netbsd32_compat_30.c revision 1.31.16.4
1 /* $NetBSD: netbsd32_compat_30.c,v 1.31.16.4 2018/09/11 02:53:56 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 1.31.16.4 2018/09/11 02:53:56 pgoyette Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/mount.h> 35 #include <sys/mount.h> 36 #include <sys/socket.h> 37 #include <sys/socketvar.h> 38 #include <sys/stat.h> 39 #include <sys/time.h> 40 #include <sys/ktrace.h> 41 #include <sys/resourcevar.h> 42 #include <sys/vnode.h> 43 #include <sys/file.h> 44 #include <sys/filedesc.h> 45 #include <sys/namei.h> 46 #include <sys/statvfs.h> 47 #include <sys/syscallargs.h> 48 #include <sys/syscallvar.h> 49 #include <sys/proc.h> 50 #include <sys/dirent.h> 51 #include <sys/kauth.h> 52 #include <sys/vfs_syscalls.h> 53 54 #include <compat/netbsd32/netbsd32.h> 55 #include <compat/netbsd32/netbsd32_syscall.h> 56 #include <compat/netbsd32/netbsd32_syscallargs.h> 57 #include <compat/netbsd32/netbsd32_conv.h> 58 #include <compat/sys/mount.h> 59 60 61 int 62 compat_30_netbsd32_getdents(struct lwp *l, const struct compat_30_netbsd32_getdents_args *uap, register_t *retval) 63 { 64 /* { 65 syscallarg(int) fd; 66 syscallarg(netbsd32_charp) buf; 67 syscallarg(netbsd32_size_t) count; 68 } */ 69 file_t *fp; 70 int error, done; 71 char *buf; 72 netbsd32_size_t count; 73 74 /* Limit the size on any kernel buffers used by VOP_READDIR */ 75 count = uimin(MAXBSIZE, SCARG(uap, count)); 76 77 /* fd_getvnode() will use the descriptor for us */ 78 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 79 return (error); 80 if ((fp->f_flag & FREAD) == 0) { 81 error = EBADF; 82 goto out; 83 } 84 if (count == 0) 85 goto out; 86 87 buf = kmem_alloc(count, KM_SLEEP); 88 error = vn_readdir(fp, buf, UIO_SYSSPACE, count, &done, l, 0, 0); 89 if (error == 0) { 90 *retval = netbsd32_to_dirent12(buf, done); 91 error = copyout(buf, SCARG_P32(uap, buf), *retval); 92 } 93 kmem_free(buf, count); 94 out: 95 fd_putfile(SCARG(uap, fd)); 96 return (error); 97 } 98 99 int 100 compat_30_netbsd32___stat13(struct lwp *l, const struct compat_30_netbsd32___stat13_args *uap, register_t *retval) 101 { 102 /* { 103 syscallarg(const netbsd32_charp) path; 104 syscallarg(netbsd32_stat13p_t) ub; 105 } */ 106 struct netbsd32_stat13 sb32; 107 struct stat sb; 108 int error; 109 const char *path; 110 111 path = SCARG_P32(uap, path); 112 113 error = do_sys_stat(path, FOLLOW, &sb); 114 if (error) 115 return (error); 116 netbsd32_from___stat13(&sb, &sb32); 117 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 118 return (error); 119 } 120 121 int 122 compat_30_netbsd32___fstat13(struct lwp *l, const struct compat_30_netbsd32___fstat13_args *uap, register_t *retval) 123 { 124 /* { 125 syscallarg(int) fd; 126 syscallarg(netbsd32_stat13p_t) sb; 127 } */ 128 struct netbsd32_stat13 sb32; 129 struct stat ub; 130 int error; 131 132 error = do_sys_fstat(SCARG(uap, fd), &ub); 133 if (error == 0) { 134 netbsd32_from___stat13(&ub, &sb32); 135 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); 136 } 137 return (error); 138 } 139 140 int 141 compat_30_netbsd32___lstat13(struct lwp *l, const struct compat_30_netbsd32___lstat13_args *uap, register_t *retval) 142 { 143 /* { 144 syscallarg(const netbsd32_charp) path; 145 syscallarg(netbsd32_stat13p_t) ub; 146 } */ 147 struct netbsd32_stat13 sb32; 148 struct stat sb; 149 int error; 150 const char *path; 151 152 path = SCARG_P32(uap, path); 153 154 error = do_sys_stat(path, NOFOLLOW, &sb); 155 if (error) 156 return (error); 157 netbsd32_from___stat13(&sb, &sb32); 158 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 159 return (error); 160 } 161 162 int 163 compat_30_netbsd32_fhstat(struct lwp *l, const struct compat_30_netbsd32_fhstat_args *uap, register_t *retval) 164 { 165 /* { 166 syscallarg(const netbsd32_fhandlep_t) fhp; 167 syscallarg(netbsd32_stat13p_t) sb; 168 } */ 169 struct stat sb; 170 struct netbsd32_stat13 sb32; 171 int error; 172 struct compat_30_fhandle fh; 173 struct mount *mp; 174 struct vnode *vp; 175 176 /* 177 * Must be super user 178 */ 179 if ((error = kauth_authorize_system(l->l_cred, 180 KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL))) 181 return (error); 182 183 if ((error = copyin(SCARG_P32(uap, fhp), &fh, sizeof(fh))) != 0) 184 return (error); 185 186 if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) 187 return (ESTALE); 188 if (mp->mnt_op->vfs_fhtovp == NULL) 189 return EOPNOTSUPP; 190 if ((error = VFS_FHTOVP(mp, (struct fid*)&fh.fh_fid, &vp))) 191 return (error); 192 error = vn_stat(vp, &sb); 193 vput(vp); 194 if (error) 195 return (error); 196 netbsd32_from___stat13(&sb, &sb32); 197 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb)); 198 return (error); 199 } 200 201 int 202 compat_30_netbsd32_fhstatvfs1(struct lwp *l, const struct compat_30_netbsd32_fhstatvfs1_args *uap, register_t *retval) 203 { 204 /* { 205 syscallarg(const netbsd32_fhandlep_t) fhp; 206 syscallarg(netbsd32_statvfsp_t) buf; 207 syscallarg(int) flags; 208 } */ 209 struct statvfs *sbuf; 210 struct netbsd32_statvfs *s32; 211 int error; 212 213 sbuf = STATVFSBUF_GET(); 214 error = do_fhstatvfs(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, sbuf, 215 SCARG(uap, flags)); 216 217 if (error != 0) { 218 s32 = kmem_alloc(sizeof(*s32), KM_SLEEP); 219 netbsd32_from_statvfs(sbuf, s32); 220 error = copyout(s32, SCARG_P32(uap, buf), sizeof *s32); 221 kmem_free(s32, sizeof(*s32)); 222 } 223 STATVFSBUF_PUT(sbuf); 224 225 return (error); 226 } 227 228 int 229 compat_30_netbsd32_socket(struct lwp *l, const struct compat_30_netbsd32_socket_args *uap, register_t *retval) 230 { 231 /* { 232 syscallarg(int) domain; 233 syscallarg(int) type; 234 syscallarg(int) protocol; 235 } */ 236 struct compat_30_sys_socket_args ua; 237 238 NETBSD32TO64_UAP(domain); 239 NETBSD32TO64_UAP(type); 240 NETBSD32TO64_UAP(protocol); 241 return (compat_30_sys_socket(l, &ua, retval)); 242 } 243 244 int 245 compat_30_netbsd32_getfh(struct lwp *l, const struct compat_30_netbsd32_getfh_args *uap, register_t *retval) 246 { 247 /* { 248 syscallarg(const netbsd32_charp) fname; 249 syscallarg(netbsd32_compat_30_fhandlep_t) fhp; 250 } */ 251 struct compat_30_sys_getfh_args ua; 252 253 NETBSD32TOP_UAP(fname, const char); 254 NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); 255 /* Lucky for us a fhandle_t doesn't change sizes */ 256 return (compat_30_sys_getfh(l, &ua, retval)); 257 } 258 259 260 int 261 compat_30_netbsd32___fhstat30(struct lwp *l, const struct compat_30_netbsd32___fhstat30_args *uap, register_t *retval) 262 { 263 /* { 264 syscallarg(const netbsd32_fhandlep_t) fhp; 265 syscallarg(netbsd32_statp_t) sb; 266 } */ 267 struct stat sb; 268 struct netbsd32_stat50 sb32; 269 int error; 270 271 error = do_fhstat(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, &sb); 272 if (error) 273 return error; 274 275 netbsd32_from___stat50(&sb, &sb32); 276 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); 277 return error; 278 } 279 280 /* 281 * Open a file given a file handle. 282 * 283 * Check permissions, allocate an open file structure, 284 * and call the device open routine if any. 285 */ 286 int 287 compat_30_netbsd32_fhopen(struct lwp *l, const struct compat_30_netbsd32_fhopen_args *uap, register_t *retval) 288 { 289 /* { 290 syscallarg(const fhandle_t *) fhp; 291 syscallarg(int) flags; 292 } */ 293 struct compat_30_sys_fhopen_args ua; 294 295 NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); 296 NETBSD32TO64_UAP(flags); 297 return (compat_30_sys_fhopen(l, &ua, retval)); 298 } 299 300 static struct syscall_package compat_netbsd32_30_syscalls[] = { 301 { NETBSD32_SYS_compat_30_netbsd32_getdents, 0, 302 (sy_call_t *)compat_30_netbsd32_getdents }, 303 { NETBSD32_SYS_compat_30_netbsd32___stat13, 0, 304 (sy_call_t *)compat_30_netbsd32___stat13 }, 305 { NETBSD32_SYS_compat_30_netbsd32___fstat13, 0, 306 (sy_call_t *)compat_30_netbsd32___fstat13 }, 307 { NETBSD32_SYS_compat_30_netbsd32___lstat13, 0, 308 (sy_call_t *)compat_30_netbsd32___lstat13 }, 309 { NETBSD32_SYS_compat_30_netbsd32_fhstat, 0, 310 (sy_call_t *)compat_30_netbsd32_fhstat }, 311 { NETBSD32_SYS_compat_30_netbsd32_fhstatvfs1, 0, 312 (sy_call_t *)compat_30_netbsd32_fhstatvfs1 }, 313 { NETBSD32_SYS_compat_30_netbsd32_socket, 0, 314 (sy_call_t *)compat_30_netbsd32_socket }, 315 { NETBSD32_SYS_compat_30_netbsd32_getfh, 0, 316 (sy_call_t *)compat_30_netbsd32_getfh }, 317 { NETBSD32_SYS_compat_30_netbsd32___fhstat30, 0, 318 (sy_call_t *)compat_30_netbsd32___fhstat30 }, 319 { NETBSD32_SYS_compat_30_netbsd32_fhopen, 0, 320 (sy_call_t *)compat_30_netbsd32___fhopen }, 321 { 0, 0, NULL } 322 }; 323 324 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_30, "compat_netbsd32,compat_30"); 325 326 static int 327 compat_netbsd32_30_modcmd(modcmd_t cmd, void *arg) 328 { 329 330 switch (cmd) { 331 case MODULE_CMD_INIT: 332 return syscall_establish(NULL, compat_netbsd32_30_syscalls); 333 334 case MODULE_CMD_FINI: 335 return syscall_disestablish(NULL, compat_netbsd32_30_syscalls); 336 337 default: 338 return ENOTTY; 339 } 340 } 341
Indexes created Thu Oct 02 14:10:14 GMT 2025