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 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