1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1994 Christos Zoulas 5 * Copyright (c) 1995 Frank van der Linden 6 * Copyright (c) 1995 Scott Bartram 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp 32 * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp 33 * $FreeBSD$ 34 */ 35 36 #ifndef _LINUX_UTIL_H_ 37 #define _LINUX_UTIL_H_ 38 39 #include <sys/uio.h> 40 41 extern int linux_debug; 42 43 MALLOC_DECLARE(M_LINUX); 44 MALLOC_DECLARE(M_EPOLL); 45 46 int linux_pwd_onexec(struct thread *); 47 void linux_pwd_onexec_native(struct thread *); 48 49 #define DUMMY(s) \ 50 LIN_SDT_PROBE_DEFINE0(dummy, s, not_implemented); \ 51 int \ 52 linux_ ## s(struct thread *td, struct linux_ ## s ## _args *args) \ 53 { \ 54 static pid_t pid; \ 55 \ 56 if (pid != td->td_proc->p_pid) { \ 57 linux_msg(td, "syscall %s not implemented", #s); \ 58 LIN_SDT_PROBE0(dummy, s, not_implemented); \ 59 pid = td->td_proc->p_pid; \ 60 }; \ 61 \ 62 return (ENOSYS); \ 63 } \ 64 struct __hack 65 66 /* 67 * This is for the syscalls that are not even yet implemented in Linux. 68 * 69 * They're marked as UNIMPL in syscall.master so it will 70 * have nosys record in linux_sysent[]. 71 */ 72 #define UNIMPLEMENTED(s) 73 74 void linux_msg(const struct thread *td, const char *fmt, ...) 75 __printflike(2, 3); 76 77 struct linux_device_handler { 78 char *bsd_driver_name; 79 char *linux_driver_name; 80 char *bsd_device_name; 81 char *linux_device_name; 82 int linux_major; 83 int linux_minor; 84 int linux_char_device; 85 }; 86 87 struct stat; 88 89 int linux_device_register_handler(struct linux_device_handler *h); 90 int linux_device_unregister_handler(struct linux_device_handler *h); 91 char *linux_driver_get_name_dev(device_t dev); 92 int linux_driver_get_major_minor(const char *node, int *major, int *minor); 93 int linux_vn_get_major_minor(const struct vnode *vn, int *major, int *minor); 94 char *linux_get_char_devices(void); 95 void linux_free_get_char_devices(char *string); 96 void translate_vnhook_major_minor(struct vnode *vp, struct stat *sb); 97 98 #if defined(KTR) 99 100 #define KTR_LINUX KTR_SUBSYS 101 #define LINUX_CTRFMT(nm, fmt) #nm"("fmt")" 102 103 #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) do { \ 104 CTR6(KTR_LINUX, LINUX_CTRFMT(f, m), \ 105 p1, p2, p3, p4, p5, p6); \ 106 } while (0) 107 108 #define LINUX_CTR(f) LINUX_CTR6(f, "", 0, 0, 0, 0, 0, 0) 109 #define LINUX_CTR0(f, m) LINUX_CTR6(f, m, 0, 0, 0, 0, 0, 0) 110 #define LINUX_CTR1(f, m, p1) LINUX_CTR6(f, m, p1, 0, 0, 0, 0, 0) 111 #define LINUX_CTR2(f, m, p1, p2) LINUX_CTR6(f, m, p1, p2, 0, 0, 0, 0) 112 #define LINUX_CTR3(f, m, p1, p2, p3) LINUX_CTR6(f, m, p1, p2, p3, 0, 0, 0) 113 #define LINUX_CTR4(f, m, p1, p2, p3, p4) LINUX_CTR6(f, m, p1, p2, p3, p4, 0, 0) 114 #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5) LINUX_CTR6(f, m, p1, p2, p3, p4, p5, 0) 115 #else 116 #define LINUX_CTR(f) 117 #define LINUX_CTR0(f, m) 118 #define LINUX_CTR1(f, m, p1) 119 #define LINUX_CTR2(f, m, p1, p2) 120 #define LINUX_CTR3(f, m, p1, p2, p3) 121 #define LINUX_CTR4(f, m, p1, p2, p3, p4) 122 #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5) 123 #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) 124 #endif 125 126 /* 127 * Some macros for rate limiting messages: 128 * - noisy if compat.linux.debug = 1 129 * - print only once if compat.linux.debug > 1 130 */ 131 #define LINUX_RATELIMIT_MSG_NOTTESTED(_what) \ 132 do { \ 133 static int seen = 0; \ 134 \ 135 if (seen == 0 && linux_debug >= 2) { \ 136 linux_msg(curthread, "%s is not tested, please report on emulation@FreeBSD.org how it works", _what); \ 137 \ 138 if (linux_debug < 3) \ 139 seen = 1; \ 140 } \ 141 } while (0) 142 143 #define LINUX_RATELIMIT_MSG(_message) \ 144 do { \ 145 static int seen = 0; \ 146 \ 147 if (seen == 0) { \ 148 linux_msg(curthread, _message); \ 149 \ 150 if (linux_debug < 3) \ 151 seen = 1; \ 152 } \ 153 } while (0) 154 155 #define LINUX_RATELIMIT_MSG_OPT1(_message, _opt1) \ 156 do { \ 157 static int seen = 0; \ 158 \ 159 if (seen == 0) { \ 160 linux_msg(curthread, _message, _opt1); \ 161 \ 162 if (linux_debug < 3) \ 163 seen = 1; \ 164 } \ 165 } while (0) 166 167 #define LINUX_RATELIMIT_MSG_OPT2(_message, _opt1, _opt2) \ 168 do { \ 169 static int seen = 0; \ 170 \ 171 if (seen == 0) { \ 172 linux_msg(curthread, _message, _opt1, _opt2); \ 173 \ 174 if (linux_debug < 3) \ 175 seen = 1; \ 176 } \ 177 } while (0) 178 179 #endif /* ! _LINUX_UTIL_H_ */ 180