ultrix_pathname.c revision 1.5
1 /* $NetBSD: ultrix_pathname.c,v 1.5 1996/10/14 05:15:39 mhitch 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 #include <sys/proc.h> 76 77 #include <compat/ultrix/ultrix_syscallargs.h> 78 #include <compat/ultrix/ultrix_util.h> 79 80 const char ultrix_emul_path[] = "/emul/ultrix"; 81 82 int 83 ultrix_sys_creat(p, v, retval) 84 struct proc *p; 85 void *v; 86 register_t *retval; 87 { 88 struct ultrix_sys_creat_args *uap = v; 89 struct sys_open_args ap; 90 91 caddr_t sg = stackgap_init(p->p_emul); 92 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 93 94 SCARG(&ap, path) = SCARG(uap, path); 95 SCARG(&ap, flags) = O_WRONLY | O_CREAT | O_TRUNC; 96 SCARG(&ap, mode) = SCARG(uap, mode); 97 98 return (sys_open(p, &ap, retval)); 99 } 100 101 102 int 103 ultrix_sys_access(p, v, retval) 104 struct proc *p; 105 void *v; 106 register_t *retval; 107 { 108 struct ultrix_sys_access_args *uap = v; 109 caddr_t sg = stackgap_init(p->p_emul); 110 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 111 112 return (sys_access(p, uap, retval)); 113 } 114 115 int 116 ultrix_sys_stat(p, v, retval) 117 struct proc *p; 118 void *v; 119 register_t *retval; 120 { 121 struct ultrix_sys_stat_args *uap = v; 122 caddr_t sg = stackgap_init(p->p_emul); 123 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 124 125 return (compat_43_sys_stat(p, uap, retval)); 126 } 127 128 int 129 ultrix_sys_lstat(p, v, retval) 130 struct proc *p; 131 void *v; 132 register_t *retval; 133 { 134 struct ultrix_sys_lstat_args *uap = v; 135 caddr_t sg = stackgap_init(p->p_emul); 136 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 137 138 return (compat_43_sys_lstat(p, uap, retval)); 139 } 140 141 int 142 ultrix_sys_execv(p, v, retval) 143 struct proc *p; 144 void *v; 145 register_t *retval; 146 { 147 struct ultrix_sys_execv_args /* { 148 syscallarg(char *) path; 149 syscallarg(char **) argv; 150 } */ *uap = v; 151 struct sys_execve_args ap; 152 caddr_t sg; 153 154 sg = stackgap_init(p->p_emul); 155 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 156 157 SCARG(&ap, path) = SCARG(uap, path); 158 SCARG(&ap, argp) = SCARG(uap, argp); 159 SCARG(&ap, envp) = NULL; 160 161 return (sys_execve(p, &ap, retval)); 162 } 163 164 int 165 ultrix_sys_execve(p, v, retval) 166 struct proc *p; 167 void *v; 168 register_t *retval; 169 { 170 struct ultrix_sys_execve_args /* { 171 syscallarg(char *) path; 172 syscallarg(char **) argv; 173 syscallarg(char **) envp; 174 } */ *uap = v; 175 struct sys_execve_args ap; 176 caddr_t sg; 177 178 sg = stackgap_init(p->p_emul); 179 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 180 181 SCARG(&ap, path) = SCARG(uap, path); 182 SCARG(&ap, argp) = SCARG(uap, argp); 183 SCARG(&ap, envp) = SCARG(uap, envp); 184 185 return (sys_execve(p, &ap, retval)); 186 } 187 188 int 189 ultrix_sys_open(p, v, retval) 190 struct proc *p; 191 void *v; 192 register_t *retval; 193 { 194 struct ultrix_sys_open_args *uap = v; 195 int l, r; 196 int noctty; 197 int ret; 198 199 caddr_t sg = stackgap_init(p->p_emul); 200 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 201 202 /* convert open flags into NetBSD flags */ 203 l = SCARG(uap, flags); 204 noctty = l & 0x8000; 205 r = (l & (0x0001 | 0x0002 | 0x0008 | 0x0040 | 0x0200 | 0x0400 | 0x0800)); 206 r |= ((l & (0x0004 | 0x1000 | 0x4000)) ? O_NONBLOCK : 0); 207 r |= ((l & 0x0080) ? O_SHLOCK : 0); 208 r |= ((l & 0x0100) ? O_EXLOCK : 0); 209 r |= ((l & 0x2000) ? O_FSYNC : 0); 210 211 SCARG(uap, flags) = r; 212 ret = sys_open(p, (struct sys_open_args *)uap, retval); 213 214 if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 215 struct filedesc *fdp = p->p_fd; 216 struct file *fp = fdp->fd_ofiles[*retval]; 217 218 /* ignore any error, just give it a try */ 219 if (fp->f_type == DTYPE_VNODE) 220 (fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, (caddr_t)0, p); 221 } 222 return ret; 223 } 224 225 226 struct ultrix_statfs { 227 long f_type; /* type of info, zero for now */ 228 long f_bsize; /* fundamental file system block size */ 229 long f_blocks; /* total blocks in file system */ 230 long f_bfree; /* free blocks */ 231 long f_bavail; /* free blocks available to non-super-user */ 232 long f_files; /* total file nodes in file system */ 233 long f_ffree; /* free file nodes in fs */ 234 fsid_t f_fsid; /* file system id */ 235 long f_spare[7]; /* spare for later */ 236 }; 237 238 /* 239 * Custruct ultrix statfs result from native. 240 * XXX should this be the same as returned by Ultrix getmnt(2)? 241 * XXX Ultrix predates DEV_BSIZE. Is conversion of disk space from 1k 242 * block units to DEV_BSIZE necessary? 243 */ 244 static int 245 ultrixstatfs(sp, buf) 246 struct statfs *sp; 247 caddr_t buf; 248 { 249 struct ultrix_statfs ssfs; 250 251 bzero(&ssfs, sizeof ssfs); 252 ssfs.f_type = 0; 253 ssfs.f_bsize = sp->f_bsize; 254 ssfs.f_blocks = sp->f_blocks; 255 ssfs.f_bfree = sp->f_bfree; 256 ssfs.f_bavail = sp->f_bavail; 257 ssfs.f_files = sp->f_files; 258 ssfs.f_ffree = sp->f_ffree; 259 ssfs.f_fsid = sp->f_fsid; 260 return copyout((caddr_t)&ssfs, buf, sizeof ssfs); 261 } 262 263 264 int 265 ultrix_sys_statfs(p, v, retval) 266 struct proc *p; 267 void *v; 268 register_t *retval; 269 { 270 struct ultrix_sys_statfs_args *uap = v; 271 register struct mount *mp; 272 register struct statfs *sp; 273 int error; 274 struct nameidata nd; 275 276 caddr_t sg = stackgap_init(p->p_emul); 277 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 278 279 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p); 280 if ((error = namei(&nd)) != 0) 281 return (error); 282 283 mp = nd.ni_vp->v_mount; 284 sp = &mp->mnt_stat; 285 vrele(nd.ni_vp); 286 if ((error = VFS_STATFS(mp, sp, p)) != 0) 287 return (error); 288 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 289 return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf)); 290 } 291 292 /* 293 * sys_fstatfs() takes an fd, not a path, and so needs no emul 294 * pathname processing; but it's similar enough to sys_statfs() that 295 * it goes here anyway. 296 */ 297 int 298 ultrix_sys_fstatfs(p, v, retval) 299 struct proc *p; 300 void *v; 301 register_t *retval; 302 { 303 struct ultrix_sys_fstatfs_args *uap = v; 304 struct file *fp; 305 struct mount *mp; 306 register struct statfs *sp; 307 int error; 308 309 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 310 return (error); 311 mp = ((struct vnode *)fp->f_data)->v_mount; 312 sp = &mp->mnt_stat; 313 if ((error = VFS_STATFS(mp, sp, p)) != 0) 314 return (error); 315 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 316 return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf)); 317 } 318 319 int 320 ultrix_sys_mknod(p, v, retval) 321 struct proc *p; 322 void *v; 323 register_t *retval; 324 { 325 struct ultrix_sys_mknod_args *uap = v; 326 327 caddr_t sg = stackgap_init(p->p_emul); 328 ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 329 330 if (S_ISFIFO(SCARG(uap, mode))) 331 return sys_mkfifo(p, uap, retval); 332 333 return sys_mknod(p, (struct sys_mknod_args *)uap, retval); 334 } 335
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