freebsd_misc.c revision 1.29
1 /* $NetBSD: freebsd_misc.c,v 1.29 2007/03/04 06:01:15 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Frank van der Linden 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the NetBSD Project 18 * by Frank van der Linden 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * FreeBSD compatibility module. Try to deal with various FreeBSD system calls. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: freebsd_misc.c,v 1.29 2007/03/04 06:01:15 christos Exp $"); 40 41 #if defined(_KERNEL_OPT) 42 #include "opt_ntp.h" 43 #include "opt_ktrace.h" 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/proc.h> 49 #include <sys/mount.h> 50 #include <sys/signal.h> 51 #include <sys/signalvar.h> 52 #include <sys/malloc.h> 53 #include <sys/mman.h> 54 #ifdef KTRACE 55 #include <sys/ktrace.h> 56 #endif 57 58 #include <sys/syscallargs.h> 59 60 #include <compat/freebsd/freebsd_syscallargs.h> 61 #include <compat/common/compat_util.h> 62 #include <compat/freebsd/freebsd_rtprio.h> 63 #include <compat/freebsd/freebsd_timex.h> 64 #include <compat/freebsd/freebsd_signal.h> 65 #include <compat/freebsd/freebsd_mman.h> 66 67 int 68 freebsd_sys_msync(l, v, retval) 69 struct lwp *l; 70 void *v; 71 register_t *retval; 72 { 73 struct freebsd_sys_msync_args /* { 74 syscallarg(void *) addr; 75 syscallarg(size_t) len; 76 syscallarg(int) flags; 77 } */ *uap = v; 78 struct sys___msync13_args bma; 79 80 /* 81 * FreeBSD-2.0-RELEASE's msync(2) is compatible with NetBSD's. 82 * FreeBSD-2.0.5-RELEASE's msync(2) has addtional argument `flags', 83 * but syscall number is not changed. :-< 84 */ 85 SCARG(&bma, addr) = SCARG(uap, addr); 86 SCARG(&bma, len) = SCARG(uap, len); 87 SCARG(&bma, flags) = SCARG(uap, flags); 88 return sys___msync13(l, &bma, retval); 89 } 90 91 int 92 freebsd_sys_mmap(l, v, retval) 93 struct lwp *l; 94 void *v; 95 register_t *retval; 96 { 97 struct freebsd_sys_mmap_args /* { 98 syscallarg(void *) addr; 99 syscallarg(size_t) len; 100 syscallarg(int) prot; 101 syscallarg(int) flags; 102 syscallarg(int) fd; 103 syscallarg(long) pad; 104 syscallarg(off_t) pos; 105 } */ *uap = v; 106 struct sys_mmap_args bma; 107 int flags, prot, fd; 108 off_t pos; 109 110 prot = SCARG(uap, prot); 111 flags = SCARG(uap, flags); 112 fd = SCARG(uap, fd); 113 pos = SCARG(uap, pos); 114 115 /* 116 * If using MAP_STACK on FreeBSD: 117 * 118 * + fd has to be -1 119 * + prot must have read and write 120 * + MAP_STACK implies MAP_ANON 121 * + MAP_STACK implies offset of 0 122 */ 123 if (flags & FREEBSD_MAP_STACK) { 124 if ((fd != -1) 125 ||((prot & (PROT_READ|PROT_WRITE))!=(PROT_READ|PROT_WRITE))) 126 return (EINVAL); 127 128 flags |= (MAP_ANON | MAP_FIXED); 129 flags &= ~FREEBSD_MAP_STACK; 130 131 pos = 0; 132 } 133 134 SCARG(&bma, addr) = SCARG(uap, addr); 135 SCARG(&bma, len) = SCARG(uap, len); 136 SCARG(&bma, prot) = prot; 137 SCARG(&bma, flags) = flags; 138 SCARG(&bma, fd) = fd; 139 SCARG(&bma, pos) = pos; 140 141 return sys_mmap(l, &bma, retval); 142 } 143 144 /* just a place holder */ 145 146 int 147 freebsd_sys_rtprio(struct lwp *l, void *v, 148 register_t *retval) 149 { 150 #ifdef notyet 151 struct freebsd_sys_rtprio_args /* { 152 syscallarg(int) function; 153 syscallarg(pid_t) pid; 154 syscallarg(struct freebsd_rtprio *) rtp; 155 } */ *uap = v; 156 #endif 157 158 return ENOSYS; /* XXX */ 159 } 160 161 #ifdef NTP 162 int 163 freebsd_ntp_adjtime(struct lwp *l, void *v, 164 register_t *retval) 165 { 166 #ifdef notyet 167 struct freebsd_ntp_adjtime_args /* { 168 syscallarg(struct freebsd_timex *) tp; 169 } */ *uap = v; 170 #endif 171 172 return ENOSYS; /* XXX */ 173 } 174 #endif 175 176 int 177 freebsd_sys_sigaction4(struct lwp *l, void *v, register_t *retval) 178 { 179 struct freebsd_sys_sigaction4_args /* { 180 syscallarg(int) signum; 181 syscallarg(const struct freebsd_sigaction4 *) nsa; 182 syscallarg(struct freebsd_sigaction4 *) osa; 183 } */ *uap = v; 184 struct freebsd_sigaction4 nesa, oesa; 185 struct sigaction nbsa, obsa; 186 int error; 187 188 if (SCARG(uap, nsa)) { 189 error = copyin(SCARG(uap, nsa), &nesa, sizeof(nesa)); 190 if (error) 191 return (error); 192 nbsa.sa_handler = nesa.freebsd_sa_handler; 193 nbsa.sa_mask = nesa.freebsd_sa_mask; 194 nbsa.sa_flags = nesa.freebsd_sa_flags; 195 } 196 error = sigaction1(l, SCARG(uap, signum), 197 SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0, 198 NULL, 0); 199 if (error) 200 return (error); 201 if (SCARG(uap, osa)) { 202 oesa.freebsd_sa_handler = obsa.sa_handler; 203 oesa.freebsd_sa_mask = obsa.sa_mask; 204 oesa.freebsd_sa_flags = obsa.sa_flags; 205 error = copyout(&oesa, SCARG(uap, osa), sizeof(oesa)); 206 if (error) 207 return (error); 208 } 209 return (0); 210 } 211 212 int 213 freebsd_sys_utrace(struct lwp *l, void *v, register_t *retval) 214 { 215 #ifdef KTRACE 216 struct freebsd_sys_utrace_args /* { 217 syscallarg(void *) addr; 218 syscallarg(size_t) len; 219 } */ *uap = v; 220 struct proc *p = l->l_proc; 221 222 if (!KTRPOINT(p, KTR_USER)) 223 return 0; 224 225 return ktruser(l, "FreeBSD utrace", SCARG(uap, addr), SCARG(uap, len), 226 0); 227 #else 228 return ENOSYS; 229 #endif 230 } 231
Indexes created Sat Oct 18 08:10:09 GMT 2025