netbsd32_compat_30.c revision 1.31.16.5
1 /* $NetBSD: netbsd32_compat_30.c,v 1.31.16.5 2018/09/11 04:53:42 pgoyette Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_30.c,v 1.31.16.5 2018/09/11 04:53:42 pgoyette Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/module.h> 35 #include <sys/mount.h> 36 #include <sys/mount.h> 37 #include <sys/socket.h> 38 #include <sys/socketvar.h> 39 #include <sys/stat.h> 40 #include <sys/time.h> 41 #include <sys/ktrace.h> 42 #include <sys/resourcevar.h> 43 #include <sys/vnode.h> 44 #include <sys/file.h> 45 #include <sys/filedesc.h> 46 #include <sys/namei.h> 47 #include <sys/statvfs.h> 48 #include <sys/syscallargs.h> 49 #include <sys/syscallvar.h> 50 #include <sys/proc.h> 51 #include <sys/dirent.h> 52 #include <sys/kauth.h> 53 #include <sys/vfs_syscalls.h> 54 55 #include <compat/netbsd32/netbsd32.h> 56 #include <compat/netbsd32/netbsd32_syscall.h> 57 #include <compat/netbsd32/netbsd32_syscallargs.h> 58 #include <compat/netbsd32/netbsd32_conv.h> 59 #include <compat/sys/mount.h> 60 61 62 int 63 compat_30_netbsd32_getdents(struct lwp *l, const struct compat_30_netbsd32_getdents_args *uap, register_t *retval) 64 { 65 /* { 66 syscallarg(int) fd; 67 syscallarg(netbsd32_charp) buf; 68 syscallarg(netbsd32_size_t) count; 69 } */ 70 file_t *fp; 71 int error, done; 72 char *buf; 73 netbsd32_size_t count; 74 75 /* Limit the size on any kernel buffers used by VOP_READDIR */ 76 count = uimin(MAXBSIZE, SCARG(uap, count)); 77 78 /* fd_getvnode() will use the descriptor for us */ 79 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 80 return (error); 81 if ((fp->f_flag & FREAD) == 0) { 82 error = EBADF; 83 goto out; 84 } 85 if (count == 0) 86 goto out; 87 88 buf = kmem_alloc(count, KM_SLEEP); 89 error = vn_readdir(fp, buf, UIO_SYSSPACE, count, &done, l, 0, 0); 90 if (error == 0) { 91 *retval = netbsd32_to_dirent12(buf, done); 92 error = copyout(buf, SCARG_P32(uap, buf), *retval); 93 } 94 kmem_free(buf, count); 95 out: 96 fd_putfile(SCARG(uap, fd)); 97 return (error); 98 } 99 100 int 101 compat_30_netbsd32___stat13(struct lwp *l, const struct compat_30_netbsd32___stat13_args *uap, register_t *retval) 102 { 103 /* { 104 syscallarg(const netbsd32_charp) path; 105 syscallarg(netbsd32_stat13p_t) ub; 106 } */ 107 struct netbsd32_stat13 sb32; 108 struct stat sb; 109 int error; 110 const char *path; 111 112 path = SCARG_P32(uap, path); 113 114 error = do_sys_stat(path, FOLLOW, &sb); 115 if (error) 116 return (error); 117 netbsd32_from___stat13(&sb, &sb32); 118 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 119 return (error); 120 } 121 122 int 123 compat_30_netbsd32___fstat13(struct lwp *l, const struct compat_30_netbsd32___fstat13_args *uap, register_t *retval) 124 { 125 /* { 126 syscallarg(int) fd; 127 syscallarg(netbsd32_stat13p_t) sb; 128 } */ 129 struct netbsd32_stat13 sb32; 130 struct stat ub; 131 int error; 132 133 error = do_sys_fstat(SCARG(uap, fd), &ub); 134 if (error == 0) { 135 netbsd32_from___stat13(&ub, &sb32); 136 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); 137 } 138 return (error); 139 } 140 141 int 142 compat_30_netbsd32___lstat13(struct lwp *l, const struct compat_30_netbsd32___lstat13_args *uap, register_t *retval) 143 { 144 /* { 145 syscallarg(const netbsd32_charp) path; 146 syscallarg(netbsd32_stat13p_t) ub; 147 } */ 148 struct netbsd32_stat13 sb32; 149 struct stat sb; 150 int error; 151 const char *path; 152 153 path = SCARG_P32(uap, path); 154 155 error = do_sys_stat(path, NOFOLLOW, &sb); 156 if (error) 157 return (error); 158 netbsd32_from___stat13(&sb, &sb32); 159 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 160 return (error); 161 } 162 163 int 164 compat_30_netbsd32_fhstat(struct lwp *l, const struct compat_30_netbsd32_fhstat_args *uap, register_t *retval) 165 { 166 /* { 167 syscallarg(const netbsd32_fhandlep_t) fhp; 168 syscallarg(netbsd32_stat13p_t) sb; 169 } */ 170 struct stat sb; 171 struct netbsd32_stat13 sb32; 172 int error; 173 struct compat_30_fhandle fh; 174 struct mount *mp; 175 struct vnode *vp; 176 177 /* 178 * Must be super user 179 */ 180 if ((error = kauth_authorize_system(l->l_cred, 181 KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL))) 182 return (error); 183 184 if ((error = copyin(SCARG_P32(uap, fhp), &fh, sizeof(fh))) != 0) 185 return (error); 186 187 if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) 188 return (ESTALE); 189 if (mp->mnt_op->vfs_fhtovp == NULL) 190 return EOPNOTSUPP; 191 if ((error = VFS_FHTOVP(mp, (struct fid*)&fh.fh_fid, &vp))) 192 return (error); 193 error = vn_stat(vp, &sb); 194 vput(vp); 195 if (error) 196 return (error); 197 netbsd32_from___stat13(&sb, &sb32); 198 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb)); 199 return (error); 200 } 201 202 int 203 compat_30_netbsd32_fhstatvfs1(struct lwp *l, const struct compat_30_netbsd32_fhstatvfs1_args *uap, register_t *retval) 204 { 205 /* { 206 syscallarg(const netbsd32_fhandlep_t) fhp; 207 syscallarg(netbsd32_statvfsp_t) buf; 208 syscallarg(int) flags; 209 } */ 210 struct statvfs *sbuf; 211 struct netbsd32_statvfs *s32; 212 int error; 213 214 sbuf = STATVFSBUF_GET(); 215 error = do_fhstatvfs(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, sbuf, 216 SCARG(uap, flags)); 217 218 if (error != 0) { 219 s32 = kmem_alloc(sizeof(*s32), KM_SLEEP); 220 netbsd32_from_statvfs(sbuf, s32); 221 error = copyout(s32, SCARG_P32(uap, buf), sizeof *s32); 222 kmem_free(s32, sizeof(*s32)); 223 } 224 STATVFSBUF_PUT(sbuf); 225 226 return (error); 227 } 228 229 int 230 compat_30_netbsd32_socket(struct lwp *l, const struct compat_30_netbsd32_socket_args *uap, register_t *retval) 231 { 232 /* { 233 syscallarg(int) domain; 234 syscallarg(int) type; 235 syscallarg(int) protocol; 236 } */ 237 struct compat_30_sys_socket_args ua; 238 239 NETBSD32TO64_UAP(domain); 240 NETBSD32TO64_UAP(type); 241 NETBSD32TO64_UAP(protocol); 242 return (compat_30_sys_socket(l, &ua, retval)); 243 } 244 245 int 246 compat_30_netbsd32_getfh(struct lwp *l, const struct compat_30_netbsd32_getfh_args *uap, register_t *retval) 247 { 248 /* { 249 syscallarg(const netbsd32_charp) fname; 250 syscallarg(netbsd32_compat_30_fhandlep_t) fhp; 251 } */ 252 struct compat_30_sys_getfh_args ua; 253 254 NETBSD32TOP_UAP(fname, const char); 255 NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); 256 /* Lucky for us a fhandle_t doesn't change sizes */ 257 return (compat_30_sys_getfh(l, &ua, retval)); 258 } 259 260 261 int 262 compat_30_netbsd32___fhstat30(struct lwp *l, const struct compat_30_netbsd32___fhstat30_args *uap, register_t *retval) 263 { 264 /* { 265 syscallarg(const netbsd32_fhandlep_t) fhp; 266 syscallarg(netbsd32_statp_t) sb; 267 } */ 268 struct stat sb; 269 struct netbsd32_stat50 sb32; 270 int error; 271 272 error = do_fhstat(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, &sb); 273 if (error) 274 return error; 275 276 netbsd32_from___stat50(&sb, &sb32); 277 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); 278 return error; 279 } 280 281 /* 282 * Open a file given a file handle. 283 * 284 * Check permissions, allocate an open file structure, 285 * and call the device open routine if any. 286 */ 287 int 288 compat_30_netbsd32_fhopen(struct lwp *l, const struct compat_30_netbsd32_fhopen_args *uap, register_t *retval) 289 { 290 /* { 291 syscallarg(const fhandle_t *) fhp; 292 syscallarg(int) flags; 293 } */ 294 struct compat_30_sys_fhopen_args ua; 295 296 NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); 297 NETBSD32TO64_UAP(flags); 298 return (compat_30_sys_fhopen(l, &ua, retval)); 299 } 300 301 static struct syscall_package compat_netbsd32_30_syscalls[] = { 302 { NETBSD32_SYS_compat_30_netbsd32_getdents, 0, 303 (sy_call_t *)compat_30_netbsd32_getdents }, 304 { NETBSD32_SYS_compat_30_netbsd32___stat13, 0, 305 (sy_call_t *)compat_30_netbsd32___stat13 }, 306 { NETBSD32_SYS_compat_30_netbsd32___fstat13, 0, 307 (sy_call_t *)compat_30_netbsd32___fstat13 }, 308 { NETBSD32_SYS_compat_30_netbsd32___lstat13, 0, 309 (sy_call_t *)compat_30_netbsd32___lstat13 }, 310 { NETBSD32_SYS_compat_30_netbsd32_fhstat, 0, 311 (sy_call_t *)compat_30_netbsd32_fhstat }, 312 { NETBSD32_SYS_compat_30_netbsd32_fhstatvfs1, 0, 313 (sy_call_t *)compat_30_netbsd32_fhstatvfs1 }, 314 { NETBSD32_SYS_compat_30_netbsd32_socket, 0, 315 (sy_call_t *)compat_30_netbsd32_socket }, 316 { NETBSD32_SYS_compat_30_netbsd32_getfh, 0, 317 (sy_call_t *)compat_30_netbsd32_getfh }, 318 { NETBSD32_SYS_compat_30_netbsd32___fhstat30, 0, 319 (sy_call_t *)compat_30_netbsd32___fhstat30 }, 320 { NETBSD32_SYS_compat_30_netbsd32_fhopen, 0, 321 (sy_call_t *)compat_30_netbsd32_fhopen }, 322 { 0, 0, NULL } 323 }; 324 325 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_30, "compat_netbsd32,compat_30"); 326 327 static int 328 compat_netbsd32_30_modcmd(modcmd_t cmd, void *arg) 329 { 330 331 switch (cmd) { 332 case MODULE_CMD_INIT: 333 return syscall_establish(&emul_netbsd32, 334 compat_netbsd32_30_syscalls); 335 336 case MODULE_CMD_FINI: 337 return syscall_disestablish(&emul_netbsd32, 338 compat_netbsd32_30_syscalls); 339 340 default: 341 return ENOTTY; 342 } 343 } 344
Indexes created Thu Oct 02 14:10:14 GMT 2025