freebsd_misc.c revision 1.26
1 /* $NetBSD: freebsd_misc.c,v 1.26 2006/10/22 18:18:49 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 1.26 2006/10/22 18:18:49 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/sa.h> 59 #include <sys/syscallargs.h> 60 61 #include <compat/freebsd/freebsd_syscallargs.h> 62 #include <compat/common/compat_util.h> 63 #include <compat/freebsd/freebsd_rtprio.h> 64 #include <compat/freebsd/freebsd_timex.h> 65 #include <compat/freebsd/freebsd_signal.h> 66 #include <compat/freebsd/freebsd_mman.h> 67 68 int 69 freebsd_sys_msync(l, v, retval) 70 struct lwp *l; 71 void *v; 72 register_t *retval; 73 { 74 struct freebsd_sys_msync_args /* { 75 syscallarg(caddr_t) addr; 76 syscallarg(size_t) len; 77 syscallarg(int) flags; 78 } */ *uap = v; 79 struct sys___msync13_args bma; 80 81 /* 82 * FreeBSD-2.0-RELEASE's msync(2) is compatible with NetBSD's. 83 * FreeBSD-2.0.5-RELEASE's msync(2) has addtional argument `flags', 84 * but syscall number is not changed. :-< 85 */ 86 SCARG(&bma, addr) = SCARG(uap, addr); 87 SCARG(&bma, len) = SCARG(uap, len); 88 SCARG(&bma, flags) = SCARG(uap, flags); 89 return sys___msync13(l, &bma, retval); 90 } 91 92 int 93 freebsd_sys_mmap(l, v, retval) 94 struct lwp *l; 95 void *v; 96 register_t *retval; 97 { 98 struct freebsd_sys_mmap_args /* { 99 syscallarg(caddr_t) addr; 100 syscallarg(size_t) len; 101 syscallarg(int) prot; 102 syscallarg(int) flags; 103 syscallarg(int) fd; 104 syscallarg(long) pad; 105 syscallarg(off_t) pos; 106 } */ *uap = v; 107 struct sys_mmap_args bma; 108 int flags, prot, fd; 109 off_t pos; 110 111 prot = SCARG(uap, prot); 112 flags = SCARG(uap, flags); 113 fd = SCARG(uap, fd); 114 pos = SCARG(uap, pos); 115 116 /* 117 * If using MAP_STACK on FreeBSD: 118 * 119 * + fd has to be -1 120 * + prot must have read and write 121 * + MAP_STACK implies MAP_ANON 122 * + MAP_STACK implies offset of 0 123 */ 124 if (flags & FREEBSD_MAP_STACK) { 125 if ((fd != -1) 126 ||((prot & (PROT_READ|PROT_WRITE))!=(PROT_READ|PROT_WRITE))) 127 return (EINVAL); 128 129 flags |= (MAP_ANON | MAP_FIXED); 130 flags &= ~FREEBSD_MAP_STACK; 131 132 pos = 0; 133 } 134 135 SCARG(&bma, addr) = SCARG(uap, addr); 136 SCARG(&bma, len) = SCARG(uap, len); 137 SCARG(&bma, prot) = prot; 138 SCARG(&bma, flags) = flags; 139 SCARG(&bma, fd) = fd; 140 SCARG(&bma, pos) = pos; 141 142 return sys_mmap(l, &bma, retval); 143 } 144 145 /* just a place holder */ 146 147 int 148 freebsd_sys_rtprio(struct lwp *l __unused, void *v __unused, 149 register_t *retval __unused) 150 { 151 #ifdef notyet 152 struct freebsd_sys_rtprio_args /* { 153 syscallarg(int) function; 154 syscallarg(pid_t) pid; 155 syscallarg(struct freebsd_rtprio *) rtp; 156 } */ *uap = v; 157 #endif 158 159 return ENOSYS; /* XXX */ 160 } 161 162 #ifdef NTP 163 int 164 freebsd_ntp_adjtime(struct lwp *l __unused, void *v __unused, 165 register_t *retval __unused) 166 { 167 #ifdef notyet 168 struct freebsd_ntp_adjtime_args /* { 169 syscallarg(struct freebsd_timex *) tp; 170 } */ *uap = v; 171 #endif 172 173 return ENOSYS; /* XXX */ 174 } 175 #endif 176 177 int 178 freebsd_sys_sigaction4(struct lwp *l, void *v, register_t *retval __unused) 179 { 180 struct freebsd_sys_sigaction4_args /* { 181 syscallarg(int) signum; 182 syscallarg(const struct freebsd_sigaction4 *) nsa; 183 syscallarg(struct freebsd_sigaction4 *) osa; 184 } */ *uap = v; 185 struct proc *p = l->l_proc; 186 struct freebsd_sigaction4 nesa, oesa; 187 struct sigaction nbsa, obsa; 188 int error; 189 190 if (SCARG(uap, nsa)) { 191 error = copyin(SCARG(uap, nsa), &nesa, sizeof(nesa)); 192 if (error) 193 return (error); 194 nbsa.sa_handler = nesa.freebsd_sa_handler; 195 nbsa.sa_mask = nesa.freebsd_sa_mask; 196 nbsa.sa_flags = nesa.freebsd_sa_flags; 197 } 198 error = sigaction1(p, SCARG(uap, signum), 199 SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0, 200 NULL, 0); 201 if (error) 202 return (error); 203 if (SCARG(uap, osa)) { 204 oesa.freebsd_sa_handler = obsa.sa_handler; 205 oesa.freebsd_sa_mask = obsa.sa_mask; 206 oesa.freebsd_sa_flags = obsa.sa_flags; 207 error = copyout(&oesa, SCARG(uap, osa), sizeof(oesa)); 208 if (error) 209 return (error); 210 } 211 return (0); 212 } 213 214 int 215 freebsd_sys_utrace(struct lwp *l, void *v, register_t *retval __unused) 216 { 217 #ifdef KTRACE 218 struct freebsd_sys_utrace_args /* { 219 syscallarg(void *) addr; 220 syscallarg(size_t) len; 221 } */ *uap = v; 222 struct proc *p = l->l_proc; 223 224 if (!KTRPOINT(p, KTR_USER)) 225 return 0; 226 227 return ktruser(l, "FreeBSD utrace", SCARG(uap, addr), SCARG(uap, len), 228 0); 229 #else 230 return ENOSYS; 231 #endif 232 } 233
Indexes created Sat Oct 18 08:10:09 GMT 2025