ultrix_pathname.c revision 1.1
1 /* $NetBSD: ultrix_pathname.c,v 1.1 1996/01/07 13:38:52 jonathan Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * 45 * @(#)sun_misc.c 8.1 (Berkeley) 6/18/93 46 * 47 * from: Header: sun_misc.c,v 1.16 93/04/07 02:46:27 torek Exp 48 */ 49 50 51 /* 52 * Ultrix emulation filesystem-namespace compatibility module. 53 * 54 * Ultrix system calls that examine the filesysten namespace 55 * are implemented here. Each system call has a wrapper that 56 * first checks if the given file exists at a special `emulation' 57 * pathname: the given path, prefixex with '/emul/ultrix', and 58 * if that pathname exists, it is used instead of the providd pathname. 59 * 60 * Used to locate OS-specific files (shared libraries, config files, 61 * etc) used by emul processes at their `normal' pathnames, without 62 * polluting, or conflicting with, the native filesysten namespace. 63 */ 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/namei.h> 68 #include <sys/file.h> 69 #include <sys/filedesc.h> 70 #include <sys/ioctl.h> 71 #include <sys/mount.h> 72 #include <sys/stat.h> 73 #include <sys/vnode.h> 74 #include <sys/syscallargs.h> 75 76 #include <compat/ultrix/ultrix_syscallargs.h> 77 #include <compat/ultrix/ultrix_util.h> 78 79 const char ultrix_emul_path[] = "/emul/ultrix"; 80 81 int 82 ultrix_sys_creat(p, v, retval) 83 struct proc *p; 84 void *v; 85 register_t *retval; 86 { 87 struct ultrix_sys_creat_args *uap = v; 88 struct sys_open_args ouap; 89 90 caddr_t sg = stackgap_init(p->p_emul); 91 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 92 93 SCARG(&ouap, path) = SCARG(uap, path); 94 SCARG(&ouap, flags) = O_WRONLY | O_CREAT | O_TRUNC; 95 SCARG(&ouap, mode) = SCARG(uap, mode); 96 97 return (sys_open(p, &ouap, retval)); 98 } 99 100 101 int 102 ultrix_sys_access(p, v, retval) 103 struct proc *p; 104 void *v; 105 register_t *retval; 106 { 107 struct ultrix_sys_access_args *uap = v; 108 caddr_t sg = stackgap_init(p->p_emul); 109 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 110 111 return (sys_access(p, uap, retval)); 112 } 113 114 int 115 ultrix_sys_stat(p, v, retval) 116 struct proc *p; 117 void *v; 118 register_t *retval; 119 { 120 struct ultrix_sys_stat_args *uap = v; 121 caddr_t sg = stackgap_init(p->p_emul); 122 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 123 124 return (compat_43_sys_stat(p, uap, retval)); 125 } 126 127 int 128 ultrix_sys_lstat(p, v, retval) 129 struct proc *p; 130 void *v; 131 register_t *retval; 132 { 133 struct ultrix_sys_lstat_args *uap = v; 134 caddr_t sg = stackgap_init(p->p_emul); 135 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 136 137 return (compat_43_sys_lstat(p, uap, retval)); 138 } 139 140 int 141 ultrix_sys_execv(p, v, retval) 142 struct proc *p; 143 void *v; 144 register_t *retval; 145 { 146 struct ultrix_sys_execv_args *uap = v; 147 struct sys_execve_args ouap; 148 149 caddr_t sg = stackgap_init(p->p_emul); 150 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 151 152 SCARG(&ouap, path) = SCARG(uap, path); 153 SCARG(&ouap, argp) = SCARG(uap, argp); 154 SCARG(&ouap, envp) = NULL; 155 156 return (sys_execve(p, &ouap, retval)); 157 } 158 159 int 160 ultrix_sys_open(p, v, retval) 161 struct proc *p; 162 void *v; 163 register_t *retval; 164 { 165 struct ultrix_sys_open_args *uap = v; 166 int l, r; 167 int noctty; 168 int ret; 169 170 caddr_t sg = stackgap_init(p->p_emul); 171 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 172 173 /* convert open flags into NetBSD flags */ 174 l = SCARG(uap, flags); 175 noctty = l & 0x8000; 176 r = (l & (0x0001 | 0x0002 | 0x0008 | 0x0040 | 0x0200 | 0x0400 | 0x0800)); 177 r |= ((l & (0x0004 | 0x1000 | 0x4000)) ? O_NONBLOCK : 0); 178 r |= ((l & 0x0080) ? O_SHLOCK : 0); 179 r |= ((l & 0x0100) ? O_EXLOCK : 0); 180 r |= ((l & 0x2000) ? O_FSYNC : 0); 181 182 SCARG(uap, flags) = r; 183 ret = sys_open(p, (struct sys_open_args *)uap, retval); 184 185 if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 186 struct filedesc *fdp = p->p_fd; 187 struct file *fp = fdp->fd_ofiles[*retval]; 188 189 /* ignore any error, just give it a try */ 190 if (fp->f_type == DTYPE_VNODE) 191 (fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, (caddr_t)0, p); 192 } 193 return ret; 194 } 195 196 197 struct ultrix_statfs { 198 long f_type; /* type of info, zero for now */ 199 long f_bsize; /* fundamental file system block size */ 200 long f_blocks; /* total blocks in file system */ 201 long f_bfree; /* free blocks */ 202 long f_bavail; /* free blocks available to non-super-user */ 203 long f_files; /* total file nodes in file system */ 204 long f_ffree; /* free file nodes in fs */ 205 fsid_t f_fsid; /* file system id */ 206 long f_spare[7]; /* spare for later */ 207 }; 208 209 /* 210 * Custruct ultrix statfs result from native. 211 * XXX should this be the same as returned by Ultrix getmnt(2)? 212 * XXX Ultrix predates DEV_BSIZE. Is conversion of disk space from 1k 213 * block units to DEV_BSIZE necessary? 214 */ 215 static int 216 ultrixstatfs(sp, buf) 217 struct statfs *sp; 218 caddr_t buf; 219 { 220 struct ultrix_statfs ssfs; 221 222 bzero(&ssfs, sizeof ssfs); 223 ssfs.f_type = 0; 224 ssfs.f_bsize = sp->f_bsize; 225 ssfs.f_blocks = sp->f_blocks; 226 ssfs.f_bfree = sp->f_bfree; 227 ssfs.f_bavail = sp->f_bavail; 228 ssfs.f_files = sp->f_files; 229 ssfs.f_ffree = sp->f_ffree; 230 ssfs.f_fsid = sp->f_fsid; 231 return copyout((caddr_t)&ssfs, buf, sizeof ssfs); 232 } 233 234 235 int 236 ultrix_sys_statfs(p, v, retval) 237 struct proc *p; 238 void *v; 239 register_t *retval; 240 { 241 struct ultrix_sys_statfs_args *uap = v; 242 register struct mount *mp; 243 register struct statfs *sp; 244 int error; 245 struct nameidata nd; 246 247 caddr_t sg = stackgap_init(p->p_emul); 248 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 249 250 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p); 251 if (error = namei(&nd)) 252 return (error); 253 mp = nd.ni_vp->v_mount; 254 sp = &mp->mnt_stat; 255 vrele(nd.ni_vp); 256 if (error = VFS_STATFS(mp, sp, p)) 257 return (error); 258 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 259 return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf)); 260 } 261 262 /* 263 * sys_fstatfs() takes an fd, not a path, and so needs no emul 264 * pathname processing; but it's similar enough to sys_statfs() that 265 * it goes here anyway. 266 */ 267 int 268 ultrix_sys_fstatfs(p, v, retval) 269 struct proc *p; 270 void *v; 271 register_t *retval; 272 { 273 struct ultrix_sys_fstatfs_args *uap = v; 274 struct file *fp; 275 struct mount *mp; 276 register struct statfs *sp; 277 int error; 278 279 if (error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) 280 return (error); 281 mp = ((struct vnode *)fp->f_data)->v_mount; 282 sp = &mp->mnt_stat; 283 if (error = VFS_STATFS(mp, sp, p)) 284 return (error); 285 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 286 return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf)); 287 } 288 289 int 290 ultrix_sys_mknod(p, v, retval) 291 struct proc *p; 292 void *v; 293 register_t *retval; 294 { 295 struct ultrix_sys_mknod_args *uap = v; 296 297 caddr_t sg = stackgap_init(p->p_emul); 298 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 299 300 if (S_ISFIFO(SCARG(uap, mode))) 301 return sys_mkfifo(p, uap, retval); 302 303 return sys_mknod(p, (struct sys_mknod_args *)uap, retval); 304 } 305
Indexes created Thu Sep 25 06:09:39 GMT 2025