ultrix_pathname.c revision 1.4
1 /* $NetBSD: ultrix_pathname.c,v 1.4 1996/09/29 10:52:02 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 ap; 89 90 caddr_t sg = stackgap_init(p->p_emul); 91 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 92 93 SCARG(&ap, path) = SCARG(uap, path); 94 SCARG(&ap, flags) = O_WRONLY | O_CREAT | O_TRUNC; 95 SCARG(&ap, mode) = SCARG(uap, mode); 96 97 return (sys_open(p, &ap, 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 /* { 147 syscallarg(char *) path; 148 syscallarg(char **) argv; 149 } */ *uap = v; 150 struct sys_execve_args ap; 151 caddr_t sg; 152 153 sg = stackgap_init(p->p_emul); 154 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 155 156 SCARG(&ap, path) = SCARG(uap, path); 157 SCARG(&ap, argp) = SCARG(uap, argp); 158 SCARG(&ap, envp) = NULL; 159 160 return (sys_execve(p, &ap, retval)); 161 } 162 163 int 164 ultrix_sys_execve(p, v, retval) 165 struct proc *p; 166 void *v; 167 register_t *retval; 168 { 169 struct ultrix_sys_execve_args /* { 170 syscallarg(char *) path; 171 syscallarg(char **) argv; 172 syscallarg(char **) envp; 173 } */ *uap = v; 174 struct sys_execve_args ap; 175 caddr_t sg; 176 177 sg = stackgap_init(p->p_emul); 178 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 179 180 SCARG(&ap, path) = SCARG(uap, path); 181 SCARG(&ap, argp) = SCARG(uap, argp); 182 SCARG(&ap, envp) = SCARG(uap, envp); 183 184 return (sys_execve(p, &ap, retval)); 185 } 186 187 int 188 ultrix_sys_open(p, v, retval) 189 struct proc *p; 190 void *v; 191 register_t *retval; 192 { 193 struct ultrix_sys_open_args *uap = v; 194 int l, r; 195 int noctty; 196 int ret; 197 198 caddr_t sg = stackgap_init(p->p_emul); 199 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 200 201 /* convert open flags into NetBSD flags */ 202 l = SCARG(uap, flags); 203 noctty = l & 0x8000; 204 r = (l & (0x0001 | 0x0002 | 0x0008 | 0x0040 | 0x0200 | 0x0400 | 0x0800)); 205 r |= ((l & (0x0004 | 0x1000 | 0x4000)) ? O_NONBLOCK : 0); 206 r |= ((l & 0x0080) ? O_SHLOCK : 0); 207 r |= ((l & 0x0100) ? O_EXLOCK : 0); 208 r |= ((l & 0x2000) ? O_FSYNC : 0); 209 210 SCARG(uap, flags) = r; 211 ret = sys_open(p, (struct sys_open_args *)uap, retval); 212 213 if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 214 struct filedesc *fdp = p->p_fd; 215 struct file *fp = fdp->fd_ofiles[*retval]; 216 217 /* ignore any error, just give it a try */ 218 if (fp->f_type == DTYPE_VNODE) 219 (fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, (caddr_t)0, p); 220 } 221 return ret; 222 } 223 224 225 struct ultrix_statfs { 226 long f_type; /* type of info, zero for now */ 227 long f_bsize; /* fundamental file system block size */ 228 long f_blocks; /* total blocks in file system */ 229 long f_bfree; /* free blocks */ 230 long f_bavail; /* free blocks available to non-super-user */ 231 long f_files; /* total file nodes in file system */ 232 long f_ffree; /* free file nodes in fs */ 233 fsid_t f_fsid; /* file system id */ 234 long f_spare[7]; /* spare for later */ 235 }; 236 237 /* 238 * Custruct ultrix statfs result from native. 239 * XXX should this be the same as returned by Ultrix getmnt(2)? 240 * XXX Ultrix predates DEV_BSIZE. Is conversion of disk space from 1k 241 * block units to DEV_BSIZE necessary? 242 */ 243 static int 244 ultrixstatfs(sp, buf) 245 struct statfs *sp; 246 caddr_t buf; 247 { 248 struct ultrix_statfs ssfs; 249 250 bzero(&ssfs, sizeof ssfs); 251 ssfs.f_type = 0; 252 ssfs.f_bsize = sp->f_bsize; 253 ssfs.f_blocks = sp->f_blocks; 254 ssfs.f_bfree = sp->f_bfree; 255 ssfs.f_bavail = sp->f_bavail; 256 ssfs.f_files = sp->f_files; 257 ssfs.f_ffree = sp->f_ffree; 258 ssfs.f_fsid = sp->f_fsid; 259 return copyout((caddr_t)&ssfs, buf, sizeof ssfs); 260 } 261 262 263 int 264 ultrix_sys_statfs(p, v, retval) 265 struct proc *p; 266 void *v; 267 register_t *retval; 268 { 269 struct ultrix_sys_statfs_args *uap = v; 270 register struct mount *mp; 271 register struct statfs *sp; 272 int error; 273 struct nameidata nd; 274 275 caddr_t sg = stackgap_init(p->p_emul); 276 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 277 278 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p); 279 if ((error = namei(&nd)) != 0) 280 return (error); 281 282 mp = nd.ni_vp->v_mount; 283 sp = &mp->mnt_stat; 284 vrele(nd.ni_vp); 285 if ((error = VFS_STATFS(mp, sp, p)) != 0) 286 return (error); 287 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 288 return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf)); 289 } 290 291 /* 292 * sys_fstatfs() takes an fd, not a path, and so needs no emul 293 * pathname processing; but it's similar enough to sys_statfs() that 294 * it goes here anyway. 295 */ 296 int 297 ultrix_sys_fstatfs(p, v, retval) 298 struct proc *p; 299 void *v; 300 register_t *retval; 301 { 302 struct ultrix_sys_fstatfs_args *uap = v; 303 struct file *fp; 304 struct mount *mp; 305 register struct statfs *sp; 306 int error; 307 308 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 309 return (error); 310 mp = ((struct vnode *)fp->f_data)->v_mount; 311 sp = &mp->mnt_stat; 312 if ((error = VFS_STATFS(mp, sp, p)) != 0) 313 return (error); 314 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 315 return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf)); 316 } 317 318 int 319 ultrix_sys_mknod(p, v, retval) 320 struct proc *p; 321 void *v; 322 register_t *retval; 323 { 324 struct ultrix_sys_mknod_args *uap = v; 325 326 caddr_t sg = stackgap_init(p->p_emul); 327 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 328 329 if (S_ISFIFO(SCARG(uap, mode))) 330 return sys_mkfifo(p, uap, retval); 331 332 return sys_mknod(p, (struct sys_mknod_args *)uap, retval); 333 } 334
Indexes created Thu Sep 25 14:09:45 GMT 2025