyout(&lmtget, SCARG(uap, data), sizeof lmtget);
118 break;
119 case LINUX_MTIOCPOS:
120 default:
121 printf("linux_mtio unsupported ioctl 0x%lx\n", com);
122 error = ENODEV;
123 break;
124 }
125
126 fd_putfile(SCARG(uap, fd));
127
128 return error;
129 }
130